1 /* Copyright (C) 1996, 1997, 1998, 1999, 2000 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 Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
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
;
49 /* Tell where we want the result. */
50 data
.__invocation_counter
= 0;
51 data
.__internal_use
= 1;
52 data
.__flags
= __GCONV_IS_LAST
;
53 data
.__statep
= ps
?: &state
;
56 /* Make sure we use the correct function. */
57 update_conversion_ptrs ();
59 /* Get the structure with the function pointers. */
60 tomb
= __wcsmbs_gconv_fcts
.tomb
;
62 /* We have to handle DST == NULL special. */
66 unsigned char buf
[256]; /* Just an arbitrary value. */
67 const wchar_t *srcend
= *src
+ __wcslen (*src
) + 1;
68 const wchar_t *inbuf
= *src
;
71 temp_state
= *data
.__statep
;
72 data
.__statep
= &temp_state
;
75 data
.__outbufend
= buf
+ sizeof (buf
);
81 status
= DL_CALL_FCT (tomb
->__fct
,
82 (tomb
, &data
, (const unsigned char **) &inbuf
,
83 (const unsigned char *) srcend
, NULL
,
86 /* Count the number of bytes. */
87 result
+= data
.__outbuf
- buf
;
89 while (status
== __GCONV_FULL_OUTPUT
);
91 if (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
)
93 /* There better should be a NUL byte at the end. */
94 assert (data
.__outbuf
[-1] == '\0');
95 /* Don't count the NUL character in. */
101 /* This code is based on the safe assumption that all internal
102 multi-byte encodings use the NUL byte only to mark the end
104 const wchar_t *srcend
= *src
+ __wcsnlen (*src
, len
) + 1;
108 data
.__outbufend
= dst
+ len
;
110 status
= DL_CALL_FCT (tomb
->__fct
,
111 (tomb
, &data
, (const unsigned char **) src
,
112 (const unsigned char *) srcend
, NULL
,
115 /* Count the number of bytes. */
116 result
= data
.__outbuf
- (unsigned char *) dst
;
118 /* We have to determine whether the last character converted
119 is the NUL character. */
120 if ((status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
)
121 && data
.__outbuf
[-1] == '\0')
123 assert (data
.__outbuf
!= (unsigned char *) dst
);
124 assert (__mbsinit (data
.__statep
));
130 /* There must not be any problems with the conversion but illegal input
132 assert (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
133 || status
== __GCONV_ILLEGAL_INPUT
134 || status
== __GCONV_INCOMPLETE_INPUT
135 || status
== __GCONV_FULL_OUTPUT
);
137 if (status
!= __GCONV_OK
&& status
!= __GCONV_FULL_OUTPUT
138 && status
!= __GCONV_EMPTY_INPUT
)
140 result
= (size_t) -1;
141 __set_errno (EILSEQ
);
146 weak_alias (__wcsrtombs
, wcsrtombs
)