mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-22 10:19:57 +01:00
bd4d65615b
* configure.ac: Do nor require libiconv for W32. * common/utf8conv.c [W32]: Do not incluce iconv.h. Request libgpg-error iconv macros. (jnlib_iconv): Use ICONV_CONST macro. * build-aux/speedo/w32/inst.nsi [!WITH_GUI]: Do not install libiconv. * build-aux/speedo.mk (speedo_spkgs) [!WITH_GUI]: Likewise. Signed-off-by: Werner Koch <wk@gnupg.org>
839 lines
22 KiB
C
839 lines
22 KiB
C
/* utf8conf.c - UTF8 character set conversion
|
|
* Copyright (C) 1994, 1998, 1999, 2000, 2001, 2003, 2006,
|
|
* 2008, 2010 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG is free software; you can redistribute it and/or modify it
|
|
* under the terms of either
|
|
*
|
|
* - the GNU Lesser General Public License as published by the Free
|
|
* Software Foundation; either version 3 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* or
|
|
*
|
|
* - the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* or both in parallel, as here.
|
|
*
|
|
* GnuPG 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 copies of the GNU General Public License
|
|
* and the GNU Lesser General Public License along with this program;
|
|
* if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <ctype.h>
|
|
#ifdef HAVE_LANGINFO_CODESET
|
|
#include <langinfo.h>
|
|
#endif
|
|
#include <errno.h>
|
|
|
|
#if HAVE_W32_SYSTEM
|
|
# /* Tell libgpg-error to provide the iconv macros. */
|
|
# define GPGRT_ENABLE_W32_ICONV_MACROS 1
|
|
#elif HAVE_ANDROID_SYSTEM
|
|
# /* No iconv support. */
|
|
#else
|
|
# include <iconv.h>
|
|
#endif
|
|
|
|
|
|
#include "util.h"
|
|
#include "common-defs.h"
|
|
#include "i18n.h"
|
|
#include "stringhelp.h"
|
|
#include "utf8conv.h"
|
|
|
|
#ifndef MB_LEN_MAX
|
|
#define MB_LEN_MAX 16
|
|
#endif
|
|
|
|
static const char *active_charset_name = "iso-8859-1";
|
|
static int no_translation; /* Set to true if we let simply pass through. */
|
|
static int use_iconv; /* iconv conversion functions required. */
|
|
|
|
|
|
#ifdef HAVE_ANDROID_SYSTEM
|
|
/* Fake stuff to get things building. */
|
|
typedef void *iconv_t;
|
|
#define ICONV_CONST
|
|
|
|
static iconv_t
|
|
iconv_open (const char *tocode, const char *fromcode)
|
|
{
|
|
(void)tocode;
|
|
(void)fromcode;
|
|
return (iconv_t)(-1);
|
|
}
|
|
|
|
static size_t
|
|
iconv (iconv_t cd, char **inbuf, size_t *inbytesleft,
|
|
char **outbuf, size_t *outbytesleft)
|
|
{
|
|
(void)cd;
|
|
(void)inbuf;
|
|
(void)inbytesleft;
|
|
(void)outbuf;
|
|
(void)outbytesleft;
|
|
return (size_t)(0);
|
|
}
|
|
|
|
static int
|
|
iconv_close (iconv_t cd)
|
|
{
|
|
(void)cd;
|
|
return 0;
|
|
}
|
|
#endif /*HAVE_ANDROID_SYSTEM*/
|
|
|
|
|
|
/* Error handler for iconv failures. This is needed to not clutter the
|
|
output with repeated diagnostics about a missing conversion. */
|
|
static void
|
|
handle_iconv_error (const char *to, const char *from, int use_fallback)
|
|
{
|
|
if (errno == EINVAL)
|
|
{
|
|
static int shown1, shown2;
