gl/striconv.h

   1 /* Charset conversion.
   2    Copyright (C) 2001-2004, 2006-2007 Free Software Foundation, Inc.
   3    Written by Bruno Haible and Simon Josefsson.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef _STRICONV_H
  20 #define _STRICONV_H
  21
  22 #include <stddef.h>
  23 #if HAVE_ICONV
  24 #include <iconv.h>
  25 #endif
  26
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32
  33 #if HAVE_ICONV
  34
  35 /* Convert an entire string from one encoding to another, using iconv.
  36    The original string is at [SRC,...,SRC+SRCLEN-1].
  37    The conversion descriptor is passed as CD.
  38    *RESULTP and *LENGTH should initially be a scratch buffer and its size,
  39    or *RESULTP can initially be NULL.
  40    May erase the contents of the memory at *RESULTP.
  41    Return value: 0 if successful, otherwise -1 and errno set.
  42    If successful: The resulting string is stored in *RESULTP and its length
  43    in *LENGTHP.  *RESULTP is set to a freshly allocated memory block, or is
  44    unchanged if no dynamic memory allocation was necessary.  */
  45 extern int mem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
  46                          char **resultp, size_t *lengthp);
  47
  48 /* Convert an entire string from one encoding to another, using iconv.
  49    The original string is the NUL-terminated string starting at SRC.
  50    The conversion descriptor is passed as CD.  Both the "from" and the "to"
  51    encoding must use a single NUL byte at the end of the string (i.e. not
  52    UCS-2, UCS-4, UTF-16, UTF-32).
  53    Allocate a malloced memory block for the result.
  54    Return value: the freshly allocated resulting NUL-terminated string if
  55    successful, otherwise NULL and errno set.  */
  56 extern char * str_cd_iconv (const char *src, iconv_t cd);
  57
  58 #endif
  59
  60 /* Convert an entire string from one encoding to another, using iconv.
  61    The original string is the NUL-terminated string starting at SRC.
  62    Both the "from" and the "to" encoding must use a single NUL byte at the
  63    end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
  64    Allocate a malloced memory block for the result.
  65    Return value: the freshly allocated resulting NUL-terminated string if
  66    successful, otherwise NULL and errno set.  */
  67 extern char * str_iconv (const char *src,
  68                          const char *from_codeset, const char *to_codeset);
  69
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif
  74
  75
  76 #endif /* _STRICONV_H */