nextcloud-desktop/src/csync/std/c_utf8.cpp
2020-02-10 16:41:07 +01:00

127 lines
3.5 KiB
C++

/*
* cynapses libc functions
*
* Copyright (c) 2008-2013 by Andreas Schneider <asn@cryptomilk.org>
* Copyright (c) 2012-2013 by Klaas Freitag <freitag@owncloud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config_csync.h"
#include "c_utf8.h"
#ifdef _WIN32
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/types.h>
#include <wchar.h>
#include <windows.h>
#else
#include <QtCore/QTextCodec>
#include <QtCore/QFile>
#endif
#include "c_alloc.h"
#include "c_string.h"
#include "common/filesystembase.h"
/* Convert a locale String to UTF8 */
QByteArray c_utf8_from_locale(const mbchar_t *wstr)
{
if (wstr == nullptr) {
return QByteArray();
}
#ifdef _WIN32
QByteArray dst;
int size_needed;
size_t len;
len = wcslen(wstr);
/* Call once to get the required size. */
size_needed = WideCharToMultiByte(CP_UTF8, 0, wstr, len, NULL, 0, NULL, NULL);
if (size_needed > 0) {
dst.resize(size_needed);
WideCharToMultiByte(CP_UTF8, 0, wstr, len, dst.data(), size_needed, NULL, NULL);
}
return dst;
#else
auto codec = QTextCodec::codecForLocale();
#ifndef __APPLE__
if (codec->mibEnum() == 106) { // UTF-8
// Optimisation for UTF-8: no need to convert to QString.
// We still need to do it for mac because of normalization
return QByteArray(wstr);
}
#endif
QTextDecoder dec(codec);
QString s = dec.toUnicode(wstr, qstrlen(wstr));
if (s.isEmpty() || dec.hasFailure()) {
/* Conversion error: since we can't report error from this function, just return the original
string. We take care of invalid utf-8 in SyncEngine::treewalkFile */
return QByteArray(wstr);
}
#ifdef __APPLE__
s = s.normalized(QString::NormalizationForm_C);
#endif
return std::move(s).toUtf8();
#endif
}
extern "C" {
/* Convert a an UTF8 string to locale */
mbchar_t* c_utf8_string_to_locale(const char *str)
{
if (str == nullptr ) {
return nullptr;
}
#ifdef _WIN32
mbchar_t *dst = NULL;
size_t len;
int size_needed;
len = strlen(str);
size_needed = MultiByteToWideChar(CP_UTF8, 0, str, len, NULL, 0);
if (size_needed > 0) {
int size_char = (size_needed + 1) * sizeof(mbchar_t);
dst = (mbchar_t*)c_malloc(size_char);
memset((void*)dst, 0, size_char);
MultiByteToWideChar(CP_UTF8, 0, str, -1, dst, size_needed);
}
return dst;
#else
return c_strdup(QFile::encodeName(QString::fromUtf8(str)));
#endif
}
mbchar_t* c_utf8_path_to_locale(const char *str)
{
if( str == nullptr ) {
return nullptr;
} else {
#ifdef _WIN32
QByteArray unc_str = OCC::FileSystem::pathtoUNC(QByteArray::fromRawData(str, strlen(str)));
mbchar_t *dst = c_utf8_string_to_locale(unc_str);
return dst;
#else
return c_utf8_string_to_locale(str);
#endif
}
}
}