Source for file Command.php
Documentation is available at Command.php
// +----------------------------------------------------------------------+
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available through the world-wide-web at the following url: |
// | http://www.php.net/license/3_0.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Stig Bakken <ssb@php.net> |
// +----------------------------------------------------------------------+
// $Id: Command.php,v 1.24 2004/05/16 15:43:30 pajoye Exp $
* List of commands and what classes they are implemented in.
* @var array command => implementing class
$GLOBALS['_PEAR_Command_commandlist'] = 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 ();
* Which user interface class is being used.
$GLOBALS['_PEAR_Command_uiclass'] = 'PEAR_Frontend_CLI';
* Instance of $_PEAR_Command_uiclass.
$GLOBALS['_PEAR_Command_uiobject'] = null;
* 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
* 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'])) {
PEAR_Command ::registerCommands ();
if (isset ($GLOBALS['_PEAR_Command_shortcuts'][$command])) {
$command = $GLOBALS['_PEAR_Command_shortcuts'][$command];
if (!isset ($GLOBALS['_PEAR_Command_commandlist'][$command])) {
return PEAR ::raiseError (" unknown command `$command'" );
$class = $GLOBALS['_PEAR_Command_commandlist'][$command];
return PEAR ::raiseError (" unknown command `$command'" );
$ui = & PEAR_Command ::getFrontendObject ();
$obj = &new $class($ui, $config);
// {{{ & getFrontendObject()
* Get instance of frontend object.
function &getFrontendObject ()
if (empty ($GLOBALS['_PEAR_Command_uiobject'])) {
$GLOBALS['_PEAR_Command_uiobject'] = &new $GLOBALS['_PEAR_Command_uiclass'];
return $GLOBALS['_PEAR_Command_uiobject'];
// {{{ & setFrontendClass()
* Load current frontend class.
* @param string $uiclass Name of class implementing the frontend
* @return object the frontend object, or a PEAR error
function &setFrontendClass ($uiclass)
if (is_object($GLOBALS['_PEAR_Command_uiobject']) &&
is_a($GLOBALS['_PEAR_Command_uiobject'], $uiclass)) {
return $GLOBALS['_PEAR_Command_uiobject'];
if (PEAR_Command ::isIncludeable ($file)) {
// quick test to see if this class implements a few of the most
// important frontend methods
$GLOBALS['_PEAR_Command_uiobject'] = &$obj;
$GLOBALS['_PEAR_Command_uiclass'] = $uiclass;
$err = PEAR ::raiseError (" not a frontend class: $uiclass" );
$err = PEAR ::raiseError (" no such class: $uiclass" );
* @param string $path relative or absolute include path
function isIncludeable ($path)
foreach ($ipath as $include) {
$test = realpath($include . DIRECTORY_SEPARATOR . $path);
* @param string $uitype Name of the frontend type (for example "CLI")
* @return object the frontend object, or a PEAR error
function setFrontendType ($uitype)
$uiclass = 'PEAR_Frontend_' . $uitype;
return PEAR_Command ::setFrontendClass ($uiclass);
// {{{ 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
function registerCommands ($merge = false , $dir = null )
$dir = dirname(__FILE__ ) . '/Command';
return PEAR ::raiseError (" registerCommands: opendir($dir) failed" );
$GLOBALS['_PEAR_Command_commandlist'] = array ();
if ($entry{0 } == '.' || substr($entry, -4 ) != '.php' || $entry == 'Common.php') {
$class = "PEAR_Command_". substr($entry, 0 , -4 );
if (empty ($GLOBALS['_PEAR_Command_objects'][$class])) {
$GLOBALS['_PEAR_Command_objects'][$class] = &new $class($ui, $config);
$implements = $GLOBALS['_PEAR_Command_objects'][$class]->getCommands ();
foreach ($implements as $command => $desc) {
$GLOBALS['_PEAR_Command_commandlist'][$command] = $class;
$GLOBALS['_PEAR_Command_commanddesc'][$command] = $desc;
$shortcuts = $GLOBALS['_PEAR_Command_objects'][$class]->getShortcuts ();
foreach ($shortcuts as $shortcut => $command) {
$GLOBALS['_PEAR_Command_shortcuts'][$shortcut] = $command;
* Get the list of currently supported commands, and what
* classes implement them.
* @return array command => implementing class
if (empty ($GLOBALS['_PEAR_Command_commandlist'])) {
PEAR_Command ::registerCommands ();
return $GLOBALS['_PEAR_Command_commandlist'];
* Get the list of command shortcuts.
* @return array shortcut => command
if (empty ($GLOBALS['_PEAR_Command_shortcuts'])) {
PEAR_Command ::registerCommands ();
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 $long_args (reference) long getopt format
function getGetoptArgs ($command, &$short_args, &$long_args)
if (empty ($GLOBALS['_PEAR_Command_commandlist'])) {
PEAR_Command ::registerCommands ();
if (!isset ($GLOBALS['_PEAR_Command_commandlist'][$command])) {
$class = $GLOBALS['_PEAR_Command_commandlist'][$command];
$obj = &$GLOBALS['_PEAR_Command_objects'][$class];
return $obj->getGetoptArgs ($command, $short_args, $long_args);
* Get description for a command.
* @param string $command Name of the command
* @return string command description
function getDescription ($command)
if (!isset ($GLOBALS['_PEAR_Command_commanddesc'][$command])) {
return $GLOBALS['_PEAR_Command_commanddesc'][$command];
* @param string $command Name of the command to return help for
function getHelp ($command)
$cmds = PEAR_Command ::getCommands ();
if (isset ($cmds[$command])) {
$class = $cmds[$command];
return $GLOBALS['_PEAR_Command_objects'][$class]->getHelp ($command);
Documentation generated on Mon, 11 Mar 2019 14:23:54 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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