summaryrefslogtreecommitdiff
path: root/posix
diff options
context:
space:
mode:
Diffstat (limited to 'posix')
-rw-r--r--posix/Makefile3
-rw-r--r--posix/PCRE.tests13
-rw-r--r--posix/bug-regex28.c46
-rw-r--r--posix/bug-regex37.c32
-rw-r--r--posix/bug-regex38.c32
-rw-r--r--posix/regcomp.c597
-rw-r--r--posix/regex.c21
-rw-r--r--posix/regex.h335
-rw-r--r--posix/regex_internal.c295
-rw-r--r--posix/regex_internal.h442
-rw-r--r--posix/regexec.c936
11 files changed, 1591 insertions, 1161 deletions
diff --git a/posix/Makefile b/posix/Makefile
index 989e42e1f8..00c62841a2 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -95,7 +95,8 @@ tests := test-errno tstgetopt testfnm runtests runptests \
tst-posix_spawn-fd tst-posix_spawn-setsid \
tst-posix_fadvise tst-posix_fadvise64 \
tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \
- tst-glob-tilde test-ssize-max tst-spawn4
+ tst-glob-tilde test-ssize-max tst-spawn4 bug-regex37 \
+ bug-regex38
tests-internal := bug-regex5 bug-regex20 bug-regex33 \
tst-rfc3484 tst-rfc3484-2 tst-rfc3484-3 \
tst-glob_lstat_compat tst-spawn4-compat
diff --git a/posix/PCRE.tests b/posix/PCRE.tests
index 0fb9cadafc..da63b86637 100644
--- a/posix/PCRE.tests
+++ b/posix/PCRE.tests
@@ -1774,19 +1774,6 @@ No match
0: abcabc
1: abc
-/(a)|\1/
- a
- 0: a
- 1: a
- *** Failers
- 0: a
- 1: a
- ab
- 0: a
- 1: a
- x
-No match
-
/abc/i
ABC
0: ABC
diff --git a/posix/bug-regex28.c b/posix/bug-regex28.c
index 5353edf373..ba263b27c8 100644
--- a/posix/bug-regex28.c
+++ b/posix/bug-regex28.c
@@ -21,18 +21,22 @@
#include <stdio.h>
#include <string.h>
+#include <support/test-driver.h>
+#include <support/check.h>
+
struct tests
{
const char *regex;
const char *string;
reg_syntax_t syntax;
int retval;
-} tests[] = {
+};
+static const struct tests tests[] = {
#define EGREP RE_SYNTAX_EGREP
#define EGREP_NL (RE_SYNTAX_EGREP | RE_DOT_NEWLINE) & ~RE_HAT_LISTS_NOT_NEWLINE
- { "a.b", "a\nb", EGREP, -1 },
+ { "a.b", "a\nb", EGREP, 0 },
{ "a.b", "a\nb", EGREP_NL, 0 },
- { "a[^x]b", "a\nb", EGREP, -1 },
+ { "a[^x]b", "a\nb", EGREP, 0 },
{ "a[^x]b", "a\nb", EGREP_NL, 0 },
/* While \S and \W are internally handled as [^[:space:]] and [^[:alnum:]_],
RE_HAT_LISTS_NOT_NEWLINE did not make any difference, so ensure
@@ -42,33 +46,33 @@ struct tests
{ "a\\Wb", "a\nb", EGREP, 0 },
{ "a\\Wb", "a\nb", EGREP_NL, 0 }
};
+static const size_t tests_size = sizeof (tests) / sizeof (tests[0]);
-int
-main (void)
+static int
+do_test (void)
{
struct re_pattern_buffer r;
- size_t i;
- int ret = 0;
- for (i = 0; i < sizeof (tests) / sizeof (tests[i]); ++i)
+ for (size_t i = 0; i < tests_size; i++)
{
re_set_syntax (tests[i].syntax);
memset (&r, 0, sizeof (r));
- if (re_compile_pattern (tests[i].regex, strlen (tests[i].regex), &r))
- {
- printf ("re_compile_pattern %zd failed\n", i);
- ret = 1;
- continue;
- }
+ const char *re = re_compile_pattern (tests[i].regex,
+ strlen (tests[i].regex), &r);
+ TEST_VERIFY (re == NULL);
+ if (re != NULL)
+ continue;
+
size_t len = strlen (tests[i].string);
int rv = re_search (&r, tests[i].string, len, 0, len, NULL);
- if (rv != tests[i].retval)
- {
- printf ("re_search %zd unexpected value %d != %d\n",
- i, rv, tests[i].retval);
- ret = 1;
- }
+ TEST_VERIFY (rv == tests[i].retval);
+ if (test_verbose > 0)
+ printf ("info: i=%zu rv=%d expected=%d\n", i, rv, tests[i].retval);
+
regfree (&r);
}
- return ret;
+
+ return 0;
}
+
+#include <support/test-driver.c>
diff --git a/posix/bug-regex37.c b/posix/bug-regex37.c
new file mode 100644
index 0000000000..87a0916914
--- /dev/null
+++ b/posix/bug-regex37.c
@@ -0,0 +1,32 @@
+/* Test regcomp return for invalid expression (BZ #21163).
+ Copyright (C) 2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <regex.h>
+
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ char const pattern[] = "()*)|\\1)*";
+ regex_t r;
+ TEST_VERIFY_EXIT (regcomp (&r, pattern, REG_EXTENDED) == REG_ESUBREG);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/posix/bug-regex38.c b/posix/bug-regex38.c
new file mode 100644
index 0000000000..cb0eb7d214
--- /dev/null
+++ b/posix/bug-regex38.c
@@ -0,0 +1,32 @@
+/* Diagnose invalid back-reference in the ERE '()|\1' (BZ #18986).
+ Copyright (C) 2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <regex.h>
+
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ char const pattern[] = "0|()0|\\1|0";
+ regex_t r;
+ TEST_VERIFY_EXIT (regcomp (&r, pattern, REG_EXTENDED) == REG_ESUBREG);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/posix/regcomp.c b/posix/regcomp.c
index f5c09febb9..7b5ddaad0c 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -15,9 +15,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <stdint.h>
+ <https://www.gnu.org/licenses/>. */
#ifdef _LIBC
# include <locale/weight.h>
@@ -51,14 +49,14 @@ static bin_tree_t *lower_subexp (reg_errcode_t *err, regex_t *preg,
static reg_errcode_t calc_first (void *extra, bin_tree_t *node);
static reg_errcode_t calc_next (void *extra, bin_tree_t *node);
static reg_errcode_t link_nfa_nodes (void *extra, bin_tree_t *node);
-static int duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint);
-static int search_duplicated_node (const re_dfa_t *dfa, int org_node,
+static Idx duplicate_node (re_dfa_t *dfa, Idx org_idx, unsigned int constraint);
+static Idx search_duplicated_node (const re_dfa_t *dfa, Idx org_node,
unsigned int constraint);
static reg_errcode_t calc_eclosure (re_dfa_t *dfa);
static reg_errcode_t calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa,
- int node, int root);
+ Idx node, bool root);
static reg_errcode_t calc_inveclosure (re_dfa_t *dfa);
-static int fetch_number (re_string_t *input, re_token_t *token,
+static Idx fetch_number (re_string_t *input, re_token_t *token,
reg_syntax_t syntax);
static int peek_token (re_token_t *token, re_string_t *input,
reg_syntax_t syntax);
@@ -66,16 +64,16 @@ static bin_tree_t *parse (re_string_t *regexp, regex_t *preg,
reg_syntax_t syntax, reg_errcode_t *err);
static bin_tree_t *parse_reg_exp (re_string_t *regexp, regex_t *preg,
re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
+ Idx nest, reg_errcode_t *err);
static bin_tree_t *parse_branch (re_string_t *regexp, regex_t *preg,
re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
+ Idx nest, reg_errcode_t *err);
static bin_tree_t *parse_expression (re_string_t *regexp, regex_t *preg,
re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
+ Idx nest, reg_errcode_t *err);
static bin_tree_t *parse_sub_exp (re_string_t *regexp, regex_t *preg,
re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
+ Idx nest, reg_errcode_t *err);
static bin_tree_t *parse_dup_op (bin_tree_t *dup_elem, re_string_t *regexp,
re_dfa_t *dfa, re_token_t *token,
reg_syntax_t syntax, reg_errcode_t *err);
@@ -87,34 +85,34 @@ static reg_errcode_t parse_bracket_element (bracket_elem_t *elem,
re_token_t *token, int token_len,
re_dfa_t *dfa,
reg_syntax_t syntax,
- int accept_hyphen);
+ bool accept_hyphen);
static reg_errcode_t parse_bracket_symbol (bracket_elem_t *elem,
re_string_t *regexp,
re_token_t *token);
#ifdef RE_ENABLE_I18N
static reg_errcode_t build_equiv_class (bitset_t sbcset,
re_charset_t *mbcset,
- int *equiv_class_alloc,
+ Idx *equiv_class_alloc,
const unsigned char *name);
static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
bitset_t sbcset,
re_charset_t *mbcset,
- int *char_class_alloc,
- const unsigned char *class_name,
+ Idx *char_class_alloc,
+ const char *class_name,
reg_syntax_t syntax);
#else /* not RE_ENABLE_I18N */
static reg_errcode_t build_equiv_class (bitset_t sbcset,
const unsigned char *name);
static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
bitset_t sbcset,
- const unsigned char *class_name,
+ const char *class_name,
reg_syntax_t syntax);
#endif /* not RE_ENABLE_I18N */
static bin_tree_t *build_charclass_op (re_dfa_t *dfa,
RE_TRANSLATE_TYPE trans,
- const unsigned char *class_name,
- const unsigned char *extra,
- int non_match, reg_errcode_t *err);
+ const char *class_name,
+ const char *extra,
+ bool non_match, reg_errcode_t *err);
static bin_tree_t *create_tree (re_dfa_t *dfa,
bin_tree_t *left, bin_tree_t *right,
re_token_type_t type);
@@ -131,7 +129,7 @@ static reg_errcode_t mark_opt_subexp (void *extra, bin_tree_t *node);
POSIX doesn't require that we do anything for REG_NOERROR,
but why not be nice? */
-const char __re_error_msgid[] attribute_hidden =
+static const char __re_error_msgid[] =
{
#define REG_NOERROR_IDX 0
gettext_noop ("Success") /* REG_NOERROR */
@@ -155,9 +153,9 @@ const char __re_error_msgid[] attribute_hidden =
gettext_noop ("Invalid back reference") /* REG_ESUBREG */
"\0"
#define REG_EBRACK_IDX (REG_ESUBREG_IDX + sizeof "Invalid back reference")
- gettext_noop ("Unmatched [ or [^") /* REG_EBRACK */
+ gettext_noop ("Unmatched [, [^, [:, [., or [=") /* REG_EBRACK */
"\0"
-#define REG_EPAREN_IDX (REG_EBRACK_IDX + sizeof "Unmatched [ or [^")
+#define REG_EPAREN_IDX (REG_EBRACK_IDX + sizeof "Unmatched [, [^, [:, [., or [=")
gettext_noop ("Unmatched ( or \\(") /* REG_EPAREN */
"\0"
#define REG_EBRACE_IDX (REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
@@ -185,7 +183,7 @@ const char __re_error_msgid[] attribute_hidden =
gettext_noop ("Unmatched ) or \\)") /* REG_ERPAREN */
};
-const size_t __re_error_msgid_idx[] attribute_hidden =
+static const size_t __re_error_msgid_idx[] =
{
REG_NOERROR_IDX,
REG_NOMATCH_IDX,
@@ -269,7 +267,7 @@ weak_alias (__re_set_syntax, re_set_syntax)
int
re_compile_fastmap (struct re_pattern_buffer *bufp)
{
- re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
+ re_dfa_t *dfa = bufp->buffer;
char *fastmap = bufp->fastmap;
memset (fastmap, '\0', sizeof (char) * SBC_MAX);
@@ -303,12 +301,12 @@ static void
re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
char *fastmap)
{
- re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
- int node_cnt;
- int icase = (dfa->mb_cur_max == 1 && (bufp->syntax & RE_ICASE));
+ re_dfa_t *dfa = bufp->buffer;
+ Idx node_cnt;
+ bool icase = (dfa->mb_cur_max == 1 && (bufp->syntax & RE_ICASE));
for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt)
{
- int node = init_state->nodes.elems[node_cnt];
+ Idx node = init_state->nodes.elems[node_cnt];
re_token_type_t type = dfa->nodes[node].type;
if (type == CHARACTER)
@@ -317,7 +315,8 @@ re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
#ifdef RE_ENABLE_I18N
if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
{
- unsigned char *buf = alloca (dfa->mb_cur_max), *p;
+ unsigned char buf[MB_LEN_MAX];
+ unsigned char *p;
wchar_t wc;
mbstate_t state;
@@ -332,7 +331,7 @@ re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
&state) == p - buf
&& (__wcrtomb ((char *) buf, __towlower (wc), &state)
!= (size_t) -1))
- re_set_fastmap (fastmap, 0, buf[0]);
+ re_set_fastmap (fastmap, false, buf[0]);
}
#endif
}
@@ -352,7 +351,7 @@ re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
else if (type == COMPLEX_BRACKET)
{
re_charset_t *cset = dfa->nodes[node].opr.mbcset;
- int i;
+ Idx i;
# ifdef _LIBC
/* See if we have to try all bytes which start multiple collation
@@ -465,7 +464,7 @@ re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
the return codes and their meanings.) */
int
-regcomp (regex_t *__restrict preg, const char *__restrict pattern, int cflags)
+regcomp (regex_t *_Restrict_ preg, const char *_Restrict_ pattern, int cflags)
{
reg_errcode_t ret;
reg_syntax_t syntax = ((cflags & REG_EXTENDED) ? RE_SYNTAX_POSIX_EXTENDED
@@ -525,7 +524,7 @@ weak_alias (__regcomp, regcomp)
from either regcomp or regexec. We don't use PREG here. */
size_t
-regerror (int errcode, const regex_t *__restrict preg, char *__restrict errbuf,
+regerror (int errcode, const regex_t *_Restrict_ preg, char *_Restrict_ errbuf,
size_t errbuf_size)
{
const char *msg;
@@ -546,17 +545,13 @@ regerror (int errcode, const regex_t *__restrict preg, char *__restrict errbuf,
if (BE (errbuf_size != 0, 1))
{
+ size_t cpy_size = msg_size;
if (BE (msg_size > errbuf_size, 0))
{
-#if defined HAVE_MEMPCPY || defined _LIBC
- *((char *) __mempcpy (errbuf, msg, errbuf_size - 1)) = '\0';
-#else
- memcpy (errbuf, msg, errbuf_size - 1);
- errbuf[errbuf_size - 1] = 0;
-#endif
+ cpy_size = errbuf_size - 1;
+ errbuf[cpy_size] = '\0';
}
- else
- memcpy (errbuf, msg, msg_size);
+ memcpy (errbuf, msg, cpy_size);
}
return msg_size;
@@ -574,7 +569,23 @@ weak_alias (__regerror, regerror)
static const bitset_t utf8_sb_map =
{
/* Set the first 128 bits. */
+# if defined __GNUC__ && !defined __STRICT_ANSI__
[0 ... 0x80 / BITSET_WORD_BITS - 1] = BITSET_WORD_MAX
+# else
+# if 4 * BITSET_WORD_BITS < ASCII_CHARS
+# error "bitset_word_t is narrower than 32 bits"
+# elif 3 * BITSET_WORD_BITS < ASCII_CHARS
+ BITSET_WORD_MAX, BITSET_WORD_MAX, BITSET_WORD_MAX,
+# elif 2 * BITSET_WORD_BITS < ASCII_CHARS
+ BITSET_WORD_MAX, BITSET_WORD_MAX,
+# elif 1 * BITSET_WORD_BITS < ASCII_CHARS
+ BITSET_WORD_MAX,
+# endif
+ (BITSET_WORD_MAX
+ >> (SBC_MAX % BITSET_WORD_BITS == 0
+ ? 0
+ : BITSET_WORD_BITS - SBC_MAX % BITSET_WORD_BITS))
+# endif
};
#endif
@@ -582,7 +593,7 @@ static const bitset_t utf8_sb_map =
static void
free_dfa_content (re_dfa_t *dfa)
{
- int i, j;
+ Idx i, j;
if (dfa->nodes)
for (i = 0; i < dfa->nodes_len; ++i)
@@ -632,9 +643,12 @@ free_dfa_content (re_dfa_t *dfa)
void
regfree (regex_t *preg)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
if (BE (dfa != NULL, 1))
- free_dfa_content (dfa);
+ {
+ lock_fini (dfa->lock);
+ free_dfa_content (dfa);
+ }
preg->buffer = NULL;
preg->allocated = 0;
@@ -687,7 +701,7 @@ re_comp (const char *s)
if (re_comp_buf.fastmap == NULL)
{
- re_comp_buf.fastmap = (char *) malloc (SBC_MAX);
+ re_comp_buf.fastmap = re_malloc (char, SBC_MAX);
if (re_comp_buf.fastmap == NULL)
return (char *) gettext (__re_error_msgid
+ __re_error_msgid_idx[(int) REG_ESPACE]);
@@ -704,7 +718,7 @@ re_comp (const char *s)
if (!ret)
return NULL;
- /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */
+ /* Yes, we're discarding 'const' here if !HAVE_LIBINTL. */
return (char *) gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
}
@@ -739,7 +753,7 @@ re_compile_internal (regex_t *preg, const char * pattern, size_t length,
preg->regs_allocated = REGS_UNALLOCATED;
/* Initialize the dfa. */
- dfa = (re_dfa_t *) preg->buffer;
+ dfa = preg->buffer;
if (BE (preg->allocated < sizeof (re_dfa_t), 0))
{
/* If zero allocated, but buffer is non-null, try to realloc
@@ -750,11 +764,13 @@ re_compile_internal (regex_t *preg, const char * pattern, size_t length,
if (dfa == NULL)
return REG_ESPACE;
preg->allocated = sizeof (re_dfa_t);
- preg->buffer = (unsigned char *) dfa;
+ preg->buffer = dfa;
}
preg->used = sizeof (re_dfa_t);
err = init_dfa (dfa, length);
+ if (BE (err == REG_NOERROR && lock_init (dfa->lock) != 0, 0))
+ err = REG_ESPACE;
if (BE (err != REG_NOERROR, 0))
{
free_dfa_content (dfa);
@@ -768,15 +784,14 @@ re_compile_internal (regex_t *preg, const char * pattern, size_t length,
strncpy (dfa->re_str, pattern, length + 1);
#endif
- __libc_lock_init (dfa->lock);
-
err = re_string_construct (&regexp, pattern, length, preg->translate,
- syntax & RE_ICASE, dfa);
+ (syntax & RE_ICASE) != 0, dfa);
if (BE (err != REG_NOERROR, 0))
{
re_compile_internal_free_return:
free_workarea_compile (preg);
re_string_destruct (&regexp);
+ lock_fini (dfa->lock);
free_dfa_content (dfa);
preg->buffer = NULL;
preg->allocated = 0;
@@ -809,6 +824,7 @@ re_compile_internal (regex_t *preg, const char * pattern, size_t length,
if (BE (err != REG_NOERROR, 0))
{
+ lock_fini (dfa->lock);
free_dfa_content (dfa);
preg->buffer = NULL;
preg->allocated = 0;
@@ -823,18 +839,32 @@ re_compile_internal (regex_t *preg, const char * pattern, size_t length,
static reg_errcode_t
init_dfa (re_dfa_t *dfa, size_t pat_len)
{
- unsigned int table_size;
+ __re_size_t table_size;
#ifndef _LIBC
- char *codeset_name;
+ const char *codeset_name;
+#endif
+#ifdef RE_ENABLE_I18N
+ size_t max_i18n_object_size = MAX (sizeof (wchar_t), sizeof (wctype_t));
+#else
+ size_t max_i18n_object_size = 0;
#endif
+ size_t max_object_size =
+ MAX (sizeof (struct re_state_table_entry),
+ MAX (sizeof (re_token_t),
+ MAX (sizeof (re_node_set),
+ MAX (sizeof (regmatch_t),
+ max_i18n_object_size))));
memset (dfa, '\0', sizeof (re_dfa_t));
/* Force allocation of str_tree_storage the first time. */
dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
- /* Avoid overflows. */
- if (pat_len == SIZE_MAX)
+ /* Avoid overflows. The extra "/ 2" is for the table_size doubling
+ calculation below, and for similar doubling calculations
+ elsewhere. And it's <= rather than <, because some of the
+ doubling calculations add 1 afterwards. */
+ if (BE (MIN (IDX_MAX, SIZE_MAX / max_object_size) / 2 <= pat_len, 0))
return REG_ESPACE;
dfa->nodes_alloc = pat_len + 1;
@@ -856,22 +886,11 @@ init_dfa (re_dfa_t *dfa, size_t pat_len)
dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
!= 0);
#else
-# ifdef HAVE_LANGINFO_CODESET
codeset_name = nl_langinfo (CODESET);
-# else
- codeset_name = getenv ("LC_ALL");
- if (codeset_name == NULL || codeset_name[0] == '\0')
- codeset_name = getenv ("LC_CTYPE");
- if (codeset_name == NULL || codeset_name[0] == '\0')
- codeset_name = getenv ("LANG");
- if (codeset_name == NULL)
- codeset_name = "";
- else if (strchr (codeset_name, '.') != NULL)
- codeset_name = strchr (codeset_name, '.') + 1;
-# endif
-
- if (strcasecmp (codeset_name, "UTF-8") == 0
- || strcasecmp (codeset_name, "UTF8") == 0)
+ if ((codeset_name[0] == 'U' || codeset_name[0] == 'u')
+ && (codeset_name[1] == 'T' || codeset_name[1] == 't')
+ && (codeset_name[2] == 'F' || codeset_name[2] == 'f')
+ && strcmp (codeset_name + 3 + (codeset_name[3] == '-'), "8") == 0)
dfa->is_utf8 = 1;
/* We check exhaustively in the loop below if this charset is a
@@ -920,9 +939,10 @@ init_dfa (re_dfa_t *dfa, size_t pat_len)
static void
init_word_char (re_dfa_t *dfa)
{
- dfa->word_ops_used = 1;
int i = 0;
+ int j;
int ch = 0;
+ dfa->word_ops_used = 1;
if (BE (dfa->map_notascii == 0, 1))
{
/* Avoid uint32_t and uint64_t as some non-GCC platforms lack
@@ -959,7 +979,7 @@ init_word_char (re_dfa_t *dfa)
general_case:
for (; i < BITSET_WORDS; ++i)
- for (int j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
+ for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
if (isalnum (ch) || ch == '_')
dfa->word_char[i] |= (bitset_word_t) 1 << j;
}
@@ -969,7 +989,7 @@ init_word_char (re_dfa_t *dfa)
static void
free_workarea_compile (regex_t *preg)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
bin_tree_storage_t *storage, *next;
for (storage = dfa->str_tree_storage; storage; storage = next)
{
@@ -988,7 +1008,7 @@ free_workarea_compile (regex_t *preg)
static reg_errcode_t
create_initial_state (re_dfa_t *dfa)
{
- int first, i;
+ Idx first, i;
reg_errcode_t err;
re_node_set init_nodes;
@@ -1007,10 +1027,10 @@ create_initial_state (re_dfa_t *dfa)
if (dfa->nbackref > 0)
for (i = 0; i < init_nodes.nelem; ++i)
{
- int node_idx = init_nodes.elems[i];
+ Idx node_idx = init_nodes.elems[i];
re_token_type_t type = dfa->nodes[node_idx].type;
- int clexp_idx;
+ Idx clexp_idx;
if (type != OP_BACK_REF)
continue;
for (clexp_idx = 0; clexp_idx < init_nodes.nelem; ++clexp_idx)
@@ -1026,14 +1046,13 @@ create_initial_state (re_dfa_t *dfa)
if (type == OP_BACK_REF)
{
- int dest_idx = dfa->edests[node_idx].elems[0];
+ Idx dest_idx = dfa->edests[node_idx].elems[0];
if (!re_node_set_contains (&init_nodes, dest_idx))
{
- reg_errcode_t err = re_node_set_merge (&init_nodes,
- dfa->eclosures
- + dest_idx);
- if (err != REG_NOERROR)
- return err;
+ reg_errcode_t merge_err
+ = re_node_set_merge (&init_nodes, dfa->eclosures + dest_idx);
+ if (merge_err != REG_NOERROR)
+ return merge_err;
i = 0;
}
}
@@ -1074,14 +1093,17 @@ create_initial_state (re_dfa_t *dfa)
static void
optimize_utf8 (re_dfa_t *dfa)
{
- int node, i, mb_chars = 0, has_period = 0;
+ Idx node;
+ int i;
+ bool mb_chars = false;
+ bool has_period = false;
for (node = 0; node < dfa->nodes_len; ++node)
switch (dfa->nodes[node].type)
{
case CHARACTER:
- if (dfa->nodes[node].opr.c >= 0x80)
- mb_chars = 1;
+ if (dfa->nodes[node].opr.c >= ASCII_CHARS)
+ mb_chars = true;
break;
case ANCHOR:
switch (dfa->nodes[node].opr.ctx_type)
@@ -1099,7 +1121,7 @@ optimize_utf8 (re_dfa_t *dfa)
}
break;
case OP_PERIOD:
- has_period = 1;
+ has_period = true;
break;
case OP_BACK_REF:
case OP_ALT:
@@ -1111,11 +1133,18 @@ optimize_utf8 (re_dfa_t *dfa)
case COMPLEX_BRACKET:
return;
case SIMPLE_BRACKET:
- /* Just double check. The non-ASCII range starts at 0x80. */
- assert (0x80 % BITSET_WORD_BITS == 0);
- for (i = 0x80 / BITSET_WORD_BITS; i < BITSET_WORDS; ++i)
- if (dfa->nodes[node].opr.sbcset[i])
- return;
+ /* Just double check. */
+ {
+ int rshift = (ASCII_CHARS % BITSET_WORD_BITS == 0
+ ? 0
+ : BITSET_WORD_BITS - ASCII_CHARS % BITSET_WORD_BITS);
+ for (i = ASCII_CHARS / BITSET_WORD_BITS; i < BITSET_WORDS; ++i)
+ {
+ if (dfa->nodes[node].opr.sbcset[i] >> rshift != 0)
+ return;
+ rshift = 0;
+ }
+ }
break;
default:
abort ();
@@ -1125,7 +1154,7 @@ optimize_utf8 (re_dfa_t *dfa)
for (node = 0; node < dfa->nodes_len; ++node)
{
if (dfa->nodes[node].type == CHARACTER
- && dfa->nodes[node].opr.c >= 0x80)
+ && dfa->nodes[node].opr.c >= ASCII_CHARS)
dfa->nodes[node].mb_partial = 0;
else if (dfa->nodes[node].type == OP_PERIOD)
dfa->nodes[node].type = OP_UTF8_PERIOD;
@@ -1144,22 +1173,22 @@ optimize_utf8 (re_dfa_t *dfa)
static reg_errcode_t
analyze (regex_t *preg)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
reg_errcode_t ret;
/* Allocate arrays. */
- dfa->nexts = re_malloc (int, dfa->nodes_alloc);
- dfa->org_indices = re_malloc (int, dfa->nodes_alloc);
+ dfa->nexts = re_malloc (Idx, dfa->nodes_alloc);
+ dfa->org_indices = re_malloc (Idx, dfa->nodes_alloc);
dfa->edests = re_malloc (re_node_set, dfa->nodes_alloc);
dfa->eclosures = re_malloc (re_node_set, dfa->nodes_alloc);
if (BE (dfa->nexts == NULL || dfa->org_indices == NULL || dfa->edests == NULL
|| dfa->eclosures == NULL, 0))
return REG_ESPACE;
- dfa->subexp_map = re_malloc (int, preg->re_nsub);
+ dfa->subexp_map = re_malloc (Idx, preg->re_nsub);
if (dfa->subexp_map != NULL)
{
- int i;
+ Idx i;
for (i = 0; i < preg->re_nsub; i++)
dfa->subexp_map[i] = i;
preorder (dfa->str_tree, optimize_subexps, dfa);
@@ -1168,7 +1197,7 @@ analyze (regex_t *preg)
break;
if (i == preg->re_nsub)
{
- free (dfa->subexp_map);
+ re_free (dfa->subexp_map);
dfa->subexp_map = NULL;
}
}
@@ -1284,7 +1313,7 @@ optimize_subexps (void *extra, bin_tree_t *node)
else if (node->token.type == SUBEXP
&& node->left && node->left->token.type == SUBEXP)
{
- int other_idx = node->left->token.opr.idx;
+ Idx other_idx = node->left->token.opr.idx;
node->left = node->left->left;
if (node->left)
@@ -1292,7 +1321,7 @@ optimize_subexps (void *extra, bin_tree_t *node)
dfa->subexp_map[other_idx] = dfa->subexp_map[node->token.opr.idx];
if (other_idx < BITSET_WORD_BITS)
- dfa->used_bkref_map &= ~((bitset_word_t) 1 << other_idx);
+ dfa->used_bkref_map &= ~((bitset_word_t) 1 << other_idx);
}
return REG_NOERROR;
@@ -1325,7 +1354,7 @@ lower_subexps (void *extra, bin_tree_t *node)
static bin_tree_t *
lower_subexp (reg_errcode_t *err, regex_t *preg, bin_tree_t *node)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
bin_tree_t *body = node->left;
bin_tree_t *op, *cls, *tree1, *tree;
@@ -1408,7 +1437,7 @@ static reg_errcode_t
link_nfa_nodes (void *extra, bin_tree_t *node)
{
re_dfa_t *dfa = (re_dfa_t *) extra;
- int idx = node->node_idx;
+ Idx idx = node->node_idx;
reg_errcode_t err = REG_NOERROR;
switch (node->token.type)
@@ -1423,7 +1452,7 @@ link_nfa_nodes (void *extra, bin_tree_t *node)
case OP_DUP_ASTERISK:
case OP_ALT:
{
- int left, right;
+ Idx left, right;
dfa->has_plural_match = 1;
if (node->left != NULL)
left = node->left->first->node_idx;
@@ -1465,14 +1494,15 @@ link_nfa_nodes (void *extra, bin_tree_t *node)
to their own constraint. */
static reg_errcode_t
-duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
- int root_node, unsigned int init_constraint)
+duplicate_node_closure (re_dfa_t *dfa, Idx top_org_node, Idx top_clone_node,
+ Idx root_node, unsigned int init_constraint)
{
- int org_node, clone_node, ret;
+ Idx org_node, clone_node;
+ bool ok;
unsigned int constraint = init_constraint;
for (org_node = top_org_node, clone_node = top_clone_node;;)
{
- int org_dest, clone_dest;
+ Idx org_dest, clone_dest;
if (dfa->nodes[org_node].type == OP_BACK_REF)
{
/* If the back reference epsilon-transit, its destination must
@@ -1485,8 +1515,8 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
if (BE (clone_dest == -1, 0))
return REG_ESPACE;
dfa->nexts[clone_node] = dfa->nexts[org_node];
- ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
else if (dfa->edests[org_node].nelem == 0)
@@ -1504,12 +1534,12 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
org_dest = dfa->edests[org_node].elems[0];
re_node_set_empty (dfa->edests + clone_node);
/* If the node is root_node itself, it means the epsilon closure
- has a loop. Then tie it to the destination of the root_node. */
+ has a loop. Then tie it to the destination of the root_node. */
if (org_node == root_node && clone_node != org_node)
{
- ret = re_node_set_insert (dfa->edests + clone_node, org_dest);
- if (BE (ret < 0, 0))
- return REG_ESPACE;
+ ok = re_node_set_insert (dfa->edests + clone_node, org_dest);
+ if (BE (! ok, 0))
+ return REG_ESPACE;
break;
}
/* In case the node has another constraint, append it. */
@@ -1517,8 +1547,8 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
clone_dest = duplicate_node (dfa, org_dest, constraint);
if (BE (clone_dest == -1, 0))
return REG_ESPACE;
- ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
else /* dfa->edests[org_node].nelem == 2 */
@@ -1536,8 +1566,8 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
clone_dest = duplicate_node (dfa, org_dest, constraint);
if (BE (clone_dest == -1, 0))
return REG_ESPACE;
- ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+ if (BE (! ok, 0))
return REG_ESPACE;
err = duplicate_node_closure (dfa, org_dest, clone_dest,
root_node, constraint);
@@ -1548,8 +1578,8 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
{
/* There is a duplicated node which satisfies the constraint,
use it to avoid infinite loop. */
- ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
@@ -1557,8 +1587,8 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
clone_dest = duplicate_node (dfa, org_dest, constraint);
if (BE (clone_dest == -1, 0))
return REG_ESPACE;
- ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
org_node = org_dest;
