src/iconv_encode_wchar.c

   1 /*
   2  * Copyright (C) 1995-2008, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  */
   6 /**
   7  * \file
   8  * \brief WCHAR_T iconv encoding / decoding
   9  */
  10
  11 #if HAVE_CONFIG_H
  12 #include <config.h>
  13 #endif
  14
  15 #include <assert.h>
  16 #include <errno.h>
  17 #include <string.h>
  18 #include <ctype.h>
  19 #if HAVE_WCHAR_H
  20 #include <wchar.h>
  21 #endif
  22
  23 #include <yaz/xmalloc.h>
  24 #include <yaz/nmem.h>
  25 #include <yaz/snprintf.h>
  26 #include "iconv-p.h"
  27
  28 struct encoder_data
  29 {
  30     unsigned long compose_char;
  31 };
  32
  33 #if HAVE_WCHAR_H
  34 static size_t write_wchar_t(yaz_iconv_t cd, yaz_iconv_encoder_t en,
  35                             unsigned long x,
  36                             char **outbuf, size_t *outbytesleft)
  37 {
  38     unsigned char *outp = (unsigned char *) *outbuf;
  39
  40     if (*outbytesleft >= sizeof(wchar_t))
  41     {
  42         wchar_t wch = x;
  43         memcpy(outp, &wch, sizeof(wch));
  44         outp += sizeof(wch);
  45         (*outbytesleft) -= sizeof(wch);
  46     }
  47     else
  48     {
  49         yaz_iconv_set_errno(cd, YAZ_ICONV_E2BIG);
  50         return (size_t)(-1);
  51     }
  52     *outbuf = (char *) outp;
  53     return 0;
  54 }
  55 #endif
  56
  57 yaz_iconv_encoder_t yaz_wchar_encoder(const char *tocode,
  58                                       yaz_iconv_encoder_t e)
  59
  60 {
  61 #if HAVE_WCHAR_H
  62     if (!yaz_matchstr(tocode, "wchar_t"))
  63     {
  64         e->write_handle = write_wchar_t;
  65         return e;
  66     }
  67 #endif
  68     return 0;
  69 }
  70
  71
  72 /*
  73  * Local variables:
  74  * c-basic-offset: 4
  75  * indent-tabs-mode: nil
  76  * End:
  77  * vim: shiftwidth=4 tabstop=8 expandtab
  78  */