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<?php
/**
* ConsoleOutput file.
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since CakePHP(tm) v 2.0
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* Object wrapper for outputting information from a shell application.
* Can be connected to any stream resource that can be used with fopen()
*
* Can generate colorized output on consoles that support it. There are a few
* built in styles
*
* - `error` Error messages.
* - `warning` Warning messages.
* - `info` Informational messages.
* - `comment` Additional text.
* - `question` Magenta text used for user prompts
*
* By defining styles with addStyle() you can create custom console styles.
*
* ### Using styles in output
*
* You can format console output using tags with the name of the style to apply. From inside a shell object
*
* `$this->out('<warning>Overwrite:</warning> foo.php was overwritten.');`
*
* This would create orange 'Overwrite:' text, while the rest of the text would remain the normal color.
* See ConsoleOutput::styles() to learn more about defining your own styles. Nested styles are not supported
* at this time.
*
* @package Cake.Console
*/
class ConsoleOutput {
/**
* Raw output constant - no modification of output text.
*/
const RAW = 0;
/**
* Plain output - tags will be stripped.
*/
const PLAIN = 1;
/**
* Color output - Convert known tags in to ANSI color escape codes.
*/
const COLOR = 2;
/**
* Constant for a newline.
*/
const LF = PHP_EOL;
/**
* File handle for output.
*
* @var resource
*/
protected $_output;
/**
* The current output type. Manipulated with ConsoleOutput::outputAs();
*
* @var integer.
*/
protected $_outputAs = self::COLOR;
/**
* text colors used in colored output.
*
* @var array
*/
protected static $_foregroundColors = array(
'black' => 30,
'red' => 31,
'green' => 32,
'yellow' => 33,
'blue' => 34,
'magenta' => 35,
'cyan' => 36,
'white' => 37
);
/**
* background colors used in colored output.
*
* @var array
*/
protected static $_backgroundColors = array(
'black' => 40,
'red' => 41,
'green' => 42,
'yellow' => 43,
'blue' => 44,
'magenta' => 45,
'cyan' => 46,
'white' => 47
);
/**
* formatting options for colored output
*
* @var string
*/
protected static $_options = array(
'bold' => 1,
'underline' => 4,
'blink' => 5,
'reverse' => 7,
);
/**
* Styles that are available as tags in console output.
* You can modify these styles with ConsoleOutput::styles()
*
* @var array
*/
protected static $_styles = array(
'error' => array('text' => 'red', 'underline' => true),
'warning' => array('text' => 'yellow'),
'info' => array('text' => 'cyan'),
'success' => array('text' => 'green'),
'comment' => array('text' => 'blue'),
'question' => array('text' => "magenta"),
);
/**
* Construct the output object.
*
* Checks for a pretty console environment. Ansicon allows pretty consoles
* on windows, and is supported.
*
* @param string $stream The identifier of the stream to write output to.
*/
public function __construct($stream = 'php://stdout') {
$this->_output = fopen($stream, 'w');
if (DS == '\\' && !(bool)env('ANSICON')) {
$this->_outputAs = self::PLAIN;
}
}
/**
* Outputs a single or multiple messages to stdout. If no parameters
* are passed, outputs just a newline.
*
* @param mixed $message A string or a an array of strings to output
* @param integer $newlines Number of newlines to append
* @return integer Returns the number of bytes returned from writing to stdout.
*/
public function write($message, $newlines = 1) {
if (is_array($message)) {
$message = implode(self::LF, $message);
}
return $this->_write($this->styleText($message . str_repeat(self::LF, $newlines)));
}
/**
* Apply styling to text.
*
* @param string $text Text with styling tags.
* @return string String with color codes added.
*/
public function styleText($text) {
if ($this->_outputAs == self::RAW) {
return $text;
}
if ($this->_outputAs == self::PLAIN) {
$tags = implode('|', array_keys(self::$_styles));
return preg_replace('#</?(?:' . $tags . ')>#', '', $text);
}
return preg_replace_callback(
'/<(?<tag>[a-z0-9-_]+)>(?<text>.*?)<\/(\1)>/ims', array($this, '_replaceTags'), $text
);
}
/**
* Replace tags with color codes.
*
* @param array $matches.
* @return string
*/
protected function _replaceTags($matches) {
$style = $this->styles($matches['tag']);
if (empty($style)) {
return '<' . $matches['tag'] . '>' . $matches['text'] . '</' . $matches['tag'] . '>';
}
$styleInfo = array();
if (!empty($style['text']) && isset(self::$_foregroundColors[$style['text']])) {
$styleInfo[] = self::$_foregroundColors[$style['text']];
}
if (!empty($style['background']) && isset(self::$_backgroundColors[$style['background']])) {
$styleInfo[] = self::$_backgroundColors[$style['background']];
}
unset($style['text'], $style['background']);
foreach ($style as $option => $value) {
if ($value) {
$styleInfo[] = self::$_options[$option];
}
}
return "\033[" . implode($styleInfo, ';') . 'm' . $matches['text'] . "\033[0m";
}
/**
* Writes a message to the output stream.
*
* @param string $message Message to write.
* @return boolean success
*/
protected function _write($message) {
return fwrite($this->_output, $message);
}
/**
* Get the current styles offered, or append new ones in.
*
* ### Get a style definition
*
* `$this->output->styles('error');`
*
* ### Get all the style definitions
*
* `$this->output->styles();`
*
* ### Create or modify an existing style
*
* `$this->output->styles('annoy', array('text' => 'purple', 'background' => 'yellow', 'blink' => true));`
*
* ### Remove a style
*
* `$this->output->styles('annoy', false);`
*
* @param string $style The style to get or create.
* @param mixed $definition The array definition of the style to change or create a style
* or false to remove a style.
* @return mixed If you are getting styles, the style or null will be returned. If you are creating/modifying
* styles true will be returned.
*/
public function styles($style = null, $definition = null) {
if ($style === null && $definition === null) {
return self::$_styles;
}
if (is_string($style) && $definition === null) {
return isset(self::$_styles[$style]) ? self::$_styles[$style] : null;
}
if ($definition === false) {
unset(self::$_styles[$style]);
return true;
}
self::$_styles[$style] = $definition;
return true;
}
/**
* Get/Set the output type to use. The output type how formatting tags are treated.
*
* @param integer $type The output type to use. Should be one of the class constants.
* @return mixed Either null or the value if getting.
*/
public function outputAs($type = null) {
if ($type === null) {
return $this->_outputAs;
}
$this->_outputAs = $type;
}
/**
* clean up and close handles
*
*/
public function __destruct() {
fclose($this->_output);
}
}
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