1 /* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 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
;
47 /* Tell where we want the result. */
48 data
.invocation_counter
= 0;
49 data
.internal_use
= 1;
51 data
.statep
= ps
?: &state
;
53 /* Make sure we use the correct function. */
54 update_conversion_ptrs ();
56 /* We have to handle DST == NULL special. */
59 unsigned char buf
[256]; /* Just an arbitrary value. */
60 const wchar_t *srcend
= *src
+ __wcslen (*src
) + 1;
61 const wchar_t *inbuf
= *src
;
65 data
.outbufend
= buf
+ sizeof (buf
);
71 status
= (*__wcsmbs_gconv_fcts
.tomb
->fct
) (__wcsmbs_gconv_fcts
.tomb
,
73 (const unsigned char **) &inbuf
,
74 (const unsigned char *) srcend
,
77 /* Count the number of bytes. */
78 result
+= data
.outbuf
- buf
;
80 while (status
== GCONV_FULL_OUTPUT
);
82 if (status
== GCONV_OK
|| status
== GCONV_EMPTY_INPUT
)
84 /* There better should be a NUL byte at the end. */
85 assert (data
.outbuf
[-1] == '\0');
86 /* Don't count the NUL character in. */
92 /* This code is based on the safe assumption that all internal
93 multi-byte encodings use the NUL byte only to mark the end
95 const wchar_t *srcend
= *src
+ __wcsnlen (*src
, len
* MB_CUR_MAX
) + 1;
99 data
.outbufend
= dst
+ len
;
101 status
= (*__wcsmbs_gconv_fcts
.tomb
->fct
) (__wcsmbs_gconv_fcts
.tomb
,
103 (const unsigned char **) src
,
104 (const unsigned char *) srcend
,
107 /* Count the number of bytes. */
108 result
= data
.outbuf
- (unsigned char *) dst
;
110 /* We have to determine whether the last character converted
111 is the NUL character. */
112 if ((status
== GCONV_OK
|| status
== GCONV_EMPTY_INPUT
113 || status
== GCONV_FULL_OUTPUT
)
114 && data
.outbuf
[-1] == '\0')
116 assert (data
.outbuf
!= (unsigned char *) dst
);
117 assert (__mbsinit (data
.statep
));
123 /* There must not be any problems with the conversion but illegal input
125 assert (status
== GCONV_OK
|| status
== GCONV_EMPTY_INPUT
126 || status
== GCONV_ILLEGAL_INPUT
127 || status
== GCONV_INCOMPLETE_INPUT
|| status
== GCONV_FULL_OUTPUT
);
129 if (status
!= GCONV_OK
&& status
!= GCONV_FULL_OUTPUT
130 && status
!= GCONV_EMPTY_INPUT
)
132 result
= (size_t) -1;
133 __set_errno (EILSEQ
);
138 weak_alias (__wcsrtombs
, wcsrtombs
)