|
|
int x;
|
|
|
|
if (to && !strcmp (to, "utf-8"))
|
|
{
|
|
x = shown1;
|
|
shown1 = 1;
|
|
}
|
|
else
|
|
{
|
|
x = shown2;
|
|
shown2 = 1;
|
|
}
|
|
|
|
if (!x)
|
|
log_info (_("conversion from '%s' to '%s' not available\n"),
|
|
from, to);
|
|
}
|
|
else
|
|
{
|
|
static int shown;
|
|
|
|
if (!shown)
|
|
log_info (_("iconv_open failed: %s\n"), strerror (errno));
|
|
shown = 1;
|
|
}
|
|
|
|
if (use_fallback)
|
|
{
|
|
/* To avoid further error messages we fallback to UTF-8 for the
|
|
native encoding. Nowadays this seems to be the best bet in
|
|
case of errors from iconv or nl_langinfo. */
|
|
active_charset_name = "utf-8";
|
|
no_translation = 0;
|
|
use_iconv = 0;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
int
|
|
set_native_charset (const char *newset)
|
|
{
|
|
const char *full_newset;
|
|
|
|
if (!newset)
|
|
{
|
|
#ifdef HAVE_ANDROID_SYSTEM
|
|
newset = "utf-8";
|
|
#elif defined HAVE_W32_SYSTEM
|
|
static char codepage[30];
|
|
unsigned int cpno;
|
|
const char *aliases;
|
|
|
|
/* We are a console program thus we need to use the
|
|
GetConsoleOutputCP function and not the the GetACP which
|
|
would give the codepage for a GUI program. Note this is not
|
|
a bulletproof detection because GetConsoleCP might return a
|
|
different one for console input. Not sure how to cope with
|
|
that. If the console Code page is not known we fall back to
|
|
the system code page. */
|
|
#ifndef HAVE_W32CE_SYSTEM
|
|
cpno = GetConsoleOutputCP ();
|
|
if (!cpno)
|
|
#endif
|
|
cpno = GetACP ();
|
|
sprintf (codepage, "CP%u", cpno );
|
|
/* Resolve alias. We use a long string string and not the usual
|
|
array to optimize if the code is taken to a DSO. Taken from
|
|
libiconv 1.9.2. */
|
|
newset = codepage;
|
|
for (aliases = ("CP936" "\0" "GBK" "\0"
|
|
"CP1361" "\0" "JOHAB" "\0"
|
|
"CP20127" "\0" "ASCII" "\0"
|
|
"CP20866" "\0" "KOI8-R" "\0"
|
|
"CP21866" "\0" "KOI8-RU" "\0"
|
|
"CP28591" "\0" "ISO-8859-1" "\0"
|
|
"CP28592" "\0" "ISO-8859-2" "\0"
|
|
"CP28593" "\0" "ISO-8859-3" "\0"
|
|
"CP28594" "\0" "ISO-8859-4" "\0"
|
|
"CP28595" "\0" "ISO-8859-5" "\0"
|
|
"CP28596" "\0" "ISO-8859-6" "\0"
|
|
"CP28597" "\0" "ISO-8859-7" "\0"
|
|
"CP28598" "\0" "ISO-8859-8" "\0"
|
|
"CP28599" "\0" "ISO-8859-9" "\0"
|
|
"CP28605" "\0" "ISO-8859-15" "\0"
|
|
"CP65001" "\0" "UTF-8" "\0");
|
|
*aliases;
|
|
aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1)
|
|
{
|
|
if (!strcmp (codepage, aliases) ||(*aliases == '*' && !aliases[1]))
|
|
{
|
|
newset = aliases + strlen (aliases) + 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#else /*!HAVE_W32_SYSTEM && !HAVE_ANDROID_SYSTEM*/
|
|
|
|
#ifdef HAVE_LANGINFO_CODESET
|
|
newset = nl_langinfo (CODESET);
|
|
#else /*!HAVE_LANGINFO_CODESET*/
|
|
/* Try to get the used charset from environment variables. */
|
|
static char codepage[30];
|
|
const char *lc, *dot, *mod;
|
|
|
|
strcpy (codepage, "iso-8859-1");
|
|
lc = getenv ("LC_ALL");
|
|
if (!lc || !*lc)
|
|
{
|
|
lc = getenv ("LC_CTYPE");
