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				| <?php | |
| /** | |
|  * @link http://www.yiiframework.com/ | |
|  * @copyright Copyright (c) 2008 Yii Software LLC | |
|  * @license http://www.yiiframework.com/license/ | |
|  */ | |
|  | |
| namespace yii\helpers\base; | |
|  | |
| // todo test this on all kinds of terminals, especially windows (check out lib ncurses) | |
|  | |
| /** | |
|  * Console View is the base class for console view components | |
|  * | |
|  * A console view provides functionality to create rich console application by allowing to format output | |
|  * by adding color and font style to it. | |
|  * | |
|  * @author Carsten Brandt <mail@cebe.cc> | |
|  * @since 2.0 | |
|  */ | |
| class Console | |
| { | |
| 	const FG_BLACK = 30; | |
| 	const FG_RED = 31; | |
| 	const FG_GREEN = 32; | |
| 	const FG_YELLOW = 33; | |
| 	const FG_BLUE = 34; | |
| 	const FG_PURPLE = 35; | |
| 	const FG_CYAN = 36; | |
| 	const FG_GREY = 37; | |
|  | |
| 	const BG_BLACK = 40; | |
| 	const BG_RED = 41; | |
| 	const BG_GREEN = 42; | |
| 	const BG_YELLOW = 43; | |
| 	const BG_BLUE = 44; | |
| 	const BG_PURPLE = 45; | |
| 	const BG_CYAN = 46; | |
| 	const BG_GREY = 47; | |
|  | |
|     const NORMAL = 0; | |
| 	const BOLD = 1; | |
| 	const ITALIC = 3; | |
| 	const UNDERLINE = 4; | |
| 	const BLINK = 5; | |
| 	const NEGATIVE = 7; | |
| 	const CONCEALED = 8; | |
| 	const CROSSED_OUT = 9; | |
| 	const FRAMED = 51; | |
| 	const ENCIRCLED = 52; | |
| 	const OVERLINED = 53; | |
|  | |
| 	/** | |
| 	 * Moves the terminal cursor up by sending ANSI control code CUU to the terminal. | |
| 	 * If the cursor is already at the edge of the screen, this has no effect. | |
| 	 * @param integer $rows number of rows the cursor should be moved up | |
| 	 */ | |
| 	public static function moveCursorUp($rows=1) | |
| 	{ | |
| 		echo "\033[" . (int) $rows . 'A'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Moves the terminal cursor down by sending ANSI control code CUD to the terminal. | |
| 	 * If the cursor is already at the edge of the screen, this has no effect. | |
| 	 * @param integer $rows number of rows the cursor should be moved down | |
| 	 */ | |
| 	public static function moveCursorDown($rows=1) | |
| 	{ | |
| 		echo "\033[" . (int) $rows . 'B'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Moves the terminal cursor forward by sending ANSI control code CUF to the terminal. | |
| 	 * If the cursor is already at the edge of the screen, this has no effect. | |
| 	 * @param integer $steps number of steps the cursor should be moved forward | |
| 	 */ | |
| 	public static function moveCursorForward($steps=1) | |
| 	{ | |
| 		echo "\033[" . (int) $steps . 'C'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Moves the terminal cursor backward by sending ANSI control code CUB to the terminal. | |
| 	 * If the cursor is already at the edge of the screen, this has no effect. | |
| 	 * @param integer $steps number of steps the cursor should be moved backward | |
| 	 */ | |
| 	public static function moveCursorBackward($steps=1) | |
| 	{ | |
| 		echo "\033[" . (int) $steps . 'D'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Moves the terminal cursor to the beginning of the next line by sending ANSI control code CNL to the terminal. | |
| 	 * @param integer $lines number of lines the cursor should be moved down | |
| 	 */ | |
| 	public static function moveCursorNextLine($lines=1) | |
| 	{ | |
| 		echo "\033[" . (int) $lines . 'E'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Moves the terminal cursor to the beginning of the previous line by sending ANSI control code CPL to the terminal. | |
| 	 * @param integer $lines number of lines the cursor should be moved up | |
| 	 */ | |
| 	public static function moveCursorPrevLine($lines=1) | |
| 	{ | |
| 		echo "\033[" . (int) $lines . 'F'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Moves the cursor to an absolute position given as column and row by sending ANSI control code CUP or CHA to the terminal. | |
| 	 * @param integer $column 1-based column number, 1 is the left edge of the screen. | |
| 	 * @param integer|null $row 1-based row number, 1 is the top edge of the screen. if not set, will move cursor only in current line. | |
| 	 */ | |
| 	public static function moveCursorTo($column, $row=null) | |
| 	{ | |
| 		if ($row === null) { | |
| 			echo "\033[" . (int) $column . 'G'; | |
| 		} else { | |
| 			echo "\033[" . (int) $row . ';' . (int) $column . 'H'; | |
