summaryrefslogtreecommitdiff
path: root/wcsmbs/mbrtowc.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-04-07 09:21:28 +0000
committerUlrich Drepper <drepper@redhat.com>1998-04-07 09:21:28 +0000
commit4bca4c174852bfc348f99e85684fc8f65631d125 (patch)
treea5779cb83844d32d94557e4b8613278d7d877c9b /wcsmbs/mbrtowc.c
parent91641c65220646ae2ad8b4ec6972adc7e6720d36 (diff)
downloadglibc-4bca4c174852bfc348f99e85684fc8f65631d125.tar.gz
Update.
1998-04-07 08:51 Ulrich Drepper <drepper@cygnus.com> * iconv/gconv.c: Take care for NULL arguments. * iconv/gconv_dl.c: Make find_func function global. * iconv/gconv_int.h: Add prototype for __gconv_find_func. Add prototypes for ASCII conversion functions. * iconv/gconv_simple.c: Add ASCII conversion functions. * locale/C-ctype.c: Correct charset name. * wcsmbs/Makefile (distribute): Add wcsmbsload.h. (routines): Remove wmemrtowcs and wmemrtombs, add wcsnlen and wcsmbsload. * wcsmbs/btowc.c: Rewrite to use iconv functionality. * 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. * wcsmbs/wchar.h: Add prototype for __wcslen, wcsnlen. Remove prototypes for wmemr*. * wcsmbs/wcslen.c: Rename to __wcslen and make wcslen weak alias. * wcsmbs/wcsnlen.c: New file. * wcsmbs/wcsmbsload.c: New file. * wcsmbs/wcsmbsload.h: New file. * manual/filesys.texi: Mention risks of tmpnam and mktemp. * manual/install.texi: Describe some more critical points. * string/string.h: Add prototype for __strnlen. * string/strnlen.c: Rename to __strnlen and make strnlen weak alias. * sysdeps/posix/mktemp.c: Rewrite to allow many more files and much less predictable names. * sysdeps/posix/mkstemp.c: Likewise. 1998-04-05 Andreas Jaeger <aj@arthur.rhein-neckar.de> * manual/libc.texinfo (Top): Change "file namespace" to "local namespace". * manual/socket.texi: Change file namespace to local namespace. (Out-of-Band Data): Remove unneeded variable link. (Host Address Functions): Use uint32_t consequently and add a number of clarifications for IPv4/IPv6, classless addresses. (Internet Namespace): Added some paragraphs about IPv6. Based on suggestions by Francesco Potorti` <F.Potorti@cnuce.cnr.it>. 1998-04-05 Philip Blundell <Philip.Blundell@pobox.com> Update for draft-ietf-ipngwg-bsd-api-new-01.txt: * resolv/netdb.h (getnameinfo): Use `socklen_t' not `size_t'. (NI_NUMERICHOST, et al.): Tidy up and add comments. (AI_NUMERICHOST): Define. (getnodebyname): New prototype. (AI_V4MAPPED, et al.): New constants. * sysdeps/unix/bsd/bsd4.4/bits/sockaddr.h (SA_LEN): New macro.< * sysdeps/generic/bits/sockaddr.h (SA_LEN): Likewise. