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<?php
/**
* HelpCommand class file.
*
* @author Qiang Xue <[email protected]>
* @link http://www.yiiframework.com/
* @copyright Copyright © 2008-2011 Yii Software LLC
* @license http://www.yiiframework.com/license/
* @version $Id: HelpCommand.php 2799 2011-01-01 19:31:13Z qiang.xue $
*/
/**
* HelpCommand displays help information for commands under yiic shell.
*
* @author Qiang Xue <[email protected]>
* @version $Id: HelpCommand.php 2799 2011-01-01 19:31:13Z qiang.xue $
* @package system.cli.commands.shell
* @since 1.0
*/
class HelpCommand extends CConsoleCommand
{
/**
* Execute the action.
* @param array command line parameters specific for this command
*/
public function run($args)
{
$runner=$this->getCommandRunner();
$commands=$runner->commands;
if(isset($args[0]))
$name=strtolower($args[0]);
if(!isset($args[0]) || !isset($commands[$name]))
{
echo <<<EOD
At the prompt, you may enter a PHP statement or one of the following commands:
EOD;
$commandNames=array_keys($commands);
sort($commandNames);
echo ' - '.implode("\n - ",$commandNames);
echo <<<EOD
Type 'help <command-name>' for details about a command.
To expand the above command list, place your command class files
under 'protected/commands/shell', or a directory specified
by the 'YIIC_SHELL_COMMAND_PATH' environment variable. The command class
must extend from CConsoleCommand.
EOD;
}
else
echo $runner->createCommand($name)->getHelp();
}
/**
* Provides the command description.
* @return string the command description.
*/
public function getHelp()
{
return <<<EOD
USAGE
help [command-name]
DESCRIPTION
Display the help information for the specified command.
If the command name is not given, all commands will be listed.
PARAMETERS
* command-name: optional, the name of the command to show help information.
EOD;
}
}