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shell.php
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shell.php
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<?php
/* SVN FILE: $Id$ */
/**
* Base class for Shells
*
* Long description for file
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://www.cakephp.org)
* Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.console.libs
* @since CakePHP(tm) v 1.2.0.5012
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Base class for command-line utilities for automating programmer chores.
*
* @package cake
* @subpackage cake.cake.console.libs
*/
class Shell extends Object {
/**
* An instance of the ShellDispatcher object that loaded this script
*
* @var ShellDispatcher
* @access public
*/
var $Dispatch = null;
/**
* If true, the script will ask for permission to perform actions.
*
* @var boolean
* @access public
*/
var $interactive = true;
/**
* Holds the DATABASE_CONFIG object for the app. Null if database.php could not be found,
* or the app does not exist.
*
* @var DATABASE_CONFIG
* @access public
*/
var $DbConfig = null;
/**
* Contains command switches parsed from the command line.
*
* @var array
* @access public
*/
var $params = array();
/**
* Contains arguments parsed from the command line.
*
* @var array
* @access public
*/
var $args = array();
/**
* The file name of the shell that was invoked.
*
* @var string
* @access public
*/
var $shell = null;
/**
* The class name of the shell that was invoked.
*
* @var string
* @access public
*/
var $className = null;
/**
* The command called if public methods are available.
*
* @var string
* @access public
*/
var $command = null;
/**
* The name of the shell in camelized.
*
* @var string
* @access public
*/
var $name = null;
/**
* An alias for the shell
*
* @var string
* @access public
*/
var $alias = null;
/**
* Contains tasks to load and instantiate
*
* @var array
* @access public
*/
var $tasks = array();
/**
* Contains the loaded tasks
*
* @var array
* @access public
*/
var $taskNames = array();
/**
* Contains models to load and instantiate
*
* @var array
* @access public
*/
var $uses = array();
/**
* Constructs this Shell instance.
*
*/
function __construct(&$dispatch) {
$vars = array('params', 'args', 'shell', 'shellCommand' => 'command');
foreach ($vars as $key => $var) {
if (is_string($key)) {
$this->{$var} =& $dispatch->{$key};
} else {
$this->{$var} =& $dispatch->{$var};
}
}
if ($this->name == null) {
$this->name = get_class($this);
}
if ($this->alias == null) {
$this->alias = $this->name;
}
ClassRegistry::addObject($this->name, $this);
ClassRegistry::map($this->name, $this->alias);
if (!PHP5 && isset($this->args[0])) {
if (strpos($this->name, low(Inflector::camelize($this->args[0]))) !== false) {
$dispatch->shiftArgs();
}
if (low($this->command) == low(Inflector::variable($this->args[0])) && method_exists($this, $this->command)) {
$dispatch->shiftArgs();
}
}
$this->Dispatch =& $dispatch;
}
/**
* Initializes the Shell
* acts as constructor for subclasses
* allows configuration of tasks prior to shell execution
*
* @access public
*/
function initialize() {
$this->_loadModels();
}
/**
* Starts up the the Shell
* allows for checking and configuring prior to command or main execution
* can be overriden in subclasses
*
* @access public
*/
function startup() {
$this->_welcome();
}
/**
* Displays a header for the shell
*
* @access protected
*/
function _welcome() {
$this->out("\nWelcome to CakePHP v" . Configure::version() . " Console");
$this->out("---------------------------------------------------------------");
$this->out('App : '. $this->params['app']);
$this->out('Path: '. $this->params['working']);
$this->hr();
}
/**
* Loads database file and constructs DATABASE_CONFIG class
* makes $this->DbConfig available to subclasses
*
* @return bool
* @access protected
*/
function _loadDbConfig() {
if (config('database') && class_exists('DATABASE_CONFIG')) {
$this->DbConfig =& new DATABASE_CONFIG();
return true;
}
$this->err('Database config could not be loaded');
$this->out('Run \'bake\' to create the database configuration');
return false;
}
/**
* if var $uses = true
* Loads AppModel file and constructs AppModel class
* makes $this->AppModel available to subclasses
* if var $uses is an array of models will load those models
*
* @return bool
* @access protected
*/
function _loadModels() {
if ($this->uses === null || $this->uses === false) {
return;
}
if ($this->uses === true && App::import('Model', 'AppModel')) {
$this->AppModel =& new AppModel(false, false, false);
return true;
}
if ($this->uses !== true && !empty($this->uses)) {
$uses = is_array($this->uses) ? $this->uses : array($this->uses);
$modelClassName = $uses[0];
if (strpos($uses[0], '.') !== false) {
list($plugin, $modelClassName) = explode('.', $uses[0]);
}
$this->modelClass = $modelClassName;
foreach ($uses as $modelClass) {
$plugin = null;
if (strpos($modelClass, '.') !== false) {