|
|
if (!lc || !*lc)
|
|
lc = getenv ("LANG");
|
|
}
|
|
if (lc && *lc)
|
|
{
|
|
dot = strchr (lc, '.');
|
|
if (dot)
|
|
{
|
|
mod = strchr (++dot, '@');
|
|
if (!mod)
|
|
mod = dot + strlen (dot);
|
|
if (mod - dot < sizeof codepage && dot != mod)
|
|
{
|
|
memcpy (codepage, dot, mod - dot);
|
|
codepage [mod - dot] = 0;
|
|
}
|
|
}
|
|
}
|
|
newset = codepage;
|
|
#endif /*!HAVE_LANGINFO_CODESET*/
|
|
#endif /*!HAVE_W32_SYSTEM && !HAVE_ANDROID_SYSTEM*/
|
|
}
|
|
|
|
full_newset = newset;
|
|
if (strlen (newset) > 3 && !ascii_memcasecmp (newset, "iso", 3))
|
|
{
|
|
newset += 3;
|
|
if (*newset == '-' || *newset == '_')
|
|
newset++;
|
|
}
|
|
|
|
/* Note that we silently assume that plain ASCII is actually meant
|
|
as Latin-1. This makes sense because many Unix system don't have
|
|
their locale set up properly and thus would get annoying error
|
|
messages and we have to handle all the "bug" reports. Latin-1 has
|
|
traditionally been the character set used for 8 bit characters on
|
|
Unix systems. */
|
|
if ( !*newset
|
|
|| !ascii_strcasecmp (newset, "8859-1" )
|
|
|| !ascii_strcasecmp (newset, "646" )
|
|
|| !ascii_strcasecmp (newset, "ASCII" )
|
|
|| !ascii_strcasecmp (newset, "ANSI_X3.4-1968" )
|
|
)
|
|
{
|
|
active_charset_name = "iso-8859-1";
|
|
no_translation = 0;
|
|
use_iconv = 0;
|
|
}
|
|
else if ( !ascii_strcasecmp (newset, "utf8" )
|
|
|| !ascii_strcasecmp(newset, "utf-8") )
|
|
{
|
|
active_charset_name = "utf-8";
|
|
no_translation = 1;
|
|
use_iconv = 0;
|
|
}
|
|
else
|
|
{
|
|
iconv_t cd;
|
|
|
|
cd = iconv_open (full_newset, "utf-8");
|
|
if (cd == (iconv_t)-1)
|
|
{
|
|
handle_iconv_error (full_newset, "utf-8", 0);
|
|
return -1;
|
|
}
|
|
iconv_close (cd);
|
|
cd = iconv_open ("utf-8", full_newset);
|
|
if (cd == (iconv_t)-1)
|
|
{
|
|
handle_iconv_error ("utf-8", full_newset, 0);
|
|
return -1;
|
|
}
|
|
iconv_close (cd);
|
|
active_charset_name = full_newset;
|
|
no_translation = 0;
|
|
use_iconv = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const char *
|
|
get_native_charset ()
|
|
{
|
|
return active_charset_name;
|
|
}
|
|
|
|
/* Return true if the native charset is utf-8. */
|
|
int
|
|
is_native_utf8 (void)
|
|
{
|
|
return no_translation;
|
|
}
|
|
|
|
|
|
/* Convert string, which is in native encoding to UTF8 and return a
|
|
new allocated UTF-8 string. This function terminates the process
|
|
on memory shortage. */
|
|
char *
|
|
native_to_utf8 (const char *orig_string)
|
|
{
|
|
const unsigned char *string = (const unsigned char *)orig_string;
|
|
const unsigned char *s;
|
|
char *buffer;
|
|
unsigned char *p;
|
|
size_t length = 0;
|
|
|
|
if (no_translation)
|
|
{
|
|
/* Already utf-8 encoded. */
|
|
buffer = xstrdup (orig_string);
|
|
}
|
|
else if (!use_iconv)
|
|
{
|
|
/* For Latin-1 we can avoid the iconv overhead. */
|
|
for (s = string; *s; s++)
|
|
{
|
|
length++;
|
|
if (*s & 0x80)
|
|
length++;
|
|
}
|
|
buffer = xmalloc (length + 1);
|
|