@@ -1570,11 +1600,11 @@ duplicate_node_closure (re_dfa_t *dfa, int top_org_node, int top_clone_node,
/* Search for a node which is duplicated from the node ORG_NODE, and
satisfies the constraint CONSTRAINT. */
-static int
-search_duplicated_node (const re_dfa_t *dfa, int org_node,
+static Idx
+search_duplicated_node (const re_dfa_t *dfa, Idx org_node,
unsigned int constraint)
{
- int idx;
+ Idx idx;
for (idx = dfa->nodes_len - 1; dfa->nodes[idx].duplicated && idx > 0; --idx)
{
if (org_node == dfa->org_indices[idx]
@@ -1588,10 +1618,10 @@ search_duplicated_node (const re_dfa_t *dfa, int org_node,
Return the index of the new node, or -1 if insufficient storage is
available. */
-static int
-duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint)
+static Idx
+duplicate_node (re_dfa_t *dfa, Idx org_idx, unsigned int constraint)
{
- int dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx]);
+ Idx dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx]);
if (BE (dup_idx != -1, 1))
{
dfa->nodes[dup_idx].constraint = constraint;
@@ -1607,17 +1637,18 @@ duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint)
static reg_errcode_t
calc_inveclosure (re_dfa_t *dfa)
{
- int src, idx, ret;
+ Idx src, idx;
+ bool ok;
for (idx = 0; idx < dfa->nodes_len; ++idx)
re_node_set_init_empty (dfa->inveclosures + idx);
for (src = 0; src < dfa->nodes_len; ++src)
{
- int *elems = dfa->eclosures[src].elems;
+ Idx *elems = dfa->eclosures[src].elems;
for (idx = 0; idx < dfa->eclosures[src].nelem; ++idx)
{
- ret = re_node_set_insert_last (dfa->inveclosures + elems[idx], src);
- if (BE (ret == -1, 0))
+ ok = re_node_set_insert_last (dfa->inveclosures + elems[idx], src);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
}
@@ -1630,11 +1661,12 @@ calc_inveclosure (re_dfa_t *dfa)
static reg_errcode_t
calc_eclosure (re_dfa_t *dfa)
{
- int node_idx, incomplete;
+ Idx node_idx;
+ bool incomplete;
#ifdef DEBUG
assert (dfa->nodes_len > 0);
#endif
- incomplete = 0;
+ incomplete = false;
/* For each nodes, calculate epsilon closure. */
for (node_idx = 0; ; ++node_idx)
{
@@ -1644,7 +1676,7 @@ calc_eclosure (re_dfa_t *dfa)
{
if (!incomplete)
break;
- incomplete = 0;
+ incomplete = false;
node_idx = 0;
}
@@ -1656,13 +1688,13 @@ calc_eclosure (re_dfa_t *dfa)
if (dfa->eclosures[node_idx].nelem != 0)
continue;
/* Calculate epsilon closure of 'node_idx'. */
- err = calc_eclosure_iter (&eclosure_elem, dfa, node_idx, 1);
+ err = calc_eclosure_iter (&eclosure_elem, dfa, node_idx, true);
if (BE (err != REG_NOERROR, 0))
return err;
if (dfa->eclosures[node_idx].nelem == 0)
{
- incomplete = 1;
+ incomplete = true;
re_node_set_free (&eclosure_elem);
}
}
@@ -1672,13 +1704,13 @@ calc_eclosure (re_dfa_t *dfa)
/* Calculate epsilon closure of NODE. */
static reg_errcode_t
-calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, int node, int root)
+calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, Idx node, bool root)
{
reg_errcode_t err;
- int i;
+ Idx i;
re_node_set eclosure;
- int ret;
- int incomplete = 0;
+ bool ok;
+ bool incomplete = false;
err = re_node_set_alloc (&eclosure, dfa->edests[node].nelem + 1);
if (BE (err != REG_NOERROR, 0))
return err;
@@ -1704,19 +1736,19 @@ calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, int node, int root)
for (i = 0; i < dfa->edests[node].nelem; ++i)
{
re_node_set eclosure_elem;
- int edest = dfa->edests[node].elems[i];
- /* If calculating the epsilon closure of `edest' is in progress,
+ Idx edest = dfa->edests[node].elems[i];
+ /* If calculating the epsilon closure of 'edest' is in progress,
return intermediate result. */
if (dfa->eclosures[edest].nelem == -1)
{
- incomplete = 1;
+ incomplete = true;
continue;
}
- /* If we haven't calculated the epsilon closure of `edest' yet,
+ /* If we haven't calculated the epsilon closure of 'edest' yet,
calculate now. Otherwise use calculated epsilon closure. */
if (dfa->eclosures[edest].nelem == 0)
{
- err = calc_eclosure_iter (&eclosure_elem, dfa, edest, 0);
+ err = calc_eclosure_iter (&eclosure_elem, dfa, edest, false);
if (BE (err != REG_NOERROR, 0))
return err;
}
@@ -1730,14 +1762,14 @@ calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, int node, int root)
the epsilon closure of this node is also incomplete. */
if (dfa->eclosures[edest].nelem == 0)
{
- incomplete = 1;
+ incomplete = true;
re_node_set_free (&eclosure_elem);
}
}
/* An epsilon closure includes itself. */
- ret = re_node_set_insert (&eclosure, node);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (&eclosure, node);
+ if (BE (! ok, 0))
return REG_ESPACE;
if (incomplete && !root)
dfa->eclosures[node].nelem = 0;
@@ -2046,16 +2078,18 @@ peek_token_bracket (re_token_t *token, re_string_t *input, reg_syntax_t syntax)
case '.':
token->type = OP_OPEN_COLL_ELEM;
break;
+
case '=':
token->type = OP_OPEN_EQUIV_CLASS;
break;
+
case ':':
if (syntax & RE_CHAR_CLASSES)
{
token->type = OP_OPEN_CHAR_CLASS;
break;
}
- /* else fall through. */
+ FALLTHROUGH;
default:
token->type = CHARACTER;
token->opr.c = c;
@@ -2099,7 +2133,7 @@ static bin_tree_t *
parse (re_string_t *regexp, regex_t *preg, reg_syntax_t syntax,
reg_errcode_t *err)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
bin_tree_t *tree, *eor, *root;
re_token_t current_token;
dfa->syntax = syntax;
@@ -2131,10 +2165,11 @@ parse (re_string_t *regexp, regex_t *preg, reg_syntax_t syntax,
static bin_tree_t *
parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
- reg_syntax_t syntax, int nest, reg_errcode_t *err)
+ reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
bin_tree_t *tree, *branch = NULL;
+ bitset_word_t initial_bkref_map = dfa->completed_bkref_map;
tree = parse_branch (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
@@ -2145,6 +2180,8 @@ parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
if (token->type != OP_ALT && token->type != END_OF_RE
&& (nest == 0 || token->type != OP_CLOSE_SUBEXP))
{
+ bitset_word_t accumulated_bkref_map = dfa->completed_bkref_map;
+ dfa->completed_bkref_map = initial_bkref_map;
branch = parse_branch (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && branch == NULL, 0))
{
@@ -2152,6 +2189,7 @@ parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
postorder (tree, free_tree, NULL);
return NULL;
}
+ dfa->completed_bkref_map |= accumulated_bkref_map;
}
else
branch = NULL;
@@ -2176,10 +2214,10 @@ parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
static bin_tree_t *
parse_branch (re_string_t *regexp, regex_t *preg, re_token_t *token,
- reg_syntax_t syntax, int nest, reg_errcode_t *err)
+ reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
{
- bin_tree_t *tree, *exp;
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ bin_tree_t *tree, *expr;
+ re_dfa_t *dfa = preg->buffer;
tree = parse_expression (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
@@ -2187,19 +2225,19 @@ parse_branch (re_string_t *regexp, regex_t *preg, re_token_t *token,
while (token->type != OP_ALT && token->type != END_OF_RE
&& (nest == 0 || token->type != OP_CLOSE_SUBEXP))
{
- exp = parse_expression (regexp, preg, token, syntax, nest, err);
- if (BE (*err != REG_NOERROR && exp == NULL, 0))
+ expr = parse_expression (regexp, preg, token, syntax, nest, err);
+ if (BE (*err != REG_NOERROR && expr == NULL, 0))
{
if (tree != NULL)
postorder (tree, free_tree, NULL);
return NULL;
}
- if (tree != NULL && exp != NULL)
+ if (tree != NULL && expr != NULL)
{
- bin_tree_t *newtree = create_tree (dfa, tree, exp, CONCAT);
+ bin_tree_t *newtree = create_tree (dfa, tree, expr, CONCAT);
if (newtree == NULL)
{
- postorder (exp, free_tree, NULL);
+ postorder (expr, free_tree, NULL);
postorder (tree, free_tree, NULL);
*err = REG_ESPACE;
return NULL;
@@ -2207,8 +2245,8 @@ parse_branch (re_string_t *regexp, regex_t *preg, re_token_t *token,
tree = newtree;
}
else if (tree == NULL)
- tree = exp;
- /* Otherwise exp == NULL, we don't need to create new tree. */
+ tree = expr;
+ /* Otherwise expr == NULL, we don't need to create new tree. */
}
return tree;
}
@@ -2221,9 +2259,9 @@ parse_branch (re_string_t *regexp, regex_t *preg, re_token_t *token,
static bin_tree_t *
parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
- reg_syntax_t syntax, int nest, reg_errcode_t *err)
+ reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
bin_tree_t *tree;
switch (token->type)
{
@@ -2253,16 +2291,19 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
}
#endif
break;
+
case OP_OPEN_SUBEXP:
tree = parse_sub_exp (regexp, preg, token, syntax, nest + 1, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
break;
+
case OP_OPEN_BRACKET:
tree = parse_bracket_exp (regexp, dfa, token, syntax, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
break;
+
case OP_BACK_REF:
if (!BE (dfa->completed_bkref_map & (1 << token->opr.idx), 1))
{
@@ -2279,13 +2320,14 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
++dfa->nbackref;
dfa->has_mb_node = 1;
break;
+
case OP_OPEN_DUP_NUM:
if (syntax & RE_CONTEXT_INVALID_DUP)
{
*err = REG_BADRPT;
return NULL;
}
- /* FALLTHROUGH */
+ FALLTHROUGH;
case OP_DUP_ASTERISK:
case OP_DUP_PLUS:
case OP_DUP_QUESTION:
@@ -2299,7 +2341,7 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
fetch_token (token, regexp, syntax);
return parse_expression (regexp, preg, token, syntax, nest, err);
}
- /* else fall through */
+ FALLTHROUGH;
case OP_CLOSE_SUBEXP:
if ((token->type == OP_CLOSE_SUBEXP) &&
!(syntax & RE_UNMATCHED_RIGHT_PAREN_ORD))
@@ -2307,7 +2349,7 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
*err = REG_ERPAREN;
return NULL;
}
- /* else fall through */
+ FALLTHROUGH;
case OP_CLOSE_DUP_NUM:
/* We treat it as a normal character. */
@@ -2322,6 +2364,7 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
return NULL;
}
break;
+
case ANCHOR:
if ((token->opr.ctx_type
& (WORD_DELIM | NOT_WORD_DELIM | WORD_FIRST | WORD_LAST))
@@ -2366,6 +2409,7 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
it must not be "<ANCHOR(^)><REPEAT(*)>". */
fetch_token (token, regexp, syntax);
return tree;
+
case OP_PERIOD:
tree = create_token_tree (dfa, NULL, NULL, token);
if (BE (tree == NULL, 0))
@@ -2376,30 +2420,35 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
if (dfa->mb_cur_max > 1)
dfa->has_mb_node = 1;
break;
+
case OP_WORD:
case OP_NOTWORD:
tree = build_charclass_op (dfa, regexp->trans,
- (const unsigned char *) "alnum",
- (const unsigned char *) "_",
+ "alnum",
+ "_",
token->type == OP_NOTWORD, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
break;
+
case OP_SPACE:
case OP_NOTSPACE:
tree = build_charclass_op (dfa, regexp->trans,
- (const unsigned char *) "space",
- (const unsigned char *) "",
+ "space",
+ "",
token->type == OP_NOTSPACE, err);
if (BE (*err != REG_NOERROR && tree == NULL, 0))
return NULL;
break;
+
case OP_ALT:
case END_OF_RE:
return NULL;
+
case BACK_SLASH:
*err = REG_EESCAPE;
return NULL;
+
default:
/* Must not happen? */
#ifdef DEBUG
@@ -2412,7 +2461,8 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
while (token->type == OP_DUP_ASTERISK || token->type == OP_DUP_PLUS
|| token->type == OP_DUP_QUESTION || token->type == OP_OPEN_DUP_NUM)
{
- bin_tree_t *dup_tree = parse_dup_op (tree, regexp, dfa, token, syntax, err);
+ bin_tree_t *dup_tree = parse_dup_op (tree, regexp, dfa, token,
+ syntax, err);
if (BE (*err != REG_NOERROR && dup_tree == NULL, 0))
{
if (tree != NULL)
@@ -2444,9 +2494,9 @@ parse_expression (re_string_t *regexp, regex_t *preg, re_token_t *token,
static bin_tree_t *
parse_sub_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
- reg_syntax_t syntax, int nest, reg_errcode_t *err)
+ reg_syntax_t syntax, Idx nest, reg_errcode_t *err)
{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ re_dfa_t *dfa = preg->buffer;
bin_tree_t *tree;
size_t cur_nsub;
cur_nsub = preg->re_nsub++;
@@ -2489,7 +2539,7 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
re_token_t *token, reg_syntax_t syntax, reg_errcode_t *err)
{
bin_tree_t *tree = NULL, *old_tree = NULL;
- int i, start, end, start_idx = re_string_cur_idx (regexp);
+ Idx i, start, end, start_idx = re_string_cur_idx (regexp);
re_token_t start_token = *token;
if (token->type == OP_OPEN_DUP_NUM)
@@ -2535,12 +2585,19 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
return elem;
}
- if (BE ((end != -1 && start > end) || token->type != OP_CLOSE_DUP_NUM, 0))
+ if (BE ((end != -1 && start > end)
+ || token->type != OP_CLOSE_DUP_NUM, 0))
{
/* First number greater than second. */
*err = REG_BADBR;
return NULL;
}
+
+ if (BE (RE_DUP_MAX < (end == -1 ? start : end), 0))
+ {
+ *err = REG_ESIZE;
+ return NULL;
+ }
}
else
{
@@ -2583,26 +2640,31 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
old_tree = NULL;
if (elem->token.type == SUBEXP)
- postorder (elem, mark_opt_subexp, (void *) (long) elem->token.opr.idx);
+ {
+ uintptr_t subidx = elem->token.opr.idx;
+ postorder (elem, mark_opt_subexp, (void *) subidx);
+ }
- tree = create_tree (dfa, elem, NULL, (end == -1 ? OP_DUP_ASTERISK : OP_ALT));
+ tree = create_tree (dfa, elem, NULL,
+ (end == -1 ? OP_DUP_ASTERISK : OP_ALT));
if (BE (tree == NULL, 0))
goto parse_dup_op_espace;
/* This loop is actually executed only when end != -1,
to rewrite <re>{0,n} as (<re>(<re>...<re>?)?)?... We have
already created the start+1-th copy. */
- for (i = start + 2; i <= end; ++i)
- {
- elem = duplicate_tree (elem, dfa);
- tree = create_tree (dfa, tree, elem, CONCAT);
- if (BE (elem == NULL || tree == NULL, 0))
- goto parse_dup_op_espace;
-
- tree = create_tree (dfa, tree, NULL, OP_ALT);
- if (BE (tree == NULL, 0))
- goto parse_dup_op_espace;
- }
+ if (TYPE_SIGNED (Idx) || end != -1)
+ for (i = start + 2; i <= end; ++i)
+ {
+ elem = duplicate_tree (elem, dfa);
+ tree = create_tree (dfa, tree, elem, CONCAT);
+ if (BE (elem == NULL || tree == NULL, 0))
+ goto parse_dup_op_espace;
+
+ tree = create_tree (dfa, tree, NULL, OP_ALT);
+ if (BE (tree == NULL, 0))
+ goto parse_dup_op_espace;
+ }
if (old_tree)
tree = create_tree (dfa, old_tree, tree, CONCAT);
@@ -2619,6 +2681,19 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
#define BRACKET_NAME_BUF_SIZE 32
#ifndef _LIBC
+
+# ifdef RE_ENABLE_I18N
+/* Convert the byte B to the corresponding wide character. In a
+ unibyte locale, treat B as itself if it is an encoding error.
+ In a multibyte locale, return WEOF if B is an encoding error. */
+static wint_t
+parse_byte (unsigned char b, re_charset_t *mbcset)
+{
+ wint_t wc = __btowc (b);
+ return wc == WEOF && !mbcset ? b : wc;
+}
+#endif
+
/* Local function for parse_bracket_exp only used in case of NOT _LIBC.
Build the range expression which starts from START_ELEM, and ends
at END_ELEM. The result are written to MBCSET and SBCSET.
@@ -2628,11 +2703,17 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
static reg_errcode_t
# ifdef RE_ENABLE_I18N
-build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
- bracket_elem_t *start_elem, bracket_elem_t *end_elem)
+build_range_exp (const reg_syntax_t syntax,
+ bitset_t sbcset,
+ re_charset_t *mbcset,
+ Idx *range_alloc,
+ const bracket_elem_t *start_elem,
+ const bracket_elem_t *end_elem)
# else /* not RE_ENABLE_I18N */
-build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
- bracket_elem_t *end_elem)
+build_range_exp (const reg_syntax_t syntax,
+ bitset_t sbcset,
+ const bracket_elem_t *start_elem,
+ const bracket_elem_t *end_elem)
# endif /* not RE_ENABLE_I18N */
{
unsigned int start_ch, end_ch;
@@ -2655,7 +2736,6 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
wchar_t wc;
wint_t start_wc;
wint_t end_wc;
- wchar_t cmp_buf[6] = {L'\0', L'\0', L'\0', L'\0', L'\0', L'\0'};
start_ch = ((start_elem->type == SB_CHAR) ? start_elem->opr.ch
: ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
@@ -2664,14 +2744,12 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
: ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
: 0));
start_wc = ((start_elem->type == SB_CHAR || start_elem->type == COLL_SYM)
- ? __btowc (start_ch) : start_elem->opr.wch);
+ ? parse_byte (start_ch, mbcset) : start_elem->opr.wch);
end_wc = ((end_elem->type == SB_CHAR || end_elem->type == COLL_SYM)
- ? __btowc (end_ch) : end_elem->opr.wch);
+ ? parse_byte (end_ch, mbcset) : end_elem->opr.wch);
if (start_wc == WEOF || end_wc == WEOF)
return REG_ECOLLATE;
- cmp_buf[0] = start_wc;
- cmp_buf[4] = end_wc;
- if (__wcscoll (cmp_buf, cmp_buf + 4) > 0)
+ else if (BE ((syntax & RE_NO_EMPTY_RANGES) && start_wc > end_wc, 0))
return REG_ERANGE;
/* Got valid collation sequence values, add them as a new entry.
@@ -2686,7 +2764,7 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
{
/* There is not enough space, need realloc. */
wchar_t *new_array_start, *new_array_end;
- int new_nranges;
+ Idx new_nranges;
/* +1 in case of mbcset->nranges is 0. */
new_nranges = 2 * mbcset->nranges + 1;
@@ -2698,7 +2776,11 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
new_nranges);
if (BE (new_array_start == NULL || new_array_end == NULL, 0))
- return REG_ESPACE;
+ {
+ re_free (new_array_start);
+ re_free (new_array_end);
+ return REG_ESPACE;
+ }
mbcset->range_starts = new_array_start;
mbcset->range_ends = new_array_end;
@@ -2712,9 +2794,7 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
/* Build the table for single byte characters. */
for (wc = 0; wc < SBC_MAX; ++wc)
{
- cmp_buf[2] = wc;
- if (__wcscoll (cmp_buf, cmp_buf + 2) <= 0
- && __wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
+ if (start_wc <= wc && wc <= end_wc)
bitset_set (sbcset, wc);
}
}
@@ -2749,7 +2829,7 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
static reg_errcode_t
# ifdef RE_ENABLE_I18N
build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
- int *coll_sym_alloc, const unsigned char *name)
+ Idx *coll_sym_alloc, const unsigned char *name)
# else /* not RE_ENABLE_I18N */
build_collating_symbol (bitset_t sbcset, const unsigned char *name)
# endif /* not RE_ENABLE_I18N */
@@ -2895,6 +2975,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
0))
return REG_ERANGE;
+ /* FIXME: Implement rational ranges here, too. */
start_collseq = lookup_collation_sequence_value (start_elem);
end_collseq = lookup_collation_sequence_value (end_elem);
/* Check start/end collation sequence values. */
@@ -2915,7 +2996,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
/* There is not enough space, need realloc. */
uint32_t *new_array_start;
uint32_t *new_array_end;
- int new_nranges;
+ Idx new_nranges;
/* +1 in case of mbcset->nranges is 0. */
new_nranges = 2 * mbcset->nranges + 1;
@@ -2962,7 +3043,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
auto inline reg_errcode_t
__attribute__ ((always_inline))
build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
- int *coll_sym_alloc, const unsigned char *name)
+ Idx *coll_sym_alloc, const unsigned char *name)
{
int32_t elem, idx;
size_t name_len = strlen ((const char *) name);
@@ -2992,7 +3073,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
{
/* Not enough, realloc it. */
/* +1 in case of mbcset->ncoll_syms is 0. */
- int new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
+ Idx new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
/* Use realloc since mbcset->coll_syms is NULL
if *alloc == 0. */
int32_t *new_coll_syms = re_realloc (mbcset->coll_syms, int32_t,
@@ -3022,13 +3103,13 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
re_bitset_ptr_t sbcset;
#ifdef RE_ENABLE_I18N
re_charset_t *mbcset;
- int coll_sym_alloc = 0, range_alloc = 0, mbchar_alloc = 0;
- int equiv_class_alloc = 0, char_class_alloc = 0;
+ Idx coll_sym_alloc = 0, range_alloc = 0, mbchar_alloc = 0;
+ Idx equiv_class_alloc = 0, char_class_alloc = 0;
#endif /* not RE_ENABLE_I18N */
- int non_match = 0;
+ bool non_match = false;
bin_tree_t *work_tree;
int token_len;
- int first_round = 1;
+ bool first_round = true;
#ifdef _LIBC
collseqmb = (const unsigned char *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
@@ -3075,7 +3156,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
#ifdef RE_ENABLE_I18N
mbcset->non_match = 1;
#endif /* not RE_ENABLE_I18N */
- non_match = 1;
+ non_match = true;
if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
bitset_set (sbcset, '\n');
re_string_skip_bytes (regexp, token_len); /* Skip a token. */
@@ -3097,7 +3178,8 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
unsigned char start_name_buf[BRACKET_NAME_BUF_SIZE];
unsigned char end_name_buf[BRACKET_NAME_BUF_SIZE];
reg_errcode_t ret;
- int token_len2 = 0, is_range_exp = 0;
+ int token_len2 = 0;
+ bool is_range_exp = false;
re_token_t token2;
start_elem.opr.name = start_name_buf;
@@ -3109,7 +3191,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
*err = ret;
goto parse_bracket_exp_free_return;
}
- first_round = 0;
+ first_round = false;
/* Get information about the next token. We need it in any case. */
token_len = peek_token_bracket (token, regexp, syntax);
@@ -3138,16 +3220,16 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
token->type = CHARACTER;
}
else
- is_range_exp = 1;
+ is_range_exp = true;
}
}
- if (is_range_exp == 1)
+ if (is_range_exp == true)
{
end_elem.opr.name = end_name_buf;
end_elem.type = COLL_SYM;
ret = parse_bracket_element (&end_elem, regexp, &token2, token_len2,
- dfa, syntax, 1);
+ dfa, syntax, true);
if (BE (ret != REG_NOERROR, 0))
{
*err = ret;
@@ -3161,11 +3243,11 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
&start_elem, &end_elem);
#else
# ifdef RE_ENABLE_I18N
- *err = build_range_exp (sbcset,
+ *err = build_range_exp (syntax, sbcset,
dfa->mb_cur_max > 1 ? mbcset : NULL,
&range_alloc, &start_elem, &end_elem);
# else
- *err = build_range_exp (sbcset, &start_elem, &end_elem);
+ *err = build_range_exp (syntax, sbcset, &start_elem, &end_elem);
# endif
#endif /* RE_ENABLE_I18N */
if (BE (*err != REG_NOERROR, 0))
@@ -3220,7 +3302,8 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
#ifdef RE_ENABLE_I18N
mbcset, &char_class_alloc,
#endif /* RE_ENABLE_I18N */
- start_elem.opr.name, syntax);
+ (const char *) start_elem.opr.name,
+ syntax);
if (BE (*err != REG_NOERROR, 0))
goto parse_bracket_exp_free_return;
break;
@@ -3317,7 +3400,7 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
static reg_errcode_t
parse_bracket_element (bracket_elem_t *elem, re_string_t *regexp,
re_token_t *token, int token_len, re_dfa_t *dfa,
- reg_syntax_t syntax, int accept_hyphen)
+ reg_syntax_t syntax, bool accept_hyphen)
{
#ifdef RE_ENABLE_I18N
int cur_char_size;
@@ -3404,7 +3487,7 @@ parse_bracket_symbol (bracket_elem_t *elem, re_string_t *regexp,
static reg_errcode_t
#ifdef RE_ENABLE_I18N
build_equiv_class (bitset_t sbcset, re_charset_t *mbcset,
- int *equiv_class_alloc, const unsigned char *name)
+ Idx *equiv_class_alloc, const unsigned char *name)
#else /* not RE_ENABLE_I18N */
build_equiv_class (bitset_t sbcset, const unsigned char *name)
#endif /* not RE_ENABLE_I18N */
@@ -3466,7 +3549,7 @@ build_equiv_class (bitset_t sbcset, const unsigned char *name)
{
/* Not enough, realloc it. */
/* +1 in case of mbcset->nequiv_classes is 0. */
- int new_equiv_class_alloc = 2 * mbcset->nequiv_classes + 1;
+ Idx new_equiv_class_alloc = 2 * mbcset->nequiv_classes + 1;
/* Use realloc since the array is NULL if *alloc == 0. */
int32_t *new_equiv_classes = re_realloc (mbcset->equiv_classes,
int32_t,
@@ -3497,15 +3580,15 @@ build_equiv_class (bitset_t sbcset, const unsigned char *name)
static reg_errcode_t
#ifdef RE_ENABLE_I18N
build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
- re_charset_t *mbcset, int *char_class_alloc,
- const unsigned char *class_name, reg_syntax_t syntax)
+ re_charset_t *mbcset, Idx *char_class_alloc,
+ const char *class_name, reg_syntax_t syntax)
#else /* not RE_ENABLE_I18N */
build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
- const unsigned char *class_name, reg_syntax_t syntax)
+ const char *class_name, reg_syntax_t syntax)
#endif /* not RE_ENABLE_I18N */
{
int i;
- const char *name = (const char *) class_name;
+ const char *name = class_name;
/* In case of REG_ICASE "upper" and "lower" match the both of
upper and lower cases. */
@@ -3519,7 +3602,7 @@ build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
{
/* Not enough, realloc it. */
/* +1 in case of mbcset->nchar_classes is 0. */
- int new_char_class_alloc = 2 * mbcset->nchar_classes + 1;
+ Idx new_char_class_alloc = 2 * mbcset->nchar_classes + 1;
/* Use realloc since array is NULL if *alloc == 0. */
wctype_t *new_char_classes = re_realloc (mbcset->char_classes, wctype_t,
new_char_class_alloc);
@@ -3536,13 +3619,13 @@ build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
if (BE (trans != NULL, 0)) \
{ \
for (i = 0; i < SBC_MAX; ++i) \
- if (ctype_func (i)) \
+ if (ctype_func (i)) \
bitset_set (sbcset, trans[i]); \
} \
else \
{ \
for (i = 0; i < SBC_MAX; ++i) \
- if (ctype_func (i)) \
+ if (ctype_func (i)) \
bitset_set (sbcset, i); \
} \
} while (0)
@@ -3579,40 +3662,35 @@ build_charclass (RE_TRANSLATE_TYPE trans, bitset_t sbcset,
static bin_tree_t *
build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
- const unsigned char *class_name,
- const unsigned char *extra, int non_match,
+ const char *class_name,
+ const char *extra, bool non_match,
reg_errcode_t *err)
{
re_bitset_ptr_t sbcset;
#ifdef RE_ENABLE_I18N
re_charset_t *mbcset;
- int alloc = 0;
+ Idx alloc = 0;
#endif /* not RE_ENABLE_I18N */
reg_errcode_t ret;
re_token_t br_token;
bin_tree_t *tree;
sbcset = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
-#ifdef RE_ENABLE_I18N
- mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
-#endif /* RE_ENABLE_I18N */
-
-#ifdef RE_ENABLE_I18N
- if (BE (sbcset == NULL || mbcset == NULL, 0))
-#else /* not RE_ENABLE_I18N */
if (BE (sbcset == NULL, 0))
-#endif /* not RE_ENABLE_I18N */
{
*err = REG_ESPACE;
return NULL;
}
-
- if (non_match)
- {
#ifdef RE_ENABLE_I18N
- mbcset->non_match = 1;
-#endif /* not RE_ENABLE_I18N */
+ mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
+ if (BE (mbcset == NULL, 0))
+ {
+ re_free (sbcset);
+ *err = REG_ESPACE;
+ return NULL;
}
+ mbcset->non_match = non_match;
+#endif /* RE_ENABLE_I18N */
/* We don't care the syntax in this case. */
ret = build_charclass (trans, sbcset,
@@ -3645,6 +3723,9 @@ build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
#endif
/* Build a tree for simple bracket. */
+#if defined GCC_LINT || defined lint
+ memset (&br_token, 0, sizeof br_token);
+#endif
br_token.type = SIMPLE_BRACKET;
br_token.opr.sbcset = sbcset;
tree = create_token_tree (dfa, NULL, NULL, &br_token);
@@ -3686,14 +3767,15 @@ build_charclass_op (re_dfa_t *dfa, RE_TRANSLATE_TYPE trans,
}
/* This is intended for the expressions like "a{1,3}".
