iconv/iconv.c

   1 /* Convert characters in input buffer using conversion descriptor to
   2    output buffer.
   3    Copyright (C) 1997 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Library General Public License as
   9    published by the Free Software Foundation; either version 2 of the
  10    License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Library General Public License for more details.
  16
  17    You should have received a copy of the GNU Library General Public
  18    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  19    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include <errno.h>
  23 #include <iconv.h>
  24 #include <gconv.h>
  25
  26 #include <assert.h>
  27
  28
  29 size_t
  30 iconv (iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf,
  31        size_t *outbytesleft)
  32 {
  33   gconv_t gcd = (gconv_t) cd;
  34   size_t converted;
  35   int result;
  36
  37   result = __gconv (gcd, inbuf, inbytesleft, outbuf, outbytesleft, &converted);
  38   switch (result)
  39     {
  40     case GCONV_ILLEGAL_DESCRIPTOR:
  41       __set_errno (EBADF);
  42       converted = (size_t) -1L;
  43       break;
  44
  45     case GCONV_ILLEGAL_INPUT:
  46       __set_errno (EILSEQ);
  47       converted = (size_t) -1L;
  48       break;
  49
  50     case GCONV_FULL_OUTPUT:
  51       __set_errno (E2BIG);
  52       converted = (size_t) -1L;
  53       break;
  54
  55     case GCONV_INCOMPLETE_INPUT:
  56       __set_errno (EINVAL);
  57       converted = (size_t) -1L;
  58       break;
  59
  60     case GCONV_EMPTY_INPUT:
  61     case GCONV_OK:
  62       /* Nothing.  */
  63       break;
  64
  65     default:
  66       assert (!"Nothing like this should happen");
  67     }
  68
  69   return converted;
  70 }