for (p = (unsigned char *)buffer, s = string; *s; s++)
|
|
{
|
|
if ( (*s & 0x80 ))
|
|
{
|
|
*p++ = 0xc0 | ((*s >> 6) & 3);
|
|
*p++ = 0x80 | (*s & 0x3f);
|
|
}
|
|
else
|
|
*p++ = *s;
|
|
}
|
|
*p = 0;
|
|
}
|
|
else
|
|
{
|
|
/* Need to use iconv. */
|
|
iconv_t cd;
|
|
const char *inptr;
|
|
char *outptr;
|
|
size_t inbytes, outbytes;
|
|
|
|
cd = iconv_open ("utf-8", active_charset_name);
|
|
if (cd == (iconv_t)-1)
|
|
{
|
|
handle_iconv_error ("utf-8", active_charset_name, 1);
|
|
return native_to_utf8 (string);
|
|
}
|
|
|
|
for (s=string; *s; s++ )
|
|
{
|
|
length++;
|
|
if ((*s & 0x80))
|
|
length += 5; /* We may need up to 6 bytes for the utf8 output. */
|
|
}
|
|
buffer = xmalloc (length + 1);
|
|
|
|
inptr = string;
|
|
inbytes = strlen (string);
|
|
outptr = buffer;
|
|
outbytes = length;
|
|
if ( iconv (cd, (ICONV_CONST char **)&inptr, &inbytes,
|
|
&outptr, &outbytes) == (size_t)-1)
|
|
{
|
|
static int shown;
|
|
|
|
if (!shown)
|
|
log_info (_("conversion from '%s' to '%s' failed: %s\n"),
|
|
active_charset_name, "utf-8", strerror (errno));
|
|
shown = 1;
|
|
/* We don't do any conversion at all but use the strings as is. */
|
|
strcpy (buffer, string);
|
|
}
|
|
else /* Success. */
|
|
{
|
|
*outptr = 0;
|
|
/* We could realloc the buffer now but I doubt that it makes
|
|
much sense given that it will get freed anyway soon
|
|
after. */
|
|
}
|
|
iconv_close (cd);
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
|
|
|
|
static char *
|
|
do_utf8_to_native (const char *string, size_t length, int delim,
|
|
int with_iconv)
|
|
{
|
|
int nleft;
|
|
int i;
|
|
unsigned char encbuf[8];
|
|
int encidx;
|
|
const unsigned char *s;
|
|
size_t n;
|
|
char *buffer = NULL;
|
|
char *p = NULL;
|
|
unsigned long val = 0;
|
|
size_t slen;
|
|
int resync = 0;
|
|
|
|
/* First pass (p==NULL): count the extended utf-8 characters. */
|
|
/* Second pass (p!=NULL): create string. */
|
|
for (;;)
|
|
{
|
|
for (slen = length, nleft = encidx = 0, n = 0,
|
|
s = (const unsigned char *)string;
|
|
slen;
|
|
s++, slen--)
|
|
{
|
|
if (resync)
|
|
{
|
|
if (!(*s < 128 || (*s >= 0xc0 && *s <= 0xfd)))
|
|
{
|
|
/* Still invalid. */
|
|
if (p)
|
|
{
|
|
sprintf (p, "\\x%02x", *s);
|
|
p += 4;
|
|
}
|
|
n += 4;
|
|
continue;
|
|
}
|
|
resync = 0;
|
|
}
|
|
if (!nleft)
|
|
{
|
|
if (!(*s & 0x80))
|
|
{
|
|
/* Plain ascii. */
|
|
if ( delim != -1
|
|
&& (*s < 0x20 || *s == 0x7f || *s == delim
|
|
|| (delim && *s == '\\')))
|
|
{
|
|
n++;
|
|
if (p)
|
|
*p++ = '\\';
|
|
switch (*s)
|
|
{
|
|
case '\n': n++; if ( p ) *p++ = 'n'; break;
|
|
case '\r': n++; if ( p ) *p++ = 'r'; break;
|
|
case '\f': n++; if ( p ) *p++ = 'f'; break;
|
|
case '\v': n++; if ( p ) *p++ = 'v'; break;
|
|
case '\b': n++; if ( p ) *p++ = 'b'; break;
|
|
case 0: n++; if ( p ) *p++ = '0'; break;
|
|
default:
|
|
n += 3;
|
|
if (p)
|
|
{
|
|
sprintf (p, "x%02x", *s);
|
|
p += 3;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (p)
|
|
*p++ = *s;
|
|
n++;
|
|
}
|
|
}
|
|
else if ((*s & 0xe0) == 0xc0) /* 110x xxxx */