- Fetch a number from `input', and return the number.
- Return -1, if the number field is empty like "{,1}".
- Return -2, If an error is occured. */
+ Fetch a number from 'input', and return the number.
+ Return -1 if the number field is empty like "{,1}".
+ Return RE_DUP_MAX + 1 if the number field is too large.
+ Return -2 if an error occurred. */
-static int
+static Idx
fetch_number (re_string_t *input, re_token_t *token, reg_syntax_t syntax)
{
- int num = -1;
+ Idx num = -1;
unsigned char c;
while (1)
{
@@ -3704,8 +3786,10 @@ fetch_number (re_string_t *input, re_token_t *token, reg_syntax_t syntax)
if (token->type == OP_CLOSE_DUP_NUM || c == ',')
break;
num = ((token->type != CHARACTER || c < '0' || '9' < c || num == -2)
- ? -2 : ((num == -1) ? c - '0' : num * 10 + c - '0'));
- num = (num > RE_DUP_MAX) ? -2 : num;
+ ? -2
+ : num == -1
+ ? c - '0'
+ : MIN (RE_DUP_MAX + 1, num * 10 + c - '0'));
}
return num;
}
@@ -3735,6 +3819,9 @@ create_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
re_token_type_t type)
{
re_token_t t;
+#if defined GCC_LINT || defined lint
+ memset (&t, 0, sizeof t);
+#endif
t.type = type;
return create_token_tree (dfa, left, right, &t);
}
@@ -3779,7 +3866,7 @@ create_token_tree (re_dfa_t *dfa, bin_tree_t *left, bin_tree_t *right,
static reg_errcode_t
mark_opt_subexp (void *extra, bin_tree_t *node)
{
- int idx = (int) (long) extra;
+ Idx idx = (uintptr_t) extra;
if (node->token.type == SUBEXP && node->token.opr.idx == idx)
node->token.opt_subexp = 1;
diff --git a/posix/regex.c b/posix/regex.c
index 68b5ef17ba..d6591e8670 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -15,14 +15,22 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
+#ifndef _LIBC
+# include <config.h>
+
+# if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+# endif
+# if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wold-style-definition"
+# pragma GCC diagnostic ignored "-Wtype-limits"
+# endif
#endif
-/* Make sure noone compiles this code with a C++ compiler. */
-#ifdef __cplusplus
+/* Make sure no one compiles this code with a C++ compiler. */
+#if defined __cplusplus && defined _LIBC
# error "This is C code, use a C compiler"
#endif
@@ -56,9 +64,6 @@
#undefs RE_DUP_MAX and sets it to the right value. */
#include <limits.h>
-/* This header defines the MIN and MAX macros. */
-#include <sys/param.h>
-
#include <regex.h>
#include "regex_internal.h"
diff --git a/posix/regex.h b/posix/regex.h
index e0b89158a8..32933bc6d5 100644
--- a/posix/regex.h
+++ b/posix/regex.h
@@ -15,7 +15,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
#ifndef _REGEX_H
#define _REGEX_H 1
@@ -27,6 +27,36 @@
extern "C" {
#endif
+/* Define __USE_GNU to declare GNU extensions that violate the
+ POSIX name space rules. */
+#ifdef _GNU_SOURCE
+# define __USE_GNU 1
+#endif
+
+#ifdef _REGEX_LARGE_OFFSETS
+
+/* Use types and values that are wide enough to represent signed and
+ unsigned byte offsets in memory. This currently works only when
+ the regex code is used outside of the GNU C library; it is not yet
+ supported within glibc itself, and glibc users should not define
+ _REGEX_LARGE_OFFSETS. */
+
+/* The type of object sizes. */
+typedef size_t __re_size_t;
+
+/* The type of object sizes, in places where the traditional code
+ uses unsigned long int. */
+typedef size_t __re_long_size_t;
+
+#else
+
+/* The traditional GNU regex implementation mishandles strings longer
+ than INT_MAX. */
+typedef unsigned int __re_size_t;
+typedef unsigned long int __re_long_size_t;
+
+#endif
+
/* The following two types have to be signed and unsigned integer type
wide enough to hold a value of a pointer. For most ANSI compilers
ptrdiff_t and size_t should be likely OK. Still size of these two
@@ -108,9 +138,9 @@ typedef unsigned long int reg_syntax_t;
If not set, newline is literal. */
# define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
-/* If this bit is set, then `{...}' defines an interval, and \{ and \}
+/* If this bit is set, then '{...}' defines an interval, and \{ and \}
are literals.
- If not set, then `\{...\}' defines an interval. */
+ If not set, then '\{...\}' defines an interval. */
# define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
/* If this bit is set, (...) defines a group, and \( and \) are literals.
@@ -165,8 +195,8 @@ typedef unsigned long int reg_syntax_t;
whether ^ should be special. */
# define RE_CARET_ANCHORS_HERE (RE_ICASE << 1)
-/* If this bit is set, then \{ cannot be first in an bre or
- immediately after an alternation or begin-group operator. */
+/* If this bit is set, then \{ cannot be first in a regex or
+ immediately after an alternation, open-group or \} operator. */
# define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1)
/* If this bit is set, then no_sub will be set to 1 during
@@ -185,9 +215,9 @@ extern reg_syntax_t re_syntax_options;
(The [[[ comments delimit what gets put into the Texinfo file, so
don't delete them!) */
/* [[[begin syntaxes]]] */
-#define RE_SYNTAX_EMACS 0
+# define RE_SYNTAX_EMACS 0
-#define RE_SYNTAX_AWK \
+# define RE_SYNTAX_AWK \
(RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \
| RE_NO_BK_PARENS | RE_NO_BK_REFS \
| RE_NO_BK_VBAR | RE_NO_EMPTY_RANGES \
@@ -195,52 +225,49 @@ extern reg_syntax_t re_syntax_options;
| RE_CHAR_CLASSES \
| RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
-#define RE_SYNTAX_GNU_AWK \
+# define RE_SYNTAX_GNU_AWK \
((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \
| RE_INVALID_INTERVAL_ORD) \
& ~(RE_DOT_NOT_NULL | RE_CONTEXT_INDEP_OPS \
| RE_CONTEXT_INVALID_OPS ))
-#define RE_SYNTAX_POSIX_AWK \
+# define RE_SYNTAX_POSIX_AWK \
(RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \
| RE_INTERVALS | RE_NO_GNU_OPS \
| RE_INVALID_INTERVAL_ORD)
-#define RE_SYNTAX_GREP \
- (RE_BK_PLUS_QM | RE_CHAR_CLASSES \
- | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS \
- | RE_NEWLINE_ALT)
+# define RE_SYNTAX_GREP \
+ ((RE_SYNTAX_POSIX_BASIC | RE_NEWLINE_ALT) \
+ & ~(RE_CONTEXT_INVALID_DUP | RE_DOT_NOT_NULL))
-#define RE_SYNTAX_EGREP \
- (RE_CHAR_CLASSES | RE_CONTEXT_INDEP_ANCHORS \
- | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE \
- | RE_NEWLINE_ALT | RE_NO_BK_PARENS \
- | RE_NO_BK_VBAR)
+# define RE_SYNTAX_EGREP \
+ ((RE_SYNTAX_POSIX_EXTENDED | RE_INVALID_INTERVAL_ORD | RE_NEWLINE_ALT) \
+ & ~(RE_CONTEXT_INVALID_OPS | RE_DOT_NOT_NULL))
-#define RE_SYNTAX_POSIX_EGREP \
- (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES \
- | RE_INVALID_INTERVAL_ORD)
+/* POSIX grep -E behavior is no longer incompatible with GNU. */
+# define RE_SYNTAX_POSIX_EGREP \
+ RE_SYNTAX_EGREP
/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff. */
-#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
+# define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
-#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
+# define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
/* Syntax bits common to both basic and extended POSIX regex syntax. */
-#define _RE_SYNTAX_POSIX_COMMON \
+# define _RE_SYNTAX_POSIX_COMMON \
(RE_CHAR_CLASSES | RE_DOT_NEWLINE | RE_DOT_NOT_NULL \
| RE_INTERVALS | RE_NO_EMPTY_RANGES)
-#define RE_SYNTAX_POSIX_BASIC \
+# define RE_SYNTAX_POSIX_BASIC \
(_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP)
/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this
isn't minimal, since other operators, such as \`, aren't disabled. */
-#define RE_SYNTAX_POSIX_MINIMAL_BASIC \
+# define RE_SYNTAX_POSIX_MINIMAL_BASIC \
(_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
-#define RE_SYNTAX_POSIX_EXTENDED \
+# define RE_SYNTAX_POSIX_EXTENDED \
(_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \
| RE_CONTEXT_INDEP_OPS | RE_NO_BK_BRACES \
| RE_NO_BK_PARENS | RE_NO_BK_VBAR \
@@ -248,25 +275,35 @@ extern reg_syntax_t re_syntax_options;
/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
removed and RE_NO_BK_REFS is added. */
-#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \
+# define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \
(_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \
| RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES \
| RE_NO_BK_PARENS | RE_NO_BK_REFS \
| RE_NO_BK_VBAR | RE_UNMATCHED_RIGHT_PAREN_ORD)
/* [[[end syntaxes]]] */
-
-/* Maximum number of duplicates an interval can allow. Some systems
- (erroneously) define this in other header files, but we want our
+
+/* Maximum number of duplicates an interval can allow. POSIX-conforming
+ systems might define this in <limits.h>, but we want our
value, so remove any previous define. */
+# ifdef _REGEX_INCLUDE_LIMITS_H
+# include <limits.h>
+# endif
# ifdef RE_DUP_MAX
# undef RE_DUP_MAX
# endif
-/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows. */
+
+/* RE_DUP_MAX is 2**15 - 1 because an earlier implementation stored
+ the counter as a 2-byte signed integer. This is no longer true, so
+ RE_DUP_MAX could be increased to (INT_MAX / 10 - 1), or to
+ ((SIZE_MAX - 9) / 10) if _REGEX_LARGE_OFFSETS is defined.
+ However, there would be a huge performance problem if someone
+ actually used a pattern like a\{214748363\}, so RE_DUP_MAX retains
+ its historical value. */
# define RE_DUP_MAX (0x7fff)
#endif
-/* POSIX `cflags' bits (i.e., information for `regcomp'). */
+/* POSIX 'cflags' bits (i.e., information for 'regcomp'). */
/* If this bit is set, then use extended regular expression syntax.
If not set, then use basic regular expression syntax. */
@@ -274,19 +311,19 @@ extern reg_syntax_t re_syntax_options;
/* If this bit is set, then ignore case when matching.
If not set, then case is significant. */
-#define REG_ICASE (REG_EXTENDED << 1)
+#define REG_ICASE (1 << 1)
/* If this bit is set, then anchors do not match at newline
characters in the string.
If not set, then anchors do match at newlines. */
-#define REG_NEWLINE (REG_ICASE << 1)
+#define REG_NEWLINE (1 << 2)
/* If this bit is set, then report only success or fail in regexec.
If not set, then returns differ between not matching and errors. */
-#define REG_NOSUB (REG_NEWLINE << 1)
+#define REG_NOSUB (1 << 3)
-/* POSIX `eflags' bits (i.e., information for regexec). */
+/* POSIX 'eflags' bits (i.e., information for regexec). */
/* If this bit is set, then the beginning-of-line operator doesn't match
the beginning of the string (presumably because it's not the
@@ -304,41 +341,60 @@ extern reg_syntax_t re_syntax_options;
/* If any error codes are removed, changed, or added, update the
- `re_error_msg' table in regex.c. */
+ '__re_error_msgid' table in regcomp.c. */
+
typedef enum
{
-#if defined _XOPEN_SOURCE || defined __USE_XOPEN2K
- REG_ENOSYS = -1, /* This will never happen for this implementation. */
-#endif
-
- REG_NOERROR = 0, /* Success. */
- REG_NOMATCH, /* Didn't find a match (for regexec). */
+ _REG_ENOSYS = -1, /* This will never happen for this implementation. */
+ _REG_NOERROR = 0, /* Success. */
+ _REG_NOMATCH, /* Didn't find a match (for regexec). */
/* POSIX regcomp return error codes. (In the order listed in the
standard.) */
- REG_BADPAT, /* Invalid pattern. */
- REG_ECOLLATE, /* Invalid collating element. */
- REG_ECTYPE, /* Invalid character class name. */
- REG_EESCAPE, /* Trailing backslash. */
- REG_ESUBREG, /* Invalid back reference. */
- REG_EBRACK, /* Unmatched left bracket. */
- REG_EPAREN, /* Parenthesis imbalance. */
- REG_EBRACE, /* Unmatched \{. */
- REG_BADBR, /* Invalid contents of \{\}. */
- REG_ERANGE, /* Invalid range end. */
- REG_ESPACE, /* Ran out of memory. */
- REG_BADRPT, /* No preceding re for repetition op. */
+ _REG_BADPAT, /* Invalid pattern. */
+ _REG_ECOLLATE, /* Invalid collating element. */
+ _REG_ECTYPE, /* Invalid character class name. */
+ _REG_EESCAPE, /* Trailing backslash. */
+ _REG_ESUBREG, /* Invalid back reference. */
+ _REG_EBRACK, /* Unmatched left bracket. */
+ _REG_EPAREN, /* Parenthesis imbalance. */
+ _REG_EBRACE, /* Unmatched \{. */
+ _REG_BADBR, /* Invalid contents of \{\}. */
+ _REG_ERANGE, /* Invalid range end. */
+ _REG_ESPACE, /* Ran out of memory. */
+ _REG_BADRPT, /* No preceding re for repetition op. */
/* Error codes we've added. */
- REG_EEND, /* Premature end. */
- REG_ESIZE, /* Compiled pattern bigger than 2^16 bytes. */
- REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */
+ _REG_EEND, /* Premature end. */
+ _REG_ESIZE, /* Too large (e.g., repeat count too large). */
+ _REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */
} reg_errcode_t;
+
+#if defined _XOPEN_SOURCE || defined __USE_XOPEN2K
+# define REG_ENOSYS _REG_ENOSYS
+#endif
+#define REG_NOERROR _REG_NOERROR
+#define REG_NOMATCH _REG_NOMATCH
+#define REG_BADPAT _REG_BADPAT
+#define REG_ECOLLATE _REG_ECOLLATE
+#define REG_ECTYPE _REG_ECTYPE
+#define REG_EESCAPE _REG_EESCAPE
+#define REG_ESUBREG _REG_ESUBREG
+#define REG_EBRACK _REG_EBRACK
+#define REG_EPAREN _REG_EPAREN
+#define REG_EBRACE _REG_EBRACE
+#define REG_BADBR _REG_BADBR
+#define REG_ERANGE _REG_ERANGE
+#define REG_ESPACE _REG_ESPACE
+#define REG_BADRPT _REG_BADRPT
+#define REG_EEND _REG_EEND
+#define REG_ESIZE _REG_ESIZE
+#define REG_ERPAREN _REG_ERPAREN
/* This data structure represents a compiled pattern. Before calling
- the pattern compiler, the fields `buffer', `allocated', `fastmap',
- and `translate' can be set. After the pattern has been compiled,
- the fields `re_nsub', `not_bol' and `not_eol' are available. All
+ the pattern compiler, the fields 'buffer', 'allocated', 'fastmap',
+ and 'translate' can be set. After the pattern has been compiled,
+ the fields 're_nsub', 'not_bol' and 'not_eol' are available. All
other fields are private to the regex routines. */
#ifndef RE_TRANSLATE_TYPE
@@ -356,16 +412,15 @@ typedef enum
struct re_pattern_buffer
{
- /* Space that holds the compiled pattern. It is declared as
- `unsigned char *' because its elements are sometimes used as
- array indexes. */
- unsigned char *__REPB_PREFIX(buffer);
+ /* Space that holds the compiled pattern. The type
+ 'struct re_dfa_t' is private and is not declared here. */
+ struct re_dfa_t *__REPB_PREFIX(buffer);
- /* Number of bytes to which `buffer' points. */
- unsigned long int __REPB_PREFIX(allocated);
+ /* Number of bytes to which 'buffer' points. */
+ __re_long_size_t __REPB_PREFIX(allocated);
- /* Number of bytes actually used in `buffer'. */
- unsigned long int __REPB_PREFIX(used);
+ /* Number of bytes actually used in 'buffer'. */
+ __re_long_size_t __REPB_PREFIX(used);
/* Syntax setting with which the pattern was compiled. */
reg_syntax_t __REPB_PREFIX(syntax);
@@ -385,13 +440,13 @@ struct re_pattern_buffer
size_t re_nsub;
/* Zero if this pattern cannot match the empty string, one else.
- Well, in truth it's used only in `re_search_2', to see whether or
+ Well, in truth it's used only in 're_search_2', to see whether or
not we should use the fastmap, so we don't set this absolutely
- perfectly; see `re_compile_fastmap' (the `duplicate' case). */
+ perfectly; see 're_compile_fastmap' (the "duplicate" case). */
unsigned __REPB_PREFIX(can_be_null) : 1;
- /* If REGS_UNALLOCATED, allocate space in the `regs' structure
- for `max (RE_NREGS, re_nsub + 1)' groups.
+ /* If REGS_UNALLOCATED, allocate space in the 'regs' structure
+ for 'max (RE_NREGS, re_nsub + 1)' groups.
If REGS_REALLOCATE, reallocate space if necessary.
If REGS_FIXED, use what's there. */
#ifdef __USE_GNU
@@ -401,11 +456,11 @@ struct re_pattern_buffer
#endif
unsigned __REPB_PREFIX(regs_allocated) : 2;
- /* Set to zero when `regex_compile' compiles a pattern; set to one
- by `re_compile_fastmap' if it updates the fastmap. */
+ /* Set to zero when 're_compile_pattern' compiles a pattern; set to
+ one by 're_compile_fastmap' if it updates the fastmap. */
unsigned __REPB_PREFIX(fastmap_accurate) : 1;
- /* If set, `re_match_2' does not return information about
+ /* If set, 're_match_2' does not return information about
subexpressions. */
unsigned __REPB_PREFIX(no_sub) : 1;
@@ -423,7 +478,17 @@ struct re_pattern_buffer
typedef struct re_pattern_buffer regex_t;
/* Type for byte offsets within the string. POSIX mandates this. */
+#ifdef _REGEX_LARGE_OFFSETS
+/* POSIX 1003.1-2008 requires that regoff_t be at least as wide as
+ ptrdiff_t and ssize_t. We don't know of any hosts where ptrdiff_t
+ is wider than ssize_t, so ssize_t is safe. ptrdiff_t is not
+ visible here, so use ssize_t. */
+typedef ssize_t regoff_t;
+#else
+/* The traditional GNU regex implementation mishandles strings longer
+ than INT_MAX. */
typedef int regoff_t;
+#endif
#ifdef __USE_GNU
@@ -431,15 +496,15 @@ typedef int regoff_t;
regex.texinfo for a full description of what registers match. */
struct re_registers
{
- unsigned num_regs;
+ __re_size_t num_regs;
regoff_t *start;
regoff_t *end;
};
-/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
- `re_match_2' returns information about at least this many registers
- the first time a `regs' structure is passed. */
+/* If 'regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
+ 're_match_2' returns information about at least this many registers
+ the first time a 'regs' structure is passed. */
# ifndef RE_NREGS
# define RE_NREGS 30
# endif
@@ -447,7 +512,7 @@ struct re_registers
/* POSIX specification for registers. Aside from the different names than
- `re_registers', POSIX uses an array of structures, instead of a
+ 're_registers', POSIX uses an array of structures, instead of a
structure of arrays. */
typedef struct
{
@@ -459,17 +524,17 @@ typedef struct
#ifdef __USE_GNU
/* Sets the current default syntax to SYNTAX, and return the old syntax.
- You can also simply assign to the `re_syntax_options' variable. */
+ You can also simply assign to the 're_syntax_options' variable. */
extern reg_syntax_t re_set_syntax (reg_syntax_t __syntax);
/* Compile the regular expression PATTERN, with length LENGTH
- and syntax given by the global `re_syntax_options', into the buffer
+ and syntax given by the global 're_syntax_options', into the buffer
BUFFER. Return NULL if successful, and an error string if not.
- To free the allocated storage, you must call `regfree' on BUFFER.
- Note that the translate table must either have been initialised by
- `regcomp', with a malloc'ed value, or set to NULL before calling
- `regfree'. */
+ To free the allocated storage, you must call 'regfree' on BUFFER.
+ Note that the translate table must either have been initialized by
+ 'regcomp', with a malloc'ed value, or set to NULL before calling
+ 'regfree'. */
extern const char *re_compile_pattern (const char *__pattern, size_t __length,
struct re_pattern_buffer *__buffer);
@@ -485,47 +550,52 @@ extern int re_compile_fastmap (struct re_pattern_buffer *__buffer);
characters. Return the starting position of the match, -1 for no
match, or -2 for an internal error. Also return register
information in REGS (if REGS and BUFFER->no_sub are nonzero). */
-extern int re_search (struct re_pattern_buffer *__buffer, const char *__string,
- int __length, int __start, int __range,
- struct re_registers *__regs);
+extern regoff_t re_search (struct re_pattern_buffer *__buffer,
+ const char *__String, regoff_t __length,
+ regoff_t __start, regoff_t __range,
+ struct re_registers *__regs);
-/* Like `re_search', but search in the concatenation of STRING1 and
+/* Like 're_search', but search in the concatenation of STRING1 and
STRING2. Also, stop searching at index START + STOP. */
-extern int re_search_2 (struct re_pattern_buffer *__buffer,
- const char *__string1, int __length1,
- const char *__string2, int __length2, int __start,
- int __range, struct re_registers *__regs, int __stop);
+extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer,
+ const char *__string1, regoff_t __length1,
+ const char *__string2, regoff_t __length2,
+ regoff_t __start, regoff_t __range,
+ struct re_registers *__regs,
+ regoff_t __stop);
-/* Like `re_search', but return how many characters in STRING the regexp
+/* Like 're_search', but return how many characters in STRING the regexp
in BUFFER matched, starting at position START. */
-extern int re_match (struct re_pattern_buffer *__buffer, const char *__string,
- int __length, int __start, struct re_registers *__regs);
+extern regoff_t re_match (struct re_pattern_buffer *__buffer,
+ const char *__String, regoff_t __length,
+ regoff_t __start, struct re_registers *__regs);
-/* Relates to `re_match' as `re_search_2' relates to `re_search'. */
-extern int re_match_2 (struct re_pattern_buffer *__buffer,
- const char *__string1, int __length1,
- const char *__string2, int __length2, int __start,
- struct re_registers *__regs, int __stop);
+/* Relates to 're_match' as 're_search_2' relates to 're_search'. */
+extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer,
+ const char *__string1, regoff_t __length1,
+ const char *__string2, regoff_t __length2,
+ regoff_t __start, struct re_registers *__regs,
+ regoff_t __stop);
/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
ENDS. Subsequent matches using BUFFER and REGS will use this memory
for recording register information. STARTS and ENDS must be
- allocated with malloc, and must each be at least `NUM_REGS * sizeof
+ allocated with malloc, and must each be at least 'NUM_REGS * sizeof
(regoff_t)' bytes long.
If NUM_REGS == 0, then subsequent matches should allocate their own
register data.
Unless this function is called, the first search or match using
- PATTERN_BUFFER will allocate its own register data, without
+ BUFFER will allocate its own register data, without
freeing the old data. */
extern void re_set_registers (struct re_pattern_buffer *__buffer,
struct re_registers *__regs,
- unsigned int __num_regs,
+ __re_size_t __num_regs,
regoff_t *__starts, regoff_t *__ends);
#endif /* Use GNU */
@@ -537,39 +607,46 @@ extern int re_exec (const char *);
# endif
#endif
-/* GCC 2.95 and later have "__restrict"; C99 compilers have
- "restrict", and "configure" may have defined "restrict". */
-#ifndef __restrict
-# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
-# if defined restrict || 199901L <= __STDC_VERSION__
-# define __restrict restrict
-# else
-# define __restrict
-# endif
+/* For plain 'restrict', use glibc's __restrict if defined.
+ Otherwise, GCC 2.95 and later have "__restrict"; C99 compilers have
+ "restrict", and "configure" may have defined "restrict".
+ Other compilers use __restrict, __restrict__, and _Restrict, and
+ 'configure' might #define 'restrict' to those words, so pick a
+ different name. */
+#ifndef _Restrict_
+# if defined __restrict || 2 < __GNUC__ + (95 <= __GNUC_MINOR__)
+# define _Restrict_ __restrict
+# elif 199901L <= __STDC_VERSION__ || defined restrict
+# define _Restrict_ restrict
+# else
+# define _Restrict_
# endif
#endif
-/* gcc 3.1 and up support the [restrict] syntax. */
-#ifndef __restrict_arr
-# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) \
- && !defined __GNUG__
-# define __restrict_arr __restrict
+/* For [restrict], use glibc's __restrict_arr if available.
