MultiMC5/quazip/quazip.cpp

555 lines
14 KiB
C++

/*
Copyright (C) 2005-2011 Sergey A. Tachenov
This program 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 of the License, or (at
your option) any later version.
This program 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 program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
See COPYING file for the full LGPL text.
Original ZIP package is copyrighted by Gilles Vollant, see
quazip/(un)zip.h files for details, basically it's zlib license.
**/
#include <QtCore/QFile>
#include <QtCore/QFlags>
#include "quazip.h"
/// All the internal stuff for the QuaZip class.
/**
\internal
This class keeps all the private stuff for the QuaZip class so it can
be changed without breaking binary compatibility, according to the
Pimpl idiom.
*/
class QuaZipPrivate {
friend class QuaZip;
private:
/// The pointer to the corresponding QuaZip instance.
QuaZip *q;
/// The codec for file names.
QTextCodec *fileNameCodec;
/// The codec for comments.
QTextCodec *commentCodec;
/// The archive file name.
QString zipName;
/// The device to access the archive.
QIODevice *ioDevice;
/// The global comment.
QString comment;
/// The open mode.
QuaZip::Mode mode;
union {
/// The internal handle for UNZIP modes.
unzFile unzFile_f;
/// The internal handle for ZIP modes.
zipFile zipFile_f;
};
/// Whether a current file is set.
bool hasCurrentFile_f;
/// The last error.
int zipError;
/// Whether \ref QuaZip::setDataDescriptorWritingEnabled() "the data descriptor writing mode" is enabled.
bool dataDescriptorWritingEnabled;
/// The constructor for the corresponding QuaZip constructor.
inline QuaZipPrivate(QuaZip *q):
q(q),
fileNameCodec(QTextCodec::codecForLocale()),
commentCodec(QTextCodec::codecForLocale()),
ioDevice(NULL),
mode(QuaZip::mdNotOpen),
hasCurrentFile_f(false),
zipError(UNZ_OK),
dataDescriptorWritingEnabled(true) {}
/// The constructor for the corresponding QuaZip constructor.
inline QuaZipPrivate(QuaZip *q, const QString &zipName):
q(q),
fileNameCodec(QTextCodec::codecForLocale()),
commentCodec(QTextCodec::codecForLocale()),
zipName(zipName),
ioDevice(NULL),
mode(QuaZip::mdNotOpen),
hasCurrentFile_f(false),
zipError(UNZ_OK),
dataDescriptorWritingEnabled(true) {}
/// The constructor for the corresponding QuaZip constructor.
inline QuaZipPrivate(QuaZip *q, QIODevice *ioDevice):
q(q),
fileNameCodec(QTextCodec::codecForLocale()),
commentCodec(QTextCodec::codecForLocale()),
ioDevice(ioDevice),
mode(QuaZip::mdNotOpen),
hasCurrentFile_f(false),
zipError(UNZ_OK),
dataDescriptorWritingEnabled(true) {}
/// Returns either a list of file names or a list of QuaZipFileInfo.
