1  /* Charset conversion.
       2     Copyright (C) 2001-2004, 2006-2007, 2009-2021 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 3, 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, see <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _STRICONV_H
      19  #define _STRICONV_H
      20  
      21  #include <stddef.h>
      22  #if HAVE_ICONV
      23  #include <iconv.h>
      24  #endif
      25  
      26  
      27  #ifdef __cplusplus
      28  extern "C" {
      29  #endif
      30  
      31  
      32  #if HAVE_ICONV
      33  
      34  /* Convert an entire string from one encoding to another, using iconv.
      35     The original string is at [SRC,...,SRC+SRCLEN-1].
      36     The conversion descriptor is passed as CD.
      37     *RESULTP and *LENGTH should initially be a scratch buffer and its size,
      38     or *RESULTP can initially be NULL.
      39     May erase the contents of the memory at *RESULTP.
      40     Return value: 0 if successful, otherwise -1 and errno set.
      41     If successful: The resulting string is stored in *RESULTP and its length
      42     in *LENGTHP.  *RESULTP is set to a freshly allocated memory block, or is
      43     unchanged if no dynamic memory allocation was necessary.  */
      44  extern int mem_cd_iconv (const char *src, size_t srclen, iconv_t cd,
      45                           char **resultp, size_t *lengthp);
      46  
      47  /* Convert an entire string from one encoding to another, using iconv.
      48     The original string is the NUL-terminated string starting at SRC.
      49     The conversion descriptor is passed as CD.  Both the "from" and the "to"
      50     encoding must use a single NUL byte at the end of the string (i.e. not
      51     UCS-2, UCS-4, UTF-16, UTF-32).
      52     Allocate a malloced memory block for the result.
      53     Return value: the freshly allocated resulting NUL-terminated string if
      54     successful, otherwise NULL and errno set.  */
      55  extern char * str_cd_iconv (const char *src, iconv_t cd);
      56  
      57  #endif
      58  
      59  /* Convert an entire string from one encoding to another, using iconv.
      60     The original string is the NUL-terminated string starting at SRC.
      61     Both the "from" and the "to" encoding must use a single NUL byte at the
      62     end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
      63     Allocate a malloced memory block for the result.
      64     Return value: the freshly allocated resulting NUL-terminated string if
      65     successful, otherwise NULL and errno set.  */
      66  extern char * str_iconv (const char *src,
      67                           const char *from_codeset, const char *to_codeset);
      68  
      69  
      70  #ifdef __cplusplus
      71  }
      72  #endif
      73  
      74  
      75  #endif /* _STRICONV_H */