| 		} | |
| 	} | |
|  | |
| 	/** | |
| 	 * Scrolls whole page up by sending ANSI control code SU to the terminal. | |
| 	 * New lines are added at the bottom. This is not supported by ANSI.SYS used in windows. | |
| 	 * @param int $lines number of lines to scroll up | |
| 	 */ | |
| 	public static function scrollUp($lines=1) | |
| 	{ | |
| 		echo "\033[".(int)$lines."S"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Scrolls whole page down by sending ANSI control code SD to the terminal. | |
| 	 * New lines are added at the top. This is not supported by ANSI.SYS used in windows. | |
| 	 * @param int $lines number of lines to scroll down | |
| 	 */ | |
| 	public static function scrollDown($lines=1) | |
| 	{ | |
| 		echo "\033[".(int)$lines."T"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Saves the current cursor position by sending ANSI control code SCP to the terminal. | |
| 	 * Position can then be restored with {@link restoreCursorPosition}. | |
| 	 */ | |
| 	public static function saveCursorPosition() | |
| 	{ | |
| 		echo "\033[s"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Restores the cursor position saved with {@link saveCursorPosition} by sending ANSI control code RCP to the terminal. | |
| 	 */ | |
| 	public static function restoreCursorPosition() | |
| 	{ | |
| 		echo "\033[u"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Hides the cursor by sending ANSI DECTCEM code ?25l to the terminal. | |
| 	 * Use {@link showCursor} to bring it back. | |
| 	 * Do not forget to show cursor when your application exits. Cursor might stay hidden in terminal after exit. | |
| 	 */ | |
| 	public static function hideCursor() | |
| 	{ | |
| 		echo "\033[?25l"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Will show a cursor again when it has been hidden by {@link hideCursor}  by sending ANSI DECTCEM code ?25h to the terminal. | |
| 	 */ | |
| 	public static function showCursor() | |
| 	{ | |
| 		echo "\033[?25h"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Clears entire screen content by sending ANSI control code ED with argument 2 to the terminal. | |
| 	 * Cursor position will not be changed. | |
| 	 * **Note:** ANSI.SYS implementation used in windows will reset cursor position to upper left corner of the screen. | |
| 	 */ | |
| 	public static function clearScreen() | |
| 	{ | |
| 		echo "\033[2J"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Clears text from cursor to the beginning of the screen by sending ANSI control code ED with argument 1 to the terminal. | |
| 	 * Cursor position will not be changed. | |
| 	 */ | |
| 	public static function clearScreenBeforeCursor() | |
| 	{ | |
| 		echo "\033[1J"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Clears text from cursor to the end of the screen by sending ANSI control code ED with argument 0 to the terminal. | |
| 	 * Cursor position will not be changed. | |
| 	 */ | |
| 	public static function clearScreenAfterCursor() | |
| 	{ | |
| 		echo "\033[0J"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Clears the line, the cursor is currently on by sending ANSI control code EL with argument 2 to the terminal. | |
| 	 * Cursor position will not be changed. | |
| 	 */ | |
| 	public static function clearLine() | |
| 	{ | |
| 		echo "\033[2K"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Clears text from cursor position to the beginning of the line by sending ANSI control code EL with argument 1 to the terminal. | |
| 	 * Cursor position will not be changed. | |
| 	 */ | |
| 	public static function clearLineBeforeCursor() | |
| 	{ | |
| 		echo "\033[1K"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Clears text from cursor position to the end of the line by sending ANSI control code EL with argument 0 to the terminal. | |
| 	 * Cursor position will not be changed. | |
| 	 */ | |
| 	public static function clearLineAfterCursor() | |
| 	{ | |
| 		echo "\033[0K"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Will send ANSI format for following output | |
| 	 * | |
| 	 * You can pass any of the FG_*, BG_* and TEXT_* constants and also xterm256ColorBg | |
| 	 * TODO: documentation | |
| 	 */ | |
| 	public static function ansiStyle() | |
| 	{ | |
| 		echo "\033[" . implode(';', func_get_args()) . 'm'; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Will return a string formatted with the given ANSI style | |
| 	 * | |
| 	 * See {@link ansiStyle} for possible arguments. | |
