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authorUlrich Drepper <drepper@redhat.com>1997-11-24 02:08:40 +0000
committerUlrich Drepper <drepper@redhat.com>1997-11-24 02:08:40 +0000
commite34b0f2902588bbbfaf55829692e32c3c7134b74 (patch)
tree3d74df649b5b0bf80b4f6070e360f405516caec5 /wcsmbs/wmemrtowcs.c
parentf43ce637b5f35b350b4dff6810dd6a7421fbb952 (diff)
1997-11-24 03:01 Ulrich Drepper <drepper@cygnus.com> * elf/dl-support.c: Call __libc_init_secure to make sure __libc_enable_secure is defined early. * sysdeps/generic/enbl-secure.c: Change function name to __libc_init_secure and make it global instead of a constructor. * iconv/gconv.c: Fix lots of bugs. * iconv/gconv.h: Likewise. * iconv/gconv_builtin.h: Likewise. * iconv/gconv_close.c: Likewise. * iconv/gconv_conf.c: Likewise. * iconv/gconv_db.c: Likewise. * iconv/gconv_dl.c: Likewise. * iconv/gconv_open.c: Likewise. * iconv/gconv_simple.c: Likewise. * iconv/iconv.c: Likewise. * iconv/iconv_close.c: Likewise. * iconv/iconv_open.c: Likewise. * wcsmbs/Makefile (routines): Add wmemrtowcs and wmemrtombs. * wcsmbs/wchar.h: Add prototypes for wmemrtowcs and wmemrtombs. * wcsmbs/wmemrtombs.c: New file. * wcsmbs/wmemrtowcs.c: New file.
Diffstat (limited to 'wcsmbs/wmemrtowcs.c')
-rw-r--r--wcsmbs/wmemrtowcs.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/wcsmbs/wmemrtowcs.c b/wcsmbs/wmemrtowcs.c
new file mode 100644
index 0000000000..1686229b8f
--- /dev/null
+++ b/wcsmbs/wmemrtowcs.c
@@ -0,0 +1,134 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.org>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <wchar.h>
+
+#ifndef EILSEQ
+#define EILSEQ EINVAL
+#endif
+
+
+/* We don't need the state really because we don't have shift states
+ to maintain between calls to this function. */
+static mbstate_t internal;
+
+/* This is a non-standard function but it is very useful in the
+ implementation of stdio because we have to deal with unterminated
+ buffers. At most NMC bytes will be converted. */
+size_t
+__wmemrtowcs (dst, src, nmc, len, ps)
+ wchar_t *dst;
+ const char **src;
+ size_t nmc;
+ size_t len;
+ mbstate_t *ps;
+{
+ size_t written = 0;
+ const char *run = *src;
+ const char *last = run + nmc;
+
+ if (ps == NULL)
+ ps = &internal;
+
+ if (dst == NULL)
+ /* The LEN parameter has to be ignored if we don't actually write
+ anything. */
+ len = ~0;
+
+ /* Copy all words. */
+ while (written < len && run < last)
+ {
+ wchar_t value;
+ size_t count;
+ unsigned char byte = *run++;
+
+ /* We expect a start of a new multibyte character. */
+ if (byte < 0x80)
+ {
+ /* One byte sequence. */
+ count = 0;
+ value = byte;
+ }
+ else if ((byte & 0xe0) == 0xc0)
+ {
+ count = 1;
+ value = byte & 0x1f;
+ }
+ else if ((byte & 0xf0) == 0xe0)
+ {
+ /* We expect three bytes. */
+ count = 2;
+ value = byte & 0x0f;
+ }
+ else if ((byte & 0xf8) == 0xf0)
+ {
+ /* We expect four bytes. */
+ count = 3;
+ value = byte & 0x07;
+ }
+ else if ((byte & 0xfc) == 0xf8)
+ {
+ /* We expect five bytes. */
+ count = 4;
+ value = byte & 0x03;
+ }
+ else if ((byte & 0xfe) == 0xfc)
+ {
+ /* We expect six bytes. */
+ count = 5;
+ value = byte & 0x01;
+ }
+ else
+ {
+ /* This is an illegal encoding. */
+ __set_errno (EILSEQ);
+ return (size_t) -1;
+ }
+
+ /* Read the possible remaining bytes. */
+ while (count-- > 0)
+ {
+ byte = *run++;
+
+ if ((byte & 0xc0) != 0x80)
+ {
+ /* This is an illegal encoding. */
+ __set_errno (EILSEQ);
+ return (size_t) -1;
+ }
+
+ value <<= 6;
+ value |= byte & 0x3f;
+ }
+
+ /* Store value is required. */
+ if (dst != NULL)
+ *dst++ = value;
+
+ /* Increment counter of produced words. */
+ ++written;
+ }
+
+ /* Store address of next byte to process. */
+ *src = run;
+
+ return written;
+}
+weak_alias (__wmemrtowcs, wmemrtowcs)