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add sa_len for socket. * sysdeps/unix/sysv/linux/sa_len.c: New file. * sysdeps/unix/sysv/linux/Dist: Add sa_len.c. * sysdeps/unix/sysv/linux/bits/socket.h: Make multiple #inclusion safe. * sysdeps/generic/bits/sockunion.h: New file, defining sockaddr_union. * sysdeps/unix/sysv/linux/bits/sockunion.h: Likewise. * socket/Makefile (headers): Add bits/sockunion.h. * socket/sys/socket.h: Include <bits/sockunion.h> * inet/netinet/in.h: Include <bits/sockaddr.h> rather than <sys/socket.h>, to avoid getting sockaddr_union defined. * sysdeps/generic/bits/socket.h: Allow inclusion from netinet.in.h. * sysdeps/unix/sysv/linux/bits/socket.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/socket.h: Likewise. * sysdeps/unix/sysv/linux/if_index.c: Remove use of SIOCGIFCOUNT (2.2.x kernels won't have it). 1998-04-06 21:21 Ulrich Drepper <drepper@cygnus.com> * sysdeps/mach/hurd/bits/ioctls.h: Allow inclusion from hurd/ioctl.h. * sysdeps/mach/hurd/dl-sysdep.c: Use __ptr_t not caddr_t. * iconv/gconv_conf.c: Define MAXPATHLEN if not available before. Patches by UCHIYAMA Yasushi <uch@nop.or.jp>. 1998-04-05 Philip Blundell <Philip.Blundell@pobox.com> * manual/socket.texi (Socket Addresses): Fix a typo. (Interface Naming): New section. 1998-04-05 23:29 Zack Weinberg <zack@rabi.phys.columbia.edu> * configure.in: Check for CC using $ac_tool_prefix, to handle cross-compilation. Use AC_CHECK_TOOL to find MiG. * config.make.in: Add MIG to be substituted. * mach/Machrules: Don't define MIG variable. Patch by Gordon Matzigkeit <gord@profitpress.com>. 1998-04-05 Mark Kettenis <kettenis@phys.uva.nl> * elf/dl-load.c (decompose_rpath): Use local_strdup instead of strdupa to copy rpath. 1998-04-05 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in: Fix gcc version check. * aclocal.m4 (AC_PROG_CHECK_VER): Rewritten to make less confusing. 1998-04-05 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in: Fix gcc version check. * aclocal.m4 (AC_PROG_CHECK_VER): Rewritten to make less confusing. 1998-04-05 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * configure.in: Fix gcc version check. * aclocal.m4 (AC_PROG_CHECK_VER): Rewritten to make less confusing. 1998-03-31 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/unix/bsd/unlockpt.c (unlockpt): Call __ptsname_r instead of ptsname_r. * stdlib/stdlib.h: Change prototype of ptsname_r to make it more like ttyname_r. * sysdeps/unix/sysv/linux/ptsname.c (__ptsname_r): Likewise. * sysdeps/generic/ptsname.c (__ptsname_r): Likewise. * sysdeps/unix/grantpt.c (grantpt): Change check of return value of __ptsname_r accordingly. * login/openpty.c (openpty): Likewise. 1998-06-04 18:47 H.J. Lu <hjl@gnu.org> * libio/fileops.c (_IO_file_xsgetn): Adjust pointers. 1998-04-06 13:58 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makeconfig (libtypes): Redo H.J. Lu's change of 1998-03-27. * Makerules: Readd missing rule for $(objpfx)stamp.oS. 1998-04-06 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/ypclnt.c: Don't give YPERR_RPC back, use the do_ypcall return value for better error checking.