list($plugin, $modelClass) = explode('.', $modelClass);
$plugin = $plugin . '.';
}
if (PHP5) {
$this->{$modelClass} = ClassRegistry::init($plugin . $modelClass);
} else {
$this->{$modelClass} =& ClassRegistry::init($plugin . $modelClass);
}
}
return true;
}
return false;
}
/**
* Loads tasks defined in var $tasks
*
* @return bool
* @access public
*/
function loadTasks() {
if ($this->tasks === null || $this->tasks === false || $this->tasks === true || empty($this->tasks)) {
return true;
}
$tasks = $this->tasks;
if (!is_array($tasks)) {
$tasks = array($tasks);
}
foreach ($tasks as $taskName) {
$task = Inflector::underscore($taskName);
$taskClass = Inflector::camelize($taskName . 'Task');
if (!class_exists($taskClass)) {
foreach ($this->Dispatch->shellPaths as $path) {
$taskPath = $path . 'tasks' . DS . $task.'.php';
if (file_exists($taskPath)) {
require_once $taskPath;
break;
}
}
}
if (ClassRegistry::isKeySet($taskClass)) {
$this->taskNames[] = $taskName;
if (!PHP5) {
$this->{$taskName} =& ClassRegistry::getObject($taskClass);
} else {
$this->{$taskName} = ClassRegistry::getObject($taskClass);
}
} else {
$this->taskNames[] = $taskName;
if (!PHP5) {
$this->{$taskName} =& new $taskClass($this->Dispatch);
} else {
$this->{$taskName} = new $taskClass($this->Dispatch);
}
}
if (!isset($this->{$taskName})) {
$this->err("Task '".$taskName."' could not be loaded");
$this->_stop();
}
}
return true;
}
/**
* Prompts the user for input, and returns it.
*
* @param string $prompt Prompt text.
* @param mixed $options Array or string of options.
* @param string $default Default input value.
* @return Either the default value, or the user-provided input.
* @access public
*/
function in($prompt, $options = null, $default = null) {
if (!$this->interactive) {
return $default;
}
$in = $this->Dispatch->getInput($prompt, $options, $default);
if ($options && is_string($options)) {
if (strpos($options, ',')) {
$options = explode(',', $options);
} elseif (strpos($options, '/')) {
$options = explode('/', $options);
} else {
$options = array($options);
}
}
if (is_array($options)) {
while ($in == '' || ($in && (!in_array(low($in), $options) && !in_array(up($in), $options)) && !in_array($in, $options))) {
$in = $this->Dispatch->getInput($prompt, $options, $default);
}
}
if ($in) {
return $in;
}
}
/**
* Outputs a single or multiple messages to stdout.
*
* @param mixed $message A string or a an array of strings to output
* @param mixed $after Appended to message, if true a newline is used
* @access public
*/
function out($message, $after = true) {
if (is_array($message)) {
$message = implode($this->nl(), $message);
}
$this->Dispatch->stdout($message . $this->nl($after), false);
}
/**
* Outputs a single or multiple error messages to stderr.
*
* @param mixed $message A string or a an array of strings to output
* @param mixed $after Appended to message, if true a newline is used
* @access public
*/
function err($message, $after = true) {
if (is_array($message)) {
$message = implode($this->nl(), $message);
}
$this->Dispatch->stderr($message . $this->nl($after));
}
/**
* Returns a single or multiple linefeeds sequences.
*
* @param mixed $format If true returns a linefeed sequence, if false null,
* if a string is given that is returned,
* if an integer is given it is used as a multiplier to return multiple linefeed sequences
* @access public
* @return string
*/
function nl($format = true) {
if (is_string($format)) {
return $format;
}
if (is_integer($format)) {
return str_repeat("\n", $format);
}
return $format ? "\n" : null;
}
/**
* Outputs a series of minus characters to the standard output, acts as a visual separator.
*
* @param mixed $surround If true, the outputs gets surrounded by newlines.
* @access public
*/
function hr($surround = false) {
$this->out(null, $surround);
$this->out('---------------------------------------------------------------');
$this->out(null, $surround);
}
/**
* Displays a formatted error message
* and exits the application with status code 1
*
* @param string $title Title of the error
* @param string $message An optional error message
* @access public
*/
function error($title, $message = null) {
$this->err(sprintf(__('Error: %s', true), $title));
if (!empty($message)) {
$this->err($message);
}
$this->_stop(1);
}
/**
* Will check the number args matches otherwise throw an error
*
* @param integer $expectedNum Expected number of paramters
* @param string $command Command
* @access protected
*/
function _checkArgs($expectedNum, $command = null) {
if (!$command) {
$command = $this->command;
}
if (count($this->args) < $expectedNum) {
$this->error("Wrong number of parameters: ".count($this->args), "Expected: {$expectedNum}\nPlease type 'cake {$this->shell} help' for help on usage of the {$this->name} {$command}");
}
}
/**
* Creates a file at given path
*
* @param string $path Where to put the file.
* @param string $contents Content to put in the file.