+ Otherwise, GCC 3.1 (not in C++ mode) and C99 support [restrict]. */
+#ifndef _Restrict_arr_
+# ifdef __restrict_arr
+# define _Restrict_arr_ __restrict_arr
+# elif ((199901L <= __STDC_VERSION__ || 3 < __GNUC__ + (1 <= __GNUC_MINOR__)) \
+ && !defined __GNUG__)
+# define _Restrict_arr_ _Restrict_
# else
-# define __restrict_arr
+# define _Restrict_arr_
# endif
#endif
/* POSIX compatibility. */
-extern int regcomp (regex_t *__restrict __preg,
- const char *__restrict __pattern,
+extern int regcomp (regex_t *_Restrict_ __preg,
+ const char *_Restrict_ __pattern,
int __cflags);
-extern int regexec (const regex_t *__restrict __preg,
- const char *__restrict __string, size_t __nmatch,
- regmatch_t __pmatch[__restrict_arr],
+extern int regexec (const regex_t *_Restrict_ __preg,
+ const char *_Restrict_ __String, size_t __nmatch,
+ regmatch_t __pmatch[_Restrict_arr_],
int __eflags);
-extern size_t regerror (int __errcode, const regex_t *__restrict __preg,
- char *__restrict __errbuf, size_t __errbuf_size);
+extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg,
+ char *_Restrict_ __errbuf, size_t __errbuf_size);
extern void regfree (regex_t *__preg);
diff --git a/posix/regex_internal.c b/posix/regex_internal.c
index 906208343b..7f0083b918 100644
--- a/posix/regex_internal.c
+++ b/posix/regex_internal.c
@@ -15,19 +15,29 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
-static void re_string_construct_common (const char *str, int len,
+static void re_string_construct_common (const char *str, Idx len,
re_string_t *pstr,
- RE_TRANSLATE_TYPE trans, int icase,
+ RE_TRANSLATE_TYPE trans, bool icase,
const re_dfa_t *dfa);
static re_dfastate_t *create_ci_newstate (const re_dfa_t *dfa,
const re_node_set *nodes,
- unsigned int hash);
+ re_hashval_t hash);
static re_dfastate_t *create_cd_newstate (const re_dfa_t *dfa,
const re_node_set *nodes,
unsigned int context,
- unsigned int hash);
+ re_hashval_t hash);
+static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
+ Idx new_buf_len);
+#ifdef RE_ENABLE_I18N
+static void build_wcs_buffer (re_string_t *pstr);
+static reg_errcode_t build_wcs_upper_buffer (re_string_t *pstr);
+#endif /* RE_ENABLE_I18N */
+static void build_upper_buffer (re_string_t *pstr);
+static void re_string_translate_buffer (re_string_t *pstr);
+static unsigned int re_string_context_at (const re_string_t *input, Idx idx,
+ int eflags) __attribute__ ((pure));
/* Functions for string operation. */
@@ -36,11 +46,11 @@ static re_dfastate_t *create_cd_newstate (const re_dfa_t *dfa,
static reg_errcode_t
__attribute_warn_unused_result__
-re_string_allocate (re_string_t *pstr, const char *str, int len, int init_len,
- RE_TRANSLATE_TYPE trans, int icase, const re_dfa_t *dfa)
+re_string_allocate (re_string_t *pstr, const char *str, Idx len, Idx init_len,
+ RE_TRANSLATE_TYPE trans, bool icase, const re_dfa_t *dfa)
{
reg_errcode_t ret;
- int init_buf_len;
+ Idx init_buf_len;
/* Ensure at least one character fits into the buffers. */
if (init_len < dfa->mb_cur_max)
@@ -64,8 +74,8 @@ re_string_allocate (re_string_t *pstr, const char *str, int len, int init_len,
static reg_errcode_t
__attribute_warn_unused_result__
-re_string_construct (re_string_t *pstr, const char *str, int len,
- RE_TRANSLATE_TYPE trans, int icase, const re_dfa_t *dfa)
+re_string_construct (re_string_t *pstr, const char *str, Idx len,
+ RE_TRANSLATE_TYPE trans, bool icase, const re_dfa_t *dfa)
{
reg_errcode_t ret;
memset (pstr, '\0', sizeof (re_string_t));
@@ -127,7 +137,7 @@ re_string_construct (re_string_t *pstr, const char *str, int len,
static reg_errcode_t
__attribute_warn_unused_result__
-re_string_realloc_buffers (re_string_t *pstr, int new_buf_len)
+re_string_realloc_buffers (re_string_t *pstr, Idx new_buf_len)
{
#ifdef RE_ENABLE_I18N
if (pstr->mb_cur_max > 1)
@@ -135,8 +145,8 @@ re_string_realloc_buffers (re_string_t *pstr, int new_buf_len)
wint_t *new_wcs;
/* Avoid overflow in realloc. */
- const size_t max_object_size = MAX (sizeof (wint_t), sizeof (int));
- if (BE (SIZE_MAX / max_object_size < new_buf_len, 0))
+ const size_t max_object_size = MAX (sizeof (wint_t), sizeof (Idx));
+ if (BE (MIN (IDX_MAX, SIZE_MAX / max_object_size) < new_buf_len, 0))
return REG_ESPACE;
new_wcs = re_realloc (pstr->wcs, wint_t, new_buf_len);
@@ -145,7 +155,7 @@ re_string_realloc_buffers (re_string_t *pstr, int new_buf_len)
pstr->wcs = new_wcs;
if (pstr->offsets != NULL)
{
- int *new_offsets = re_realloc (pstr->offsets, int, new_buf_len);
+ Idx *new_offsets = re_realloc (pstr->offsets, Idx, new_buf_len);
if (BE (new_offsets == NULL, 0))
return REG_ESPACE;
pstr->offsets = new_offsets;
@@ -166,15 +176,15 @@ re_string_realloc_buffers (re_string_t *pstr, int new_buf_len)
static void
-re_string_construct_common (const char *str, int len, re_string_t *pstr,
- RE_TRANSLATE_TYPE trans, int icase,
+re_string_construct_common (const char *str, Idx len, re_string_t *pstr,
+ RE_TRANSLATE_TYPE trans, bool icase,
const re_dfa_t *dfa)
{
pstr->raw_mbs = (const unsigned char *) str;
pstr->len = len;
pstr->raw_len = len;
pstr->trans = trans;
- pstr->icase = icase ? 1 : 0;
+ pstr->icase = icase;
pstr->mbs_allocated = (trans != NULL || icase);
pstr->mb_cur_max = dfa->mb_cur_max;
pstr->is_utf8 = dfa->is_utf8;
@@ -206,7 +216,7 @@ build_wcs_buffer (re_string_t *pstr)
unsigned char buf[64];
#endif
mbstate_t prev_st;
- int byte_idx, end_idx, remain_len;
+ Idx byte_idx, end_idx, remain_len;
size_t mbclen;
/* Build the buffers from pstr->valid_len to either pstr->len or
@@ -269,7 +279,7 @@ __attribute_warn_unused_result__
build_wcs_upper_buffer (re_string_t *pstr)
{
mbstate_t prev_st;
- int src_idx, byte_idx, end_idx, remain_len;
+ Idx src_idx, byte_idx, end_idx, remain_len;
size_t mbclen;
#ifdef _LIBC
char buf[MB_LEN_MAX];
@@ -307,14 +317,13 @@ build_wcs_upper_buffer (re_string_t *pstr)
mbclen = __mbrtowc (&wc,
((const char *) pstr->raw_mbs + pstr->raw_mbs_idx
+ byte_idx), remain_len, &pstr->cur_state);
- if (BE (mbclen + 2 > 2, 1))
+ if (BE (mbclen < (size_t) -2, 1))
{
- wchar_t wcu = wc;
- if (__iswlower (wc))
+ wchar_t wcu = __towupper (wc);
+ if (wcu != wc)
{
size_t mbcdlen;
- wcu = __towupper (wc);
mbcdlen = __wcrtomb (buf, wcu, &prev_st);
if (BE (mbclen == mbcdlen, 1))
memcpy (pstr->mbs + byte_idx, buf, mbclen);
@@ -377,14 +386,13 @@ build_wcs_upper_buffer (re_string_t *pstr)
else
p = (const char *) pstr->raw_mbs + pstr->raw_mbs_idx + src_idx;
mbclen = __mbrtowc (&wc, p, remain_len, &pstr->cur_state);
- if (BE (mbclen + 2 > 2, 1))
+ if (BE (mbclen < (size_t) -2, 1))
{
- wchar_t wcu = wc;
- if (__iswlower (wc))
+ wchar_t wcu = __towupper (wc);
+ if (wcu != wc)
{
size_t mbcdlen;
- wcu = __towupper (wc);
mbcdlen = __wcrtomb ((char *) buf, wcu, &prev_st);
if (BE (mbclen == mbcdlen, 1))
memcpy (pstr->mbs + byte_idx, buf, mbclen);
@@ -400,7 +408,7 @@ build_wcs_upper_buffer (re_string_t *pstr)
if (pstr->offsets == NULL)
{
- pstr->offsets = re_malloc (int, pstr->bufs_len);
+ pstr->offsets = re_malloc (Idx, pstr->bufs_len);
if (pstr->offsets == NULL)
return REG_ESPACE;
@@ -483,11 +491,11 @@ build_wcs_upper_buffer (re_string_t *pstr)
/* Skip characters until the index becomes greater than NEW_RAW_IDX.
Return the index. */
-static int
-re_string_skip_chars (re_string_t *pstr, int new_raw_idx, wint_t *last_wc)
+static Idx
+re_string_skip_chars (re_string_t *pstr, Idx new_raw_idx, wint_t *last_wc)
{
mbstate_t prev_st;
- int rawbuf_idx;
+ Idx rawbuf_idx;
size_t mbclen;
wint_t wc = WEOF;
@@ -496,11 +504,11 @@ re_string_skip_chars (re_string_t *pstr, int new_raw_idx, wint_t *last_wc)
rawbuf_idx < new_raw_idx;)
{
wchar_t wc2;
- int remain_len = pstr->raw_len - rawbuf_idx;
+ Idx remain_len = pstr->raw_len - rawbuf_idx;
prev_st = pstr->cur_state;
mbclen = __mbrtowc (&wc2, (const char *) pstr->raw_mbs + rawbuf_idx,
remain_len, &pstr->cur_state);
- if (BE ((ssize_t) mbclen <= 0, 0))
+ if (BE (mbclen == (size_t) -2 || mbclen == (size_t) -1 || mbclen == 0, 0))
{
/* We treat these cases as a single byte character. */
if (mbclen == 0 || remain_len == 0)
@@ -511,7 +519,7 @@ re_string_skip_chars (re_string_t *pstr, int new_raw_idx, wint_t *last_wc)
pstr->cur_state = prev_st;
}
else
- wc = (wint_t) wc2;
+ wc = wc2;
/* Then proceed the next character. */
rawbuf_idx += mbclen;
}
@@ -526,7 +534,7 @@ re_string_skip_chars (re_string_t *pstr, int new_raw_idx, wint_t *last_wc)
static void
build_upper_buffer (re_string_t *pstr)
{
- int char_idx, end_idx;
+ Idx char_idx, end_idx;
end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
for (char_idx = pstr->valid_len; char_idx < end_idx; ++char_idx)
@@ -534,10 +542,7 @@ build_upper_buffer (re_string_t *pstr)
int ch = pstr->raw_mbs[pstr->raw_mbs_idx + char_idx];
if (BE (pstr->trans != NULL, 0))
ch = pstr->trans[ch];
- if (islower (ch))
- pstr->mbs[char_idx] = toupper (ch);
- else
- pstr->mbs[char_idx] = ch;
+ pstr->mbs[char_idx] = toupper (ch);
}
pstr->valid_len = char_idx;
pstr->valid_raw_len = char_idx;
@@ -548,7 +553,7 @@ build_upper_buffer (re_string_t *pstr)
static void
re_string_translate_buffer (re_string_t *pstr)
{
- int buf_idx, end_idx;
+ Idx buf_idx, end_idx;
end_idx = (pstr->bufs_len > pstr->len) ? pstr->len : pstr->bufs_len;
for (buf_idx = pstr->valid_len; buf_idx < end_idx; ++buf_idx)
@@ -567,10 +572,13 @@ re_string_translate_buffer (re_string_t *pstr)
static reg_errcode_t
__attribute_warn_unused_result__
-re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
+re_string_reconstruct (re_string_t *pstr, Idx idx, int eflags)
{
- int offset = idx - pstr->raw_mbs_idx;
- if (BE (offset < 0, 0))
+ Idx offset;
+
+ if (BE (pstr->raw_mbs_idx <= idx, 0))
+ offset = idx - pstr->raw_mbs_idx;
+ else
{
/* Reset buffer. */
#ifdef RE_ENABLE_I18N
@@ -599,7 +607,7 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
#ifdef RE_ENABLE_I18N
if (BE (pstr->offsets_needed, 0))
{
- int low = 0, high = pstr->valid_len, mid;
+ Idx low = 0, high = pstr->valid_len, mid;
do
{
mid = (high + low) / 2;
@@ -683,7 +691,7 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
{
#ifdef RE_ENABLE_I18N
/* No, skip all characters until IDX. */
- int prev_valid_len = pstr->valid_len;
+ Idx prev_valid_len = pstr->valid_len;
if (BE (pstr->offsets_needed, 0))
{
@@ -696,7 +704,7 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
#ifdef RE_ENABLE_I18N
if (pstr->mb_cur_max > 1)
{
- int wcs_idx;
+ Idx wcs_idx;
wint_t wc = WEOF;
if (pstr->is_utf8)
@@ -726,7 +734,7 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
{
mbstate_t cur_state;
wchar_t wc2;
- int mlen = raw + pstr->len - p;
+ Idx mlen = raw + pstr->len - p;
unsigned char buf[6];
size_t mbclen;
@@ -826,10 +834,11 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
}
static unsigned char
-__attribute ((pure))
-re_string_peek_byte_case (const re_string_t *pstr, int idx)
+__attribute__ ((pure))
+re_string_peek_byte_case (const re_string_t *pstr, Idx idx)
{
- int ch, off;
+ int ch;
+ Idx off;
/* Handle the common (easiest) cases first. */
if (BE (!pstr->mbs_allocated, 1))
@@ -870,7 +879,8 @@ re_string_fetch_byte_case (re_string_t *pstr)
#ifdef RE_ENABLE_I18N
if (pstr->offsets_needed)
{
- int off, ch;
+ Idx off;
+ int ch;
/* For tr_TR.UTF-8 [[:islower:]] there is
[[: CAPITAL LETTER I WITH DOT lower:]] in mbs. Skip
@@ -911,7 +921,7 @@ re_string_destruct (re_string_t *pstr)
/* Return the context at IDX in INPUT. */
static unsigned int
-re_string_context_at (const re_string_t *input, int idx, int eflags)
+re_string_context_at (const re_string_t *input, Idx idx, int eflags)
{
int c;
if (BE (idx < 0, 0))
@@ -925,7 +935,7 @@ re_string_context_at (const re_string_t *input, int idx, int eflags)
if (input->mb_cur_max > 1)
{
wint_t wc;
- int wc_idx = idx;
+ Idx wc_idx = idx;
while(input->wcs[wc_idx] == WEOF)
{
#if defined DEBUG && DEBUG
@@ -956,23 +966,23 @@ re_string_context_at (const re_string_t *input, int idx, int eflags)
static reg_errcode_t
__attribute_warn_unused_result__
-re_node_set_alloc (re_node_set *set, int size)
+re_node_set_alloc (re_node_set *set, Idx size)
{
set->alloc = size;
set->nelem = 0;
- set->elems = re_malloc (int, size);
- if (BE (set->elems == NULL, 0))
+ set->elems = re_malloc (Idx, size);
+ if (BE (set->elems == NULL, 0) && (MALLOC_0_IS_NONNULL || size != 0))
return REG_ESPACE;
return REG_NOERROR;
}
static reg_errcode_t
__attribute_warn_unused_result__
-re_node_set_init_1 (re_node_set *set, int elem)
+re_node_set_init_1 (re_node_set *set, Idx elem)
{
set->alloc = 1;
set->nelem = 1;
- set->elems = re_malloc (int, 1);
+ set->elems = re_malloc (Idx, 1);
if (BE (set->elems == NULL, 0))
{
set->alloc = set->nelem = 0;
@@ -984,10 +994,10 @@ re_node_set_init_1 (re_node_set *set, int elem)
static reg_errcode_t
__attribute_warn_unused_result__
-re_node_set_init_2 (re_node_set *set, int elem1, int elem2)
+re_node_set_init_2 (re_node_set *set, Idx elem1, Idx elem2)
{
set->alloc = 2;
- set->elems = re_malloc (int, 2);
+ set->elems = re_malloc (Idx, 2);
if (BE (set->elems == NULL, 0))
return REG_ESPACE;
if (elem1 == elem2)
@@ -1020,13 +1030,13 @@ re_node_set_init_copy (re_node_set *dest, const re_node_set *src)
if (src->nelem > 0)
{
dest->alloc = dest->nelem;
- dest->elems = re_malloc (int, dest->alloc);
+ dest->elems = re_malloc (Idx, dest->alloc);
if (BE (dest->elems == NULL, 0))
{
dest->alloc = dest->nelem = 0;
return REG_ESPACE;
}
- memcpy (dest->elems, src->elems, src->nelem * sizeof (int));
+ memcpy (dest->elems, src->elems, src->nelem * sizeof (Idx));
}
else
re_node_set_init_empty (dest);
@@ -1042,7 +1052,7 @@ __attribute_warn_unused_result__
re_node_set_add_intersect (re_node_set *dest, const re_node_set *src1,
const re_node_set *src2)
{
- int i1, i2, is, id, delta, sbase;
+ Idx i1, i2, is, id, delta, sbase;
if (src1->nelem == 0 || src2->nelem == 0)
return REG_NOERROR;
@@ -1050,8 +1060,8 @@ re_node_set_add_intersect (re_node_set *dest, const re_node_set *src1,
conservative estimate. */
if (src1->nelem + src2->nelem + dest->nelem > dest->alloc)
{
- int new_alloc = src1->nelem + src2->nelem + dest->alloc;
- int *new_elems = re_realloc (dest->elems, int, new_alloc);
+ Idx new_alloc = src1->nelem + src2->nelem + dest->alloc;
+ Idx *new_elems = re_realloc (dest->elems, Idx, new_alloc);
if (BE (new_elems == NULL, 0))
return REG_ESPACE;
dest->elems = new_elems;
@@ -1073,7 +1083,7 @@ re_node_set_add_intersect (re_node_set *dest, const re_node_set *src1,
--id;
if (id < 0 || dest->elems[id] != src1->elems[i1])
- dest->elems[--sbase] = src1->elems[i1];
+ dest->elems[--sbase] = src1->elems[i1];
if (--i1 < 0 || --i2 < 0)
break;
@@ -1120,7 +1130,7 @@ re_node_set_add_intersect (re_node_set *dest, const re_node_set *src1,
}
/* Copy remaining SRC elements. */
- memcpy (dest->elems, dest->elems + sbase, delta * sizeof (int));
+ memcpy (dest->elems, dest->elems + sbase, delta * sizeof (Idx));
return REG_NOERROR;
}
@@ -1133,11 +1143,11 @@ __attribute_warn_unused_result__
re_node_set_init_union (re_node_set *dest, const re_node_set *src1,
const re_node_set *src2)
{
- int i1, i2, id;
+ Idx i1, i2, id;
if (src1 != NULL && src1->nelem > 0 && src2 != NULL && src2->nelem > 0)
{
dest->alloc = src1->nelem + src2->nelem;
- dest->elems = re_malloc (int, dest->alloc);
+ dest->elems = re_malloc (Idx, dest->alloc);
if (BE (dest->elems == NULL, 0))
return REG_ESPACE;
}
@@ -1165,13 +1175,13 @@ re_node_set_init_union (re_node_set *dest, const re_node_set *src1,
if (i1 < src1->nelem)
{
memcpy (dest->elems + id, src1->elems + i1,
- (src1->nelem - i1) * sizeof (int));
+ (src1->nelem - i1) * sizeof (Idx));
id += src1->nelem - i1;
}
else if (i2 < src2->nelem)
{
memcpy (dest->elems + id, src2->elems + i2,
- (src2->nelem - i2) * sizeof (int));
+ (src2->nelem - i2) * sizeof (Idx));
id += src2->nelem - i2;
}
dest->nelem = id;
@@ -1185,13 +1195,13 @@ static reg_errcode_t
__attribute_warn_unused_result__
re_node_set_merge (re_node_set *dest, const re_node_set *src)
{
- int is, id, sbase, delta;
+ Idx is, id, sbase, delta;
if (src == NULL || src->nelem == 0)
return REG_NOERROR;
if (dest->alloc < 2 * src->nelem + dest->nelem)
{
- int new_alloc = 2 * (src->nelem + dest->alloc);
- int *new_buffer = re_realloc (dest->elems, int, new_alloc);
+ Idx new_alloc = 2 * (src->nelem + dest->alloc);
+ Idx *new_buffer = re_realloc (dest->elems, Idx, new_alloc);
if (BE (new_buffer == NULL, 0))
return REG_ESPACE;
dest->elems = new_buffer;
@@ -1201,7 +1211,7 @@ re_node_set_merge (re_node_set *dest, const re_node_set *src)
if (BE (dest->nelem == 0, 0))
{
dest->nelem = src->nelem;
- memcpy (dest->elems, src->elems, src->nelem * sizeof (int));
+ memcpy (dest->elems, src->elems, src->nelem * sizeof (Idx));
return REG_NOERROR;
}
@@ -1222,7 +1232,7 @@ re_node_set_merge (re_node_set *dest, const re_node_set *src)
{
/* If DEST is exhausted, the remaining items of SRC must be unique. */
sbase -= is + 1;
- memcpy (dest->elems + sbase, src->elems, (is + 1) * sizeof (int));
+ memcpy (dest->elems + sbase, src->elems, (is + 1) * sizeof (Idx));
}
id = dest->nelem - 1;
@@ -1251,7 +1261,7 @@ re_node_set_merge (re_node_set *dest, const re_node_set *src)
{
/* Copy remaining SRC elements. */
memcpy (dest->elems, dest->elems + sbase,
- delta * sizeof (int));
+ delta * sizeof (Idx));
break;
}
}
@@ -1262,38 +1272,33 @@ re_node_set_merge (re_node_set *dest, const re_node_set *src)
/* Insert the new element ELEM to the re_node_set* SET.
SET should not already have ELEM.
- return -1 if an error is occured, return 1 otherwise. */
+ Return true if successful. */
-static int
+static bool
__attribute_warn_unused_result__
-re_node_set_insert (re_node_set *set, int elem)
+re_node_set_insert (re_node_set *set, Idx elem)
{
- int idx;
+ Idx idx;
/* In case the set is empty. */
if (set->alloc == 0)
- {
- if (BE (re_node_set_init_1 (set, elem) == REG_NOERROR, 1))
- return 1;
- else
- return -1;
- }
+ return BE (re_node_set_init_1 (set, elem) == REG_NOERROR, 1);
if (BE (set->nelem, 0) == 0)
{
/* We already guaranteed above that set->alloc != 0. */
set->elems[0] = elem;
++set->nelem;
- return 1;
+ return true;
}
/* Realloc if we need. */
if (set->alloc == set->nelem)
{
- int *new_elems;
+ Idx *new_elems;
set->alloc = set->alloc * 2;
- new_elems = re_realloc (set->elems, int, set->alloc);
+ new_elems = re_realloc (set->elems, Idx, set->alloc);
if (BE (new_elems == NULL, 0))
- return -1;
+ return false;
set->elems = new_elems;
}
@@ -1314,56 +1319,56 @@ re_node_set_insert (re_node_set *set, int elem)
/* Insert the new element. */
set->elems[idx] = elem;
++set->nelem;
- return 1;
+ return true;
}
/* Insert the new element ELEM to the re_node_set* SET.
SET should not already have any element greater than or equal to ELEM.
- Return -1 if an error is occured, return 1 otherwise. */
+ Return true if successful. */
-static int
+static bool
__attribute_warn_unused_result__
-re_node_set_insert_last (re_node_set *set, int elem)
+re_node_set_insert_last (re_node_set *set, Idx elem)
{
/* Realloc if we need. */
if (set->alloc == set->nelem)
{
- int *new_elems;
+ Idx *new_elems;
set->alloc = (set->alloc + 1) * 2;
- new_elems = re_realloc (set->elems, int, set->alloc);
+ new_elems = re_realloc (set->elems, Idx, set->alloc);
if (BE (new_elems == NULL, 0))
- return -1;
+ return false;
set->elems = new_elems;
}
/* Insert the new element. */
set->elems[set->nelem++] = elem;
- return 1;
+ return true;
}
/* Compare two node sets SET1 and SET2.
- return 1 if SET1 and SET2 are equivalent, return 0 otherwise. */
+ Return true if SET1 and SET2 are equivalent. */
-static int
-__attribute ((pure))
+static bool
+__attribute__ ((pure))
re_node_set_compare (const re_node_set *set1, const re_node_set *set2)
{
- int i;
+ Idx i;
if (set1 == NULL || set2 == NULL || set1->nelem != set2->nelem)
- return 0;
+ return false;
for (i = set1->nelem ; --i >= 0 ; )
if (set1->elems[i] != set2->elems[i])
- return 0;
- return 1;
+ return false;
+ return true;
}
/* Return (idx + 1) if SET contains the element ELEM, return 0 otherwise. */
-static int
-__attribute ((pure))
-re_node_set_contains (const re_node_set *set, int elem)
+static Idx
+__attribute__ ((pure))
+re_node_set_contains (const re_node_set *set, Idx elem)
{
- unsigned int idx, right, mid;
+ __re_size_t idx, right, mid;
if (set->nelem <= 0)
return 0;
@@ -1382,7 +1387,7 @@ re_node_set_contains (const re_node_set *set, int elem)
}
static void
-re_node_set_remove_at (re_node_set *set, int idx)
+re_node_set_remove_at (re_node_set *set, Idx idx)
{
if (idx < 0 || idx >= set->nelem)
return;
@@ -1393,37 +1398,42 @@ re_node_set_remove_at (re_node_set *set, int idx)
/* Add the token TOKEN to dfa->nodes, and return the index of the token.
- Or return -1, if an error will be occured. */
+ Or return -1 if an error occurred. */
-static int
+static Idx
re_dfa_add_node (re_dfa_t *dfa, re_token_t token)
{
- int type = token.type;
if (BE (dfa->nodes_len >= dfa->nodes_alloc, 0))
{
size_t new_nodes_alloc = dfa->nodes_alloc * 2;
- int *new_nexts, *new_indices;
+ Idx *new_nexts, *new_indices;
re_node_set *new_edests, *new_eclosures;
re_token_t *new_nodes;
/* Avoid overflows in realloc. */
const size_t max_object_size = MAX (sizeof (re_token_t),
MAX (sizeof (re_node_set),
- sizeof (int)));
- if (BE (SIZE_MAX / max_object_size < new_nodes_alloc, 0))
+ sizeof (Idx)));
+ if (BE (MIN (IDX_MAX, SIZE_MAX / max_object_size) < new_nodes_alloc, 0))
return -1;
new_nodes = re_realloc (dfa->nodes, re_token_t, new_nodes_alloc);
if (BE (new_nodes == NULL, 0))
return -1;
dfa->nodes = new_nodes;
- new_nexts = re_realloc (dfa->nexts, int, new_nodes_alloc);
- new_indices = re_realloc (dfa->org_indices, int, new_nodes_alloc);
+ new_nexts = re_realloc (dfa->nexts, Idx, new_nodes_alloc);
+ new_indices = re_realloc (dfa->org_indices, Idx, new_nodes_alloc);
new_edests = re_realloc (dfa->edests, re_node_set, new_nodes_alloc);
new_eclosures = re_realloc (dfa->eclosures, re_node_set, new_nodes_alloc);
if (BE (new_nexts == NULL || new_indices == NULL
|| new_edests == NULL || new_eclosures == NULL, 0))
- return -1;
+ {
+ re_free (new_nexts);
+ re_free (new_indices);
+ re_free (new_edests);
+ re_free (new_eclosures);
+ return -1;
+ }
dfa->nexts = new_nexts;
dfa->org_indices = new_indices;
dfa->edests = new_edests;
@@ -1434,7 +1444,8 @@ re_dfa_add_node (re_dfa_t *dfa, re_token_t token)
dfa->nodes[dfa->nodes_len].constraint = 0;
#ifdef RE_ENABLE_I18N
dfa->nodes[dfa->nodes_len].accept_mb =
- (type == OP_PERIOD && dfa->mb_cur_max > 1) || type == COMPLEX_BRACKET;
+ ((token.type == OP_PERIOD && dfa->mb_cur_max > 1)
+ || token.type == COMPLEX_BRACKET);
#endif
dfa->nexts[dfa->nodes_len] = -1;
re_node_set_init_empty (dfa->edests + dfa->nodes_len);
@@ -1442,11 +1453,11 @@ re_dfa_add_node (re_dfa_t *dfa, re_token_t token)
return dfa->nodes_len++;
}
-static inline unsigned int
+static re_hashval_t
calc_state_hash (const re_node_set *nodes, unsigned int context)
{
- unsigned int hash = nodes->nelem + context;
- int i;
+ re_hashval_t hash = nodes->nelem + context;
+ Idx i;
for (i = 0 ; i < nodes->nelem ; i++)
hash += nodes->elems[i];
return hash;
@@ -1466,10 +1477,14 @@ __attribute_warn_unused_result__
re_acquire_state (reg_errcode_t *err, const re_dfa_t *dfa,
const re_node_set *nodes)
{
- unsigned int hash;
+ re_hashval_t hash;
re_dfastate_t *new_state;
struct re_state_table_entry *spot;
- int i;
+ Idx i;
+#if defined GCC_LINT || defined lint
+ /* Suppress bogus uninitialized-variable warnings. */
+ *err = REG_NOERROR;
+#endif
if (BE (nodes->nelem == 0, 0))
{
*err = REG_NOERROR;
@@ -1510,10 +1525,14 @@ __attribute_warn_unused_result__
re_acquire_state_context (reg_errcode_t *err, const re_dfa_t *dfa,
const re_node_set *nodes, unsigned int context)
{
- unsigned int hash;
+ re_hashval_t hash;
re_dfastate_t *new_state;
struct re_state_table_entry *spot;
- int i;
+ Idx i;
+#if defined GCC_LINT || defined lint
+ /* Suppress bogus uninitialized-variable warnings. */
+ *err = REG_NOERROR;
+#endif
if (nodes->nelem == 0)
{
*err = REG_NOERROR;
@@ -1530,7 +1549,7 @@ re_acquire_state_context (reg_errcode_t *err, const re_dfa_t *dfa,
&& re_node_set_compare (state->entrance_nodes, nodes))
return state;
}
- /* There are no appropriate state in `dfa', create the new one. */
+ /* There are no appropriate state in 'dfa', create the new one. */
new_state = create_cd_newstate (dfa, nodes, context, hash);
if (BE (new_state == NULL, 0))
*err = REG_ESPACE;
@@ -1545,11 +1564,11 @@ re_acquire_state_context (reg_errcode_t *err, const re_dfa_t *dfa,
static reg_errcode_t
__attribute_warn_unused_result__
register_state (const re_dfa_t *dfa, re_dfastate_t *newstate,
- unsigned int hash)
+ re_hashval_t hash)
{
struct re_state_table_entry *spot;
reg_errcode_t err;
- int i;
+ Idx i;
newstate->hash = hash;
err = re_node_set_alloc (&newstate->non_eps_nodes, newstate->nodes.nelem);
@@ -1557,16 +1576,16 @@ register_state (const re_dfa_t *dfa, re_dfastate_t *newstate,
return REG_ESPACE;
for (i = 0; i < newstate->nodes.nelem; i++)
{
- int elem = newstate->nodes.elems[i];
+ Idx elem = newstate->nodes.elems[i];
if (!IS_EPSILON_NODE (dfa->nodes[elem].type))
- if (re_node_set_insert_last (&newstate->non_eps_nodes, elem) < 0)
+ if (! re_node_set_insert_last (&newstate->non_eps_nodes, elem))
return REG_ESPACE;
}
spot = dfa->state_table + (hash & dfa->state_hash_mask);
if (BE (spot->alloc <= spot->num, 0))
{
- int new_alloc = 2 * spot->num + 2;
+ Idx new_alloc = 2 * spot->num + 2;
re_dfastate_t **new_array = re_realloc (spot->array, re_dfastate_t *,
new_alloc);
if (BE (new_array == NULL, 0))
@@ -1600,9 +1619,9 @@ free_state (re_dfastate_t *state)
static re_dfastate_t *
__attribute_warn_unused_result__
create_ci_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
- unsigned int hash)
+ re_hashval_t hash)
{
- int i;
+ Idx i;
reg_errcode_t err;
re_dfastate_t *newstate;
@@ -1650,9 +1669,9 @@ create_ci_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
static re_dfastate_t *
__attribute_warn_unused_result__
create_cd_newstate (const re_dfa_t *dfa, const re_node_set *nodes,
- unsigned int context, unsigned int hash)
+ unsigned int context, re_hashval_t hash)
{
- int i, nctx_nodes = 0;
+ Idx i, nctx_nodes = 0;
reg_errcode_t err;
re_dfastate_t *newstate;
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 41bf2d371c..3b836ed206 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -15,7 +15,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
#ifndef _REGEX_INTERNAL_H
#define _REGEX_INTERNAL_H 1
@@ -26,35 +26,78 @@
#include <stdlib.h>
#include <string.h>
-#if defined HAVE_LANGINFO_H || defined HAVE_LANGINFO_CODESET || defined _LIBC
-# include <langinfo.h>
-#endif
-#if defined HAVE_LOCALE_H || defined _LIBC
-# include <locale.h>
+#include <langinfo.h>
+#include <locale.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+/* Properties of integers. Although Gnulib has intprops.h, glibc does
+ without for now. */
+#ifndef _LIBC
+# include "intprops.h"
+#else
+/* True if the real type T is signed. */
+# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* True if adding the nonnegative Idx values A and B would overflow.
