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58548b9d68
In the future, this will result in a compilation failure if the macros are unexpectedly undefined (due to header inclusion ordering or header inclusion missing altogether). Assembler sources are more difficult to convert. In many cases, they are hand-optimized for the mangling and no-mangling variants, which is why they are not converted. sysdeps/s390/s390-32/__longjmp.c and sysdeps/s390/s390-64/__longjmp.c are special: These are C sources, but most of the implementation is in assembler, so the PTR_DEMANGLE macro has to be undefined in some cases, to match the assembler style. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
143 lines
4.0 KiB
C
143 lines
4.0 KiB
C
/* Copyright (C) 1996-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <gconv.h>
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#include <wchar.h>
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#include <wcsmbsload.h>
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#include <pointer_guard.h>
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#ifndef EILSEQ
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# define EILSEQ EINVAL
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#endif
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/* This is the private state used if PS is NULL. */
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static mbstate_t state;
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size_t
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__wcsrtombs (char *dst, const wchar_t **src, size_t len, mbstate_t *ps)
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{
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struct __gconv_step_data data;
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int status;
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size_t result;
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struct __gconv_step *tomb;
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const struct gconv_fcts *fcts;
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/* Tell where we want the result. */
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data.__invocation_counter = 0;
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data.__internal_use = 1;
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data.__flags = __GCONV_IS_LAST;
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data.__statep = ps ?: &state;
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/* Get the conversion functions. */
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fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
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/* Get the structure with the function pointers. */
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tomb = fcts->tomb;
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__gconv_fct fct = tomb->__fct;
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if (tomb->__shlib_handle != NULL)
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PTR_DEMANGLE (fct);
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/* We have to handle DST == NULL special. */
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if (dst == NULL)
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{
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mbstate_t temp_state;
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unsigned char buf[256]; /* Just an arbitrary value. */
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const wchar_t *srcend = *src + __wcslen (*src) + 1;
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const unsigned char *inbuf = (const unsigned char *) *src;
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size_t dummy;
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temp_state = *data.__statep;
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data.__statep = &temp_state;
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result = 0;
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data.__outbufend = buf + sizeof (buf);
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do
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{
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data.__outbuf = buf;
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status = DL_CALL_FCT (fct, (tomb, &data, &inbuf,
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(const unsigned char *) srcend, NULL,
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&dummy, 0, 1));
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/* Count the number of bytes. */
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result += data.__outbuf - buf;
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}
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while (status == __GCONV_FULL_OUTPUT);
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if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
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{
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/* There better should be a NUL byte at the end. */
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assert (data.__outbuf[-1] == '\0');
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/* Don't count the NUL character in. */
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--result;
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}
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}
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else
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{
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/* This code is based on the safe assumption that all internal
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multi-byte encodings use the NUL byte only to mark the end
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of the string. */
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const wchar_t *srcend = *src + __wcsnlen (*src, len) + 1;
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size_t dummy;
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data.__outbuf = (unsigned char *) dst;
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data.__outbufend = (unsigned char *) dst + len;
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status = DL_CALL_FCT (fct, (tomb, &data, (const unsigned char **) src,
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(const unsigned char *) srcend, NULL,
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&dummy, 0, 1));
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/* Count the number of bytes. */
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result = data.__outbuf - (unsigned char *) dst;
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/* We have to determine whether the last character converted
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is the NUL character. */
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if ((status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
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&& data.__outbuf[-1] == '\0')
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{
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assert (data.__outbuf != (unsigned char *) dst);
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assert (__mbsinit (data.__statep));
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*src = NULL;
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--result;
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}
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}
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/* There must not be any problems with the conversion but illegal input
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characters. */
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assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
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|| status == __GCONV_ILLEGAL_INPUT
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|| status == __GCONV_INCOMPLETE_INPUT
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|| status == __GCONV_FULL_OUTPUT);
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if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT
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&& status != __GCONV_EMPTY_INPUT)
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{
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result = (size_t) -1;
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__set_errno (EILSEQ);
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}
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return result;
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}
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weak_alias (__wcsrtombs, wcsrtombs)
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