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/* This file is part of the YAZ toolkit.
* Copyright (C) Index Data
* See the file LICENSE for details.
*/
/**
* \file
* \brief WCHAR_T iconv encoding / decoding
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <errno.h>
#include <string.h>
#if HAVE_WCHAR_H
#include <wchar.h>
#endif
#include <yaz/xmalloc.h>
#include "iconv-p.h"
struct encoder_data
{
unsigned long compose_char;
};
#if HAVE_WCHAR_H
static size_t write_wchar_t(yaz_iconv_t cd, yaz_iconv_encoder_t en,
unsigned long x,
char **outbuf, size_t *outbytesleft)
{
unsigned char *outp = (unsigned char *) *outbuf;
if (*outbytesleft >= sizeof(wchar_t))
{
wchar_t wch = x;
memcpy(outp, &wch, sizeof(wch));
outp += sizeof(wch);
(*outbytesleft) -= sizeof(wch);
}
else
{
yaz_iconv_set_errno(cd, YAZ_ICONV_E2BIG);
return (size_t)(-1);
}
*outbuf = (char *) outp;
return 0;
}
#endif
yaz_iconv_encoder_t yaz_wchar_encoder(const char *tocode,
yaz_iconv_encoder_t e)
{
#if HAVE_WCHAR_H
if (!yaz_matchstr(tocode, "wchar_t"))
{
e->write_handle = write_wchar_t;
return e;
}
#endif
return 0;
}
#if HAVE_WCHAR_H
static unsigned long read_wchar_t(yaz_iconv_t cd, yaz_iconv_decoder_t d,
unsigned char *inp,
size_t inbytesleft, size_t *no_read)
{
unsigned long x = 0;
if (inbytesleft < sizeof(wchar_t))
{
yaz_iconv_set_errno(cd, YAZ_ICONV_EINVAL); /* incomplete input */
*no_read = 0;
}
else
{
wchar_t wch;
memcpy(&wch, inp, sizeof(wch));
x = wch;
*no_read = sizeof(wch);
}
return x;
}
#endif
yaz_iconv_decoder_t yaz_wchar_decoder(const char *fromcode,
yaz_iconv_decoder_t d)
{
#if HAVE_WCHAR_H
if (!yaz_matchstr(fromcode, "wchar_t"))
{
d->read_handle = read_wchar_t;
return d;
}
#endif
return 0;
}
/*
* Local variables:
* c-basic-offset: 4
* c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/
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