+ If false, set *R to A + B. A, B, and R may be evaluated more than
+ once, or zero times. Although this is not a full implementation of
+ Gnulib INT_ADD_WRAPV, it is good enough for glibc regex code.
+ FIXME: This implementation is a fragile stopgap, and this file would
+ be simpler and more robust if intprops.h were migrated into glibc. */
+# define INT_ADD_WRAPV(a, b, r) \
+ (IDX_MAX - (a) < (b) ? true : (*(r) = (a) + (b), false))
#endif
-#if defined HAVE_WCHAR_H || defined _LIBC
-# include <wchar.h>
-#endif /* HAVE_WCHAR_H || _LIBC */
-#if defined HAVE_WCTYPE_H || defined _LIBC
-# include <wctype.h>
-#endif /* HAVE_WCTYPE_H || _LIBC */
-#if defined HAVE_STDBOOL_H || defined _LIBC
-# include <stdbool.h>
-#endif /* HAVE_STDBOOL_H || _LIBC */
-#if defined HAVE_STDINT_H || defined _LIBC
-# include <stdint.h>
-#endif /* HAVE_STDINT_H || _LIBC */
-#if defined _LIBC
+
+#ifdef _LIBC
# include <libc-lock.h>
+# define lock_define(name) __libc_lock_define (, name)
+# define lock_init(lock) (__libc_lock_init (lock), 0)
+# define lock_fini(lock) ((void) 0)
+# define lock_lock(lock) __libc_lock_lock (lock)
+# define lock_unlock(lock) __libc_lock_unlock (lock)
+#elif defined GNULIB_LOCK && !defined USE_UNLOCKED_IO
+# include "glthread/lock.h"
+ /* Use gl_lock_define if empty macro arguments are known to work.
+ Otherwise, fall back on less-portable substitutes. */
+# if ((defined __GNUC__ && !defined __STRICT_ANSI__) \
+ || (defined __STDC_VERSION__ && 199901L <= __STDC_VERSION__))
+# define lock_define(name) gl_lock_define (, name)
+# elif USE_POSIX_THREADS
+# define lock_define(name) pthread_mutex_t name;
+# elif USE_PTH_THREADS
+# define lock_define(name) pth_mutex_t name;
+# elif USE_SOLARIS_THREADS
+# define lock_define(name) mutex_t name;
+# elif USE_WINDOWS_THREADS
+# define lock_define(name) gl_lock_t name;
+# else
+# define lock_define(name)
+# endif
+# define lock_init(lock) glthread_lock_init (&(lock))
+# define lock_fini(lock) glthread_lock_destroy (&(lock))
+# define lock_lock(lock) glthread_lock_lock (&(lock))
+# define lock_unlock(lock) glthread_lock_unlock (&(lock))
+#elif defined GNULIB_PTHREAD && !defined USE_UNLOCKED_IO
+# include <pthread.h>
+# define lock_define(name) pthread_mutex_t name;
+# define lock_init(lock) pthread_mutex_init (&(lock), 0)
+# define lock_fini(lock) pthread_mutex_destroy (&(lock))
+# define lock_lock(lock) pthread_mutex_lock (&(lock))
+# define lock_unlock(lock) pthread_mutex_unlock (&(lock))
#else
-# define __libc_lock_define(CLASS,NAME)
-# define __libc_lock_init(NAME) do { } while (0)
-# define __libc_lock_lock(NAME) do { } while (0)
-# define __libc_lock_unlock(NAME) do { } while (0)
+# define lock_define(name)
+# define lock_init(lock) 0
+# define lock_fini(lock) ((void) 0)
+ /* The 'dfa' avoids an "unused variable 'dfa'" warning from GCC. */
+# define lock_lock(lock) ((void) dfa)
+# define lock_unlock(lock) ((void) 0)
#endif
/* In case that the system doesn't have isblank(). */
-#if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank
+#if !defined _LIBC && ! (defined isblank || (HAVE_ISBLANK && HAVE_DECL_ISBLANK))
# define isblank(ch) ((ch) == ' ' || (ch) == '\t')
#endif
@@ -75,6 +118,7 @@
__dcgettext (_libc_intl_domainname, msgid, LC_MESSAGES)
# endif
#else
+# undef gettext
# define gettext(msgid) (msgid)
#endif
@@ -84,23 +128,17 @@
# define gettext_noop(String) String
#endif
-/* For loser systems without the definition. */
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
#if (defined MB_CUR_MAX && HAVE_WCTYPE_H && HAVE_ISWCTYPE) || _LIBC
# define RE_ENABLE_I18N
#endif
-#if __GNUC__ >= 3
-# define BE(expr, val) __builtin_expect (expr, val)
-#else
-# define BE(expr, val) (expr)
-#endif
+#define BE(expr, val) __builtin_expect (expr, val)
-/* Number of single byte character. */
-#define SBC_MAX 256
+/* Number of ASCII characters. */
+#define ASCII_CHARS 0x80
+
+/* Number of single byte characters. */
+#define SBC_MAX (UCHAR_MAX + 1)
#define COLL_ELEM_LEN_MAX 8
@@ -110,11 +148,15 @@
/* Rename to standard API for using out of glibc. */
#ifndef _LIBC
+# undef __wctype
+# undef __iswctype
# define __wctype wctype
+# define __iswalnum iswalnum
# define __iswctype iswctype
+# define __towlower towlower
+# define __towupper towupper
# define __btowc btowc
# define __mbrtowc mbrtowc
-# define __mempcpy mempcpy
# define __wcrtomb wcrtomb
# define __regfree regfree
# define attribute_hidden
@@ -124,32 +166,70 @@
# define __attribute__(arg)
#endif
-extern const char __re_error_msgid[] attribute_hidden;
-extern const size_t __re_error_msgid_idx[] attribute_hidden;
+#ifndef SSIZE_MAX
+# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
+#endif
+
+/* The type of indexes into strings. This is signed, not size_t,
+ since the API requires indexes to fit in regoff_t anyway, and using
+ signed integers makes the code a bit smaller and presumably faster.
+ The traditional GNU regex implementation uses int for indexes.
+ The POSIX-compatible implementation uses a possibly-wider type.
+ The name 'Idx' is three letters to minimize the hassle of
+ reindenting a lot of regex code that formerly used 'int'. */
+typedef regoff_t Idx;
+#ifdef _REGEX_LARGE_OFFSETS
+# define IDX_MAX SSIZE_MAX
+#else
+# define IDX_MAX INT_MAX
+#endif
+
+/* A hash value, suitable for computing hash tables. */
+typedef __re_size_t re_hashval_t;
/* An integer used to represent a set of bits. It must be unsigned,
and must be at least as wide as unsigned int. */
typedef unsigned long int bitset_word_t;
/* All bits set in a bitset_word_t. */
#define BITSET_WORD_MAX ULONG_MAX
-/* Number of bits in a bitset_word_t. */
-#define BITSET_WORD_BITS (sizeof (bitset_word_t) * CHAR_BIT)
-/* Number of bitset_word_t in a bit_set. */
-#define BITSET_WORDS (SBC_MAX / BITSET_WORD_BITS)
+
+/* Number of bits in a bitset_word_t. For portability to hosts with
+ padding bits, do not use '(sizeof (bitset_word_t) * CHAR_BIT)';
+ instead, deduce it directly from BITSET_WORD_MAX. Avoid
+ greater-than-32-bit integers and unconditional shifts by more than
+ 31 bits, as they're not portable. */
+#if BITSET_WORD_MAX == 0xffffffffUL
+# define BITSET_WORD_BITS 32
+#elif BITSET_WORD_MAX >> 31 >> 4 == 1
+# define BITSET_WORD_BITS 36
+#elif BITSET_WORD_MAX >> 31 >> 16 == 1
+# define BITSET_WORD_BITS 48
+#elif BITSET_WORD_MAX >> 31 >> 28 == 1
+# define BITSET_WORD_BITS 60
+#elif BITSET_WORD_MAX >> 31 >> 31 >> 1 == 1
+# define BITSET_WORD_BITS 64
+#elif BITSET_WORD_MAX >> 31 >> 31 >> 9 == 1
+# define BITSET_WORD_BITS 72
+#elif BITSET_WORD_MAX >> 31 >> 31 >> 31 >> 31 >> 3 == 1
+# define BITSET_WORD_BITS 128
+#elif BITSET_WORD_MAX >> 31 >> 31 >> 31 >> 31 >> 31 >> 31 >> 31 >> 31 >> 7 == 1
+# define BITSET_WORD_BITS 256
+#elif BITSET_WORD_MAX >> 31 >> 31 >> 31 >> 31 >> 31 >> 31 >> 31 >> 31 >> 7 > 1
+# define BITSET_WORD_BITS 257 /* any value > SBC_MAX will do here */
+# if BITSET_WORD_BITS <= SBC_MAX
+# error "Invalid SBC_MAX"
+# endif
+#else
+# error "Add case for new bitset_word_t size"
+#endif
+
+/* Number of bitset_word_t values in a bitset_t. */
+#define BITSET_WORDS ((SBC_MAX + BITSET_WORD_BITS - 1) / BITSET_WORD_BITS)
+
typedef bitset_word_t bitset_t[BITSET_WORDS];
typedef bitset_word_t *re_bitset_ptr_t;
typedef const bitset_word_t *re_const_bitset_ptr_t;
-#define bitset_set(set,i) \
- (set[i / BITSET_WORD_BITS] |= (bitset_word_t) 1 << i % BITSET_WORD_BITS)
-#define bitset_clear(set,i) \
- (set[i / BITSET_WORD_BITS] &= ~((bitset_word_t) 1 << i % BITSET_WORD_BITS))
-#define bitset_contain(set,i) \
- (set[i / BITSET_WORD_BITS] & ((bitset_word_t) 1 << i % BITSET_WORD_BITS))
-#define bitset_empty(set) memset (set, '\0', sizeof (bitset_t))
-#define bitset_set_all(set) memset (set, '\xff', sizeof (bitset_t))
-#define bitset_copy(dest,src) memcpy (dest, src, sizeof (bitset_t))
-
#define PREV_WORD_CONSTRAINT 0x0001
#define PREV_NOTWORD_CONSTRAINT 0x0002
#define NEXT_WORD_CONSTRAINT 0x0004
@@ -177,9 +257,9 @@ typedef enum
typedef struct
{
- int alloc;
- int nelem;
- int *elems;
+ Idx alloc;
+ Idx nelem;
+ Idx *elems;
} re_node_set;
typedef enum
@@ -265,19 +345,19 @@ typedef struct
unsigned int non_match : 1;
/* # of multibyte characters. */
- int nmbchars;
+ Idx nmbchars;
/* # of collating symbols. */
- int ncoll_syms;
+ Idx ncoll_syms;
/* # of equivalence classes. */
- int nequiv_classes;
+ Idx nequiv_classes;
/* # of range expressions. */
- int nranges;
+ Idx nranges;
/* # of character classes. */
- int nchar_classes;
+ Idx nchar_classes;
} re_charset_t;
#endif /* RE_ENABLE_I18N */
@@ -290,10 +370,10 @@ typedef struct
#ifdef RE_ENABLE_I18N
re_charset_t *mbcset; /* for COMPLEX_BRACKET */
#endif /* RE_ENABLE_I18N */
- int idx; /* for BACK_REF */
+ Idx idx; /* for BACK_REF */
re_context_type ctx_type; /* for ANCHOR */
} opr;
-#if __GNUC__ >= 2
+#if __GNUC__ >= 2 && !defined __STRICT_ANSI__
re_token_type_t type : 8;
#else
re_token_type_t type;
@@ -324,30 +404,30 @@ struct re_string_t
#ifdef RE_ENABLE_I18N
/* Store the wide character string which is corresponding to MBS. */
wint_t *wcs;
- int *offsets;
+ Idx *offsets;
mbstate_t cur_state;
#endif
/* Index in RAW_MBS. Each character mbs[i] corresponds to
raw_mbs[raw_mbs_idx + i]. */
- int raw_mbs_idx;
+ Idx raw_mbs_idx;
/* The length of the valid characters in the buffers. */
- int valid_len;
+ Idx valid_len;
/* The corresponding number of bytes in raw_mbs array. */
- int valid_raw_len;
+ Idx valid_raw_len;
/* The length of the buffers MBS and WCS. */
- int bufs_len;
+ Idx bufs_len;
/* The index in MBS, which is updated by re_string_fetch_byte. */
- int cur_idx;
+ Idx cur_idx;
/* length of RAW_MBS array. */
- int raw_len;
+ Idx raw_len;
/* This is RAW_LEN - RAW_MBS_IDX + VALID_LEN - VALID_RAW_LEN. */
- int len;
+ Idx len;
/* End of the buffer may be shorter than its length in the cases such
as re_match_2, re_search_2. Then, we use STOP for end of the buffer
instead of LEN. */
- int raw_stop;
+ Idx raw_stop;
/* This is RAW_STOP - RAW_MBS_IDX adjusted through OFFSETS. */
- int stop;
+ Idx stop;
/* The context of mbs[0]. We store the context independently, since
the context of mbs[0] may be different from raw_mbs[0], which is
@@ -357,7 +437,7 @@ struct re_string_t
RE_TRANSLATE_TYPE trans;
/* Copy of re_dfa_t's word_char. */
re_const_bitset_ptr_t word_char;
- /* 1 if REG_ICASE. */
+ /* true if REG_ICASE. */
unsigned char icase;
unsigned char is_utf8;
unsigned char map_notascii;
@@ -373,18 +453,10 @@ typedef struct re_string_t re_string_t;
struct re_dfa_t;
typedef struct re_dfa_t re_dfa_t;
-#if IS_IN (libc)
-static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
- int new_buf_len);
-# ifdef RE_ENABLE_I18N
-static void build_wcs_buffer (re_string_t *pstr);
-static reg_errcode_t build_wcs_upper_buffer (re_string_t *pstr);
-# endif /* RE_ENABLE_I18N */
-static void build_upper_buffer (re_string_t *pstr);
-static void re_string_translate_buffer (re_string_t *pstr);
-static unsigned int re_string_context_at (const re_string_t *input, int idx,
- int eflags) __attribute__ ((pure));
+#ifndef _LIBC
+# define IS_IN(libc) false
#endif
+
#define re_string_peek_byte(pstr, offset) \
((pstr)->mbs[(pstr)->cur_idx + offset])
#define re_string_fetch_byte(pstr) \
@@ -402,7 +474,9 @@ static unsigned int re_string_context_at (const re_string_t *input, int idx,
#define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
#define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
-#include <alloca.h>
+#if defined _LIBC || HAVE_ALLOCA
+# include <alloca.h>
+#endif
#ifndef _LIBC
# if HAVE_ALLOCA
@@ -414,9 +488,24 @@ static unsigned int re_string_context_at (const re_string_t *input, int idx,
# else
/* alloca is implemented with malloc, so just use malloc. */
# define __libc_use_alloca(n) 0
+# undef alloca
+# define alloca(n) malloc (n)
# endif
#endif
+#ifdef _LIBC
+# define MALLOC_0_IS_NONNULL 1
+#elif !defined MALLOC_0_IS_NONNULL
+# define MALLOC_0_IS_NONNULL 0
+#endif
+
+#ifndef MAX
+# define MAX(a,b) ((a) < (b) ? (b) : (a))
+#endif
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
#define re_malloc(t,n) ((t *) malloc ((n) * sizeof (t)))
#define re_realloc(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
#define re_free(p) free (p)
@@ -431,9 +520,9 @@ struct bin_tree_t
re_token_t token;
- /* `node_idx' is the index in dfa->nodes, if `type' == 0.
- Otherwise `type' indicate the type of this node. */
- int node_idx;
+ /* 'node_idx' is the index in dfa->nodes, if 'type' == 0.
+ Otherwise 'type' indicate the type of this node. */
+ Idx node_idx;
};
typedef struct bin_tree_t bin_tree_t;
@@ -477,7 +566,7 @@ typedef struct bin_tree_storage_t bin_tree_storage_t;
struct re_dfastate_t
{
- unsigned int hash;
+ re_hashval_t hash;
re_node_set nodes;
re_node_set non_eps_nodes;
re_node_set inveclosure;
@@ -485,9 +574,9 @@ struct re_dfastate_t
struct re_dfastate_t **trtable, **word_trtable;
unsigned int context : 4;
unsigned int halt : 1;
- /* If this state can accept `multi byte'.
+ /* If this state can accept "multi byte".
Note that we refer to multibyte characters, and multi character
- collating elements as `multi byte'. */
+ collating elements as "multi byte". */
unsigned int accept_mb : 1;
/* If this state has backreference node(s). */
unsigned int has_backref : 1;
@@ -497,8 +586,8 @@ typedef struct re_dfastate_t re_dfastate_t;
struct re_state_table_entry
{
- int num;
- int alloc;
+ Idx num;
+ Idx alloc;
re_dfastate_t **array;
};
@@ -506,8 +595,8 @@ struct re_state_table_entry
typedef struct
{
- int next_idx;
- int alloc;
+ Idx next_idx;
+ Idx alloc;
re_dfastate_t **array;
} state_array_t;
@@ -515,8 +604,8 @@ typedef struct
typedef struct
{
- int node;
- int str_idx; /* The position NODE match at. */
+ Idx node;
+ Idx str_idx; /* The position NODE match at. */
state_array_t path;
} re_sub_match_last_t;
@@ -526,20 +615,20 @@ typedef struct
typedef struct
{
- int str_idx;
- int node;
+ Idx str_idx;
+ Idx node;
state_array_t *path;
- int alasts; /* Allocation size of LASTS. */
- int nlasts; /* The number of LASTS. */
+ Idx alasts; /* Allocation size of LASTS. */
+ Idx nlasts; /* The number of LASTS. */
re_sub_match_last_t **lasts;
} re_sub_match_top_t;
struct re_backref_cache_entry
{
- int node;
- int str_idx;
- int subexp_from;
- int subexp_to;
+ Idx node;
+ Idx str_idx;
+ Idx subexp_from;
+ Idx subexp_to;
char more;
char unused;
unsigned short int eps_reachable_subexps_map;
@@ -557,18 +646,18 @@ typedef struct
/* EFLAGS of the argument of regexec. */
int eflags;
/* Where the matching ends. */
- int match_last;
- int last_node;
+ Idx match_last;
+ Idx last_node;
/* The state log used by the matcher. */
re_dfastate_t **state_log;
- int state_log_top;
+ Idx state_log_top;
/* Back reference cache. */
- int nbkref_ents;
- int abkref_ents;
+ Idx nbkref_ents;
+ Idx abkref_ents;
struct re_backref_cache_entry *bkref_ents;
int max_mb_elem_len;
- int nsub_tops;
- int asub_tops;
+ Idx nsub_tops;
+ Idx asub_tops;
re_sub_match_top_t **sub_tops;
} re_match_context_t;
@@ -576,23 +665,23 @@ typedef struct
{
re_dfastate_t **sifted_states;
re_dfastate_t **limited_states;
- int last_node;
- int last_str_idx;
+ Idx last_node;
+ Idx last_str_idx;
re_node_set limits;
} re_sift_context_t;
struct re_fail_stack_ent_t
{
- int idx;
- int node;
+ Idx idx;
+ Idx node;
regmatch_t *regs;
re_node_set eps_via_nodes;
};
struct re_fail_stack_t
{
- int num;
- int alloc;
+ Idx num;
+ Idx alloc;
struct re_fail_stack_ent_t *stack;
};
@@ -601,8 +690,8 @@ struct re_dfa_t
re_token_t *nodes;
size_t nodes_alloc;
size_t nodes_len;
- int *nexts;
- int *org_indices;
+ Idx *nexts;
+ Idx *org_indices;
re_node_set *edests;
re_node_set *eclosures;
re_node_set *inveclosures;
@@ -616,10 +705,10 @@ struct re_dfa_t
re_bitset_ptr_t sb_char;
int str_tree_storage_idx;
- /* number of subexpressions `re_nsub' is in regex_t. */
- unsigned int state_hash_mask;
- int init_node;
- int nbackref; /* The number of backreference in this dfa. */
+ /* number of subexpressions 're_nsub' is in regex_t. */
+ re_hashval_t state_hash_mask;
+ Idx init_node;
+ Idx nbackref; /* The number of backreference in this dfa. */
/* Bitmap expressing which backreference is used. */
bitset_word_t used_bkref_map;
@@ -636,11 +725,11 @@ struct re_dfa_t
int mb_cur_max;
bitset_t word_char;
reg_syntax_t syntax;
- int *subexp_map;
+ Idx *subexp_map;
#ifdef DEBUG
char* re_str;
#endif
- __libc_lock_define (, lock)
+ lock_define (lock)
};
#define re_node_set_init_empty(set) memset (set, '\0', sizeof (re_node_set))
@@ -671,16 +760,60 @@ typedef struct
} bracket_elem_t;
-/* Inline functions for bitset operation. */
-static void __attribute__ ((unused))
+/* Functions for bitset_t operation. */
+
+static inline void
+bitset_set (bitset_t set, Idx i)
+{
+ set[i / BITSET_WORD_BITS] |= (bitset_word_t) 1 << i % BITSET_WORD_BITS;
+}
+
+static inline void
+bitset_clear (bitset_t set, Idx i)
+{
+ set[i / BITSET_WORD_BITS] &= ~ ((bitset_word_t) 1 << i % BITSET_WORD_BITS);
+}
+
+static inline bool
+bitset_contain (const bitset_t set, Idx i)
+{
+ return (set[i / BITSET_WORD_BITS] >> i % BITSET_WORD_BITS) & 1;
+}
+
+static inline void
+bitset_empty (bitset_t set)
+{
+ memset (set, '\0', sizeof (bitset_t));
+}
+
+static inline void
+bitset_set_all (bitset_t set)
+{
+ memset (set, -1, sizeof (bitset_word_t) * (SBC_MAX / BITSET_WORD_BITS));
+ if (SBC_MAX % BITSET_WORD_BITS != 0)
+ set[BITSET_WORDS - 1] =
+ ((bitset_word_t) 1 << SBC_MAX % BITSET_WORD_BITS) - 1;
+}
+
+static inline void
+bitset_copy (bitset_t dest, const bitset_t src)
+{
+ memcpy (dest, src, sizeof (bitset_t));
+}
+
+static inline void
bitset_not (bitset_t set)
{
int bitset_i;
- for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
+ for (bitset_i = 0; bitset_i < SBC_MAX / BITSET_WORD_BITS; ++bitset_i)
set[bitset_i] = ~set[bitset_i];
+ if (SBC_MAX % BITSET_WORD_BITS != 0)
+ set[BITSET_WORDS - 1] =
+ ((((bitset_word_t) 1 << SBC_MAX % BITSET_WORD_BITS) - 1)
+ & ~set[BITSET_WORDS - 1]);
}
-static void __attribute__ ((unused))
+static inline void
bitset_merge (bitset_t dest, const bitset_t src)
{
int bitset_i;
@@ -688,7 +821,7 @@ bitset_merge (bitset_t dest, const bitset_t src)
dest[bitset_i] |= src[bitset_i];
}
-static void __attribute__ ((unused))
+static inline void
bitset_mask (bitset_t dest, const bitset_t src)
{
int bitset_i;
@@ -697,10 +830,10 @@ bitset_mask (bitset_t dest, const bitset_t src)
}
#ifdef RE_ENABLE_I18N
-/* Inline functions for re_string. */
+/* Functions for re_string. */
static int
__attribute__ ((pure, unused))
-re_string_char_size_at (const re_string_t *pstr, int idx)
+re_string_char_size_at (const re_string_t *pstr, Idx idx)
{
int byte_idx;
if (pstr->mb_cur_max == 1)
@@ -713,23 +846,22 @@ re_string_char_size_at (const re_string_t *pstr, int idx)
static wint_t
__attribute__ ((pure, unused))
-re_string_wchar_at (const re_string_t *pstr, int idx)
+re_string_wchar_at (const re_string_t *pstr, Idx idx)
{
if (pstr->mb_cur_max == 1)
return (wint_t) pstr->mbs[idx];
return (wint_t) pstr->wcs[idx];
}
-# if IS_IN (libc)
-# ifdef _LIBC
-# include <locale/weight.h>
-# endif
+# ifdef _LIBC
+# include <locale/weight.h>
+# endif
static int
__attribute__ ((pure, unused))
-re_string_elem_size_at (const re_string_t *pstr, int idx)
+re_string_elem_size_at (const re_string_t *pstr, Idx idx)
{
-# ifdef _LIBC
+# ifdef _LIBC
const unsigned char *p, *extra;
const int32_t *table, *indirect;
uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
@@ -746,10 +878,34 @@ re_string_elem_size_at (const re_string_t *pstr, int idx)
return p - pstr->mbs - idx;
}
else
-# endif /* _LIBC */
+# endif /* _LIBC */
return 1;
}
-# endif
#endif /* RE_ENABLE_I18N */
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_MINOR__
+# define __GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+# define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#if __GNUC_PREREQ (3,4)
+# undef __attribute_warn_unused_result__
+# define __attribute_warn_unused_result__ \
+ __attribute__ ((__warn_unused_result__))
+#else
+# define __attribute_warn_unused_result__ /* empty */
+#endif
+
+#ifndef FALLTHROUGH
+# if __GNUC__ < 7
+# define FALLTHROUGH ((void) 0)
+# else
+# define FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+#endif
+
#endif /* _REGEX_INTERNAL_H */
diff --git a/posix/regexec.c b/posix/regexec.c
index 4b1ab4ecff..63aef97535 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -15,100 +15,98 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <stdint.h>
+ <https://www.gnu.org/licenses/>. */
static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
- int n);
+ Idx n);
static void match_ctx_clean (re_match_context_t *mctx);
static void match_ctx_free (re_match_context_t *cache);
-static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, int node,
- int str_idx, int from, int to);
-static int search_cur_bkref_entry (const re_match_context_t *mctx,
- int str_idx);
-static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, int node,
- int str_idx);
+static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, Idx node,
+ Idx str_idx, Idx from, Idx to);
+static Idx search_cur_bkref_entry (const re_match_context_t *mctx, Idx str_idx);
+static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, Idx node,
+ Idx str_idx);
static re_sub_match_last_t * match_ctx_add_sublast (re_sub_match_top_t *subtop,
- int node, int str_idx);
+ Idx node, Idx str_idx);
static void sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
- re_dfastate_t **limited_sts, int last_node,
- int last_str_idx);
+ re_dfastate_t **limited_sts, Idx last_node,
+ Idx last_str_idx);
static reg_errcode_t re_search_internal (const regex_t *preg,
- const char *string, int length,
- int start, int range, int stop,
+ const char *string, Idx length,
+ Idx start, Idx last_start, Idx stop,
size_t nmatch, regmatch_t pmatch[],
int eflags);
-static int re_search_2_stub (struct re_pattern_buffer *bufp,
- const char *string1, int length1,
- const char *string2, int length2,
- int start, int range, struct re_registers *regs,
- int stop, int ret_len);
-static int re_search_stub (struct re_pattern_buffer *bufp,
- const char *string, int length, int start,
- int range, int stop, struct re_registers *regs,
- int ret_len);
+static regoff_t re_search_2_stub (struct re_pattern_buffer *bufp,
+ const char *string1, Idx length1,
+ const char *string2, Idx length2,
+ Idx start, regoff_t range,
+ struct re_registers *regs,
+ Idx stop, bool ret_len);
+static regoff_t re_search_stub (struct re_pattern_buffer *bufp,
+ const char *string, Idx length, Idx start,
+ regoff_t range, Idx stop,
+ struct re_registers *regs,
+ bool ret_len);
static unsigned re_copy_regs (struct re_registers *regs, regmatch_t *pmatch,
- int nregs, int regs_allocated);
+ Idx nregs, int regs_allocated);
static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx);
-static int check_matching (re_match_context_t *mctx, int fl_longest_match,
- int *p_match_first);
-static int check_halt_state_context (const re_match_context_t *mctx,
- const re_dfastate_t *state, int idx);
+static Idx check_matching (re_match_context_t *mctx, bool fl_longest_match,
+ Idx *p_match_first);
+static Idx check_halt_state_context (const re_match_context_t *mctx,
+ const re_dfastate_t *state, Idx idx);
static void update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
- regmatch_t *prev_idx_match, int cur_node,
- int cur_idx, int nmatch);
+ regmatch_t *prev_idx_match, Idx cur_node,
+ Idx cur_idx, Idx nmatch);
static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
- int str_idx, int dest_node, int nregs,
+ Idx str_idx, Idx dest_node, Idx nregs,
regmatch_t *regs,
re_node_set *eps_via_nodes);
static reg_errcode_t set_regs (const regex_t *preg,
const re_match_context_t *mctx,
size_t nmatch, regmatch_t *pmatch,
- int fl_backtrack);
+ bool fl_backtrack);
static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs);
#ifdef RE_ENABLE_I18N
static int sift_states_iter_mb (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int node_idx, int str_idx, int max_str_idx);
+ Idx node_idx, Idx str_idx, Idx max_str_idx);
#endif /* RE_ENABLE_I18N */
static reg_errcode_t sift_states_backward (const re_match_context_t *mctx,
re_sift_context_t *sctx);
static reg_errcode_t build_sifted_states (const re_match_context_t *mctx,
- re_sift_context_t *sctx, int str_idx,
+ re_sift_context_t *sctx, Idx str_idx,
re_node_set *cur_dest);
static reg_errcode_t update_cur_sifted_state (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int str_idx,
+ Idx str_idx,
re_node_set *dest_nodes);
static reg_errcode_t add_epsilon_src_nodes (const re_dfa_t *dfa,
re_node_set *dest_nodes,
const re_node_set *candidates);
-static int check_dst_limits (const re_match_context_t *mctx,
- re_node_set *limits,
- int dst_node, int dst_idx, int src_node,
- int src_idx);
+static bool check_dst_limits (const re_match_context_t *mctx,
+ const re_node_set *limits,
+ Idx dst_node, Idx dst_idx, Idx src_node,
+ Idx src_idx);
static int check_dst_limits_calc_pos_1 (const re_match_context_t *mctx,
- int boundaries, int subexp_idx,
- int from_node, int bkref_idx);
+ int boundaries, Idx subexp_idx,
+ Idx from_node, Idx bkref_idx);
static int check_dst_limits_calc_pos (const re_match_context_t *mctx,
- int limit, int subexp_idx,
- int node, int str_idx,
- int bkref_idx);
+ Idx limit, Idx subexp_idx,
+ Idx node, Idx str_idx,
+ Idx bkref_idx);
static reg_errcode_t check_subexp_limits (const re_dfa_t *dfa,
re_node_set *dest_nodes,
const re_node_set *candidates,
re_node_set *limits,
struct re_backref_cache_entry *bkref_ents,
- int str_idx);
+ Idx str_idx);
static reg_errcode_t sift_states_bkref (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int str_idx,
- const re_node_set *candidates);
+ Idx str_idx, const re_node_set *candidates);
static reg_errcode_t merge_state_array (const re_dfa_t *dfa,
re_dfastate_t **dst,
- re_dfastate_t **src, int num);
+ re_dfastate_t **src, Idx num);
static re_dfastate_t *find_recover_state (reg_errcode_t *err,
re_match_context_t *mctx);
static re_dfastate_t *transit_state (reg_errcode_t *err,
@@ -119,7 +117,7 @@ static re_dfastate_t *merge_state_with_log (reg_errcode_t *err,
re_dfastate_t *next_state);
static reg_errcode_t check_subexp_matching_top (re_match_context_t *mctx,
re_node_set *cur_nodes,
- int str_idx);
+ Idx str_idx);
#if 0
static re_dfastate_t *transit_state_sb (reg_errcode_t *err,
re_match_context_t *mctx,
@@ -132,46 +130,46 @@ static reg_errcode_t transit_state_mb (re_match_context_t *mctx,
static reg_errcode_t transit_state_bkref (re_match_context_t *mctx,
const re_node_set *nodes);
static reg_errcode_t get_subexp (re_match_context_t *mctx,
- int bkref_node, int bkref_str_idx);
+ Idx bkref_node, Idx bkref_str_idx);
static reg_errcode_t get_subexp_sub (re_match_context_t *mctx,
const re_sub_match_top_t *sub_top,
re_sub_match_last_t *sub_last,
- int bkref_node, int bkref_str);
-static int find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
- int subexp_idx, int type);
+ Idx bkref_node, Idx bkref_str);
+static Idx find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
+ Idx subexp_idx, int type);
static reg_errcode_t check_arrival (re_match_context_t *mctx,
- state_array_t *path, int top_node,
- int top_str, int last_node, int last_str,
+ state_array_t *path, Idx top_node,
+ Idx top_str, Idx last_node, Idx last_str,
int type);
static reg_errcode_t check_arrival_add_next_nodes (re_match_context_t *mctx,
- int str_idx,
+ Idx str_idx,
re_node_set *cur_nodes,
re_node_set *next_nodes);
static reg_errcode_t check_arrival_expand_ecl (const re_dfa_t *dfa,
re_node_set *cur_nodes,
- int ex_subexp, int type);
+ Idx ex_subexp, int type);
static reg_errcode_t check_arrival_expand_ecl_sub (const re_dfa_t *dfa,
re_node_set *dst_nodes,
- int target, int ex_subexp,
+ Idx target, Idx ex_subexp,
int type);
static reg_errcode_t expand_bkref_cache (re_match_context_t *mctx,
- re_node_set *cur_nodes, int cur_str,
- int subexp_num, int type);
-static int build_trtable (const re_dfa_t *dfa, re_dfastate_t *state);
+ re_node_set *cur_nodes, Idx cur_str,
+ Idx subexp_num, int type);
+static bool build_trtable (const re_dfa_t *dfa, re_dfastate_t *state);
#ifdef RE_ENABLE_I18N
-static int check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
- const re_string_t *input, int idx);
+static int check_node_accept_bytes (const re_dfa_t *dfa, Idx node_idx,
+ const re_string_t *input, Idx idx);
# ifdef _LIBC
static unsigned int find_collation_sequence_value (const unsigned char *mbs,
size_t name_len);
# endif /* _LIBC */
#endif /* RE_ENABLE_I18N */
-static int group_nodes_into_DFAstates (const re_dfa_t *dfa,
+static Idx group_nodes_into_DFAstates (const re_dfa_t *dfa,
const re_dfastate_t *state,
re_node_set *states_node,
bitset_t *states_ch);
-static int check_node_accept (const re_match_context_t *mctx,
- const re_token_t *node, int idx);
+static bool check_node_accept (const re_match_context_t *mctx,
+ const re_token_t *node, Idx idx);
static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len);
/* Entry point for POSIX code. */
@@ -180,23 +178,23 @@ static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len);
string STRING.
