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568035b7 | 1 | /* Copyright (C) 1996-2013 Free Software Foundation, Inc. |
33a934a3 | 2 | This file is part of the GNU C Library. |
d64b6ad0 | 3 | Contributed by Ulrich Drepper <drepper@gnu.org>, 1996. |
33a934a3 UD |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
33a934a3 UD |
9 | |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
33a934a3 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
30de3b18 | 18 | |
915a6c51 | 19 | #include <assert.h> |
55985355 | 20 | #include <dlfcn.h> |
30de3b18 | 21 | #include <errno.h> |
4bca4c17 UD |
22 | #include <stdlib.h> |
23 | #include <gconv.h> | |
30de3b18 | 24 | #include <wchar.h> |
4bca4c17 UD |
25 | #include <wcsmbsload.h> |
26 | ||
915a6c51 | 27 | #include <sysdep.h> |
30de3b18 | 28 | |
80bcb410 | 29 | #ifndef EILSEQ |
4bca4c17 | 30 | # define EILSEQ EINVAL |
80bcb410 RM |
31 | #endif |
32 | ||
30de3b18 | 33 | |
4bca4c17 UD |
34 | /* This is the private state used if PS is NULL. */ |
35 | static mbstate_t state; | |
6dbe2837 | 36 | |
30de3b18 | 37 | size_t |
23396375 | 38 | __wcsrtombs (dst, src, len, ps) |
30de3b18 RM |
39 | char *dst; |
40 | const wchar_t **src; | |
41 | size_t len; | |
42 | mbstate_t *ps; | |
43 | { | |
d64b6ad0 | 44 | struct __gconv_step_data data; |
4bca4c17 | 45 | int status; |
23f0c99c | 46 | size_t result; |
d64b6ad0 | 47 | struct __gconv_step *tomb; |
96310297 | 48 | const struct gconv_fcts *fcts; |
30de3b18 | 49 | |
4bca4c17 | 50 | /* Tell where we want the result. */ |
d64b6ad0 UD |
51 | data.__invocation_counter = 0; |
52 | data.__internal_use = 1; | |
85830c4c | 53 | data.__flags = __GCONV_IS_LAST; |
d64b6ad0 | 54 | data.__statep = ps ?: &state; |
d6204268 | 55 | data.__trans = NULL; |
6dbe2837 | 56 | |
96310297 RM |
57 | /* Get the conversion functions. */ |
58 | fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); | |
30de3b18 | 59 | |
d64b6ad0 | 60 | /* Get the structure with the function pointers. */ |
96310297 | 61 | tomb = fcts->tomb; |
915a6c51 UD |
62 | __gconv_fct fct = tomb->__fct; |
63 | #ifdef PTR_DEMANGLE | |
64 | if (tomb->__shlib_handle != NULL) | |
65 | PTR_DEMANGLE (fct); | |
66 | #endif | |
d64b6ad0 | 67 | |
4bca4c17 UD |
68 | /* We have to handle DST == NULL special. */ |
69 | if (dst == NULL) | |
30de3b18 | 70 | { |
6a07e1f8 | 71 | mbstate_t temp_state; |
b117f744 | 72 | unsigned char buf[256]; /* Just an arbitrary value. */ |
8619129f | 73 | const wchar_t *srcend = *src + __wcslen (*src) + 1; |
9c7ff11a | 74 | const unsigned char *inbuf = (const unsigned char *) *src; |
23f0c99c | 75 | size_t dummy; |
f4017d20 | 76 | |
6a07e1f8 UD |
77 | temp_state = *data.__statep; |
78 | data.__statep = &temp_state; | |
79 | ||
23f0c99c | 80 | result = 0; |
d64b6ad0 | 81 | data.__outbufend = buf + sizeof (buf); |
07a4742f | 82 | |
4bca4c17 | 83 | do |
d079f321 | 84 | { |
d64b6ad0 | 85 | data.__outbuf = buf; |
d079f321 | 86 | |
915a6c51 UD |
87 | status = DL_CALL_FCT (fct, (tomb, &data, &inbuf, |
88 | (const unsigned char *) srcend, NULL, | |
89 | &dummy, 0, 1)); | |
23f0c99c UD |
90 | |
91 | /* Count the number of bytes. */ | |
d64b6ad0 | 92 | result += data.__outbuf - buf; |
d079f321 | 93 | } |
d64b6ad0 | 94 | while (status == __GCONV_FULL_OUTPUT); |
30de3b18 | 95 | |
d64b6ad0 | 96 | if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT) |
d079f321 UD |
97 | { |
98 | /* There better should be a NUL byte at the end. */ | |
d64b6ad0 | 99 | assert (data.__outbuf[-1] == '\0'); |
d079f321 UD |
100 | /* Don't count the NUL character in. */ |
101 | --result; | |
102 | } | |
4bca4c17 UD |
103 | } |
104 | else | |
105 | { | |
106 | /* This code is based on the safe assumption that all internal | |
107 | multi-byte encodings use the NUL byte only to mark the end | |
108 | of the string. */ | |
b8a423c2 | 109 | const wchar_t *srcend = *src + __wcsnlen (*src, len) + 1; |
23f0c99c | 110 | size_t dummy; |
4bca4c17 | 111 | |
1c99f950 UD |
112 | data.__outbuf = (unsigned char *) dst; |
113 | data.__outbufend = (unsigned char *) dst + len; | |
4bca4c17 | 114 | |
915a6c51 UD |
115 | status = DL_CALL_FCT (fct, (tomb, &data, (const unsigned char **) src, |
116 | (const unsigned char *) srcend, NULL, | |
117 | &dummy, 0, 1)); | |
23f0c99c UD |
118 | |
119 | /* Count the number of bytes. */ | |
d64b6ad0 | 120 | result = data.__outbuf - (unsigned char *) dst; |
4bca4c17 UD |
121 | |
122 | /* We have to determine whether the last character converted | |
123 | is the NUL character. */ | |
376b8b3d | 124 | if ((status == __GCONV_OK || status == __GCONV_EMPTY_INPUT) |
d64b6ad0 | 125 | && data.__outbuf[-1] == '\0') |
07a4742f | 126 | { |
d64b6ad0 UD |
127 | assert (data.__outbuf != (unsigned char *) dst); |
128 | assert (__mbsinit (data.__statep)); | |
07a4742f | 129 | *src = NULL; |
4bca4c17 | 130 | --result; |
07a4742f | 131 | } |
30de3b18 RM |
132 | } |
133 | ||
4bca4c17 UD |
134 | /* There must not be any problems with the conversion but illegal input |
135 | characters. */ | |
d64b6ad0 UD |
136 | assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT |
137 | || status == __GCONV_ILLEGAL_INPUT | |
138 | || status == __GCONV_INCOMPLETE_INPUT | |
139 | || status == __GCONV_FULL_OUTPUT); | |
07a4742f | 140 | |
d64b6ad0 UD |
141 | if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT |
142 | && status != __GCONV_EMPTY_INPUT) | |
4bca4c17 UD |
143 | { |
144 | result = (size_t) -1; | |
145 | __set_errno (EILSEQ); | |
146 | } | |
f4017d20 | 147 | |
4bca4c17 | 148 | return result; |
30de3b18 | 149 | } |
23396375 | 150 | weak_alias (__wcsrtombs, wcsrtombs) |