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. */
24 #include <wcsmbsload.h>
29 # define EILSEQ EINVAL
33 /* This is the private state used if PS is NULL. */
34 static mbstate_t state
;
37 __wcsrtombs (dst
, src
, len
, ps
)
43 struct __gconv_step_data data
;
46 struct __gconv_step
*tomb
;
48 /* Tell where we want the result. */
49 data
.__invocation_counter
= 0;
50 data
.__internal_use
= 1;
52 data
.__statep
= ps
?: &state
;
54 /* Make sure we use the correct function. */
55 update_conversion_ptrs ();
57 /* Get the structure with the function pointers. */
58 tomb
= __wcsmbs_gconv_fcts
.tomb
;
60 /* We have to handle DST == NULL special. */
64 unsigned char buf
[256]; /* Just an arbitrary value. */
65 const wchar_t *srcend
= *src
+ __wcslen (*src
) + 1;
66 const wchar_t *inbuf
= *src
;
69 temp_state
= *data
.__statep
;
70 data
.__statep
= &temp_state
;
73 data
.__outbufend
= buf
+ sizeof (buf
);
79 status
= (*tomb
->__fct
) (__wcsmbs_gconv_fcts
.tomb
, &data
,
80 (const unsigned char **) &inbuf
,
81 (const unsigned char *) srcend
, &dummy
,
84 /* Count the number of bytes. */
85 result
+= data
.__outbuf
- buf
;
87 while (status
== __GCONV_FULL_OUTPUT
);
89 if (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
)
91 /* There better should be a NUL byte at the end. */
92 assert (data
.__outbuf
[-1] == '\0');
93 /* Don't count the NUL character in. */
99 /* This code is based on the safe assumption that all internal
100 multi-byte encodings use the NUL byte only to mark the end
102 const wchar_t *srcend
= *src
+ __wcsnlen (*src
, len
) + 1;
106 data
.__outbufend
= dst
+ len
;
108 status
= (*tomb
->__fct
) (__wcsmbs_gconv_fcts
.tomb
, &data
,
109 (const unsigned char **) src
,
110 (const unsigned char *) srcend
, &dummy
, 0, 1);
112 /* Count the number of bytes. */
113 result
= data
.__outbuf
- (unsigned char *) dst
;
115 /* We have to determine whether the last character converted
116 is the NUL character. */
117 if ((status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
)
118 && data
.__outbuf
[-1] == '\0')
120 assert (data
.__outbuf
!= (unsigned char *) dst
);
121 assert (__mbsinit (data
.__statep
));
127 /* There must not be any problems with the conversion but illegal input
129 assert (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
130 || status
== __GCONV_ILLEGAL_INPUT
131 || status
== __GCONV_INCOMPLETE_INPUT
132 || status
== __GCONV_FULL_OUTPUT
);
134 if (status
!= __GCONV_OK
&& status
!= __GCONV_FULL_OUTPUT
135 && status
!= __GCONV_EMPTY_INPUT
)
137 result
= (size_t) -1;
138 __set_errno (EILSEQ
);
143 weak_alias (__wcsrtombs
, wcsrtombs
)