PclZip::privReadFileHeader PHP Method

    public function privReadFileHeader(&$p_header)
    {
        $v_result = 1;
        // ----- Read the 4 bytes signature
        $v_binary_data = @fread($this->zip_fd, 4);
        $v_data = unpack('Vid', $v_binary_data);
        // ----- Check signature
        if ($v_data['id'] != 0x4034b50) {
            // ----- Error log
            PclZip::privErrorLog(PCLZIP_ERR_BAD_FORMAT, 'Invalid archive structure');
            // ----- Return
            return PclZip::errorCode();
        }
        // ----- Read the first 42 bytes of the header
        $v_binary_data = fread($this->zip_fd, 26);
        // ----- Look for invalid block size
        if (strlen($v_binary_data) != 26) {
            $p_header['filename'] = '';
            $p_header['status'] = 'invalid_header';
            // ----- Error log
            PclZip::privErrorLog(PCLZIP_ERR_BAD_FORMAT, 'Invalid block size : ' . strlen($v_binary_data));
            // ----- Return
            return PclZip::errorCode();
        }
        // ----- Extract the values
        $v_data = unpack('vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $v_binary_data);
        // ----- Get filename
        $p_header['filename'] = fread($this->zip_fd, $v_data['filename_len']);
        // ----- Get extra_fields
        if ($v_data['extra_len'] != 0) {
            $p_header['extra'] = fread($this->zip_fd, $v_data['extra_len']);
        } else {
            $p_header['extra'] = '';
        }
        // ----- Extract properties
        $p_header['version_extracted'] = $v_data['version'];
        $p_header['compression'] = $v_data['compression'];
        $p_header['size'] = $v_data['size'];
        $p_header['compressed_size'] = $v_data['compressed_size'];
        $p_header['crc'] = $v_data['crc'];
        $p_header['flag'] = $v_data['flag'];
        $p_header['filename_len'] = $v_data['filename_len'];
        // ----- Recuperate date in UNIX format
        $p_header['mdate'] = $v_data['mdate'];
        $p_header['mtime'] = $v_data['mtime'];
        if ($p_header['mdate'] && $p_header['mtime']) {
            // ----- Extract time
            $v_hour = ($p_header['mtime'] & 0xf800) >> 11;
            $v_minute = ($p_header['mtime'] & 0x7e0) >> 5;
            $v_seconde = ($p_header['mtime'] & 0x1f) * 2;
            // ----- Extract date
            $v_year = (($p_header['mdate'] & 0xfe00) >> 9) + 1980;
            $v_month = ($p_header['mdate'] & 0x1e0) >> 5;
            $v_day = $p_header['mdate'] & 0x1f;
            // ----- Get UNIX date format
            $p_header['mtime'] = @mktime($v_hour, $v_minute, $v_seconde, $v_month, $v_day, $v_year);
        } else {
            $p_header['mtime'] = time();
        }
        // TBC
        //for(reset($v_data); $key = key($v_data); next($v_data)) {
        //}
        // ----- Set the stored filename
        $p_header['stored_filename'] = $p_header['filename'];
        // ----- Set the status field
        $p_header['status'] = 'ok';
        // ----- Return
        return $v_result;
    }