Source for file Command.php
Documentation is available at Command.php
* PEAR_Command, command pattern class
* @author Stig Bakken <ssb@php.net>
* @author Greg Beaver <cellog@php.net>
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Command.php 313023 2011-07-06 19:17:11Z dufuz $
* @link http://pear.php.net/package/PEAR
* @since File available since Release 0.1
* Needed for error handling
require_once 'PEAR/Frontend.php';
require_once 'PEAR/XMLParser.php';
* List of commands and what classes they are implemented in.
* @var array command => implementing class
$GLOBALS['_PEAR_Command_commandlist'] = array ();
* List of commands and their descriptions
* @var array command => description
$GLOBALS['_PEAR_Command_commanddesc'] = array ();
* List of shortcuts to common commands.
* @var array shortcut => command
$GLOBALS['_PEAR_Command_shortcuts'] = array ();
* Array of command objects
* @var array class => object
$GLOBALS['_PEAR_Command_objects'] = array ();
* PEAR command class, a simple factory class for administrative
* How to implement command classes:
* - The class must be called PEAR_Command_Nnn, installed in the
* "PEAR/Common" subdir, with a method called getCommands() that
* returns an array of the commands implemented by the class (see
* PEAR/Command/Install.php for an example).
* - The class must implement a run() function that is called with three
* (array) assoc array with options, freely defined by each
* (array) list of the other parameters
* The run() function returns a PEAR_CommandResponse object. Use
* these methods to get information:
* int getStatus() Returns PEAR_COMMAND_(SUCCESS|FAILURE|PARTIAL)
* *_PARTIAL means that you need to issue at least
* one more command to complete the operation
* (used for example for validation steps).
* string getMessage() Returns a message for the user. Remember,
* no HTML or other interface-specific markup.
* If something unexpected happens, run() returns a PEAR error.
* - DON'T OUTPUT ANYTHING! Return text for output instead.
* - DON'T USE HTML! The text you return will be used from both Gtk,
* web and command-line interfaces, so for now, keep everything to
* - DON'T USE EXIT OR DIE! Always use pear errors. From static
* classes do PEAR::raiseError(), from other classes do
* @author Stig Bakken <ssb@php.net>
* @author Greg Beaver <cellog@php.net>
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version Release: 1.9.4
* @link http://pear.php.net/package/PEAR
* @since Class available since Release 0.1
* Get the right object for executing a command.
* @param string $command The name of the command
* @param object $config Instance of PEAR_Config object
* @return object the command object or a PEAR error
function &factory($command, &$config)
if (empty ($GLOBALS['_PEAR_Command_commandlist'])) {
if (isset ($GLOBALS['_PEAR_Command_shortcuts'][$command])) {
$command = $GLOBALS['_PEAR_Command_shortcuts'][$command];
if (!isset ($GLOBALS['_PEAR_Command_commandlist'][$command])) {
$class = $GLOBALS['_PEAR_Command_commandlist'][$command];
require_once $GLOBALS['_PEAR_Command_objects'][$class];
$obj = &new $class($ui, $config);
$class = $GLOBALS['_PEAR_Command_commandlist'][$command];
require_once $GLOBALS['_PEAR_Command_objects'][$class];
$obj = &new $class($ui, $config);
// {{{ & getFrontendObject()
* Get instance of frontend object.
* @return object|PEAR_Error
// {{{ & setFrontendClass()
* Load current frontend class.
* @param string $uiclass Name of class implementing the frontend
* @return object the frontend object, or a PEAR error
* @param string $uitype Name of the frontend type (for example "CLI")
* @return object the frontend object, or a PEAR error
$uiclass = 'PEAR_Frontend_' . $uitype;
// {{{ registerCommands()
* Scan through the Command directory looking for classes
* and see what commands they implement.
* @param bool (optional) if FALSE (default), the new list of
* commands should replace the current one. If TRUE,
* new entries will be merged with old.
