//! @brief extract currently opened archive
//! @brief dest path to extract archive to, can be filename when extracting a
//! single file.
//! @brief file file to extract from archive, full archive if empty.
//! @return true on success, false otherwise
bool ZipUtil::extractArchive(QString& dest, QString file)
{
qDebug() << "[ZipUtil] extractArchive" << dest << file;
bool result = true;
if(!m_zip) {
return false;
}
QuaZipFile *currentFile = new QuaZipFile(m_zip);
int entries = m_zip->getEntriesCount();
int current = 0;
// construct the filename when extracting a single file from an archive.
// if the given destination is a full path use it as output name,
// otherwise use it as path to place the file as named in the archive.
QString singleoutfile;
if(!file.isEmpty() && QFileInfo(dest).isDir()) {
singleoutfile = dest + "/" + file;
}
else if(!file.isEmpty()){
singleoutfile = dest;
}
for(bool more = m_zip->goToFirstFile(); more; more = m_zip->goToNextFile())
{
++current;
// if the entry is a path ignore it. Path existence is ensured separately.
if(m_zip->getCurrentFileName().split("/").last() == "")
continue;
// some tools set the MS-DOS file attributes. Check those for D flag,
// since in some cases a folder entry does not end with a /
QuaZipFileInfo fi;
currentFile->getFileInfo(&fi);
if(fi.externalAttr & 0x10) // FAT entry bit 4 indicating directory
continue;
QString outfilename;
if(!singleoutfile.isEmpty()
&& QFileInfo(m_zip->getCurrentFileName()).fileName() == file) {
outfilename = singleoutfile;
}
else if(singleoutfile.isEmpty()) {
outfilename = dest + "/" + m_zip->getCurrentFileName();
}
if(outfilename.isEmpty())
continue;
QFile outputFile(outfilename);
// make sure the output path exists
if(!QDir().mkpath(QFileInfo(outfilename).absolutePath())) {
result = false;
emit logItem(tr("Creating output path failed"), LOGERROR);
qDebug() << "[ZipUtil] creating output path failed for:"
<< outfilename;
break;
}
if(!outputFile.open(QFile::WriteOnly)) {
result = false;
emit logItem(tr("Creating output file failed"), LOGERROR);
qDebug() << "[ZipUtil] creating output file failed:"
<< outfilename;
break;
}
currentFile->open(QIODevice::ReadOnly);
outputFile.write(currentFile->readAll());
if(currentFile->getZipError() != UNZ_OK) {
result = false;
emit logItem(tr("Error during Zip operation"), LOGERROR);
qDebug() << "[ZipUtil] QuaZip error:" << currentFile->getZipError()
<< "on file" << currentFile->getFileName();
break;
}
currentFile->close();
outputFile.close();
emit logProgress(current, entries);
}
delete currentFile;
emit logProgress(1, 1);
return result;
}
