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/* Charset conversion with out-of-memory checking.
Copyright (C) 2001-2004, 2006-2007, 2009-2021 Free Software Foundation, Inc.
Written by Bruno Haible and Simon Josefsson.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _XSTRICONV_H
#define _XSTRICONV_H
#include <stdlib.h>
#if HAVE_ICONV
#include <iconv.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if HAVE_ICONV
/* Convert an entire string from one encoding to another, using iconv.
The original string is at [SRC,...,SRC+SRCLEN-1].
The conversion descriptor is passed as CD.
*RESULTP and *LENGTH should initially be a scratch buffer and its size,
or *RESULTP can initially be NULL.
May erase the contents of the memory at *RESULTP.
Upon memory allocation failure, report the error and exit.
Return value: 0 if successful, otherwise -1 and errno set.
If successful: The resulting string is stored in *RESULTP and its length
in *LENGTHP. *RESULTP is set to a freshly allocated memory block, or is
unchanged if no dynamic memory allocation was necessary. */
extern int xmem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
char **resultp, size_t *lengthp);
/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
The conversion descriptor is passed as CD. Both the "from" and the "to"
encoding must use a single NUL byte at the end of the string (i.e. not
UCS-2, UCS-4, UTF-16, UTF-32).
Allocate a malloced memory block for the result.
Upon memory allocation failure, report the error and exit.
Return value: the freshly allocated resulting NUL-terminated string if
successful, otherwise NULL and errno set. */
extern char * xstr_cd_iconv (const char *src, iconv_t cd)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
#endif
/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
Both the "from" and the "to" encoding must use a single NUL byte at the
end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
Allocate a malloced memory block for the result.
Upon memory allocation failure, report the error and exit.
Return value: the freshly allocated resulting NUL-terminated string if
successful, otherwise NULL and errno set. */
extern char * xstr_iconv (const char *src,
const char *from_codeset, const char *to_codeset)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
#ifdef __cplusplus
}
#endif
#endif /* _XSTRICONV_H */
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