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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2011 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "arch/IArchString.h"
#include "arch/Arch.h"
#include "common/common.h"
#include <climits>
#include <cstring>
#include <cstdlib>
#include <mutex>
std::mutex s_mutex;
//
// use C library non-reentrant multibyte conversion with mutex
//
IArchString::~IArchString()
{
}
int
IArchString::convStringWCToMB(char* dst,
const wchar_t* src, UInt32 n, bool* errors)
{
std::lock_guard<std::mutex> lock(s_mutex);
ptrdiff_t len = 0;
bool dummyErrors;
if (errors == NULL) {
errors = &dummyErrors;
}
if (dst == NULL) {
char dummy[MB_LEN_MAX];
for (const wchar_t* scan = src; n > 0; ++scan, --n) {
ptrdiff_t mblen = wctomb(dummy, *scan);
if (mblen == -1) {
*errors = true;
mblen = 1;
}
len += mblen;
}
ptrdiff_t mblen = wctomb(dummy, L'\0');
if (mblen != -1) {
len += mblen - 1;
}
}
else {
char* dst0 = dst;
for (const wchar_t* scan = src; n > 0; ++scan, --n) {
ptrdiff_t mblen = wctomb(dst, *scan);
if (mblen == -1) {
*errors = true;
*dst++ = '?';
}
else {
dst += mblen;
}
}
ptrdiff_t mblen = wctomb(dst, L'\0');
if (mblen != -1) {
// don't include nul terminator
dst += mblen - 1;
}
len = dst - dst0;
}
return (int)len;
}
int
IArchString::convStringMBToWC(wchar_t* dst,
const char* src, UInt32 n_param, bool* errors)
{
std::lock_guard<std::mutex> lock(s_mutex);
ptrdiff_t n = (ptrdiff_t)n_param; // fix compiler warning
ptrdiff_t len = 0;
wchar_t dummy;
bool dummyErrors;
if (errors == NULL) {
errors = &dummyErrors;
}
if (dst == NULL) {
for (const char* scan = src; n > 0; ) {
ptrdiff_t mblen = mbtowc(&dummy, scan, n);
switch (mblen) {
case -2:
// incomplete last character. convert to unknown character.
*errors = true;
len += 1;
n = 0;
break;
case -1:
// invalid character. count one unknown character and
// start at the next byte.
*errors = true;
len += 1;
scan += 1;
n -= 1;
break;
case 0:
len += 1;
scan += 1;
n -= 1;
break;
default:
// normal character
len += 1;
scan += mblen;
n -= mblen;
break;
}
}
}
else {
wchar_t* dst0 = dst;
for (const char* scan = src; n > 0; ++dst) {
ptrdiff_t mblen = mbtowc(dst, scan, n);
switch (mblen) {
case -2:
// incomplete character. convert to unknown character.
*errors = true;
*dst = (wchar_t)0xfffd;
n = 0;
break;
case -1:
// invalid character. count one unknown character and
// start at the next byte.
*errors = true;
*dst = (wchar_t)0xfffd;
scan += 1;
n -= 1;
break;
case 0:
*dst = (wchar_t)0x0000;
scan += 1;
n -= 1;
break;
default:
// normal character
scan += mblen;
n -= mblen;
break;
}
}
len = dst - dst0;
}
return (int)len;
}
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