From d620426811688301eb1cbe6e63773d6430b2706e Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 19 Jun 2000 21:12:06 +0000 Subject: Update. 2000-06-19 Ulrich Drepper * iconv/gconv.h (__gconv_trans_fct): Add new parameter. General namespace cleanup. (struct __gconv_trans_data): Add next field. (struct __gconv_step_data): Make __trans a pointer. * iconv/gconv_conf.c: Split out code to find gconv directories from __gconv_read_conf in new functions. * iconv/gconv_int.h: Define new data structure and declare new functions for handling of gconv directory list. * iconv/gconv_open.c: Allow more than one error handling step being used. Call function to load error handling module if it is none of the builtin transformations. * iconv/gconv_close.c: Add code to free transliteration data. * iconv/gconv_trans.c: Add functions to load and unload modules implementing transliteration etc. * iconv/skeleton.c: Call all context functions now that more than one module is allowed. * iconv/loop.c (STANDARD_ERR_HANDLING): New macro. * iconv/gconv_simple.c: Use STANDARD_ERR_HANDLING macro for places where the full error handling using transliteration is needed. * iconvdata/8bit-gap.c: Likewise. * iconvdata/8bit-generic.c: Likewise. * iconvdata/ansi_x3.110.c: Likewise. * iconvdata/big5.c: Likewise. * iconvdata/big5hkscs.c: Likewise. * iconvdata/euc-cn.c: Likewise. * iconvdata/euc-jp.c: Likewise. * iconvdata/euc-kr.c: Likewise. * iconvdata/euc-tw.c: Likewise. * iconvdata/gbgbk.c: Likewise. * iconvdata/gbk.c: Likewise. * iconvdata/iso-2022-cn.c: Likewise. * iconvdata/iso-2022-jp.c: Likewise. * iconvdata/iso-2022-kr.c: Likewise. * iconvdata/iso646.c: Likewise. * iconvdata/iso8859-1.c: Likewise. * iconvdata/iso_6937-2.c: Likewise. * iconvdata/iso_6937.c: Likewise. * iconvdata/johab.c: Likewise. * iconvdata/sjis.c: Likewise. * iconvdata/t.61.c: Likewise. * iconvdata/uhc.c: Likewise. * iconvdata/unicode.c: Likewise. * iconvdata/utf-16.c: Likewise. * libio/iofwide.c: Reset __trans member of __gconv_trans_data structure correctly after last change. * wcsmbs/btowc.c: Likewise. * wcsmbs/mbrtowc.c: Likewise. * wcsmbs/mbsnrtowcs.c: Likewise. * wcsmbs/mbsrtowcs.c: Likewise. * wcsmbs/wcrtomb.c: Likewise. * wcsmbs/wcsnrtombs.c: Likewise. * wcsmbs/wcsrtombs.c: Likewise. * wcsmbs/wctob.c: Likewise. * localedata/Makefile: Set -Wno-format for some files since gcc does not know all the format specifiers. 2000-06-18 Ulrich Drepper * locale/loadlocale.c (_nl_unload_locale): Remove a bit of unneeded code. * locale/lc-time.c (_nl_init_era_entries): Likewise. --- iconv/gconv_conf.c | 153 +++++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 124 insertions(+), 29 deletions(-) (limited to 'iconv/gconv_conf.c') diff --git a/iconv/gconv_conf.c b/iconv/gconv_conf.c index 0d25c22416..480b459134 100644 --- a/iconv/gconv_conf.c +++ b/iconv/gconv_conf.c @@ -1,5 +1,5 @@ /* Handle configuration data. - Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. + Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1997. @@ -18,6 +18,7 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include #include #include #include @@ -34,6 +35,14 @@ /* This is the default path where we look for module lists. */ static const char default_gconv_path[] = GCONV_PATH; +/* The path element in use. */ +const struct path_elem *__gconv_path_elem; +/* Maximum length of a single path element. */ +size_t __gconv_max_path_elem_len; + +/* We use the following struct if we couldn't allocate memory. */ +static const struct path_elem empty_path_elem; + /* Name of the file containing the module information in the directories along the path. */ static const char gconv_conf_filename[] = "gconv-modules"; @@ -497,48 +506,125 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len, /* Otherwise ignore the line. */ } - if (line != NULL) - free (line); + free (line); + fclose (fp); } +/* Determine the directories we are looking for data in. */ +void +__gconv_get_path (void) +{ + struct path_elem *result; + __libc_lock_define_initialized (static, lock); + + __libc_lock_lock (lock); + + /* Make sure there wasn't a second thread doing it already. */ + result = (struct path_elem *) __gconv_path_elem; + if (result == NULL) + { + /* Determine the complete path first. */ + const char *user_path; + char *gconv_path; + size_t gconv_path_len; + char *elem; + char *oldp; + char *cp; + int nelems; + + user_path = __secure_getenv ("GCONV_PATH"); + if (user_path == NULL) + { + /* No user-defined path. Make a modifiable copy of the + default path. */ + gconv_path = strdupa (default_gconv_path); + gconv_path_len = sizeof (default_gconv_path); + } + else + { + /* Append the default path to the user-defined path. */ + size_t user_len = strlen (user_path); + + gconv_path_len = user_len + 1 + sizeof (default_gconv_path); + gconv_path = alloca (gconv_path_len); + __mempcpy (__mempcpy (__mempcpy (gconv_path, user_path, user_len), + ":", 1), + default_gconv_path, sizeof (default_gconv_path)); + } + + /* In a first pass we calculate the number of elements. */ + oldp = NULL; + cp = strchr (gconv_path, ':'); + nelems = 1; + while (cp != NULL) + { + if (cp != oldp + 1) + ++nelems; + oldp = cp; + cp = strchr (cp + 1, ':'); + } + + /* Allocate the memory for the result. */ + result = (struct path_elem *) malloc ((nelems + 1) + * sizeof (struct path_elem) + + gconv_path_len + nelems); + if (result != NULL) + { + char *strspace = (char *) &result[nelems + 1]; + int n = 0; + + /* Separate the individual parts. */ + __gconv_max_path_elem_len = 0; + elem = __strtok_r (gconv_path, ":", &gconv_path); + assert (elem != NULL); + do + { + result[n].name = strspace; + strspace = __stpcpy (strspace, elem); + if (strspace[-1] != '/') + *strspace++ = '/'; + + result[n].len = strspace - result[n].name; + if (result[n].len > __gconv_max_path_elem_len) + __gconv_max_path_elem_len = result[n].len; + + *strspace++ = '\0'; + ++n; + } + while ((elem = __strtok_r (NULL, ":", &gconv_path)) != NULL); + + result[n].name = NULL; + result[n].len = 0; + } + + __gconv_path_elem = result ?: &empty_path_elem; + } + + __libc_lock_unlock (lock); +} + + /* Read all configuration files found in the user-specified and the default path. */ void __gconv_read_conf (void) { - const char *user_path = __secure_getenv ("GCONV_PATH"); - char *gconv_path, *elem; void *modules = NULL; size_t nmodules = 0; int save_errno = errno; size_t cnt; - if (user_path == NULL) - /* No user-defined path. Make a modifiable copy of the default path. */ - gconv_path = strdupa (default_gconv_path); - else - { - /* Append the default path to the user-defined path. */ - size_t user_len = strlen (user_path); - - gconv_path = alloca (user_len + 1 + sizeof (default_gconv_path)); - __mempcpy (__mempcpy (__mempcpy (gconv_path, user_path, user_len), - ":", 1), - default_gconv_path, sizeof (default_gconv_path)); - } + /* Find out where we have to look. */ + if (__gconv_path_elem == NULL) + __gconv_get_path (); - elem = __strtok_r (gconv_path, ":", &gconv_path); - while (elem != NULL) + for (cnt = 0; __gconv_path_elem[cnt].name != NULL; ++cnt) { -#ifndef MAXPATHLEN - /* We define a reasonable limit. */ -# define MAXPATHLEN 4096 -#endif - char real_elem[MAXPATHLEN]; + char real_elem[__gconv_max_path_elem_len + sizeof (gconv_conf_filename)]; - if (__realpath (elem, real_elem) != NULL) + if (__realpath (__gconv_path_elem[cnt].name, real_elem) != NULL) { size_t elem_len = strlen (real_elem); char *filename; @@ -551,9 +637,6 @@ __gconv_read_conf (void) /* Read the next configuration file. */ read_conf_file (filename, real_elem, elem_len, &modules, &nmodules); } - - /* Get next element in the path. */ - elem = __strtok_r (NULL, ":", &gconv_path); } /* Add the internal modules. */ @@ -586,3 +669,15 @@ __gconv_read_conf (void) /* Restore the error number. */ __set_errno (save_errno); } + + + +/* Free all resources if necessary. */ +static void __attribute__ ((unused)) +free_mem (void) +{ + if (__gconv_path_elem != NULL && __gconv_path_elem != &empty_path_elem) + free ((void *) __gconv_path_elem); +} + +text_set_element (__libc_subfreeres, free_mem); -- cgit v1.2.3