src/iconv_encode_wchar.c

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