|
|
{
|
|
val = *s & 0x1f;
|
|
nleft = 1;
|
|
encidx = 0;
|
|
encbuf[encidx++] = *s;
|
|
}
|
|
else if ((*s & 0xf0) == 0xe0) /* 1110 xxxx */
|
|
{
|
|
val = *s & 0x0f;
|
|
nleft = 2;
|
|
encidx = 0;
|
|
encbuf[encidx++] = *s;
|
|
}
|
|
else if ((*s & 0xf8) == 0xf0) /* 1111 0xxx */
|
|
{
|
|
val = *s & 0x07;
|
|
nleft = 3;
|
|
encidx = 0;
|
|
encbuf[encidx++] = *s;
|
|
}
|
|
else if ((*s & 0xfc) == 0xf8) /* 1111 10xx */
|
|
{
|
|
val = *s & 0x03;
|
|
nleft = 4;
|
|
encidx = 0;
|
|
encbuf[encidx++] = *s;
|
|
}
|
|
else if ((*s & 0xfe) == 0xfc) /* 1111 110x */
|
|
{
|
|
val = *s & 0x01;
|
|
nleft = 5;
|
|
encidx = 0;
|
|
encbuf[encidx++] = *s;
|
|
}
|
|
else /* Invalid encoding: print as \xNN. */
|
|
{
|
|
if (p)
|
|
{
|
|
sprintf (p, "\\x%02x", *s);
|
|
p += 4;
|
|
}
|
|
n += 4;
|
|
resync = 1;
|
|
}
|
|
}
|
|
else if (*s < 0x80 || *s >= 0xc0) /* Invalid utf-8 */
|
|
{
|
|
if (p)
|
|
{
|
|
for (i = 0; i < encidx; i++)
|
|
{
|
|
sprintf (p, "\\x%02x", encbuf[i]);
|
|
p += 4;
|
|
}
|
|
sprintf (p, "\\x%02x", *s);
|
|
p += 4;
|
|
}
|
|
n += 4 + 4 * encidx;
|
|
nleft = 0;
|
|
encidx = 0;
|
|
resync = 1;
|
|
}
|
|
else
|
|
{
|
|
encbuf[encidx++] = *s;
|
|
val <<= 6;
|
|
val |= *s & 0x3f;
|
|
if (!--nleft) /* Ready. */
|
|
{
|
|
if (no_translation)
|
|
{
|
|
if (p)
|
|
{
|
|
for (i = 0; i < encidx; i++)
|
|
*p++ = encbuf[i];
|
|
}
|
|
n += encidx;
|
|
encidx = 0;
|
|
}
|
|
else if (with_iconv)
|
|
{
|
|
/* Our strategy for using iconv is a bit strange
|
|
but it better keeps compatibility with
|
|
previous versions in regard to how invalid
|
|
encodings are displayed. What we do is to
|
|
keep the utf-8 as is and have the real
|
|
translation step then at the end. Yes, I
|
|
know that this is ugly. However we are short
|
|
of the 1.4 release and for this branch we
|
|
should not mess too much around with iconv
|
|
things. One reason for this is that we don't
|
|
know enough about non-GNU iconv
|
|
implementation and want to minimize the risk
|
|
of breaking the code on too many platforms. */
|
|
if ( p )
|
|
{
|
|
for (i=0; i < encidx; i++ )
|
|
*p++ = encbuf[i];
|
|
}
|
|
n += encidx;
|
|
encidx = 0;
|
|
}
|
|
else /* Latin-1 case. */
|
|
{
|
|
if (val >= 0x80 && val < 256)
|
|
{
|
|
/* We can simply print this character */
|
|
n++;
|
|
if (p)
|
|
*p++ = val;
|
|
}
|
|
else
|
|
{
|
|
/* We do not have a translation: print utf8. */
|
|
if (p)
|
|
{
|
|
for (i = 0; i < encidx; i++)
|
|
{
|
|
sprintf (p, "\\x%02x", encbuf[i]);
|
|
p += 4;
|
|
}
|
|
}
|
|
n += encidx * 4;
|
|
encidx = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
if (!buffer)
|
|
{
|
|
/* Allocate the buffer after the first pass. */
|
|
buffer = p = xmalloc (n + 1);
|
|
}
|
|
else if (with_iconv)
|
|
{
|
|
/* Note: See above for comments. */
|
|
iconv_t cd;
|
|
const char *inptr;
|
|
char *outbuf, *outptr;
|
|
size_t inbytes, outbytes;
|
|
|
|
*p = 0; /* Terminate the buffer. */
|
|
|
|
cd = iconv_open (active_charset_name, "utf-8");
|
|
if (cd == (iconv_t)-1)