* @return boolean Success
* @access public
*/
function createFile ($path, $contents) {
$path = str_replace(DS . DS, DS, $path);
$this->out("\n" . sprintf(__("Creating file %s", true), $path));
if (is_file($path) && $this->interactive === true) {
$key = $this->in(__("File exists, overwrite?", true). " {$path}", array('y', 'n', 'q'), 'n');
if (low($key) == 'q') {
$this->out(__("Quitting.", true) ."\n");
exit;
} elseif (low($key) != 'y') {
$this->out(__("Skip", true) ." {$path}\n");
return false;
}
}
if (!class_exists('File')) {
uses('file');
}
if ($File = new File($path, true)) {
$data = $File->prepare($contents);
$File->write($data);
$this->out(__("Wrote", true) ." {$path}");
return true;
} else {
$this->err(__("Error! Could not write to", true)." {$path}.\n");
return false;
}
}
/**
* Outputs usage text on the standard output. Implement it in subclasses.
*
* @access public
*/
function help() {
if ($this->command != null) {
$this->err("Unknown {$this->name} command '$this->command'.\nFor usage, try 'cake {$this->shell} help'.\n\n");
} else {
$this->Dispatch->help();
}
}
/**
* Action to create a Unit Test
*
* @return boolean Success
* @access protected
*/
function _checkUnitTest() {
if (App::import('vendor', 'simpletest' . DS . 'simpletest')) {
return true;
}
$unitTest = $this->in('SimpleTest is not installed. Do you want to bake unit test files anyway?', array('y','n'), 'y');
$result = low($unitTest) == 'y' || low($unitTest) == 'yes';
if ($result) {
$this->out("\nYou can download SimpleTest from http://simpletest.org", true);
}
return $result;
}
/**
* Makes absolute file path easier to read
*
* @param string $file Absolute file path
* @return sting short path
* @access public
*/
function shortPath($file) {
$shortPath = str_replace(ROOT, null, $file);
$shortPath = str_replace('..'.DS, '', $shortPath);
return r(DS.DS, DS, $shortPath);
}
/**
* Checks for Configure::read('Routing.admin') and forces user to input it if not enabled
*
* @return string Admin route to use
* @access public
*/
function getAdmin() {
$admin = '';
$cakeAdmin = null;
$adminRoute = Configure::read('Routing.admin');
if (!empty($adminRoute)) {
$cakeAdmin = $adminRoute . '_';
} else {
$this->out('You need to enable Configure::write(\'Routing.admin\',\'admin\') in /app/config/core.php to use admin routing.');
$this->out('What would you like the admin route to be?');
$this->out('Example: www.example.com/admin/controller');
while ($admin == '') {
$admin = $this->in("What would you like the admin route to be?", null, 'admin');
}
if ($this->Project->cakeAdmin($admin) !== true) {
$this->out('Unable to write to /app/config/core.php.');
$this->out('You need to enable Configure::write(\'Routing.admin\',\'admin\') in /app/config/core.php to use admin routing.');
$this->_stop();
} else {
$cakeAdmin = $admin . '_';
}
}
return $cakeAdmin;
}
/**
* Creates the proper controller path for the specified controller class name
*
* @param string $name Controller class name
* @return string Path to controller
* @access protected
*/
function _controllerPath($name) {
return low(Inflector::underscore($name));
}
/**
* Creates the proper controller plural name for the specified controller class name
*
* @param string $name Controller class name
* @return string Controller plural name
* @access protected
*/
function _controllerName($name) {
return Inflector::pluralize(Inflector::camelize($name));
}
/**
* Creates the proper controller camelized name (singularized) for the specified name
*
* @param string $name Name
* @return string Camelized and singularized controller name
* @access protected
*/
function _modelName($name) {
return Inflector::camelize(Inflector::singularize($name));
}
/**
* Creates the proper singular model key for associations
*
* @param string $name Controller class name
* @return string Singular model key
* @access protected
*/
function _modelKey($name) {
return Inflector::underscore(Inflector::singularize($name)).'_id';
}
/**
* Creates the proper model name from a foreign key
*
* @param string $key Foreign key
* @return string Model name
* @access protected
*/
function _modelNameFromKey($key) {
$name = str_replace('_id', '',$key);
return Inflector::camelize($name);
}
/**
* creates the singular name for use in views.
*
* @param string $name
* @return string $name
* @access protected
*/
function _singularName($name) {
return Inflector::variable(Inflector::singularize($name));
}
/**
* Creates the plural name for views
*
* @param string $name Name to use
* @return string Plural name for views
* @access protected
*/
function _pluralName($name) {
return Inflector::variable(Inflector::pluralize($name));
}
/**
* Creates the singular human name used in views
*
* @param string $name Controller name
* @return string Singular human name
* @access protected
*/
function _singularHumanName($name) {
return Inflector::humanize(Inflector::underscore(Inflector::singularize($name)));
}
/**
* Creates the plural human name used in views
*
* @param string $name Controller name
* @return string Plural human name
* @access protected
*/
function _pluralHumanName($name) {
return Inflector::humanize(Inflector::underscore(Inflector::pluralize($name)));
}
}
?>