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#include <qvzip.h>
int main(int argc, char *argv[])
{
        if  (argc<2) return 1;
        QVZipReader zip(argv[1]); // имя файла архива
        zip.extractAll(argv[2]); // куда извлекать
        zip.close();
        return 0;
}

#if defined(Q_OS_WIN)
....
#  define S_ISDIR(x) ((x) & 0040000) > 0
#  define S_ISREG(x) ((x) & 0170000) == S_IFREG
#  define S_IFLNK 020000
#  define S_ISLNK(x) ((x) & S_IFLNK) > 0
...

$ dpkg -s zip | grep -i version
Version: 3.0-3ppa2

"test/" 1 0 0 0 
"test/pict.jpg" 0 1 0 9229 
"test/test.odt" 0 1 0 18527 

name = QDir::fromNativeSeparators(name);
if (!name.endsWith(QLatin1Char('/'))
    name += QLatin1Char('/');

#ifndef FILE_ATTRIBUTE_READONLY
#  define FILE_ATTRIBUTE_READONLY 0x1
#endif
#ifndef FILE_ATTRIBUTE_DIRECTORY
#  define FILE_ATTRIBUTE_DIRECTORY 0x10
#endif

enum HostOS {
    HostFAT      = 0,
    HostAMIGA    = 1,
    HostVMS      = 2,  // VAX/VMS
    HostUnix     = 3,
    HostVM_CMS   = 4,
    HostAtari    = 5,  // what if it's a minix filesystem? [cjh]
    HostHPFS     = 6,  // filesystem used by OS/2 (and NT 3.x)
    HostMac      = 7,
    HostZ_System = 8,
    HostCPM      = 9,
    HostTOPS20   = 10, // pkzip 2.50 NTFS
    HostNTFS     = 11, // filesystem used by Windows NT
    HostQDOS     = 12, // SMS/QDOS
    HostAcorn    = 13, // Archimedes Acorn RISC OS
    HostVFAT     = 14, // filesystem used by Windows 95, NT
    HostMVS      = 15,
    HostBeOS     = 16, // hybrid POSIX/database filesystem
    HostTandem   = 17,
    HostOS400    = 18,
    HostOSX      = 19
};

void QZipPrivate::fillFileInfo(int index, QZipReader::FileInfo &fileInfo) const
{
    FileHeader header = fileHeaders.at(index);
    fileInfo.filePath = QString::fromLocal8Bit(header.file_name);
    quint32 mode = readUInt(header.h.external_file_attributes);
    const HostOS hostOS = HostOS(readUShort(header.h.version_made) >> 8);
    switch (hostOS) {
    case HostUnix:
        mode = (mode >> 16) & 0xffff;
        if (S_ISDIR(mode))
            fileInfo.isDir = true;
        else if (S_ISREG(mode))
            fileInfo.isFile = true;
        else if (S_ISLNK(mode))
            fileInfo.isSymLink = true;
        fileInfo.permissions = modeToPermissions(mode);
        break;
    case HostFAT:
    case HostNTFS:
    case HostHPFS:
    case HostVFAT:
        fileInfo.permissions |= QFile::ReadOwner | QFile::ReadUser | QFile::ReadGroup | QFile::ReadOther;
        if ((mode & FILE_ATTRIBUTE_READONLY) == 0)
            fileInfo.permissions |= QFile::WriteOwner | QFile::WriteUser | QFile::WriteGroup | QFile::WriteOther;
        if ((mode & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY) {
            fileInfo.isDir = true;
            fileInfo.permissions |= QFile::ExeOwner | QFile::ExeUser | QFile::ExeGroup | QFile::ExeOther;
        } else {
            fileInfo.isFile = true;
        }
        break;
    default:
        return; // we don't support anything else
    }
    fileInfo.crc32 = readUInt(header.h.crc_32);
    fileInfo.size = readUInt(header.h.uncompressed_size);
    fileInfo.lastModified = readMSDosDate(header.h.last_mod_file);
}

"tests/" 1 1 0 0 
"tests/img/" 1 1 0 0 
"tests/tests.xml" 0 1 0 7512 

$ ls  -R ~/Desktop/t/
/home/nortt/Desktop/t/:
tests

/home/nortt/Desktop/t/tests:
img

/home/nortt/Desktop/t/tests/img: