1  /* Charset conversion with out-of-memory checking.
       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 of the License, or
       8     (at your option) 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 _XSTRICONV_H
      19  #define _XSTRICONV_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     Upon memory allocation failure, report the error and exit.
      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 xmem_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     Upon memory allocation failure, report the error and exit.
      55     Return value: the freshly allocated resulting NUL-terminated string if
      56     successful, otherwise NULL and errno set.  */
      57  extern char * xstr_cd_iconv (const char *src, iconv_t cd);
      58  
      59  #endif
      60  
      61  /* Convert an entire string from one encoding to another, using iconv.
      62     The original string is the NUL-terminated string starting at SRC.
      63     Both the "from" and the "to" encoding must use a single NUL byte at the
      64     end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
      65     Allocate a malloced memory block for the result.
      66     Upon memory allocation failure, report the error and exit.
      67     Return value: the freshly allocated resulting NUL-terminated string if
      68     successful, otherwise NULL and errno set.  */
      69  extern char * xstr_iconv (const char *src,
      70                            const char *from_codeset, const char *to_codeset);
      71  
      72  
      73  #ifdef __cplusplus
      74  }
      75  #endif
      76  
      77  
      78  #endif /* _XSTRICONV_H */