If NMATCH is zero or REG_NOSUB was set in the cflags argument to
- `regcomp', we ignore PMATCH. Otherwise, we assume PMATCH has at
+ 'regcomp', we ignore PMATCH. Otherwise, we assume PMATCH has at
least NMATCH elements, and we set them to the offsets of the
corresponding matched substrings.
- EFLAGS specifies `execution flags' which affect matching: if
+ EFLAGS specifies "execution flags" which affect matching: if
REG_NOTBOL is set, then ^ does not match at the beginning of the
string; if REG_NOTEOL is set, then $ does not match at the end.
We return 0 if we find a match and REG_NOMATCH if not. */
int
-regexec (const regex_t *__restrict preg, const char *__restrict string,
+regexec (const regex_t *_Restrict_ preg, const char *_Restrict_ string,
size_t nmatch, regmatch_t pmatch[], int eflags)
{
reg_errcode_t err;
- int start, length;
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+ Idx start, length;
+ re_dfa_t *dfa = preg->buffer;
if (eflags & ~(REG_NOTBOL | REG_NOTEOL | REG_STARTEND))
return REG_BADPAT;
@@ -212,14 +210,14 @@ regexec (const regex_t *__restrict preg, const char *__restrict string,
length = strlen (string);
}
- __libc_lock_lock (dfa->lock);
+ lock_lock (dfa->lock);
if (preg->no_sub)
- err = re_search_internal (preg, string, length, start, length - start,
+ err = re_search_internal (preg, string, length, start, length,
length, 0, NULL, eflags);
else
- err = re_search_internal (preg, string, length, start, length - start,
+ err = re_search_internal (preg, string, length, start, length,
length, nmatch, pmatch, eflags);
- __libc_lock_unlock (dfa->lock);
+ lock_unlock (dfa->lock);
return err != REG_NOERROR;
}
@@ -234,8 +232,8 @@ __typeof__ (__regexec) __compat_regexec;
int
attribute_compat_text_section
-__compat_regexec (const regex_t *__restrict preg,
- const char *__restrict string, size_t nmatch,
+__compat_regexec (const regex_t *_Restrict_ preg,
+ const char *_Restrict_ string, size_t nmatch,
regmatch_t pmatch[], int eflags)
{
return regexec (preg, string, nmatch, pmatch,
@@ -274,62 +272,65 @@ compat_symbol (libc, __compat_regexec, regexec, GLIBC_2_0);
return the position of the start of the match. Return value -1 means no
match was found and -2 indicates an internal error. */
-int
-re_match (struct re_pattern_buffer *bufp, const char *string, int length,
- int start, struct re_registers *regs)
+regoff_t
+re_match (struct re_pattern_buffer *bufp, const char *string, Idx length,
+ Idx start, struct re_registers *regs)
{
- return re_search_stub (bufp, string, length, start, 0, length, regs, 1);
+ return re_search_stub (bufp, string, length, start, 0, length, regs, true);
}
#ifdef _LIBC
weak_alias (__re_match, re_match)
#endif
-int
-re_search (struct re_pattern_buffer *bufp, const char *string, int length,
- int start, int range, struct re_registers *regs)
+regoff_t
+re_search (struct re_pattern_buffer *bufp, const char *string, Idx length,
+ Idx start, regoff_t range, struct re_registers *regs)
{
- return re_search_stub (bufp, string, length, start, range, length, regs, 0);
+ return re_search_stub (bufp, string, length, start, range, length, regs,
+ false);
}
#ifdef _LIBC
weak_alias (__re_search, re_search)
#endif
-int
-re_match_2 (struct re_pattern_buffer *bufp, const char *string1, int length1,
- const char *string2, int length2, int start,
- struct re_registers *regs, int stop)
+regoff_t
+re_match_2 (struct re_pattern_buffer *bufp, const char *string1, Idx length1,
+ const char *string2, Idx length2, Idx start,
+ struct re_registers *regs, Idx stop)
{
return re_search_2_stub (bufp, string1, length1, string2, length2,
- start, 0, regs, stop, 1);
+ start, 0, regs, stop, true);
}
#ifdef _LIBC
weak_alias (__re_match_2, re_match_2)
#endif
-int
-re_search_2 (struct re_pattern_buffer *bufp, const char *string1, int length1,
- const char *string2, int length2, int start, int range,
- struct re_registers *regs, int stop)
+regoff_t
+re_search_2 (struct re_pattern_buffer *bufp, const char *string1, Idx length1,
+ const char *string2, Idx length2, Idx start, regoff_t range,
+ struct re_registers *regs, Idx stop)
{
return re_search_2_stub (bufp, string1, length1, string2, length2,
- start, range, regs, stop, 0);
+ start, range, regs, stop, false);
}
#ifdef _LIBC
weak_alias (__re_search_2, re_search_2)
#endif
-static int
+static regoff_t
re_search_2_stub (struct re_pattern_buffer *bufp, const char *string1,
- int length1, const char *string2, int length2, int start,
- int range, struct re_registers *regs,
- int stop, int ret_len)
+ Idx length1, const char *string2, Idx length2, Idx start,
+ regoff_t range, struct re_registers *regs,
+ Idx stop, bool ret_len)
{
const char *str;
- int rval;
- int len = length1 + length2;
+ regoff_t rval;
+ Idx len;
char *s = NULL;
- if (BE (length1 < 0 || length2 < 0 || stop < 0 || len < length1, 0))
+ if (BE ((length1 < 0 || length2 < 0 || stop < 0
+ || INT_ADD_WRAPV (length1, length2, &len)),
+ 0))
return -2;
/* Concatenate the strings. */
@@ -353,42 +354,45 @@ re_search_2_stub (struct re_pattern_buffer *bufp, const char *string1,
else
str = string1;
- rval = re_search_stub (bufp, str, len, start, range, stop, regs, ret_len);
+ rval = re_search_stub (bufp, str, len, start, range, stop, regs,
+ ret_len);
re_free (s);
return rval;
}
/* The parameters have the same meaning as those of re_search.
Additional parameters:
- If RET_LEN is nonzero the length of the match is returned (re_match style);
+ If RET_LEN is true the length of the match is returned (re_match style);
otherwise the position of the match is returned. */
-static int
-re_search_stub (struct re_pattern_buffer *bufp, const char *string, int length,
- int start, int range, int stop, struct re_registers *regs,
- int ret_len)
+static regoff_t
+re_search_stub (struct re_pattern_buffer *bufp, const char *string, Idx length,
+ Idx start, regoff_t range, Idx stop, struct re_registers *regs,
+ bool ret_len)
{
reg_errcode_t result;
regmatch_t *pmatch;
- int nregs, rval;
+ Idx nregs;
+ regoff_t rval;
int eflags = 0;
- re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
+ re_dfa_t *dfa = bufp->buffer;
+ Idx last_start = start + range;
/* Check for out-of-range. */
if (BE (start < 0 || start > length, 0))
return -1;
- if (BE (start + range > length, 0))
- range = length - start;
- else if (BE (start + range < 0, 0))
- range = -start;
+ if (BE (length < last_start || (0 <= range && last_start < start), 0))
+ last_start = length;
+ else if (BE (last_start < 0 || (range < 0 && start <= last_start), 0))
+ last_start = 0;
- __libc_lock_lock (dfa->lock);
+ lock_lock (dfa->lock);
eflags |= (bufp->not_bol) ? REG_NOTBOL : 0;
eflags |= (bufp->not_eol) ? REG_NOTEOL : 0;
/* Compile fastmap if we haven't yet. */
- if (range > 0 && bufp->fastmap != NULL && !bufp->fastmap_accurate)
+ if (start < last_start && bufp->fastmap != NULL && !bufp->fastmap_accurate)
re_compile_fastmap (bufp);
if (BE (bufp->no_sub, 0))
@@ -397,8 +401,8 @@ re_search_stub (struct re_pattern_buffer *bufp, const char *string, int length,
/* We need at least 1 register. */
if (regs == NULL)
nregs = 1;
- else if (BE (bufp->regs_allocated == REGS_FIXED &&
- regs->num_regs < bufp->re_nsub + 1, 0))
+ else if (BE (bufp->regs_allocated == REGS_FIXED
+ && regs->num_regs <= bufp->re_nsub, 0))
{
nregs = regs->num_regs;
if (BE (nregs < 1, 0))
@@ -417,14 +421,14 @@ re_search_stub (struct re_pattern_buffer *bufp, const char *string, int length,
goto out;
}
- result = re_search_internal (bufp, string, length, start, range, stop,
+ result = re_search_internal (bufp, string, length, start, last_start, stop,
nregs, pmatch, eflags);
rval = 0;
- /* I hope we needn't fill ther regs with -1's when no match was found. */
+ /* I hope we needn't fill their regs with -1's when no match was found. */
if (result != REG_NOERROR)
- rval = -1;
+ rval = result == REG_NOMATCH ? -1 : -2;
else if (regs != NULL)
{
/* If caller wants register contents data back, copy them. */
@@ -446,18 +450,18 @@ re_search_stub (struct re_pattern_buffer *bufp, const char *string, int length,
}
re_free (pmatch);
out:
- __libc_lock_unlock (dfa->lock);
+ lock_unlock (dfa->lock);
return rval;
}
static unsigned
-re_copy_regs (struct re_registers *regs, regmatch_t *pmatch, int nregs,
+re_copy_regs (struct re_registers *regs, regmatch_t *pmatch, Idx nregs,
int regs_allocated)
{
int rval = REGS_REALLOCATE;
- int i;
- int need_regs = nregs + 1;
- /* We need one extra element beyond `num_regs' for the `-1' marker GNU code
+ Idx i;
+ Idx need_regs = nregs + 1;
+ /* We need one extra element beyond 'num_regs' for the '-1' marker GNU code
uses. */
/* Have the register data arrays been allocated? */
@@ -530,7 +534,7 @@ re_copy_regs (struct re_registers *regs, regmatch_t *pmatch, int nregs,
void
re_set_registers (struct re_pattern_buffer *bufp, struct re_registers *regs,
- unsigned num_regs, regoff_t *starts, regoff_t *ends)
+ __re_size_t num_regs, regoff_t *starts, regoff_t *ends)
{
if (num_regs)
{
@@ -543,7 +547,7 @@ re_set_registers (struct re_pattern_buffer *bufp, struct re_registers *regs,
{
bufp->regs_allocated = REGS_UNALLOCATED;
regs->num_regs = 0;
- regs->start = regs->end = (regoff_t *) 0;
+ regs->start = regs->end = NULL;
}
}
#ifdef _LIBC
@@ -568,32 +572,38 @@ re_exec (const char *s)
/* Searches for a compiled pattern PREG in the string STRING, whose
length is LENGTH. NMATCH, PMATCH, and EFLAGS have the same
- meaning as with regexec. START, and RANGE have the same meanings
- with re_search.
+ meaning as with regexec. LAST_START is START + RANGE, where
+ START and RANGE have the same meaning as with re_search.
Return REG_NOERROR if we find a match, and REG_NOMATCH if not,
otherwise return the error code.
Note: We assume front end functions already check ranges.
- (START + RANGE >= 0 && START + RANGE <= LENGTH) */
+ (0 <= LAST_START && LAST_START <= LENGTH) */
static reg_errcode_t
__attribute_warn_unused_result__
-re_search_internal (const regex_t *preg, const char *string, int length,
- int start, int range, int stop, size_t nmatch,
+re_search_internal (const regex_t *preg, const char *string, Idx length,
+ Idx start, Idx last_start, Idx stop, size_t nmatch,
regmatch_t pmatch[], int eflags)
{
reg_errcode_t err;
- const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;
- int left_lim, right_lim, incr;
- int fl_longest_match, match_first, match_kind, match_last = -1;
- int extra_nmatch;
- int sb, ch;
+ const re_dfa_t *dfa = preg->buffer;
+ Idx left_lim, right_lim;
+ int incr;
+ bool fl_longest_match;
+ int match_kind;
+ Idx match_first;
+ Idx match_last = -1;
+ Idx extra_nmatch;
+ bool sb;
+ int ch;
#if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
re_match_context_t mctx = { .dfa = dfa };
#else
re_match_context_t mctx;
#endif
- char *fastmap = (preg->fastmap != NULL && preg->fastmap_accurate
- && range && !preg->can_be_null) ? preg->fastmap : NULL;
+ char *fastmap = ((preg->fastmap != NULL && preg->fastmap_accurate
+ && start != last_start && !preg->can_be_null)
+ ? preg->fastmap : NULL);
RE_TRANSLATE_TYPE t = preg->translate;
#if !(defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
@@ -612,7 +622,7 @@ re_search_internal (const regex_t *preg, const char *string, int length,
#ifdef DEBUG
/* We assume front-end functions already check them. */
- assert (start + range >= 0 && start + range <= length);
+ assert (0 <= last_start && last_start <= length);
#endif
/* If initial states with non-begbuf contexts have no elements,
@@ -623,16 +633,17 @@ re_search_internal (const regex_t *preg, const char *string, int length,
&& (dfa->init_state_nl->nodes.nelem == 0
|| !preg->newline_anchor))
{
- if (start != 0 && start + range != 0)
- return REG_NOMATCH;
- start = range = 0;
+ if (start != 0 && last_start != 0)
+ return REG_NOMATCH;
+ start = last_start = 0;
}
/* We must check the longest matching, if nmatch > 0. */
fl_longest_match = (nmatch != 0 || dfa->nbackref);
err = re_string_allocate (&mctx.input, string, length, dfa->nodes_len + 1,
- preg->translate, preg->syntax & RE_ICASE, dfa);
+ preg->translate, (preg->syntax & RE_ICASE) != 0,
+ dfa);
if (BE (err != REG_NOERROR, 0))
goto free_return;
mctx.input.stop = stop;
@@ -650,7 +661,8 @@ re_search_internal (const regex_t *preg, const char *string, int length,
if (nmatch > 1 || dfa->has_mb_node)
{
/* Avoid overflow. */
- if (BE (SIZE_MAX / sizeof (re_dfastate_t *) <= mctx.input.bufs_len, 0))
+ if (BE ((MIN (IDX_MAX, SIZE_MAX / sizeof (re_dfastate_t *))
+ <= mctx.input.bufs_len), 0))
{
err = REG_ESPACE;
goto free_return;
@@ -670,15 +682,15 @@ re_search_internal (const regex_t *preg, const char *string, int length,
mctx.input.tip_context = (eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
: CONTEXT_NEWLINE | CONTEXT_BEGBUF;
- /* Check incrementally whether of not the input string match. */
- incr = (range < 0) ? -1 : 1;
- left_lim = (range < 0) ? start + range : start;
- right_lim = (range < 0) ? start : start + range;
+ /* Check incrementally whether the input string matches. */
+ incr = (last_start < start) ? -1 : 1;
+ left_lim = (last_start < start) ? last_start : start;
+ right_lim = (last_start < start) ? start : last_start;
sb = dfa->mb_cur_max == 1;
match_kind =
(fastmap
? ((sb || !(preg->syntax & RE_ICASE || t) ? 4 : 0)
- | (range >= 0 ? 2 : 0)
+ | (start <= last_start ? 2 : 0)
| (t != NULL ? 1 : 0))
: 8);
@@ -745,8 +757,8 @@ re_search_internal (const regex_t *preg, const char *string, int length,
{
/* If MATCH_FIRST is out of the valid range, reconstruct the
buffers. */
- unsigned int offset = match_first - mctx.input.raw_mbs_idx;
- if (BE (offset >= (unsigned int) mctx.input.valid_raw_len, 0))
+ __re_size_t offset = match_first - mctx.input.raw_mbs_idx;
+ if (BE (offset >= (__re_size_t) mctx.input.valid_raw_len, 0))
{
err = re_string_reconstruct (&mctx.input, match_first,
eflags);
@@ -788,7 +800,7 @@ re_search_internal (const regex_t *preg, const char *string, int length,
/* We assume that the matching starts from 0. */
mctx.state_log_top = mctx.nbkref_ents = mctx.max_mb_elem_len = 0;
match_last = check_matching (&mctx, fl_longest_match,
- range >= 0 ? &match_first : NULL);
+ start <= last_start ? &match_first : NULL);
if (match_last != -1)
{
if (BE (match_last == -2, 0))
@@ -831,7 +843,7 @@ re_search_internal (const regex_t *preg, const char *string, int length,
/* Set pmatch[] if we need. */
if (nmatch > 0)
{
- int reg_idx;
+ Idx reg_idx;
/* Initialize registers. */
for (reg_idx = 1; reg_idx < nmatch; ++reg_idx)
@@ -840,6 +852,9 @@ re_search_internal (const regex_t *preg, const char *string, int length,
/* Set the points where matching start/end. */
pmatch[0].rm_so = 0;
pmatch[0].rm_eo = mctx.match_last;
+ /* FIXME: This function should fail if mctx.match_last exceeds
+ the maximum possible regoff_t value. We need a new error
+ code REG_OVERFLOW. */
if (!preg->no_sub && nmatch > 1)
{
@@ -903,7 +918,7 @@ __attribute_warn_unused_result__
prune_impossible_nodes (re_match_context_t *mctx)
{
const re_dfa_t *const dfa = mctx->dfa;
- int halt_node, match_last;
+ Idx halt_node, match_last;
reg_errcode_t ret;
re_dfastate_t **sifted_states;
re_dfastate_t **lim_states = NULL;
@@ -915,7 +930,7 @@ prune_impossible_nodes (re_match_context_t *mctx)
halt_node = mctx->last_node;
/* Avoid overflow. */
- if (BE (SIZE_MAX / sizeof (re_dfastate_t *) <= match_last, 0))
+ if (BE (MIN (IDX_MAX, SIZE_MAX / sizeof (re_dfastate_t *)) <= match_last, 0))
return REG_ESPACE;
sifted_states = re_malloc (re_dfastate_t *, match_last + 1);
@@ -995,9 +1010,9 @@ prune_impossible_nodes (re_match_context_t *mctx)
since initial states may have constraints like "\<", "^", etc.. */
static inline re_dfastate_t *
-__attribute ((always_inline))
+__attribute__ ((always_inline))
acquire_init_state_context (reg_errcode_t *err, const re_match_context_t *mctx,
- int idx)
+ Idx idx)
{
const re_dfa_t *const dfa = mctx->dfa;
if (dfa->init_state->has_constraint)
@@ -1028,27 +1043,27 @@ acquire_init_state_context (reg_errcode_t *err, const re_match_context_t *mctx,
}
/* Check whether the regular expression match input string INPUT or not,
- and return the index where the matching end, return -1 if not match,
- or return -2 in case of an error.
+ and return the index where the matching end. Return -1 if
+ there is no match, and return -2 in case of an error.
FL_LONGEST_MATCH means we want the POSIX longest matching.
If P_MATCH_FIRST is not NULL, and the match fails, it is set to the
next place where we may want to try matching.
- Note that the matcher assume that the maching starts from the current
+ Note that the matcher assumes that the matching starts from the current
index of the buffer. */
-static int
+static Idx
__attribute_warn_unused_result__
-check_matching (re_match_context_t *mctx, int fl_longest_match,
- int *p_match_first)
+check_matching (re_match_context_t *mctx, bool fl_longest_match,
+ Idx *p_match_first)
{
const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
- int match = 0;
- int match_last = -1;
- int cur_str_idx = re_string_cur_idx (&mctx->input);
+ Idx match = 0;
+ Idx match_last = -1;
+ Idx cur_str_idx = re_string_cur_idx (&mctx->input);
re_dfastate_t *cur_state;
- int at_init_state = p_match_first != NULL;
- int next_start_idx = cur_str_idx;
+ bool at_init_state = p_match_first != NULL;
+ Idx next_start_idx = cur_str_idx;
err = REG_NOERROR;
cur_state = acquire_init_state_context (&err, mctx, cur_str_idx);
@@ -1067,7 +1082,7 @@ check_matching (re_match_context_t *mctx, int fl_longest_match,
later. E.g. Processing back references. */
if (BE (dfa->nbackref, 0))
{
- at_init_state = 0;
+ at_init_state = false;
err = check_subexp_matching_top (mctx, &cur_state->nodes, 0);
if (BE (err != REG_NOERROR, 0))
return err;
@@ -1100,7 +1115,7 @@ check_matching (re_match_context_t *mctx, int fl_longest_match,
while (!re_string_eoi (&mctx->input))
{
re_dfastate_t *old_state = cur_state;
- int next_char_idx = re_string_cur_idx (&mctx->input) + 1;
+ Idx next_char_idx = re_string_cur_idx (&mctx->input) + 1;
if ((BE (next_char_idx >= mctx->input.bufs_len, 0)
&& mctx->input.bufs_len < mctx->input.len)
@@ -1138,7 +1153,7 @@ check_matching (re_match_context_t *mctx, int fl_longest_match,
if (old_state == cur_state)
next_start_idx = next_char_idx;
else
- at_init_state = 0;
+ at_init_state = false;
}
if (cur_state->halt)
@@ -1169,29 +1184,29 @@ check_matching (re_match_context_t *mctx, int fl_longest_match,
/* Check NODE match the current context. */
-static int
-check_halt_node_context (const re_dfa_t *dfa, int node, unsigned int context)
+static bool
+check_halt_node_context (const re_dfa_t *dfa, Idx node, unsigned int context)
{
re_token_type_t type = dfa->nodes[node].type;
unsigned int constraint = dfa->nodes[node].constraint;
if (type != END_OF_RE)
- return 0;
+ return false;
if (!constraint)
- return 1;
+ return true;
if (NOT_SATISFY_NEXT_CONSTRAINT (constraint, context))
- return 0;
- return 1;
+ return false;
+ return true;
}
/* Check the halt state STATE match the current context.
