1 /* Copyright (C) 1996-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.org>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
25 #include <wcsmbsload.h>
30 # define EILSEQ EINVAL
34 /* This is the private state used if PS is NULL. */
35 static mbstate_t state;
38 __wcsrtombs (dst, src, len, ps)
44 struct __gconv_step_data data;
47 struct __gconv_step *tomb;
48 const struct gconv_fcts *fcts;
50 /* Tell where we want the result. */
51 data.__invocation_counter = 0;
52 data.__internal_use = 1;
53 data.__flags = __GCONV_IS_LAST;
54 data.__statep = ps ?: &state;
56 /* Get the conversion functions. */
57 fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
59 /* Get the structure with the function pointers. */
61 __gconv_fct fct = tomb->__fct;
63 if (tomb->__shlib_handle != NULL)
67 /* We have to handle DST == NULL special. */
71 unsigned char buf[256]; /* Just an arbitrary value. */
72 const wchar_t *srcend = *src + __wcslen (*src) + 1;
73 const unsigned char *inbuf = (const unsigned char *) *src;
76 temp_state = *data.__statep;
77 data.__statep = &temp_state;
80 data.__outbufend = buf + sizeof (buf);
86 status = DL_CALL_FCT (fct, (tomb, &data, &inbuf,
87 (const unsigned char *) srcend, NULL,
90 /* Count the number of bytes. */
91 result += data.__outbuf - buf;
93 while (status == __GCONV_FULL_OUTPUT);
95 if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
97 /* There better should be a NUL byte at the end. */
98 assert (data.__outbuf[-1] == '\0');
99 /* Don't count the NUL character in. */
105 /* This code is based on the safe assumption that all internal
106 multi-byte encodings use the NUL byte only to mark the end
108 const wchar_t *srcend = *src + __wcsnlen (*src, len) + 1;
111 data.__outbuf = (unsigned char *) dst;
112 data.__outbufend = (unsigned char *) dst + len;
114 status = DL_CALL_FCT (fct, (tomb, &data, (const unsigned char **) src,
115 (const unsigned char *) srcend, NULL,
118 /* Count the number of bytes. */
119 result = data.__outbuf - (unsigned char *) dst;
121 /* We have to determine whether the last character converted
122 is the NUL character. */
123 if ((status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
124 && data.__outbuf[-1] == '\0')
126 assert (data.__outbuf != (unsigned char *) dst);
127 assert (__mbsinit (data.__statep));
133 /* There must not be any problems with the conversion but illegal input
135 assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
136 || status == __GCONV_ILLEGAL_INPUT
137 || status == __GCONV_INCOMPLETE_INPUT
138 || status == __GCONV_FULL_OUTPUT);
140 if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT
141 && status != __GCONV_EMPTY_INPUT)
143 result = (size_t) -1;
144 __set_errno (EILSEQ);
149 weak_alias (__wcsrtombs, wcsrtombs)