| 	 * @param string $string the string to be formatted | |
| 	 * @return string | |
| 	 */ | |
| 	public static function ansiStyleString($string) | |
| 	{ | |
| 		$args = func_get_args(); | |
| 		array_shift($args); | |
| 		$code = implode(';', $args); | |
| 		return "\033[0m" . ($code !== '' ? "\033[" . $code . "m" : '') . $string."\033[0m"; | |
| 	} | |
|  | |
| 	//const COLOR_XTERM256 = 38;// http://en.wikipedia.org/wiki/Talk:ANSI_escape_code#xterm-256colors | |
| 	public static function xterm256ColorFg($i) // TODO naming! | |
| 	{ | |
| 		return '38;5;'.$i; | |
| 	} | |
|  | |
| 	public static function xterm256ColorBg($i) // TODO naming! | |
| 	{ | |
| 		return '48;5;'.$i; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Usage: list($w, $h) = ConsoleHelper::getScreenSize(); | |
| 	 * | |
| 	 * @return array | |
| 	 */ | |
| 	public static function getScreenSize() | |
| 	{ | |
| 		// TODO implement | |
| 		return array(150,50); | |
| 	} | |
|  | |
| 	/** | |
| 	 * resets any ansi style set by previous method {@link ansiStyle} | |
| 	 * Any output after this is will have default text style. | |
| 	 */ | |
| 	public static function reset() | |
| 	{ | |
| 		echo "\033[0m"; | |
| 	} | |
|  | |
| 	/** | |
| 	 * Strips ANSI control codes from a string | |
| 	 * | |
| 	 * @param string $string String to strip | |
| 	 * @return string | |
| 	 */ | |
| 	public static function strip($string) | |
| 	{ | |
| 		return preg_replace('/\033\[[\d;]+m/', '', $string); // TODO currently only strips color | |
| 	} | |
|  | |
| 	// TODO refactor and review | |
| 	public static function ansiToHtml($string) | |
| 	{ | |
| 		$tags = 0; | |
| 		return preg_replace_callback('/\033\[[\d;]+m/', function($ansi) use (&$tags) { | |
| 			$styleA = array(); | |
| 			foreach(explode(';', $ansi) as $controlCode) | |
| 			{ | |
| 				switch($controlCode) | |
| 				{ | |
| 					case static::FG_BLACK:  $style = array('color' => '#000000'); break; | |
| 					case static::FG_BLUE:   $style = array('color' => '#000078'); break; | |
| 					case static::FG_CYAN:   $style = array('color' => '#007878'); break; | |
| 					case static::FG_GREEN:  $style = array('color' => '#007800'); break; | |
| 					case static::FG_GREY:   $style = array('color' => '#787878'); break; | |
| 					case static::FG_PURPLE: $style = array('color' => '#780078'); break; | |
| 					case static::FG_RED:    $style = array('color' => '#780000'); break; | |
| 					case static::FG_YELLOW: $style = array('color' => '#787800'); break; | |
| 					case static::BG_BLACK:  $style = array('background-color' => '#000000'); break; | |
| 					case static::BG_BLUE:   $style = array('background-color' => '#000078'); break; | |
| 					case static::BG_CYAN:   $style = array('background-color' => '#007878'); break; | |
| 					case static::BG_GREEN:  $style = array('background-color' => '#007800'); break; | |
| 					case static::BG_GREY:   $style = array('background-color' => '#787878'); break; | |
| 					case static::BG_PURPLE: $style = array('background-color' => '#780078'); break; | |
| 					case static::BG_RED:    $style = array('background-color' => '#780000'); break; | |
| 					case static::BG_YELLOW: $style = array('background-color' => '#787800'); break; | |
| 					case static::BOLD:       $style = array('font-weight' => 'bold'); break; | |
| 					case static::ITALIC:     $style = array('font-style' => 'italic'); break; | |
| 					case static::UNDERLINE:  $style = array('text-decoration' => array('underline')); break; | |
| 					case static::OVERLINED:  $style = array('text-decoration' => array('overline')); break; | |
| 					case static::CROSSED_OUT:$style = array('text-decoration' => array('line-through')); break; | |
| 					case static::BLINK:      $style = array('text-decoration' => array('blink')); break; | |
| 					case static::NEGATIVE:   // ??? | |
| 					case static::CONCEALED: | |
| 					case static::ENCIRCLED: | |
| 					case static::FRAMED: | |
| 					// TODO allow resetting codes | |
| 					break; | |
| 					case 0: // ansi reset | |
| 						$return = ''; | |
| 						for($n=$tags; $tags>0; $tags--) { | |
| 							$return .= '</span>'; | |
| 						} | |
| 						return $return; | |
| 				} | |
|  | |
| 				$styleA = ArrayHelper::merge($styleA, $style); | |
| 			} | |
| 			$styleString[] = array(); | |
| 			foreach($styleA as $name => $content) { | |
| 				if ($name === 'text-decoration') { | |
| 					$content = implode(' ', $content); | |
| 				} | |
| 				$styleString[] = $name.':'.$content; | |