Return 0 if not match, if the node, STATE has, is a halt node and
match the context, return the node. */
-static int
+static Idx
check_halt_state_context (const re_match_context_t *mctx,
- const re_dfastate_t *state, int idx)
+ const re_dfastate_t *state, Idx idx)
{
- int i;
+ Idx i;
unsigned int context;
#ifdef DEBUG
assert (state->halt);
@@ -1205,31 +1220,33 @@ check_halt_state_context (const re_match_context_t *mctx,
/* Compute the next node to which "NFA" transit from NODE("NFA" is a NFA
corresponding to the DFA).
- Return the destination node, and update EPS_VIA_NODES, return -1 in case
- of errors. */
+ Return the destination node, and update EPS_VIA_NODES;
+ return -1 in case of errors. */
-static int
-proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
- int *pidx, int node, re_node_set *eps_via_nodes,
+static Idx
+proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
+ Idx *pidx, Idx node, re_node_set *eps_via_nodes,
struct re_fail_stack_t *fs)
{
const re_dfa_t *const dfa = mctx->dfa;
- int i, err;
+ Idx i;
+ bool ok;
if (IS_EPSILON_NODE (dfa->nodes[node].type))
{
re_node_set *cur_nodes = &mctx->state_log[*pidx]->nodes;
re_node_set *edests = &dfa->edests[node];
- int dest_node;
- err = re_node_set_insert (eps_via_nodes, node);
- if (BE (err < 0, 0))
+ Idx dest_node;
+ ok = re_node_set_insert (eps_via_nodes, node);
+ if (BE (! ok, 0))
return -2;
- /* Pick up a valid destination, or return -1 if none is found. */
+ /* Pick up a valid destination, or return -1 if none
+ is found. */
for (dest_node = -1, i = 0; i < edests->nelem; ++i)
{
- int candidate = edests->elems[i];
+ Idx candidate = edests->elems[i];
if (!re_node_set_contains (cur_nodes, candidate))
continue;
- if (dest_node == -1)
+ if (dest_node == -1)
dest_node = candidate;
else
@@ -1253,7 +1270,7 @@ proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
}
else
{
- int naccepted = 0;
+ Idx naccepted = 0;
re_token_type_t type = dfa->nodes[node].type;
#ifdef RE_ENABLE_I18N
@@ -1263,7 +1280,7 @@ proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
#endif /* RE_ENABLE_I18N */
if (type == OP_BACK_REF)
{
- int subexp_idx = dfa->nodes[node].opr.idx + 1;
+ Idx subexp_idx = dfa->nodes[node].opr.idx + 1;
naccepted = regs[subexp_idx].rm_eo - regs[subexp_idx].rm_so;
if (fs != NULL)
{
@@ -1280,9 +1297,9 @@ proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
if (naccepted == 0)
{
- int dest_node;
- err = re_node_set_insert (eps_via_nodes, node);
- if (BE (err < 0, 0))
+ Idx dest_node;
+ ok = re_node_set_insert (eps_via_nodes, node);
+ if (BE (! ok, 0))
return -2;
dest_node = dfa->edests[node].elems[0];
if (re_node_set_contains (&mctx->state_log[*pidx]->nodes,
@@ -1294,7 +1311,7 @@ proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
if (naccepted != 0
|| check_node_accept (mctx, dfa->nodes + node, *pidx))
{
- int dest_node = dfa->nexts[node];
+ Idx dest_node = dfa->nexts[node];
*pidx = (naccepted == 0) ? *pidx + 1 : *pidx + naccepted;
if (fs && (*pidx > mctx->match_last || mctx->state_log[*pidx] == NULL
|| !re_node_set_contains (&mctx->state_log[*pidx]->nodes,
@@ -1309,16 +1326,16 @@ proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
static reg_errcode_t
__attribute_warn_unused_result__
-push_fail_stack (struct re_fail_stack_t *fs, int str_idx, int dest_node,
- int nregs, regmatch_t *regs, re_node_set *eps_via_nodes)
+push_fail_stack (struct re_fail_stack_t *fs, Idx str_idx, Idx dest_node,
+ Idx nregs, regmatch_t *regs, re_node_set *eps_via_nodes)
{
reg_errcode_t err;
- int num = fs->num++;
+ Idx num = fs->num++;
if (fs->num == fs->alloc)
{
struct re_fail_stack_ent_t *new_array;
- new_array = realloc (fs->stack, (sizeof (struct re_fail_stack_ent_t)
- * fs->alloc * 2));
+ new_array = re_realloc (fs->stack, struct re_fail_stack_ent_t,
+ fs->alloc * 2);
if (new_array == NULL)
return REG_ESPACE;
fs->alloc *= 2;
@@ -1334,11 +1351,11 @@ push_fail_stack (struct re_fail_stack_t *fs, int str_idx, int dest_node,
return err;
}
-static int
-pop_fail_stack (struct re_fail_stack_t *fs, int *pidx, int nregs,
+static Idx
+pop_fail_stack (struct re_fail_stack_t *fs, Idx *pidx, Idx nregs,
regmatch_t *regs, re_node_set *eps_via_nodes)
{
- int num = --fs->num;
+ Idx num = --fs->num;
assert (num >= 0);
*pidx = fs->stack[num].idx;
memcpy (regs, fs->stack[num].regs, sizeof (regmatch_t) * nregs);
@@ -1356,15 +1373,15 @@ pop_fail_stack (struct re_fail_stack_t *fs, int *pidx, int nregs,
static reg_errcode_t
__attribute_warn_unused_result__
set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
- regmatch_t *pmatch, int fl_backtrack)
+ regmatch_t *pmatch, bool fl_backtrack)
{
- const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;
- int idx, cur_node;
+ const re_dfa_t *dfa = preg->buffer;
+ Idx idx, cur_node;
re_node_set eps_via_nodes;
struct re_fail_stack_t *fs;
struct re_fail_stack_t fs_body = { 0, 2, NULL };
regmatch_t *prev_idx_match;
- int prev_idx_match_malloced = 0;
+ bool prev_idx_match_malloced = false;
#ifdef DEBUG
assert (nmatch > 1);
@@ -1393,7 +1410,7 @@ set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
free_fail_stack_return (fs);
return REG_ESPACE;
}
- prev_idx_match_malloced = 1;
+ prev_idx_match_malloced = true;
}
memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
@@ -1403,7 +1420,7 @@ set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
if (idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
{
- int reg_idx;
+ Idx reg_idx;
if (fs)
{
for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
@@ -1465,7 +1482,7 @@ free_fail_stack_return (struct re_fail_stack_t *fs)
{
if (fs)
{
- int fs_idx;
+ Idx fs_idx;
for (fs_idx = 0; fs_idx < fs->num; ++fs_idx)
{
re_node_set_free (&fs->stack[fs_idx].eps_via_nodes);
@@ -1478,12 +1495,12 @@ free_fail_stack_return (struct re_fail_stack_t *fs)
static void
update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
- regmatch_t *prev_idx_match, int cur_node, int cur_idx, int nmatch)
+ regmatch_t *prev_idx_match, Idx cur_node, Idx cur_idx, Idx nmatch)
{
int type = dfa->nodes[cur_node].type;
if (type == OP_OPEN_SUBEXP)
{
- int reg_num = dfa->nodes[cur_node].opr.idx + 1;
+ Idx reg_num = dfa->nodes[cur_node].opr.idx + 1;
/* We are at the first node of this sub expression. */
if (reg_num < nmatch)
@@ -1494,7 +1511,7 @@ update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
}
else if (type == OP_CLOSE_SUBEXP)
{
- int reg_num = dfa->nodes[cur_node].opr.idx + 1;
+ Idx reg_num = dfa->nodes[cur_node].opr.idx + 1;
if (reg_num < nmatch)
{
/* We are at the last node of this sub expression. */
@@ -1528,21 +1545,21 @@ update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
and sift the nodes in each states according to the following rules.
Updated state_log will be wrote to STATE_LOG.
- Rules: We throw away the Node `a' in the STATE_LOG[STR_IDX] if...
+ Rules: We throw away the Node 'a' in the STATE_LOG[STR_IDX] if...
1. When STR_IDX == MATCH_LAST(the last index in the state_log):
- If `a' isn't the LAST_NODE and `a' can't epsilon transit to
- the LAST_NODE, we throw away the node `a'.
- 2. When 0 <= STR_IDX < MATCH_LAST and `a' accepts
- string `s' and transit to `b':
+ If 'a' isn't the LAST_NODE and 'a' can't epsilon transit to
+ the LAST_NODE, we throw away the node 'a'.
+ 2. When 0 <= STR_IDX < MATCH_LAST and 'a' accepts
+ string 's' and transit to 'b':
i. If 'b' isn't in the STATE_LOG[STR_IDX+strlen('s')], we throw
- away the node `a'.
+ away the node 'a'.
ii. If 'b' is in the STATE_LOG[STR_IDX+strlen('s')] but 'b' is
- thrown away, we throw away the node `a'.
+ thrown away, we throw away the node 'a'.
3. When 0 <= STR_IDX < MATCH_LAST and 'a' epsilon transit to 'b':
i. If 'b' isn't in the STATE_LOG[STR_IDX], we throw away the
- node `a'.
+ node 'a'.
ii. If 'b' is in the STATE_LOG[STR_IDX] but 'b' is thrown away,
- we throw away the node `a'. */
+ we throw away the node 'a'. */
#define STATE_NODE_CONTAINS(state,node) \
((state) != NULL && re_node_set_contains (&(state)->nodes, node))
@@ -1552,7 +1569,7 @@ sift_states_backward (const re_match_context_t *mctx, re_sift_context_t *sctx)
{
reg_errcode_t err;
int null_cnt = 0;
- int str_idx = sctx->last_str_idx;
+ Idx str_idx = sctx->last_str_idx;
re_node_set cur_dest;
#ifdef DEBUG
@@ -1607,31 +1624,31 @@ sift_states_backward (const re_match_context_t *mctx, re_sift_context_t *sctx)
static reg_errcode_t
__attribute_warn_unused_result__
build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
- int str_idx, re_node_set *cur_dest)
+ Idx str_idx, re_node_set *cur_dest)
{
const re_dfa_t *const dfa = mctx->dfa;
const re_node_set *cur_src = &mctx->state_log[str_idx]->non_eps_nodes;
- int i;
+ Idx i;
/* Then build the next sifted state.
- We build the next sifted state on `cur_dest', and update
- `sifted_states[str_idx]' with `cur_dest'.
+ We build the next sifted state on 'cur_dest', and update
+ 'sifted_states[str_idx]' with 'cur_dest'.
Note:
- `cur_dest' is the sifted state from `state_log[str_idx + 1]'.
- `cur_src' points the node_set of the old `state_log[str_idx]'
+ 'cur_dest' is the sifted state from 'state_log[str_idx + 1]'.
+ 'cur_src' points the node_set of the old 'state_log[str_idx]'
(with the epsilon nodes pre-filtered out). */
for (i = 0; i < cur_src->nelem; i++)
{
- int prev_node = cur_src->elems[i];
+ Idx prev_node = cur_src->elems[i];
int naccepted = 0;
- int ret;
+ bool ok;
#ifdef DEBUG
re_token_type_t type = dfa->nodes[prev_node].type;
assert (!IS_EPSILON_NODE (type));
#endif
#ifdef RE_ENABLE_I18N
- /* If the node may accept `multi byte'. */
+ /* If the node may accept "multi byte". */
if (dfa->nodes[prev_node].accept_mb)
naccepted = sift_states_iter_mb (mctx, sctx, prev_node,
str_idx, sctx->last_str_idx);
@@ -1650,14 +1667,14 @@ build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
if (sctx->limits.nelem)
{
- int to_idx = str_idx + naccepted;
+ Idx to_idx = str_idx + naccepted;
if (check_dst_limits (mctx, &sctx->limits,
dfa->nexts[prev_node], to_idx,
prev_node, str_idx))
continue;
}
- ret = re_node_set_insert (cur_dest, prev_node);
- if (BE (ret == -1, 0))
+ ok = re_node_set_insert (cur_dest, prev_node);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
@@ -1667,9 +1684,9 @@ build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
/* Helper functions. */
static reg_errcode_t
-clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx)
+clean_state_log_if_needed (re_match_context_t *mctx, Idx next_state_log_idx)
{
- int top = mctx->state_log_top;
+ Idx top = mctx->state_log_top;
if ((next_state_log_idx >= mctx->input.bufs_len
&& mctx->input.bufs_len < mctx->input.len)
@@ -1693,9 +1710,9 @@ clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx)
static reg_errcode_t
merge_state_array (const re_dfa_t *dfa, re_dfastate_t **dst,
- re_dfastate_t **src, int num)
+ re_dfastate_t **src, Idx num)
{
- int st_idx;
+ Idx st_idx;
reg_errcode_t err;
for (st_idx = 0; st_idx < num; ++st_idx)
{
@@ -1719,7 +1736,7 @@ merge_state_array (const re_dfa_t *dfa, re_dfastate_t **dst,
static reg_errcode_t
update_cur_sifted_state (const re_match_context_t *mctx,
- re_sift_context_t *sctx, int str_idx,
+ re_sift_context_t *sctx, Idx str_idx,
re_node_set *dest_nodes)
{
const re_dfa_t *const dfa = mctx->dfa;
@@ -1770,7 +1787,7 @@ add_epsilon_src_nodes (const re_dfa_t *dfa, re_node_set *dest_nodes,
const re_node_set *candidates)
{
reg_errcode_t err = REG_NOERROR;
- int i;
+ Idx i;
re_dfastate_t *state = re_acquire_state (&err, dfa, dest_nodes);
if (BE (err != REG_NOERROR, 0))
@@ -1794,23 +1811,23 @@ add_epsilon_src_nodes (const re_dfa_t *dfa, re_node_set *dest_nodes,
}
static reg_errcode_t
-sub_epsilon_src_nodes (const re_dfa_t *dfa, int node, re_node_set *dest_nodes,
+sub_epsilon_src_nodes (const re_dfa_t *dfa, Idx node, re_node_set *dest_nodes,
const re_node_set *candidates)
{
- int ecl_idx;
+ Idx ecl_idx;
reg_errcode_t err;
re_node_set *inv_eclosure = dfa->inveclosures + node;
re_node_set except_nodes;
re_node_set_init_empty (&except_nodes);
for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
{
- int cur_node = inv_eclosure->elems[ecl_idx];
+ Idx cur_node = inv_eclosure->elems[ecl_idx];
if (cur_node == node)
continue;
if (IS_EPSILON_NODE (dfa->nodes[cur_node].type))
{
- int edst1 = dfa->edests[cur_node].elems[0];
- int edst2 = ((dfa->edests[cur_node].nelem > 1)
+ Idx edst1 = dfa->edests[cur_node].elems[0];
+ Idx edst2 = ((dfa->edests[cur_node].nelem > 1)
? dfa->edests[cur_node].elems[1] : -1);
if ((!re_node_set_contains (inv_eclosure, edst1)
&& re_node_set_contains (dest_nodes, edst1))
@@ -1830,10 +1847,10 @@ sub_epsilon_src_nodes (const re_dfa_t *dfa, int node, re_node_set *dest_nodes,
}
for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
{
- int cur_node = inv_eclosure->elems[ecl_idx];
+ Idx cur_node = inv_eclosure->elems[ecl_idx];
if (!re_node_set_contains (&except_nodes, cur_node))
{
- int idx = re_node_set_contains (dest_nodes, cur_node) - 1;
+ Idx idx = re_node_set_contains (dest_nodes, cur_node) - 1;
re_node_set_remove_at (dest_nodes, idx);
}
}
@@ -1841,18 +1858,18 @@ sub_epsilon_src_nodes (const re_dfa_t *dfa, int node, re_node_set *dest_nodes,
return REG_NOERROR;
}
-static int
-check_dst_limits (const re_match_context_t *mctx, re_node_set *limits,
- int dst_node, int dst_idx, int src_node, int src_idx)
+static bool
+check_dst_limits (const re_match_context_t *mctx, const re_node_set *limits,
+ Idx dst_node, Idx dst_idx, Idx src_node, Idx src_idx)
{
const re_dfa_t *const dfa = mctx->dfa;
- int lim_idx, src_pos, dst_pos;
+ Idx lim_idx, src_pos, dst_pos;
- int dst_bkref_idx = search_cur_bkref_entry (mctx, dst_idx);
- int src_bkref_idx = search_cur_bkref_entry (mctx, src_idx);
+ Idx dst_bkref_idx = search_cur_bkref_entry (mctx, dst_idx);
+ Idx src_bkref_idx = search_cur_bkref_entry (mctx, src_idx);
for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
{
- int subexp_idx;
+ Idx subexp_idx;
struct re_backref_cache_entry *ent;
ent = mctx->bkref_ents + limits->elems[lim_idx];
subexp_idx = dfa->nodes[ent->node].opr.idx;
@@ -1871,24 +1888,24 @@ check_dst_limits (const re_match_context_t *mctx, re_node_set *limits,
if (src_pos == dst_pos)
continue; /* This is unrelated limitation. */
else
- return 1;
+ return true;
}
- return 0;
+ return false;
}
static int
check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
- int subexp_idx, int from_node, int bkref_idx)
+ Idx subexp_idx, Idx from_node, Idx bkref_idx)
{
const re_dfa_t *const dfa = mctx->dfa;
const re_node_set *eclosures = dfa->eclosures + from_node;
- int node_idx;
+ Idx node_idx;
/* Else, we are on the boundary: examine the nodes on the epsilon
closure. */
for (node_idx = 0; node_idx < eclosures->nelem; ++node_idx)
{
- int node = eclosures->elems[node_idx];
+ Idx node = eclosures->elems[node_idx];
switch (dfa->nodes[node].type)
{
case OP_BACK_REF:
@@ -1897,7 +1914,8 @@ check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
struct re_backref_cache_entry *ent = mctx->bkref_ents + bkref_idx;
do
{
- int dst, cpos;
+ Idx dst;
+ int cpos;
if (ent->node != node)
continue;
@@ -1957,9 +1975,9 @@ check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
}
static int
-check_dst_limits_calc_pos (const re_match_context_t *mctx, int limit,
- int subexp_idx, int from_node, int str_idx,
- int bkref_idx)
+check_dst_limits_calc_pos (const re_match_context_t *mctx, Idx limit,
+ Idx subexp_idx, Idx from_node, Idx str_idx,
+ Idx bkref_idx)
{
struct re_backref_cache_entry *lim = mctx->bkref_ents + limit;
int boundaries;
@@ -1988,14 +2006,14 @@ check_dst_limits_calc_pos (const re_match_context_t *mctx, int limit,
static reg_errcode_t
check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
const re_node_set *candidates, re_node_set *limits,
- struct re_backref_cache_entry *bkref_ents, int str_idx)
+ struct re_backref_cache_entry *bkref_ents, Idx str_idx)
{
reg_errcode_t err;
- int node_idx, lim_idx;
+ Idx node_idx, lim_idx;
for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
{
- int subexp_idx;
+ Idx subexp_idx;
struct re_backref_cache_entry *ent;
ent = bkref_ents + limits->elems[lim_idx];
@@ -2005,11 +2023,11 @@ check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
subexp_idx = dfa->nodes[ent->node].opr.idx;
if (ent->subexp_to == str_idx)
{
- int ops_node = -1;
- int cls_node = -1;
+ Idx ops_node = -1;
+ Idx cls_node = -1;
for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
{
- int node = dest_nodes->elems[node_idx];
+ Idx node = dest_nodes->elems[node_idx];
re_token_type_t type = dfa->nodes[node].type;
if (type == OP_OPEN_SUBEXP
&& subexp_idx == dfa->nodes[node].opr.idx)
@@ -2033,7 +2051,7 @@ check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
if (cls_node >= 0)
for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
{
- int node = dest_nodes->elems[node_idx];
+ Idx node = dest_nodes->elems[node_idx];
if (!re_node_set_contains (dfa->inveclosures + node,
cls_node)
&& !re_node_set_contains (dfa->eclosures + node,
@@ -2053,7 +2071,7 @@ check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
{
for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
{
- int node = dest_nodes->elems[node_idx];
+ Idx node = dest_nodes->elems[node_idx];
re_token_type_t type = dfa->nodes[node].type;
if (type == OP_CLOSE_SUBEXP || type == OP_OPEN_SUBEXP)
{
@@ -2075,13 +2093,13 @@ check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
static reg_errcode_t
__attribute_warn_unused_result__
sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
- int str_idx, const re_node_set *candidates)
+ Idx str_idx, const re_node_set *candidates)
{
const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
- int node_idx, node;
+ Idx node_idx, node;
re_sift_context_t local_sctx;
- int first_idx = search_cur_bkref_entry (mctx, str_idx);
+ Idx first_idx = search_cur_bkref_entry (mctx, str_idx);
if (first_idx == -1)
return REG_NOERROR;
@@ -2090,7 +2108,7 @@ sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
for (node_idx = 0; node_idx < candidates->nelem; ++node_idx)
{
- int enabled_idx;
+ Idx enabled_idx;
re_token_type_t type;
struct re_backref_cache_entry *entry;
node = candidates->elems[node_idx];
@@ -2105,10 +2123,10 @@ sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
enabled_idx = first_idx;
do
{
- int subexp_len;
- int to_idx;
- int dst_node;
- int ret;
+ Idx subexp_len;
+ Idx to_idx;
+ Idx dst_node;
+ bool ok;
re_dfastate_t *cur_state;
if (entry->node != node)
@@ -2134,8 +2152,8 @@ sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
}
local_sctx.last_node = node;
local_sctx.last_str_idx = str_idx;
- ret = re_node_set_insert (&local_sctx.limits, enabled_idx);
- if (BE (ret < 0, 0))
+ ok = re_node_set_insert (&local_sctx.limits, enabled_idx);
+ if (BE (! ok, 0))
{
err = REG_ESPACE;
goto free_return;
@@ -2174,21 +2192,21 @@ sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
#ifdef RE_ENABLE_I18N
static int
sift_states_iter_mb (const re_match_context_t *mctx, re_sift_context_t *sctx,
- int node_idx, int str_idx, int max_str_idx)
+ Idx node_idx, Idx str_idx, Idx max_str_idx)
{
const re_dfa_t *const dfa = mctx->dfa;
int naccepted;
- /* Check the node can accept `multi byte'. */
+ /* Check the node can accept "multi byte". */
naccepted = check_node_accept_bytes (dfa, node_idx, &mctx->input, str_idx);
if (naccepted > 0 && str_idx + naccepted <= max_str_idx &&
!STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + naccepted],
dfa->nexts[node_idx]))
- /* The node can't accept the `multi byte', or the
+ /* The node can't accept the "multi byte", or the
destination was already thrown away, then the node
- could't accept the current input `multi byte'. */
+ could't accept the current input "multi byte". */
naccepted = 0;
/* Otherwise, it is sure that the node could accept
- `naccepted' bytes input. */
+ 'naccepted' bytes input. */
return naccepted;
}
#endif /* RE_ENABLE_I18N */
@@ -2259,12 +2277,12 @@ transit_state (reg_errcode_t *err, re_match_context_t *mctx,
}
/* Update the state_log if we need */
-re_dfastate_t *
+static re_dfastate_t *
merge_state_with_log (reg_errcode_t *err, re_match_context_t *mctx,
re_dfastate_t *next_state)
{
const re_dfa_t *const dfa = mctx->dfa;
- int cur_idx = re_string_cur_idx (&mctx->input);
+ Idx cur_idx = re_string_cur_idx (&mctx->input);
if (cur_idx > mctx->state_log_top)
{
@@ -2337,14 +2355,14 @@ merge_state_with_log (reg_errcode_t *err, re_match_context_t *mctx,
/* Skip bytes in the input that correspond to part of a
multi-byte match, then look in the log for a state
from which to restart matching. */
-re_dfastate_t *
+static re_dfastate_t *
find_recover_state (reg_errcode_t *err, re_match_context_t *mctx)
{
re_dfastate_t *cur_state;
do
{
- int max = mctx->state_log_top;
- int cur_str_idx = re_string_cur_idx (&mctx->input);
+ Idx max = mctx->state_log_top;
+ Idx cur_str_idx = re_string_cur_idx (&mctx->input);
do
{
@@ -2369,10 +2387,10 @@ find_recover_state (reg_errcode_t *err, re_match_context_t *mctx)
static reg_errcode_t
check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
- int str_idx)
+ Idx str_idx)
{
const re_dfa_t *const dfa = mctx->dfa;
- int node_idx;
+ Idx node_idx;
reg_errcode_t err;
/* TODO: This isn't efficient.
@@ -2382,7 +2400,7 @@ check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
E.g. RE: (a){2} */
for (node_idx = 0; node_idx < cur_nodes->nelem; ++node_idx)
{
- int node = cur_nodes->elems[node_idx];
+ Idx node = cur_nodes->elems[node_idx];
if (dfa->nodes[node].type == OP_OPEN_SUBEXP
&& dfa->nodes[node].opr.idx < BITSET_WORD_BITS
&& (dfa->used_bkref_map
@@ -2407,7 +2425,7 @@ transit_state_sb (reg_errcode_t *err, re_match_context_t *mctx,
const re_dfa_t *const dfa = mctx->dfa;
re_node_set next_nodes;
re_dfastate_t *next_state;
- int node_cnt, cur_str_idx = re_string_cur_idx (&mctx->input);
+ Idx node_cnt, cur_str_idx = re_string_cur_idx (&mctx->input);
unsigned int context;
*err = re_node_set_alloc (&next_nodes, state->nodes.nelem + 1);
@@ -2415,7 +2433,7 @@ transit_state_sb (reg_errcode_t *err, re_match_context_t *mctx,
return NULL;
for (node_cnt = 0; node_cnt < state->nodes.nelem; ++node_cnt)
{
- int cur_node = state->nodes.elems[node_cnt];
+ Idx cur_node = state->nodes.elems[node_cnt];
if (check_node_accept (mctx, dfa->nodes + cur_node, cur_str_idx))
{
*err = re_node_set_merge (&next_nodes,
@@ -2444,13 +2462,14 @@ transit_state_mb (re_match_context_t *mctx, re_dfastate_t *pstate)
{
const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
- int i;
+ Idx i;
for (i = 0; i < pstate->nodes.nelem; ++i)
{
re_node_set dest_nodes, *new_nodes;
- int cur_node_idx = pstate->nodes.elems[i];
- int naccepted, dest_idx;
+ Idx cur_node_idx = pstate->nodes.elems[i];
+ int naccepted;
+ Idx dest_idx;
unsigned int context;
re_dfastate_t *dest_state;
@@ -2473,7 +2492,7 @@ transit_state_mb (re_match_context_t *mctx, re_dfastate_t *pstate)
if (naccepted == 0)
continue;
- /* The node can accepts `naccepted' bytes. */
+ /* The node can accepts 'naccepted' bytes. */
dest_idx = re_string_cur_idx (&mctx->input) + naccepted;
mctx->max_mb_elem_len = ((mctx->max_mb_elem_len < naccepted) ? naccepted
: mctx->max_mb_elem_len);
@@ -2513,18 +2532,18 @@ transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
{
const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
- int i;
- int cur_str_idx = re_string_cur_idx (&mctx->input);
+ Idx i;
+ Idx cur_str_idx = re_string_cur_idx (&mctx->input);
for (i = 0; i < nodes->nelem; ++i)
{
- int dest_str_idx, prev_nelem, bkc_idx;
- int node_idx = nodes->elems[i];
+ Idx dest_str_idx, prev_nelem, bkc_idx;
+ Idx node_idx = nodes->elems[i];
unsigned int context;
const re_token_t *node = dfa->nodes + node_idx;
re_node_set *new_dest_nodes;
- /* Check whether `node' is a backreference or not. */
+ /* Check whether 'node' is a backreference or not. */
if (node->type != OP_BACK_REF)
continue;
@@ -2536,21 +2555,21 @@ transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
continue;
}
- /* `node' is a backreference.
+ /* 'node' is a backreference.