* @param string (optional) where (what directory) to look for
* classes, defaults to the Command subdirectory of
* the directory from where this file (__FILE__) is
* @return bool TRUE on success, a PEAR error on failure
$dir = dirname(__FILE__ ) . '/Command';
return PEAR::raiseError(" registerCommands: opendir($dir) '$dir' does not exist or is not a directory" );
$GLOBALS['_PEAR_Command_commandlist'] = array ();
if ($file{0 } == '.' || substr($file, -4 ) != '.xml') {
$class = "PEAR_Command_" . $f;
if (empty ($GLOBALS['_PEAR_Command_objects'][$class])) {
$GLOBALS['_PEAR_Command_objects'][$class] = " $dir/" . $f . '.php';
$implements = $parser->getData ();
foreach ($implements as $command => $desc) {
if ($command == 'attribs') {
if (isset ($GLOBALS['_PEAR_Command_commandlist'][$command])) {
return PEAR::raiseError('Command "' . $command . '" already registered in ' .
'class "' . $GLOBALS['_PEAR_Command_commandlist'][$command] . '"');
$GLOBALS['_PEAR_Command_commandlist'][$command] = $class;
$GLOBALS['_PEAR_Command_commanddesc'][$command] = $desc['summary'];
if (isset ($desc['shortcut'])) {
$shortcut = $desc['shortcut'];
if (isset ($GLOBALS['_PEAR_Command_shortcuts'][$shortcut])) {
return PEAR::raiseError('Command shortcut "' . $shortcut . '" already ' .
'registered to command "' . $command . '" in class "' .
$GLOBALS['_PEAR_Command_commandlist'][$command] . '"');
$GLOBALS['_PEAR_Command_shortcuts'][$shortcut] = $command;
if (isset ($desc['options']) && $desc['options']) {
foreach ($desc['options'] as $oname => $option) {
if (isset ($option['shortopt']) && strlen($option['shortopt']) > 1 ) {
$option['shortopt'] . '" must be ' .
'only 1 character in Command "' . $command . '" in class "' .
ksort($GLOBALS['_PEAR_Command_shortcuts']);
ksort($GLOBALS['_PEAR_Command_commandlist']);
* Get the list of currently supported commands, and what
* classes implement them.
* @return array command => implementing class
if (empty ($GLOBALS['_PEAR_Command_commandlist'])) {
return $GLOBALS['_PEAR_Command_commandlist'];
* Get the list of command shortcuts.
* @return array shortcut => command
if (empty ($GLOBALS['_PEAR_Command_shortcuts'])) {
return $GLOBALS['_PEAR_Command_shortcuts'];
* Compiles arguments for getopt.
* @param string $command command to get optstring for
* @param string $short_args (reference) short getopt format
* @param array $long_args (reference) long getopt format
if (empty ($GLOBALS['_PEAR_Command_commandlist'])) {
if (isset ($GLOBALS['_PEAR_Command_shortcuts'][$command])) {
$command = $GLOBALS['_PEAR_Command_shortcuts'][$command];
if (!isset ($GLOBALS['_PEAR_Command_commandlist'][$command])) {
return $obj->getGetoptArgs ($command, $short_args, $long_args);
* Get description for a command.
* @param string $command Name of the command
* @return string command description
if (!isset ($GLOBALS['_PEAR_Command_commanddesc'][$command])) {
return $GLOBALS['_PEAR_Command_commanddesc'][$command];
* @param string $command Name of the command to return help for
if (isset ($GLOBALS['_PEAR_Command_shortcuts'][$command])) {
$command = $GLOBALS['_PEAR_Command_shortcuts'][$command];
if (isset ($cmds[$command])) {
return $obj->getHelp ($command);
Documentation generated on Wed, 06 Jul 2011 23:30:33 +0000 by phpDocumentor 1.4.3. PEAR Logo Copyright © PHP Group 2004.
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