template<typename TFileInfo>
bool getFileInfoList(QList<TFileInfo> *result) const;
};
QuaZip::QuaZip():
p(new QuaZipPrivate(this))
{
}
QuaZip::QuaZip(const QString& zipName):
p(new QuaZipPrivate(this, zipName))
{
}
QuaZip::QuaZip(QIODevice *ioDevice):
p(new QuaZipPrivate(this, ioDevice))
{
}
QuaZip::~QuaZip()
{
if(isOpen())
close();
delete p;
}
bool QuaZip::open(Mode mode, zlib_filefunc_def* ioApi)
{
p->zipError=UNZ_OK;
if(isOpen()) {
qWarning("QuaZip::open(): ZIP already opened");
return false;
}
QIODevice *ioDevice = p->ioDevice;
if (ioDevice == NULL) {
if (p->zipName.isEmpty()) {
qWarning("QuaZip::open(): set either ZIP file name or IO device first");
return false;
} else {
ioDevice = new QFile(p->zipName);
}
}
switch(mode) {
case mdUnzip:
p->unzFile_f=unzOpen2(ioDevice, ioApi);
if(p->unzFile_f!=NULL) {
p->mode=mode;
p->ioDevice = ioDevice;
return true;
} else {
p->zipError=UNZ_OPENERROR;
if (!p->zipName.isEmpty())
delete ioDevice;
return false;
}
case mdCreate:
case mdAppend:
case mdAdd:
p->zipFile_f=zipOpen2(ioDevice,
mode==mdCreate?APPEND_STATUS_CREATE:
mode==mdAppend?APPEND_STATUS_CREATEAFTER:
APPEND_STATUS_ADDINZIP,
NULL,
ioApi);
if(p->zipFile_f!=NULL) {
p->mode=mode;
p->ioDevice = ioDevice;
return true;
} else {
p->zipError=UNZ_OPENERROR;
if (!p->zipName.isEmpty())
delete ioDevice;
return false;
}
default:
qWarning("QuaZip::open(): unknown mode: %d", (int)mode);
if (!p->zipName.isEmpty())
delete ioDevice;
return false;
break;
}
}
void QuaZip::close()
{
p->zipError=UNZ_OK;
switch(p->mode) {
case mdNotOpen:
qWarning("QuaZip::close(): ZIP is not open");
return;
case mdUnzip:
p->zipError=unzClose(p->unzFile_f);
break;
case mdCreate:
case mdAppend:
case mdAdd:
p->zipError=zipClose(p->zipFile_f,
p->comment.isNull() ? NULL
: p->commentCodec->fromUnicode(p->comment).constData());
break;
default:
qWarning("QuaZip::close(): unknown mode: %d", (int)p->mode);
return;
}
// opened by name, need to delete the internal IO device
if (!p->zipName.isEmpty()) {
delete p->ioDevice;
p->ioDevice = NULL;
}
if(p->zipError==UNZ_OK)
p->mode=mdNotOpen;
}
void QuaZip::setZipName(const QString& zipName)
{
if(isOpen()) {
qWarning("QuaZip::setZipName(): ZIP is already open!");
return;
}
p->zipName=zipName;
p->ioDevice = NULL;
}
void QuaZip::setIoDevice(QIODevice *ioDevice)
{
if(isOpen()) {
qWarning("QuaZip::setIoDevice(): ZIP is already open!");
return;
}
p->ioDevice = ioDevice;
p->zipName = QString();
}
int QuaZip::getEntriesCount()const
{
QuaZip *fakeThis=(QuaZip*)this; // non-const
fakeThis->p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::getEntriesCount(): ZIP is not open in mdUnzip mode");
return -1;
}
unz_global_info globalInfo;
if((fakeThis->p->zipError=unzGetGlobalInfo(p->unzFile_f, &globalInfo))!=UNZ_OK)
return p->zipError;
return (int)globalInfo.number_entry;
}
QString QuaZip::getComment()const
{
QuaZip *fakeThis=(QuaZip*)this; // non-const
fakeThis->p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::getComment(): ZIP is not open in mdUnzip mode");
return QString();
}
unz_global_info globalInfo;
QByteArray comment;
if((fakeThis->p->zipError=unzGetGlobalInfo(p->unzFile_f, &globalInfo))!=UNZ_OK)
return QString();
comment.resize(globalInfo.size_comment);
if((fakeThis->p->zipError=unzGetGlobalComment(p->unzFile_f, comment.data(), comment.size())) < 0)
return QString();
fakeThis->p->zipError = UNZ_OK;