|
|
{
|
|
handle_iconv_error (active_charset_name, "utf-8", 1);
|
|
xfree (buffer);
|
|
return utf8_to_native (string, length, delim);
|
|
}
|
|
|
|
/* Allocate a new buffer large enough to hold all possible
|
|
encodings. */
|
|
n = p - buffer + 1;
|
|
inbytes = n - 1;;
|
|
inptr = buffer;
|
|
outbytes = n * MB_LEN_MAX;
|
|
if (outbytes / MB_LEN_MAX != n)
|
|
BUG (); /* Actually an overflow. */
|
|
outbuf = outptr = xmalloc (outbytes);
|
|
if ( iconv (cd, (ICONV_CONST char **)&inptr, &inbytes,
|
|
&outptr, &outbytes) == (size_t)-1)
|
|
{
|
|
static int shown;
|
|
|
|
if (!shown)
|
|
log_info (_("conversion from '%s' to '%s' failed: %s\n"),
|
|
"utf-8", active_charset_name, strerror (errno));
|
|
shown = 1;
|
|
/* Didn't worked out. Try again but without iconv. */
|
|
xfree (buffer);
|
|
buffer = NULL;
|
|
xfree (outbuf);
|
|
outbuf = do_utf8_to_native (string, length, delim, 0);
|
|
}
|
|
else /* Success. */
|
|
{
|
|
*outptr = 0; /* Make sure it is a string. */
|
|
/* We could realloc the buffer now but I doubt that it
|
|
makes much sense given that it will get freed
|
|
anyway soon after. */
|
|
xfree (buffer);
|
|
}
|
|
iconv_close (cd);
|
|
return outbuf;
|
|
}
|
|
else /* Not using iconv. */
|
|
{
|
|
*p = 0; /* Make sure it is a string. */
|
|
return buffer;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Convert string, which is in UTF-8 to native encoding. Replace
|
|
illegal encodings by some "\xnn" and quote all control
|
|
characters. A character with value DELIM will always be quoted, it
|
|
must be a vanilla ASCII character. A DELIM value of -1 is special:
|
|
it disables all quoting of control characters. This function
|
|
terminates the process on memory shortage. */
|
|
char *
|
|
utf8_to_native (const char *string, size_t length, int delim)
|
|
{
|
|
return do_utf8_to_native (string, length, delim, use_iconv);
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Wrapper function for iconv_open, required for W32 as we dlopen that
|
|
library on that system. */
|
|
jnlib_iconv_t
|
|
jnlib_iconv_open (const char *tocode, const char *fromcode)
|
|
{
|
|
return (jnlib_iconv_t)iconv_open (tocode, fromcode);
|
|
}
|
|
|
|
|
|
/* Wrapper function for iconv, required for W32 as we dlopen that
|
|
library on that system. */
|
|
size_t
|
|
jnlib_iconv (jnlib_iconv_t cd,
|
|
const char **inbuf, size_t *inbytesleft,
|
|
char **outbuf, size_t *outbytesleft)
|
|
{
|
|
return iconv ((iconv_t)cd, (ICONV_CONST char**)inbuf, inbytesleft,
|
|
outbuf, outbytesleft);
|
|
}
|
|
|
|
/* Wrapper function for iconv_close, required for W32 as we dlopen that
|
|
library on that system. */
|
|
int
|
|
jnlib_iconv_close (jnlib_iconv_t cd)
|
|
{
|
|
return iconv_close ((iconv_t)cd);
|
|
}
|
|
|
|
|
|
#ifdef HAVE_W32_SYSTEM
|
|
/* Return a malloced string encoded for CODEPAGE from the wide char input
|
|
string STRING. Caller must free this value. Returns NULL and sets
|
|
ERRNO on failure. Calling this function with STRING set to NULL is
