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/* Unicode character output to streams with locale dependent encoding.
Copyright (C) 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published
by the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA. */
/* Written by Bruno Haible <haible@clisp.cons.org>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#if HAVE_STDDEF_H
# include <stddef.h>
#endif
#include <stdio.h>
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#if HAVE_ICONV
# include <iconv.h>
/* Name of UCS-4 encoding with machine dependent endianness and alignment. */
# ifdef _LIBICONV_VERSION
# define UCS4_NAME "UCS-4-INTERNAL"
# else
# define UCS4_NAME "INTERNAL"
# endif
#endif
#include <error.h>
#if ENABLE_NLS
# include <libintl.h>
# define _(Text) gettext (Text)
#else
# define _(Text) Text
#endif
#include "unicodeio.h"
/* Use md5.h for its nice detection of unsigned 32-bit type. */
#include "md5.h"
#undef uint32_t
#define uint32_t md5_uint32
/* Outputs the Unicode character CODE to the output stream STREAM.
Assumes that the locale doesn't change between two calls. */
void
print_unicode_char (FILE *stream, unsigned int code)
{
#if HAVE_ICONV
static int initialized;
static iconv_t ucs4_to_local;
uint32_t in;
char outbuf[25];
const char *inptr;
size_t inbytesleft;
char *outptr;
size_t outbytesleft;
size_t res;
if (!initialized)
{
extern const char *locale_charset (void);
const char *charset = locale_charset ();
ucs4_to_local = (charset != NULL
? iconv_open (charset, UCS4_NAME)
: (iconv_t)(-1));
if (ucs4_to_local == (iconv_t)(-1))
{
/* For an unknown encoding, assume ASCII. */
ucs4_to_local = iconv_open ("ASCII", UCS4_NAME);
if (ucs4_to_local == (iconv_t)(-1))
error (1, 0, _("cannot output U+%04X: iconv function not usable"),
code);
}
initialized = 1;
}
in = code;
inptr = (char *) ∈
inbytesleft = sizeof (in);
outptr = outbuf;
outbytesleft = sizeof (outbuf);
/* Convert the character. */
res = iconv (ucs4_to_local, &inptr, &inbytesleft, &outptr, &outbytesleft);
if (inbytesleft > 0 || res == (size_t)(-1))
error (1, res == (size_t)(-1) ? errno : 0,
_("cannot convert U+%04X to local character set"), code);
/* Avoid glibc-2.1 bug. */
# if defined _LIBICONV_VERSION || !(__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1)
/* Get back to the initial shift state. */
res = iconv (ucs4_to_local, NULL, NULL, &outptr, &outbytesleft);
if (res == (size_t)(-1))
error (1, errno, _("cannot convert U+%04X to local character set"), code);
# endif
fwrite (outbuf, 1, outptr - outbuf, stream);
#else
error (1, 0, _("cannot output U+%04X: iconv function not available"), code);
#endif
}
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