356b01119e
Include langinfo.h if needed. Use locale_charset only if USE_INCLUDED_LIBINTL; if not, use nl_langinfo (CODESET) if available.
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/* copysym.c -- Return a copyright symbol suitable for the current locale.
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Copyright (C) 2001 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Written by Paul Eggert. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stddef.h>
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#if HAVE_ICONV
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# include <iconv.h>
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# if ! USE_INCLUDED_LIBINTL && HAVE_LANGINFO_CODESET
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# include <langinfo.h>
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# endif
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# if HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif
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#include "copysym.h"
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/* Store into BUF (of size BUFSIZE) a representation of the copyright
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symbol (C-in-a-circle) that is a valid text string for the current
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locale. Return BUF if successful, and a pointer to some other
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string otherwise. */
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char const *
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copyright_symbol (char *buf, size_t bufsize)
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{
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#if HAVE_ICONV
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char const *outcharset = getenv ("OUTPUT_CHARSET");
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if (! (outcharset && *outcharset))
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{
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#if USE_INCLUDED_LIBINTL
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extern char const *locale_charset (void);
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outcharset = locale_charset ();
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#else
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# if HAVE_LANGINFO_CODESET
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outcharset = nl_langinfo (CODESET);
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# endif
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#endif
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}
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if (*outcharset)
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{
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iconv_t conv = iconv_open (outcharset, "UTF-8");
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if (conv != (iconv_t) -1)
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{
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static char const copyright_utf_8[] = "\302\251";
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char ICONV_CONST *inptr = (char ICONV_CONST *) ©right_utf_8;
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size_t inleft = sizeof copyright_utf_8;
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char *outptr = buf;
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size_t chars = iconv (conv, &inptr, &inleft, &outptr, &bufsize);
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iconv_close (conv);
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if (chars != (size_t) -1)
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return buf;
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}
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}
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#endif
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/* "(C)" is the best we can do in ASCII. */
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return "(C)";
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}
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