return p->commentCodec->toUnicode(comment);
}
bool QuaZip::setCurrentFile(const QString& fileName, CaseSensitivity cs)
{
p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::setCurrentFile(): ZIP is not open in mdUnzip mode");
return false;
}
if(fileName.isEmpty()) {
p->hasCurrentFile_f=false;
return true;
}
// Unicode-aware reimplementation of the unzLocateFile function
if(p->unzFile_f==NULL) {
p->zipError=UNZ_PARAMERROR;
return false;
}
if(fileName.length()>MAX_FILE_NAME_LENGTH) {
p->zipError=UNZ_PARAMERROR;
return false;
}
bool sens = convertCaseSensitivity(cs) == Qt::CaseSensitive;
QString lower, current;
if(!sens) lower=fileName.toLower();
p->hasCurrentFile_f=false;
for(bool more=goToFirstFile(); more; more=goToNextFile()) {
current=getCurrentFileName();
if(current.isEmpty()) return false;
if(sens) {
if(current==fileName) break;
} else {
if(current.toLower()==lower) break;
}
}
return p->hasCurrentFile_f;
}
bool QuaZip::goToFirstFile()
{
p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::goToFirstFile(): ZIP is not open in mdUnzip mode");
return false;
}
p->zipError=unzGoToFirstFile(p->unzFile_f);
p->hasCurrentFile_f=p->zipError==UNZ_OK;
return p->hasCurrentFile_f;
}
bool QuaZip::goToNextFile()
{
p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::goToFirstFile(): ZIP is not open in mdUnzip mode");
return false;
}
p->zipError=unzGoToNextFile(p->unzFile_f);
p->hasCurrentFile_f=p->zipError==UNZ_OK;
if(p->zipError==UNZ_END_OF_LIST_OF_FILE)
p->zipError=UNZ_OK;
return p->hasCurrentFile_f;
}
bool QuaZip::getCurrentFileInfo(QuaZipFileInfo *info)const
{
QuaZip *fakeThis=(QuaZip*)this; // non-const
fakeThis->p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::getCurrentFileInfo(): ZIP is not open in mdUnzip mode");
return false;
}
unz_file_info info_z;
QByteArray fileName;
QByteArray extra;
QByteArray comment;
if(info==NULL) return false;
if(!isOpen()||!hasCurrentFile()) return false;
if((fakeThis->p->zipError=unzGetCurrentFileInfo(p->unzFile_f, &info_z, NULL, 0, NULL, 0, NULL, 0))!=UNZ_OK)
return false;
fileName.resize(info_z.size_filename);
extra.resize(info_z.size_file_extra);
comment.resize(info_z.size_file_comment);
if((fakeThis->p->zipError=unzGetCurrentFileInfo(p->unzFile_f, NULL,
fileName.data(), fileName.size(),
extra.data(), extra.size(),
comment.data(), comment.size()))!=UNZ_OK)
return false;
info->versionCreated=info_z.version;
info->versionNeeded=info_z.version_needed;
info->flags=info_z.flag;
info->method=info_z.compression_method;
info->crc=info_z.crc;
info->compressedSize=info_z.compressed_size;
info->uncompressedSize=info_z.uncompressed_size;
info->diskNumberStart=info_z.disk_num_start;
info->internalAttr=info_z.internal_fa;
info->externalAttr=info_z.external_fa;
info->name=p->fileNameCodec->toUnicode(fileName);
info->comment=p->commentCodec->toUnicode(comment);
info->extra=extra;
info->dateTime=QDateTime(
QDate(info_z.tmu_date.tm_year, info_z.tmu_date.tm_mon+1, info_z.tmu_date.tm_mday),
QTime(info_z.tmu_date.tm_hour, info_z.tmu_date.tm_min, info_z.tmu_date.tm_sec));
return true;
}
QString QuaZip::getCurrentFileName()const
{
QuaZip *fakeThis=(QuaZip*)this; // non-const
fakeThis->p->zipError=UNZ_OK;
if(p->mode!=mdUnzip) {
qWarning("QuaZip::getCurrentFileName(): ZIP is not open in mdUnzip mode");
return QString();
}
if(!isOpen()||!hasCurrentFile()) return QString();