|
|
not defined. */
|
|
static char *
|
|
wchar_to_cp (const wchar_t *string, unsigned int codepage)
|
|
{
|
|
int n;
|
|
char *result;
|
|
|
|
n = WideCharToMultiByte (codepage, 0, string, -1, NULL, 0, NULL, NULL);
|
|
if (n < 0)
|
|
{
|
|
gpg_err_set_errno (EINVAL);
|
|
return NULL;
|
|
}
|
|
|
|
result = xtrymalloc (n+1);
|
|
if (!result)
|
|
return NULL;
|
|
|
|
n = WideCharToMultiByte (codepage, 0, string, -1, result, n, NULL, NULL);
|
|
if (n < 0)
|
|
{
|
|
xfree (result);
|
|
gpg_err_set_errno (EINVAL);
|
|
result = NULL;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Return a malloced wide char string from a CODEPAGE encoded input
|
|
string STRING. Caller must free this value. Returns NULL and sets
|
|
ERRNO on failure. Calling this function with STRING set to NULL is
|
|
not defined. */
|
|
static wchar_t *
|
|
cp_to_wchar (const char *string, unsigned int codepage)
|
|
{
|
|
int n;
|
|
size_t nbytes;
|
|
wchar_t *result;
|
|
|
|
n = MultiByteToWideChar (codepage, 0, string, -1, NULL, 0);
|
|
if (n < 0)
|
|
{
|
|
gpg_err_set_errno (EINVAL);
|
|
return NULL;
|
|
}
|
|
|
|
nbytes = (size_t)(n+1) * sizeof(*result);
|
|
if (nbytes / sizeof(*result) != (n+1))
|
|
{
|
|
gpg_err_set_errno (ENOMEM);
|
|
return NULL;
|
|
}
|
|
result = xtrymalloc (nbytes);
|
|
if (!result)
|
|
return NULL;
|
|
|
|
n = MultiByteToWideChar (codepage, 0, string, -1, result, n);
|
|
if (n < 0)
|
|
{
|
|
xfree (result);
|
|
gpg_err_set_errno (EINVAL);
|
|
result = NULL;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Return a malloced string encoded in the active code page from the
|
|
* wide char input string STRING. Caller must free this value.
|
|
* Returns NULL and sets ERRNO on failure. Calling this function with
|
|
* STRING set to NULL is not defined. */
|
|
char *
|
|
wchar_to_native (const wchar_t *string)
|
|
{
|
|
return wchar_to_cp (string, CP_ACP);
|
|
}
|
|
|
|
|
|
/* Return a malloced wide char string from an UTF-8 encoded input
|
|
* string STRING. Caller must free this value. Returns NULL and sets
|
|
* ERRNO on failure. Calling this function with STRING set to NULL is
|
|
* not defined. */
|
|
wchar_t *
|
|
native_to_wchar (const char *string)
|
|
{
|
|
return cp_to_wchar (string, CP_ACP);
|
|
}
|
|
|
|
|
|
/* Return a malloced string encoded in UTF-8 from the wide char input
|
|
* string STRING. Caller must free this value. Returns NULL and sets
|
|
* ERRNO on failure. Calling this function with STRING set to NULL is
|
|
* not defined. */
|
|
char *
|
|
wchar_to_utf8 (const wchar_t *string)
|
|
{
|
|
return wchar_to_cp (string, CP_UTF8);
|
|
}
|
|
|
|
|
|
/* Return a malloced wide char string from an UTF-8 encoded input
|
|
* string STRING. Caller must free this value. Returns NULL and sets
|
|
* ERRNO on failure. Calling this function with STRING set to NULL is
|
|
* not defined. */
|
|
wchar_t *
|
|
utf8_to_wchar (const char *string)
|
|
{
|
|
return cp_to_wchar (string, CP_UTF8);
|
|
}
|
|
|
|
#endif /*HAVE_W32_SYSTEM*/
|