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/* |
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Copyright (C) 2005-2014 Sergey A. Tachenov |
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|
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This file is part of QuaZIP. |
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|
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QuaZIP is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License as published by |
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the Free Software Foundation, either version 2.1 of the License, or |
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(at your option) any later version. |
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|
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QuaZIP is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License for more details. |
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|
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You should have received a copy of the GNU Lesser General Public License |
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along with QuaZIP. If not, see <http://www.gnu.org/licenses/>. |
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|
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See COPYING file for the full LGPL text. |
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|
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Original ZIP package is copyrighted by Gilles Vollant and contributors, |
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see quazip/(un)zip.h files for details. Basically it's the zlib license. |
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*/ |
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|
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#include <QFile> |
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|
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#include "quagzipfile.h" |
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|
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/// \cond internal |
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class QuaGzipFilePrivate { |
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friend class QuaGzipFile; |
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QString fileName; |
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gzFile gzd; |
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inline QuaGzipFilePrivate(): gzd(NULL) {} |
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inline QuaGzipFilePrivate(const QString &fileName): |
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fileName(fileName), gzd(NULL) {} |
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template<typename FileId> bool open(FileId id, |
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QIODevice::OpenMode mode, QString &error); |
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gzFile open(int fd, const char *modeString); |
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gzFile open(const QString &name, const char *modeString); |
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}; |
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|
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gzFile QuaGzipFilePrivate::open(const QString &name, const char *modeString) |
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{ |
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return gzopen(QFile::encodeName(name).constData(), modeString); |
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} |
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|
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gzFile QuaGzipFilePrivate::open(int fd, const char *modeString) |
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{ |
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return gzdopen(fd, modeString); |
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} |
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|
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template<typename FileId> |
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bool QuaGzipFilePrivate::open(FileId id, QIODevice::OpenMode mode, |
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QString &error) |
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{ |
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char modeString[2]; |
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modeString[0] = modeString[1] = '\0'; |
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if ((mode & QIODevice::Append) != 0) { |
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error = QuaGzipFile::trUtf8("QIODevice::Append is not " |
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"supported for GZIP"); |
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return false; |
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} |
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if ((mode & QIODevice::ReadOnly) != 0 |
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&& (mode & QIODevice::WriteOnly) != 0) { |
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error = QuaGzipFile::trUtf8("Opening gzip for both reading" |
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" and writing is not supported"); |
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return false; |
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} else if ((mode & QIODevice::ReadOnly) != 0) { |
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modeString[0] = 'r'; |
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} else if ((mode & QIODevice::WriteOnly) != 0) { |
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modeString[0] = 'w'; |
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} else { |
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error = QuaGzipFile::trUtf8("You can open a gzip either for reading" |
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" or for writing. Which is it?"); |
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return false; |
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} |
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gzd = open(id, modeString); |
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if (gzd == NULL) { |
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error = QuaGzipFile::trUtf8("Could not gzopen() file"); |
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return false; |
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} |
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return true; |
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} |
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/// \endcond |
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|
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QuaGzipFile::QuaGzipFile(): |
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d(new QuaGzipFilePrivate()) |
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{ |
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} |
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|
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QuaGzipFile::QuaGzipFile(QObject *parent): |
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QIODevice(parent), |
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d(new QuaGzipFilePrivate()) |
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{ |
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} |
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|
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QuaGzipFile::QuaGzipFile(const QString &fileName, QObject *parent): |
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QIODevice(parent), |
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d(new QuaGzipFilePrivate(fileName)) |
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{ |
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} |
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|
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QuaGzipFile::~QuaGzipFile() |
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{ |
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if (isOpen()) { |
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close(); |
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} |
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delete d; |
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} |
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|
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void QuaGzipFile::setFileName(const QString& fileName) |
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{ |
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d->fileName = fileName; |
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} |
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|
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QString QuaGzipFile::getFileName() const |
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{ |
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return d->fileName; |
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} |
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|
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bool QuaGzipFile::isSequential() const |
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{ |
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return true; |
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} |
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|
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bool QuaGzipFile::open(QIODevice::OpenMode mode) |
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{ |
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QString error; |
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if (!d->open(d->fileName, mode, error)) { |
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setErrorString(error); |
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return false; |
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} |
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return QIODevice::open(mode); |
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} |
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|
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bool QuaGzipFile::open(int fd, QIODevice::OpenMode mode) |
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{ |
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QString error; |
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if (!d->open(fd, mode, error)) { |
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setErrorString(error); |
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return false; |
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} |
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return QIODevice::open(mode); |
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} |
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|
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bool QuaGzipFile::flush() |
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{ |
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return gzflush(d->gzd, Z_SYNC_FLUSH) == Z_OK; |
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} |
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|
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void QuaGzipFile::close() |
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{ |
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QIODevice::close(); |
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gzclose(d->gzd); |
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} |
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|
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qint64 QuaGzipFile::readData(char *data, qint64 maxSize) |
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{ |
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return gzread(d->gzd, (voidp)data, (unsigned)maxSize); |
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} |
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|
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qint64 QuaGzipFile::writeData(const char *data, qint64 maxSize) |
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{ |
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if (maxSize == 0) |
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return 0; |
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int written = gzwrite(d->gzd, (voidp)data, (unsigned)maxSize); |
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if (written == 0) |
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return -1; |
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else |
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return written; |
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} |
