\JArchiveZip

ZIP format adapter for the JArchive class

The ZIP compression code is partially based on code from:
Eric Mueller <eric@themepark.com>
http://www.zend.com/codex.php?id=535&single=1

Deins125 <webmaster@atlant.ru>
http://www.zend.com/codex.php?id=470&single=1

The ZIP compression date code is partially based on code from
Peter Listiak <mlady@users.sourceforge.net>

This class is inspired from and draws heavily in code and concept from the Compress package of
The Horde Project <http://www.horde.org>

Synopsis

class JArchiveZip implements JArchiveExtractable {

• // members
• private  $_methods;
• private  $_ctrlDirHeader;
• private  $_ctrlDirEnd;
• private  $_fileHeader;
• private  $_data;
• private  $_metadata;
• // methods
• public boolean create()
• public boolean extract()
• public static boolean isSupported()
• public static boolean hasNativeSupport()
• public boolean checkZipData()
• protected mixed extractCustom()
• protected boolean extractNative()
• private boolean _readZipInfo()
• private string _getFileData()
• protected int _unix2DOSTime()
• private void _addToZIPFile()
• private boolean _createZIPFile()
}


Hierarchy

Implements

• JArchiveExtractable

Tasks

Tasks

Line	Task
102+	Finish Implementation
586+	Review and finish implementation
697+	Review and finish implementation

Members

private

• $_ctrlDirEnd — string
  End of central directory record.
• $_ctrlDirHeader — string
  Beginning of central directory record.
• $_data — string
  ZIP file data buffer
• $_fileHeader — string
  Beginning of file contents.
• $_metadata — array
  ZIP file metadata array
• $_methods — array
  ZIP compression methods.

Methods

private

• _addToZIPFile() — Adds a "file" to the ZIP archive.
• _createZIPFile() — Creates the ZIP file.
• _getFileData() — Returns the file data for a file by offsest in the ZIP archive
• _readZipInfo() — Get the list of files/data from a ZIP archive buffer.

protected

• _unix2DOSTime() — Converts a UNIX timestamp to a 4-byte DOS date and time format (date in high 2-bytes, time in low 2-bytes allowing magnitude comparison).
• extractCustom() — Extract a ZIP compressed file to a given path using a php based algorithm that only requires zlib support
• extractNative() — Extract a ZIP compressed file to a given path using native php api calls for speed

public

• checkZipData() — Checks to see if the data is a valid ZIP file.
• create() — Create a ZIP compressed file from an array of file data.
• extract() — Extract a ZIP compressed file to a given path
• hasNativeSupport() — Method to determine if the server has native zip support for faster handling
• isSupported() — Tests whether this adapter can unpack files on this computer.