QByteArray fileName(MAX_FILE_NAME_LENGTH, 0);
if((fakeThis->p->zipError=unzGetCurrentFileInfo(p->unzFile_f, NULL, fileName.data(), fileName.size(),
NULL, 0, NULL, 0))!=UNZ_OK)
return QString();
return p->fileNameCodec->toUnicode(fileName.constData());
}
void QuaZip::setFileNameCodec(QTextCodec *fileNameCodec)
{
p->fileNameCodec=fileNameCodec;
}
void QuaZip::setFileNameCodec(const char *fileNameCodecName)
{
p->fileNameCodec=QTextCodec::codecForName(fileNameCodecName);
}
QTextCodec *QuaZip::getFileNameCodec()const
{
return p->fileNameCodec;
}
void QuaZip::setCommentCodec(QTextCodec *commentCodec)
{
p->commentCodec=commentCodec;
}
void QuaZip::setCommentCodec(const char *commentCodecName)
{
p->commentCodec=QTextCodec::codecForName(commentCodecName);
}
QTextCodec *QuaZip::getCommentCodec()const
{
return p->commentCodec;
}
QString QuaZip::getZipName() const
{
return p->zipName;
}
QIODevice *QuaZip::getIoDevice() const
{
if (!p->zipName.isEmpty()) // opened by name, using an internal QIODevice
return NULL;
return p->ioDevice;
}
QuaZip::Mode QuaZip::getMode()const
{
return p->mode;
}
bool QuaZip::isOpen()const
{
return p->mode!=mdNotOpen;
}
int QuaZip::getZipError() const
{
return p->zipError;
}
void QuaZip::setComment(const QString& comment)
{
p->comment=comment;
}
bool QuaZip::hasCurrentFile()const
{
return p->hasCurrentFile_f;
}
unzFile QuaZip::getUnzFile()
{
return p->unzFile_f;
}
zipFile QuaZip::getZipFile()
{
return p->zipFile_f;
}
void QuaZip::setDataDescriptorWritingEnabled(bool enabled)
{
p->dataDescriptorWritingEnabled = enabled;
}
bool QuaZip::isDataDescriptorWritingEnabled() const
{
return p->dataDescriptorWritingEnabled;
}
template<typename TFileInfo>
TFileInfo QuaZip_getFileInfo(QuaZip *zip, bool *ok);
template<>
QuaZipFileInfo QuaZip_getFileInfo(QuaZip *zip, bool *ok)
{
QuaZipFileInfo info;
*ok = zip->getCurrentFileInfo(&info);
return info;
}
template<>
QString QuaZip_getFileInfo(QuaZip *zip, bool *ok)
{
QString name = zip->getCurrentFileName();
*ok = !name.isEmpty();
return name;
}
template<typename TFileInfo>
bool QuaZipPrivate::getFileInfoList(QList<TFileInfo> *result) const
{
QuaZipPrivate *fakeThis=const_cast<QuaZipPrivate*>(this);
fakeThis->zipError=UNZ_OK;
if (mode!=QuaZip::mdUnzip) {
qWarning("QuaZip::getFileNameList/getFileInfoList(): "
"ZIP is not open in mdUnzip mode");
return false;
}
QString currentFile;
if (q->hasCurrentFile()) {
currentFile = q->getCurrentFileName();
}
if (q->goToFirstFile()) {
do {
bool ok;
result->append(QuaZip_getFileInfo<TFileInfo>(q, &ok));
if (!ok)
return false;
} while (q->goToNextFile());
}
if (zipError != UNZ_OK)
return false;
if (currentFile.isEmpty()) {
if (!q->goToFirstFile())
return false;
} else {
if (!q->setCurrentFile(currentFile))
return false;
}
return true;
}
QStringList QuaZip::getFileNameList() const
{
QStringList list;
if (p->getFileInfoList(&list))
return list;
else
return QStringList();
}
QList<QuaZipFileInfo> QuaZip::getFileInfoList() const
{
QList<QuaZipFileInfo> list;
if (p->getFileInfoList(&list))
return list;
else
return QList<QuaZipFileInfo>();
}
Qt::CaseSensitivity QuaZip::convertCaseSensitivity(QuaZip::CaseSensitivity cs)
{
if (cs == csDefault) {
#ifdef Q_WS_WIN
return Qt::CaseInsensitive;
#else
return Qt::CaseSensitive;
#endif
} else {
return cs == csSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive;
}
}