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/* fnxform - use iconv(3) to transform strings to and from "filename" format */
/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Bash 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "bashansi.h"
#include <stdio.h>
#include "bashtypes.h"
#include "stdc.h"
#include "bashintl.h"
#include <xmalloc.h>
#if defined (HAVE_ICONV)
# include <iconv.h>
#endif
#if defined (HAVE_LOCALE_CHARSET)
extern const char *locale_charset PARAMS((void));
#else
extern char *get_locale_var PARAMS((char *));
#endif
#if defined (HAVE_ICONV)
static iconv_t conv_fromfs = (iconv_t)-1;
static iconv_t conv_tofs = (iconv_t)-1;
#define OUTLEN_MAX 4096
static char *outbuf = 0;
static size_t outlen = 0;
static char *curencoding PARAMS((void));
static void init_tofs PARAMS((void));
static void init_fromfs PARAMS((void));
static char *
curencoding ()
{
char *loc;
#if defined (HAVE_LOCALE_CHARSET)
loc = (char *)locale_charset ();
return loc;
#else
char *dot, *mod;
loc = get_locale_var ("LC_CTYPE");
if (loc == 0 || *loc == 0)
return "";
dot = strchr (loc, '.');
if (dot == 0)
return loc;
mod = strchr (dot, '@');
if (mod)
*mod = '\0';
return ++dot;
#endif
}
static void
init_tofs ()
{
char *cur;
cur = curencoding ();
conv_tofs = iconv_open ("UTF-8-MAC", cur);
}
static void
init_fromfs ()
{
char *cur;
cur = curencoding ();
conv_fromfs = iconv_open (cur, "UTF-8-MAC");
}
char *
fnx_tofs (string, len)
char *string;
size_t len;
{
#ifdef MACOSX
ICONV_CONST char *inbuf;
char *tempbuf;
size_t templen;
if (conv_tofs == (iconv_t)-1)
init_tofs ();
if (conv_tofs == (iconv_t)-1)
return string;
/* Free and reallocate outbuf if it's *too* big */
if (outlen >= OUTLEN_MAX && len < OUTLEN_MAX - 8)
{
free (outbuf);
outbuf = 0;
outlen = 0;
}
inbuf = string;
if (outbuf == 0 || outlen < len + 8)
{
outlen = len + 8;
outbuf = outbuf ? xrealloc (outbuf, outlen + 1) : xmalloc (outlen + 1);
}
tempbuf = outbuf;
templen = outlen;
iconv (conv_tofs, NULL, NULL, NULL, NULL);
if (iconv (conv_tofs, &inbuf, &len, &tempbuf, &templen) == (size_t)-1)
return string;
*tempbuf = '\0';
return outbuf;
#else
return string;
#endif
}
char *
fnx_fromfs (string, len)
char *string;
size_t len;
{
#ifdef MACOSX
ICONV_CONST char *inbuf;
char *tempbuf;
size_t templen;
if (conv_fromfs == (iconv_t)-1)
init_fromfs ();
if (conv_fromfs == (iconv_t)-1)
return string;
/* Free and reallocate outbuf if it's *too* big */
if (outlen >= OUTLEN_MAX && len < OUTLEN_MAX - 8)
{
free (outbuf);
outbuf = 0;
outlen = 0;
}
inbuf = string;
if (outbuf == 0 || outlen < (len + 8))
{
outlen = len + 8;
outbuf = outbuf ? xrealloc (outbuf, outlen + 1) : xmalloc (outlen + 1);
}
tempbuf = outbuf;
templen = outlen;
iconv (conv_fromfs, NULL, NULL, NULL, NULL);
if (iconv (conv_fromfs, &inbuf, &len, &tempbuf, &templen) == (size_t)-1)
return string;
*tempbuf = '\0';
return outbuf;
#else
return string;
#endif
}
#else
char *
fnx_tofs (string)
char *string;
{
return string;
}
char *
fnx_fromfs (string)
char *string;
{
return string;
}
#endif
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