/* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@gnu.org>, 1996. 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <dlfcn.h> #include <errno.h> #include <stdlib.h> #include <gconv.h> #include <wchar.h> #include <wcsmbsload.h> #include <assert.h> #ifndef EILSEQ # define EILSEQ EINVAL #endif /* This is the private state used if PS is NULL. */ static mbstate_t state; size_t __wcsrtombs (dst, src, len, ps) char *dst; const wchar_t **src; size_t len; mbstate_t *ps; { struct __gconv_step_data data; int status; size_t result; struct __gconv_step *tomb; /* Tell where we want the result. */ data.__invocation_counter = 0; data.__internal_use = 1; data.__flags = __GCONV_IS_LAST; data.__statep = ps ?: &state; data.__trans = NULL; /* Make sure we use the correct function. */ update_conversion_ptrs (); /* Get the structure with the function pointers. */ tomb = __wcsmbs_gconv_fcts.tomb; /* We have to handle DST == NULL special. */ if (dst == NULL) { mbstate_t temp_state; unsigned char buf[256]; /* Just an arbitrary value. */ const wchar_t *srcend = *src + __wcslen (*src) + 1; const wchar_t *inbuf = *src; size_t dummy; temp_state = *data.__statep; data.__statep = &temp_state; result = 0; data.__outbufend = buf + sizeof (buf); do { data.__outbuf = buf; status = DL_CALL_FCT (tomb->__fct, (tomb, &data, (const unsigned char **) &inbuf, (const unsigned char *) srcend, NULL, &dummy, 0, 1)); /* Count the number of bytes. */ result += data.__outbuf - buf; } while (status == __GCONV_FULL_OUTPUT); if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT) { /* There better should be a NUL byte at the end. */ assert (data.__outbuf[-1] == '\0'); /* Don't count the NUL character in. */ --result; } } else { /* This code is based on the safe assumption that all internal multi-byte encodings use the NUL byte only to mark the end of the string. */ const wchar_t *srcend = *src + __wcsnlen (*src, len) + 1; size_t dummy; data.__outbuf = dst; data.__outbufend = dst + len; status = DL_CALL_FCT (tomb->__fct, (tomb, &data, (const unsigned char **) src, (const unsigned char *) srcend, NULL, &dummy, 0, 1)); /* Count the number of bytes. */ result = data.__outbuf - (unsigned char *) dst; /* We have to determine whether the last character converted is the NUL character. */ if ((status == __GCONV_OK || status == __GCONV_EMPTY_INPUT) && data.__outbuf[-1] == '\0') { assert (data.__outbuf != (unsigned char *) dst); assert (__mbsinit (data.__statep)); *src = NULL; --result; } } /* There must not be any problems with the conversion but illegal input characters. */ assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT || status == __GCONV_ILLEGAL_INPUT || status == __GCONV_INCOMPLETE_INPUT || status == __GCONV_FULL_OUTPUT); if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT && status != __GCONV_EMPTY_INPUT) { result = (size_t) -1; __set_errno (EILSEQ); } return result; } weak_alias (__wcsrtombs, wcsrtombs)