Diffstat (limited to 'wcsmbs/mbrtowc.c')
-rw-r--r--wcsmbs/mbrtowc.c144
1 files changed, 54 insertions, 90 deletions
diff --git a/wcsmbs/mbrtowc.c b/wcsmbs/mbrtowc.c
index cf0bbd6ce2..99bc5a4797 100644
--- a/wcsmbs/mbrtowc.c
+++ b/wcsmbs/mbrtowc.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
@@ -18,113 +18,77 @@
Boston, MA 02111-1307, USA. */
#include <errno.h>
+#include <gconv.h>
#include <wchar.h>
+#include <wcsmbsload.h>
+
+#include <assert.h>
#ifndef EILSEQ
-#define EILSEQ EINVAL
+# define EILSEQ EINVAL
#endif
-static mbstate_t internal;
+/* This is the private state used if PS is NULL. */
+static mbstate_t state;
size_t
__mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
{
- size_t used = 0;
-
- if (ps == NULL)
- ps = &internal;
-
+ wchar_t buf[1];
+ struct gconv_step_data data;
+ size_t inbytes;
+ int status;
+ size_t result;
+
+ /* Tell where we want the result. */
+ data.outbuf = (char *) (pwc ?: buf);
+ data.outbufavail = 0;
+ data.outbufsize = sizeof (wchar_t);
+ data.is_last = 1;
+ data.statep = ps ?: &state;
+
+ /* A first special case is if S is NULL. This means put PS in the
+ initial state. */
if (s == NULL)
{
- /* See first paragraph of description in 7.16.6.3.2. */
- ps->count = 0;
- return 0;
+ data.outbuf = (char *) buf;
+ s = "";
+ n = 1;
}
- if (n > 0)
- {
- if (ps->count == 0)
- {
- unsigned char byte = (unsigned char) *s++;
- ++used;
-
- /* We must look for a possible first byte of a UTF8 sequence. */
- if (byte < 0x80)
- {
- /* One byte sequence. */
- if (pwc != NULL)
- *pwc = (wchar_t) byte;
- return byte ? used : 0;
- }
-
- if ((byte & 0xc0) == 0x80 || (byte & 0xfe) == 0xfe)
- {
- /* Oh, oh. An encoding error. */
- __set_errno (EILSEQ);
- return (size_t) -1;
- }
-
- if ((byte & 0xe0) == 0xc0)
- {
- /* We expect two bytes. */
- ps->count = 1;
- ps->value = byte & 0x1f;
- }
- else if ((byte & 0xf0) == 0xe0)
- {
- /* We expect three bytes. */
- ps->count = 2;
- ps->value = byte & 0x0f;
- }
- else if ((byte & 0xf8) == 0xf0)
- {
- /* We expect four bytes. */
- ps->count = 3;
- ps->value = byte & 0x07;
- }
- else if ((byte & 0xfc) == 0xf8)
- {
- /* We expect five bytes. */
- ps->count = 4;
- ps->value = byte & 0x03;
- }
- else
- {
- /* We expect six bytes. */
- ps->count = 5;
- ps->value = byte & 0x01;
- }
- }
+ /* Make sure we use the correct function. */
+ update_conversion_ptrs ();
- /* We know we have to handle a multibyte character and there are
- some more bytes to read. */
- while (used < n)
+ /* Do a normal conversion. */
+ inbytes = n;
+ status = (*__wcsmbs_gconv_fcts.towc->fct) (__wcsmbs_gconv_fcts.towc,
+ &data, s, &inbytes, NULL, 0);
+
+ /* There must not be any problems with the conversion but illegal input
+ characters. The output buffer must be large enough, otherwise the
+ definition of MB_CUR_MAX is not correct. All the other possible
+ errors also must not happen. */
+ assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
+ || status == GCONV_INCOMPLETE_INPUT);
+
+ if (status == GCONV_OK)
+ {
+ if (*(wchar_t *)data.outbuf == L'\0')
{
- /* The second to sixths byte must be of the form 10xxxxxx. */
- unsigned char byte = (unsigned char) *s++;
- ++used;
-
- if ((byte & 0xc0) != 0x80)
- {
- /* Oh, oh. An encoding error. */
- __set_errno (EILSEQ);
- return (size_t) -1;
- }
-
- ps->value <<= 6;
- ps->value |= byte & 0x3f;
-
- if (--ps->count == 0)
- {
- /* The character is finished. */
- if (pwc != NULL)
- *pwc = (wchar_t) ps->value;
- return ps->value ? used : 0;
- }
+ /* The converted character is the NUL character. */
+ assert (mbsinit (data.statep));
+ result = 0;
}
+ else
+ result = n - inbytes;
+ }
+ else
+ {
+ result = status == GCONV_INCOMPLETE_INPUT ? (size_t) -2 : (size_t) -1;
+ __set_errno (EILSEQ);
}
- return (size_t) -2;
+ return result;
}
weak_alias (__mbrtowc, mbrtowc)