/* Charset conversion with out-of-memory checking.

   Copyright (C) 2001-2004, 2006-2007, 2009-2017 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 <http://www.gnu.org/licenses/>.  */

#ifndef _XSTRICONV_H

#define _XSTRICONV_H

#include <stddef.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);

#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);

#ifdef __cplusplus

}

#endif

#endif /* _XSTRICONV_H */