Check the substring which the substring matched. */
bkc_idx = mctx->nbkref_ents;
err = get_subexp (mctx, node_idx, cur_str_idx);
if (BE (err != REG_NOERROR, 0))
goto free_return;
- /* And add the epsilon closures (which is `new_dest_nodes') of
+ /* And add the epsilon closures (which is 'new_dest_nodes') of
the backreference to appropriate state_log. */
#ifdef DEBUG
assert (dfa->nexts[node_idx] != -1);
#endif
for (; bkc_idx < mctx->nbkref_ents; ++bkc_idx)
{
- int subexp_len;
+ Idx subexp_len;
re_dfastate_t *dest_state;
struct re_backref_cache_entry *bkref_ent;
bkref_ent = mctx->bkref_ents + bkc_idx;
@@ -2567,7 +2586,7 @@ transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
dest_state = mctx->state_log[dest_str_idx];
prev_nelem = ((mctx->state_log[cur_str_idx] == NULL) ? 0
: mctx->state_log[cur_str_idx]->nodes.nelem);
- /* Add `new_dest_node' to state_log. */
+ /* Add 'new_dest_node' to state_log. */
if (dest_state == NULL)
{
mctx->state_log[dest_str_idx]
@@ -2623,13 +2642,13 @@ transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
static reg_errcode_t
__attribute_warn_unused_result__
-get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
+get_subexp (re_match_context_t *mctx, Idx bkref_node, Idx bkref_str_idx)
{
const re_dfa_t *const dfa = mctx->dfa;
- int subexp_num, sub_top_idx;
+ Idx subexp_num, sub_top_idx;
const char *buf = (const char *) re_string_get_buffer (&mctx->input);
/* Return if we have already checked BKREF_NODE at BKREF_STR_IDX. */
- int cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
+ Idx cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
if (cache_idx != -1)
{
const struct re_backref_cache_entry *entry
@@ -2648,7 +2667,7 @@ get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
reg_errcode_t err;
re_sub_match_top_t *sub_top = mctx->sub_tops[sub_top_idx];
re_sub_match_last_t *sub_last;
- int sub_last_idx, sl_str, bkref_str_off;
+ Idx sub_last_idx, sl_str, bkref_str_off;
if (dfa->nodes[sub_top->node].opr.idx != subexp_num)
continue; /* It isn't related. */
@@ -2659,7 +2678,7 @@ get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
evaluated. */
for (sub_last_idx = 0; sub_last_idx < sub_top->nlasts; ++sub_last_idx)
{
- int sl_str_diff;
+ regoff_t sl_str_diff;
sub_last = sub_top->lasts[sub_last_idx];
sl_str_diff = sub_last->str_idx - sl_str;
/* The matched string by the sub expression match with the substring
@@ -2705,7 +2724,8 @@ get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
/* Then, search for the other last nodes of the sub expression. */
for (; sl_str <= bkref_str_idx; ++sl_str)
{
- int cls_node, sl_str_off;
+ Idx cls_node;
+ regoff_t sl_str_off;
const re_node_set *nodes;
sl_str_off = sl_str - sub_top->str_idx;
/* The matched string by the sub expression match with the substring
@@ -2772,10 +2792,10 @@ get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
static reg_errcode_t
get_subexp_sub (re_match_context_t *mctx, const re_sub_match_top_t *sub_top,
- re_sub_match_last_t *sub_last, int bkref_node, int bkref_str)
+ re_sub_match_last_t *sub_last, Idx bkref_node, Idx bkref_str)
{
reg_errcode_t err;
- int to_idx;
+ Idx to_idx;
/* Can the subexpression arrive the back reference? */
err = check_arrival (mctx, &sub_last->path, sub_last->node,
sub_last->str_idx, bkref_node, bkref_str,
@@ -2798,14 +2818,14 @@ get_subexp_sub (re_match_context_t *mctx, const re_sub_match_top_t *sub_top,
nodes.
E.g. RE: (a){2} */
-static int
+static Idx
find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
- int subexp_idx, int type)
+ Idx subexp_idx, int type)
{
- int cls_idx;
+ Idx cls_idx;
for (cls_idx = 0; cls_idx < nodes->nelem; ++cls_idx)
{
- int cls_node = nodes->elems[cls_idx];
+ Idx cls_node = nodes->elems[cls_idx];
const re_token_t *node = dfa->nodes + cls_node;
if (node->type == type
&& node->opr.idx == subexp_idx)
@@ -2821,12 +2841,12 @@ find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
static reg_errcode_t
__attribute_warn_unused_result__
-check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
- int top_str, int last_node, int last_str, int type)
+check_arrival (re_match_context_t *mctx, state_array_t *path, Idx top_node,
+ Idx top_str, Idx last_node, Idx last_str, int type)
{
const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err = REG_NOERROR;
- int subexp_num, backup_cur_idx, str_idx, null_cnt;
+ Idx subexp_num, backup_cur_idx, str_idx, null_cnt;
re_dfastate_t *cur_state = NULL;
re_node_set *cur_nodes, next_nodes;
re_dfastate_t **backup_state_log;
@@ -2837,20 +2857,24 @@ check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
if (BE (path->alloc < last_str + mctx->max_mb_elem_len + 1, 0))
{
re_dfastate_t **new_array;
- int old_alloc = path->alloc;
- path->alloc += last_str + mctx->max_mb_elem_len + 1;
- new_array = re_realloc (path->array, re_dfastate_t *, path->alloc);
+ Idx old_alloc = path->alloc;
+ Idx incr_alloc = last_str + mctx->max_mb_elem_len + 1;
+ Idx new_alloc;
+ if (BE (IDX_MAX - old_alloc < incr_alloc, 0))
+ return REG_ESPACE;
+ new_alloc = old_alloc + incr_alloc;
+ if (BE (SIZE_MAX / sizeof (re_dfastate_t *) < new_alloc, 0))
+ return REG_ESPACE;
+ new_array = re_realloc (path->array, re_dfastate_t *, new_alloc);
if (BE (new_array == NULL, 0))
- {
- path->alloc = old_alloc;
- return REG_ESPACE;
- }
+ return REG_ESPACE;
path->array = new_array;
+ path->alloc = new_alloc;
memset (new_array + old_alloc, '\0',
sizeof (re_dfastate_t *) * (path->alloc - old_alloc));
}
- str_idx = path->next_idx ?: top_str;
+ str_idx = path->next_idx ? path->next_idx : top_str;
/* Temporary modify MCTX. */
backup_state_log = mctx->state_log;
@@ -2982,12 +3006,12 @@ check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
static reg_errcode_t
__attribute_warn_unused_result__
-check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
+check_arrival_add_next_nodes (re_match_context_t *mctx, Idx str_idx,
re_node_set *cur_nodes, re_node_set *next_nodes)
{
const re_dfa_t *const dfa = mctx->dfa;
- int result;
- int cur_idx;
+ bool ok;
+ Idx cur_idx;
#ifdef RE_ENABLE_I18N
reg_errcode_t err = REG_NOERROR;
#endif
@@ -2996,13 +3020,13 @@ check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
{
int naccepted = 0;
- int cur_node = cur_nodes->elems[cur_idx];
+ Idx cur_node = cur_nodes->elems[cur_idx];
#ifdef DEBUG
re_token_type_t type = dfa->nodes[cur_node].type;
assert (!IS_EPSILON_NODE (type));
#endif
#ifdef RE_ENABLE_I18N
- /* If the node may accept `multi byte'. */
+ /* If the node may accept "multi byte". */
if (dfa->nodes[cur_node].accept_mb)
{
naccepted = check_node_accept_bytes (dfa, cur_node, &mctx->input,
@@ -3010,8 +3034,8 @@ check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
if (naccepted > 1)
{
re_dfastate_t *dest_state;
- int next_node = dfa->nexts[cur_node];
- int next_idx = str_idx + naccepted;
+ Idx next_node = dfa->nexts[cur_node];
+ Idx next_idx = str_idx + naccepted;
dest_state = mctx->state_log[next_idx];
re_node_set_empty (&union_set);
if (dest_state)
@@ -3023,8 +3047,8 @@ check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
return err;
}
}
- result = re_node_set_insert (&union_set, next_node);
- if (BE (result < 0, 0))
+ ok = re_node_set_insert (&union_set, next_node);
+ if (BE (! ok, 0))
{
re_node_set_free (&union_set);
return REG_ESPACE;
@@ -3043,8 +3067,8 @@ check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
if (naccepted
|| check_node_accept (mctx, dfa->nodes + cur_node, str_idx))
{
- result = re_node_set_insert (next_nodes, dfa->nexts[cur_node]);
- if (BE (result < 0, 0))
+ ok = re_node_set_insert (next_nodes, dfa->nexts[cur_node]);
+ if (BE (! ok, 0))
{
re_node_set_free (&union_set);
return REG_ESPACE;
@@ -3063,10 +3087,10 @@ check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
static reg_errcode_t
check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
- int ex_subexp, int type)
+ Idx ex_subexp, int type)
{
reg_errcode_t err;
- int idx, outside_node;
+ Idx idx, outside_node;
re_node_set new_nodes;
#ifdef DEBUG
assert (cur_nodes->nelem);
@@ -3079,7 +3103,7 @@ check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
for (idx = 0; idx < cur_nodes->nelem; ++idx)
{
- int cur_node = cur_nodes->elems[idx];
+ Idx cur_node = cur_nodes->elems[idx];
const re_node_set *eclosure = dfa->eclosures + cur_node;
outside_node = find_subexp_node (dfa, eclosure, ex_subexp, type);
if (outside_node == -1)
@@ -3116,31 +3140,32 @@ check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
static reg_errcode_t
__attribute_warn_unused_result__
check_arrival_expand_ecl_sub (const re_dfa_t *dfa, re_node_set *dst_nodes,
- int target, int ex_subexp, int type)
+ Idx target, Idx ex_subexp, int type)
{
- int cur_node;
+ Idx cur_node;
for (cur_node = target; !re_node_set_contains (dst_nodes, cur_node);)
{
- int err;
+ bool ok;
if (dfa->nodes[cur_node].type == type
&& dfa->nodes[cur_node].opr.idx == ex_subexp)
{
if (type == OP_CLOSE_SUBEXP)
{
- err = re_node_set_insert (dst_nodes, cur_node);
- if (BE (err == -1, 0))
+ ok = re_node_set_insert (dst_nodes, cur_node);
+ if (BE (! ok, 0))
return REG_ESPACE;
}
break;
}
- err = re_node_set_insert (dst_nodes, cur_node);
- if (BE (err == -1, 0))
+ ok = re_node_set_insert (dst_nodes, cur_node);
+ if (BE (! ok, 0))
return REG_ESPACE;
if (dfa->edests[cur_node].nelem == 0)
break;
if (dfa->edests[cur_node].nelem == 2)
{
+ reg_errcode_t err;
err = check_arrival_expand_ecl_sub (dfa, dst_nodes,
dfa->edests[cur_node].elems[1],
ex_subexp, type);
@@ -3160,11 +3185,11 @@ check_arrival_expand_ecl_sub (const re_dfa_t *dfa, re_node_set *dst_nodes,
static reg_errcode_t
__attribute_warn_unused_result__
expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
- int cur_str, int subexp_num, int type)
+ Idx cur_str, Idx subexp_num, int type)
{
const re_dfa_t *const dfa = mctx->dfa;
reg_errcode_t err;
- int cache_idx_start = search_cur_bkref_entry (mctx, cur_str);
+ Idx cache_idx_start = search_cur_bkref_entry (mctx, cur_str);
struct re_backref_cache_entry *ent;
if (cache_idx_start == -1)
@@ -3174,7 +3199,7 @@ expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
ent = mctx->bkref_ents + cache_idx_start;
do
{
- int to_idx, next_node;
+ Idx to_idx, next_node;
/* Is this entry ENT is appropriate? */
if (!re_node_set_contains (cur_nodes, ent->node))
@@ -3212,14 +3237,14 @@ expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
next_node = dfa->nexts[ent->node];
if (mctx->state_log[to_idx])
{
- int ret;
+ bool ok;
if (re_node_set_contains (&mctx->state_log[to_idx]->nodes,
next_node))
continue;
err = re_node_set_init_copy (&union_set,
&mctx->state_log[to_idx]->nodes);
- ret = re_node_set_insert (&union_set, next_node);
- if (BE (err != REG_NOERROR || ret < 0, 0))
+ ok = re_node_set_insert (&union_set, next_node);
+ if (BE (err != REG_NOERROR || ! ok, 0))
{
re_node_set_free (&union_set);
err = err != REG_NOERROR ? err : REG_ESPACE;
@@ -3244,17 +3269,19 @@ expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
}
/* Build transition table for the state.
- Return 1 if succeeded, otherwise return NULL. */
+ Return true if successful. */
-static int
+static bool
build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
{
reg_errcode_t err;
- int i, j, ch, need_word_trtable = 0;
+ Idx i, j;
+ int ch;
+ bool need_word_trtable = false;
bitset_word_t elem, mask;
bool dests_node_malloced = false;
bool dest_states_malloced = false;
- int ndests; /* Number of the destination states from `state'. */
+ Idx ndests; /* Number of the destination states from 'state'. */
re_dfastate_t **trtable;
re_dfastate_t **dest_states = NULL, **dest_states_word, **dest_states_nl;
re_node_set follows, *dests_node;
@@ -3268,8 +3295,8 @@ build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
} *dests_alloc;
/* We build DFA states which corresponds to the destination nodes
- from `state'. `dests_node[i]' represents the nodes which i-th
- destination state contains, and `dests_ch[i]' represents the
+ from 'state'. 'dests_node[i]' represents the nodes which i-th
+ destination state contains, and 'dests_ch[i]' represents the
characters which i-th destination state accepts. */
if (__libc_use_alloca (sizeof (struct dests_alloc)))
dests_alloc = (struct dests_alloc *) alloca (sizeof (struct dests_alloc));
@@ -3277,32 +3304,32 @@ build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
{
dests_alloc = re_malloc (struct dests_alloc, 1);
if (BE (dests_alloc == NULL, 0))
- return 0;
+ return false;
dests_node_malloced = true;
}
dests_node = dests_alloc->dests_node;
dests_ch = dests_alloc->dests_ch;
- /* Initialize transiton table. */
+ /* Initialize transition table. */
state->word_trtable = state->trtable = NULL;
- /* At first, group all nodes belonging to `state' into several
+ /* At first, group all nodes belonging to 'state' into several
destinations. */
ndests = group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch);
if (BE (ndests <= 0, 0))
{
if (dests_node_malloced)
- free (dests_alloc);
- /* Return 0 in case of an error, 1 otherwise. */
+ re_free (dests_alloc);
+ /* Return false in case of an error, true otherwise. */
if (ndests == 0)
{
state->trtable = (re_dfastate_t **)
calloc (sizeof (re_dfastate_t *), SBC_MAX);
- if (BE (state->trtable == NULL, 0))
- return 0;
- return 1;
+ if (BE (state->trtable == NULL, 0))
+ return false;
+ return true;
}
- return 0;
+ return false;
}
err = re_node_set_alloc (&follows, ndests + 1);
@@ -3322,19 +3349,18 @@ build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
alloca (ndests * 3 * sizeof (re_dfastate_t *));
else
{
- dest_states = (re_dfastate_t **)
- malloc (ndests * 3 * sizeof (re_dfastate_t *));
+ dest_states = re_malloc (re_dfastate_t *, ndests * 3);
if (BE (dest_states == NULL, 0))
{
out_free:
if (dest_states_malloced)
- free (dest_states);
+ re_free (dest_states);
re_node_set_free (&follows);
for (i = 0; i < ndests; ++i)
re_node_set_free (dests_node + i);
if (dests_node_malloced)
- free (dests_alloc);
- return 0;
+ re_free (dests_alloc);
+ return false;
}
dest_states_malloced = true;
}
@@ -3345,7 +3371,7 @@ out_free:
/* Then build the states for all destinations. */
for (i = 0; i < ndests; ++i)
{
- int next_node;
+ Idx next_node;
re_node_set_empty (&follows);
/* Merge the follows of this destination states. */
for (j = 0; j < dests_node[i].nelem; ++j)
@@ -3371,13 +3397,13 @@ out_free:
goto out_free;
if (dest_states[i] != dest_states_word[i] && dfa->mb_cur_max > 1)
- need_word_trtable = 1;
+ need_word_trtable = true;
dest_states_nl[i] = re_acquire_state_context (&err, dfa, &follows,
CONTEXT_NEWLINE);
if (BE (dest_states_nl[i] == NULL && err != REG_NOERROR, 0))
goto out_free;
- }
+ }
else
{
dest_states_word[i] = dest_states[i];
@@ -3464,16 +3490,16 @@ out_free:
}
if (dest_states_malloced)
- free (dest_states);
+ re_free (dest_states);
re_node_set_free (&follows);
for (i = 0; i < ndests; ++i)
re_node_set_free (dests_node + i);
if (dests_node_malloced)
- free (dests_alloc);
+ re_free (dests_alloc);
- return 1;
+ return true;
}
/* Group all nodes belonging to STATE into several destinations.
@@ -3481,20 +3507,20 @@ out_free:
to DESTS_NODE[i] and set the characters accepted by the destination
to DEST_CH[i]. This function return the number of destinations. */
-static int
+static Idx
group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
re_node_set *dests_node, bitset_t *dests_ch)
{
reg_errcode_t err;
- int result;
- int i, j, k;
- int ndests; /* Number of the destinations from `state'. */
+ bool ok;
+ Idx i, j, k;
+ Idx ndests; /* Number of the destinations from 'state'. */
bitset_t accepts; /* Characters a node can accept. */
const re_node_set *cur_nodes = &state->nodes;
bitset_empty (accepts);
ndests = 0;
- /* For all the nodes belonging to `state', */
+ /* For all the nodes belonging to 'state', */
for (i = 0; i < cur_nodes->nelem; ++i)
{
re_token_t *node = &dfa->nodes[cur_nodes->elems[i]];
@@ -3524,7 +3550,10 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
#ifdef RE_ENABLE_I18N
else if (type == OP_UTF8_PERIOD)
{
- memset (accepts, '\xff', sizeof (bitset_t) / 2);
+ if (ASCII_CHARS % BITSET_WORD_BITS == 0)
+ memset (accepts, -1, ASCII_CHARS / CHAR_BIT);
+ else
+ bitset_merge (accepts, utf8_sb_map);
if (!(dfa->syntax & RE_DOT_NEWLINE))
bitset_clear (accepts, '\n');
if (dfa->syntax & RE_DOT_NOT_NULL)
@@ -3534,7 +3563,7 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
else
continue;
- /* Check the `accepts' and sift the characters which are not
+ /* Check the 'accepts' and sift the characters which are not
match it the context. */
if (constraint)
{
@@ -3593,7 +3622,7 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
}
}
- /* Then divide `accepts' into DFA states, or create a new
+ /* Then divide 'accepts' into DFA states, or create a new
state. Above, we make sure that accepts is not empty. */
for (j = 0; j < ndests; ++j)
{
@@ -3606,7 +3635,7 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
if (type == CHARACTER && !bitset_contain (dests_ch[j], node->opr.c))
continue;
- /* Enumerate the intersection set of this state and `accepts'. */
+ /* Enumerate the intersection set of this state and 'accepts'. */
has_intersec = 0;
for (k = 0; k < BITSET_WORDS; ++k)
has_intersec |= intersec[k] = accepts[k] & dests_ch[j][k];
@@ -3614,7 +3643,7 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
if (!has_intersec)
continue;
- /* Then check if this state is a subset of `accepts'. */
+ /* Then check if this state is a subset of 'accepts'. */
not_subset = not_consumed = 0;
for (k = 0; k < BITSET_WORDS; ++k)
{
@@ -3622,8 +3651,8 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
not_consumed |= accepts[k] = accepts[k] & ~dests_ch[j][k];
}
- /* If this state isn't a subset of `accepts', create a
- new group state, which has the `remains'. */
+ /* If this state isn't a subset of 'accepts', create a
+ new group state, which has the 'remains'. */
if (not_subset)
{
bitset_copy (dests_ch[ndests], remains);
@@ -3635,8 +3664,8 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
}
/* Put the position in the current group. */
- result = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
- if (BE (result < 0, 0))
+ ok = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
+ if (BE (! ok, 0))
goto error_return;
/* If all characters are consumed, go to next node. */
@@ -3662,7 +3691,7 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
}
#ifdef RE_ENABLE_I18N
-/* Check how many bytes the node `dfa->nodes[node_idx]' accepts.
+/* Check how many bytes the node 'dfa->nodes[node_idx]' accepts.
Return the number of the bytes the node accepts.
STR_IDX is the current index of the input string.
@@ -3675,12 +3704,12 @@ group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
# endif
static int
-check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
- const re_string_t *input, int str_idx)
+check_node_accept_bytes (const re_dfa_t *dfa, Idx node_idx,
+ const re_string_t *input, Idx str_idx)
{
const re_token_t *node = dfa->nodes + node_idx;
int char_len, elem_len;
- int i;
+ Idx i;
if (BE (node->type == OP_UTF8_PERIOD, 0))
{
@@ -3759,7 +3788,7 @@ check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
# ifdef _LIBC
const unsigned char *pin
= ((const unsigned char *) re_string_get_buffer (input) + str_idx);
- int j;
+ Idx j;
uint32_t nrules;
# endif /* _LIBC */
int match_len = 0;
@@ -3827,6 +3856,7 @@ check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
in_collseq = find_collation_sequence_value (pin, elem_len);
}
/* match with range expression? */
+ /* FIXME: Implement rational ranges here, too. */
for (i = 0; i < cset->nranges; ++i)
if (cset->range_starts[i] <= in_collseq
&& in_collseq <= cset->range_ends[i])
@@ -3856,7 +3886,7 @@ check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
if (weight_len == weights[equiv_class_idx & 0xffffff]
&& (idx >> 24) == (equiv_class_idx >> 24))
{
- int cnt = 0;
+ Idx cnt = 0;
idx &= 0xffffff;
equiv_class_idx &= 0xffffff;
@@ -3878,18 +3908,9 @@ check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
# endif /* _LIBC */
{
/* match with range expression? */
-#if __GNUC__ >= 2
- wchar_t cmp_buf[] = {L'\0', L'\0', wc, L'\0', L'\0', L'\0'};
-#else
- wchar_t cmp_buf[] = {L'\0', L'\0', L'\0', L'\0', L'\0', L'\0'};
- cmp_buf[2] = wc;
-#endif
for (i = 0; i < cset->nranges; ++i)
{
- cmp_buf[0] = cset->range_starts[i];
- cmp_buf[4] = cset->range_ends[i];
- if (__wcscoll (cmp_buf, cmp_buf + 2) <= 0
- && __wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
+ if (cset->range_starts[i] <= wc && wc <= cset->range_ends[i])
{
match_len = char_len;
goto check_node_accept_bytes_match;
@@ -3936,7 +3957,8 @@ find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
for (idx = 0; idx < extrasize;)
{
- int mbs_cnt, found = 0;
+ int mbs_cnt;
+ bool found = false;
int32_t elem_mbs_len;
/* Skip the name of collating element name. */
idx = idx + extra[idx] + 1;
@@ -3948,7 +3970,7 @@ find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
break;
if (mbs_cnt == elem_mbs_len)
/* Found the entry. */
- found = 1;
+ found = true;
}
/* Skip the byte sequence of the collating element. */
idx += elem_mbs_len;
@@ -3973,9 +3995,9 @@ find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
/* Check whether the node accepts the byte which is IDX-th
byte of the INPUT. */
-static int
+static bool
check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
- int idx)
+ Idx idx)
{
unsigned char ch;
ch = re_string_byte_at (&mctx->input, idx);
@@ -3983,28 +4005,28 @@ check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
{
case CHARACTER:
if (node->opr.c != ch)
- return 0;
+ return false;
break;
case SIMPLE_BRACKET:
if (!bitset_contain (node->opr.sbcset, ch))
- return 0;
+ return false;
break;
#ifdef RE_ENABLE_I18N
case OP_UTF8_PERIOD:
- if (ch >= 0x80)
- return 0;
- /* FALLTHROUGH */
+ if (ch >= ASCII_CHARS)
+ return false;
+ FALLTHROUGH;
#endif
case OP_PERIOD:
if ((ch == '\n' && !(mctx->dfa->syntax & RE_DOT_NEWLINE))
|| (ch == '\0' && (mctx->dfa->syntax & RE_DOT_NOT_NULL)))
- return 0;
+ return false;
break;
default:
- return 0;
+ return false;
}
if (node->constraint)
@@ -4014,10 +4036,10 @@ check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
unsigned int context = re_string_context_at (&mctx->input, idx,
mctx->eflags);
if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
- return 0;
+ return false;
}
- return 1;
+ return true;
}
/* Extend the buffers, if the buffers have run out. */
@@ -4030,10 +4052,11 @@ extend_buffers (re_match_context_t *mctx, int min_len)
re_string_t *pstr = &mctx->input;
/* Avoid overflow. */
- if (BE (INT_MAX / 2 / sizeof (re_dfastate_t *) <= pstr->bufs_len, 0))
+ if (BE (MIN (IDX_MAX, SIZE_MAX / sizeof (re_dfastate_t *)) / 2
+ <= pstr->bufs_len, 0))
return REG_ESPACE;
- /* Double the lengthes of the buffers, but allocate at least MIN_LEN. */
+ /* Double the lengths of the buffers, but allocate at least MIN_LEN. */
ret = re_string_realloc_buffers (pstr,
MAX (min_len,
MIN (pstr->len, pstr->bufs_len * 2)));
@@ -4089,12 +4112,19 @@ extend_buffers (re_match_context_t *mctx, int min_len)
static reg_errcode_t
__attribute_warn_unused_result__
-match_ctx_init (re_match_context_t *mctx, int eflags, int n)
+match_ctx_init (re_match_context_t *mctx, int eflags, Idx n)
{
mctx->eflags = eflags;
mctx->match_last = -1;
if (n > 0)
{
+ /* Avoid overflow. */
+ size_t max_object_size =
+ MAX (sizeof (struct re_backref_cache_entry),
+ sizeof (re_sub_match_top_t *));
+ if (BE (MIN (IDX_MAX, SIZE_MAX / max_object_size) < n, 0))
+ return REG_ESPACE;
+
mctx->bkref_ents = re_malloc (struct re_backref_cache_entry, n);
mctx->sub_tops = re_malloc (re_sub_match_top_t *, n);
if (BE (mctx->bkref_ents == NULL || mctx->sub_tops == NULL, 0))
@@ -4118,10 +4148,10 @@ match_ctx_init (re_match_context_t *mctx, int eflags, int n)
static void
match_ctx_clean (re_match_context_t *mctx)
{
- int st_idx;
+ Idx st_idx;
for (st_idx = 0; st_idx < mctx->nsub_tops; ++st_idx)
{
- int sl_idx;
+ Idx sl_idx;
re_sub_match_top_t *top = mctx->sub_tops[st_idx];
for (sl_idx = 0; sl_idx < top->nlasts; ++sl_idx)
{
@@ -4135,7 +4165,7 @@ match_ctx_clean (re_match_context_t *mctx)
re_free (top->path->array);
re_free (top->path);
}
- free (top);
+ re_free (top);
}
mctx->nsub_tops = 0;
@@ -4160,8 +4190,8 @@ match_ctx_free (re_match_context_t *mctx)
static reg_errcode_t
__attribute_warn_unused_result__
-match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx, int from,
- int to)
+match_ctx_add_entry (re_match_context_t *mctx, Idx node, Idx str_idx, Idx from,
+ Idx to)
{
if (mctx->nbkref_ents >= mctx->abkref_ents)
{
@@ -4196,7 +4226,7 @@ match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx, int from,
A backreference does not epsilon-transition unless it is empty, so set
to all zeros if FROM != TO. */
mctx->bkref_ents[mctx->nbkref_ents].eps_reachable_subexps_map
- = (from == to ? ~0 : 0);
+ = (from == to ? -1 : 0);
mctx->bkref_ents[mctx->nbkref_ents++].more = 0;
if (mctx->max_mb_elem_len < to - from)
@@ -4204,13 +4234,13 @@ match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx, int from,
return REG_NOERROR;
}
-/* Search for the first entry which has the same str_idx, or -1 if none is
+/* Return the first entry with the same str_idx, or -1 if none is
found. Note that MCTX->BKREF_ENTS is already sorted by MCTX->STR_IDX. */
-static int
-search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
+static Idx
+search_cur_bkref_entry (const re_match_context_t *mctx, Idx str_idx)
{
- int left, right, mid, last;
+ Idx left, right, mid, last;
last = right = mctx->nbkref_ents;
for (left = 0; left < right;)
{
@@ -4231,7 +4261,7 @@ search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
static reg_errcode_t
__attribute_warn_unused_result__
-match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
+match_ctx_add_subtop (re_match_context_t *mctx, Idx node, Idx str_idx)
{
#ifdef DEBUG
assert (mctx->sub_tops != NULL);
@@ -4239,7 +4269,7 @@ match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
#endif
if (BE (mctx->nsub_tops == mctx->asub_tops, 0))
{
- int new_asub_tops = mctx->asub_tops * 2;
+ Idx new_asub_tops = mctx->asub_tops * 2;
re_sub_match_top_t **new_array = re_realloc (mctx->sub_tops,
re_sub_match_top_t *,
new_asub_tops);
@@ -4260,12 +4290,12 @@ match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP. */
static re_sub_match_last_t *
-match_ctx_add_sublast (re_sub_match_top_t *subtop, int node, int str_idx)
+match_ctx_add_sublast (re_sub_match_top_t *subtop, Idx node, Idx str_idx)
{
re_sub_match_last_t *new_entry;
if (BE (subtop->nlasts == subtop->alasts, 0))
{
- int new_alasts = 2 * subtop->alasts + 1;
+ Idx new_alasts = 2 * subtop->alasts + 1;
re_sub_match_last_t **new_array = re_realloc (subtop->lasts,
re_sub_match_last_t *,
new_alasts);
@@ -4287,7 +4317,7 @@ match_ctx_add_sublast (re_sub_match_top_t *subtop, int node, int str_idx)
static void
sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
- re_dfastate_t **limited_sts, int last_node, int last_str_idx)
+ re_dfastate_t **limited_sts, Idx last_node, Idx last_str_idx)
{
sctx->sifted_states = sifted_sts;
sctx->limited_states = limited_sts;
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 11:55:52 +0000