| 			} | |
| 			$tags++; | |
| 			return '<span' . (!empty($styleString) ? 'style="' . implode(';', $styleString) : '') . '>'; | |
| 		}, $string); | |
| 	} | |
|  | |
|     /** | |
|      * | |
|      * Returns an ANSI-Controlcode | |
|      * | |
|      * Takes 1 to 3 Arguments: either 1 to 3 strings containing the name of the | |
|      * FG Color, style and BG color, or one array with the indices color, style | |
|      * or background. | |
|      * | |
|      * @param mixed  $color      Optional. | |
|      *                           Either a string with the name of the foreground | |
|      *                           color, or an array with the indices 'color', | |
|      *                           'style', 'background' and corresponding names as | |
|      *                           values. | |
|      * @param string $style      Optional name of the style | |
|      * @param string $background Optional name of the background color | |
|      * | |
|      * @return string | |
|      */ | |
|     public function color($color = null, $style = null, $background = null) // {{{ | |
|     { | |
|         $colors = static::getColorCodes(); | |
|  | |
|         if (is_array($color)) { | |
|             $style      = isset($color['style']) ? $color['style'] : null; | |
|             $background = isset($color['background']) ? $color['background'] : null; | |
|             $color      = isset($color['color']) ? $color['color'] : null; | |
|         } | |
|  | |
|         if ($color == 'reset') { | |
|             return "\033[0m"; | |
|         } | |
|  | |
|         $code = array(); | |
|         if (isset($style)) { | |
|             $code[] = $colors['style'][$style]; | |
|         } | |
|  | |
|         if (isset($color)) { | |
|             $code[] = $colors['color'][$color]; | |
|         } | |
|  | |
|         if (isset($background)) { | |
|             $code[] = $colors['background'][$background]; | |
|         } | |
|  | |
|         if (empty($code)) { | |
|             $code[] = 0; | |
|         } | |
|         $code = implode(';', $code); | |
|         return "\033[{$code}m"; | |
|     } | |
|  | |
|     /** | |
| 	 * TODO syntax copied from https://github.com/pear/Console_Color2/blob/master/Console/Color2.php | |
| 	 * | |
| 	 * Converts colorcodes in the format %y (for yellow) into ansi-control | |
| 	 * codes. The conversion table is: ('bold' meaning 'light' on some | |
| 	 * terminals). It's almost the same conversion table irssi uses. | |
| 	 * <pre> | |
| 	 *                  text      text            background | |
| 	 *      ------------------------------------------------ | |
| 	 *      %k %K %0    black     dark grey       black | |
| 	 *      %r %R %1    red       bold red        red | |
| 	 *      %g %G %2    green     bold green      green | |
| 	 *      %y %Y %3    yellow    bold yellow     yellow | |
| 	 *      %b %B %4    blue      bold blue       blue | |
| 	 *      %m %M %5    magenta   bold magenta    magenta | |
| 	 *      %p %P       magenta (think: purple) | |
| 	 *      %c %C %6    cyan      bold cyan       cyan | |
| 	 *      %w %W %7    white     bold white      white | |
| 	 * | |
| 	 *      %F     Blinking, Flashing | |
| 	 *      %U     Underline | |
| 	 *      %8     Reverse | |
| 	 *      %_,%9  Bold | |
| 	 * | |
| 	 *      %n     Resets the color | |
| 	 *      %%     A single % | |
| 	 * </pre> | |
| 	 * First param is the string to convert, second is an optional flag if | |
| 	 * colors should be used. It defaults to true, if set to false, the | |
| 	 * colorcodes will just be removed (And %% will be transformed into %) | |
| 	 * | |
| 	 * @param string $string  String to convert | |
| 	 * @param bool   $colored Should the string be colored? | |
| 	 * | |
| 	 * @return string | |
| 	 */ | |
| 	public static function renderColoredString($string, $colored = true) | |
|     { | |
| 		static $conversions = array ( // static so the array doesn't get built | |
| 		   // everytime | |
| 		// %y - yellow, and so on... {{{ | |
| 		'%y' => array('color' => 'yellow'), | |
| 		'%g' => array('color' => 'green' ), | |
| 		'%b' => array('color' => 'blue'  ), | |
| 		'%r' => array('color' => 'red'   ), | |
| 		'%p' => array('color' => 'purple'), | |
| 		'%m' => array('color' => 'purple'), | |
| 		'%c' => array('color' => 'cyan'  ), | |
| 		'%w' => array('color' => 'grey'  ), | |
| 		'%k' => array('color' => 'black' ), | |
| 		'%n' => array('color' => 'reset' ), | |
| 		'%Y' => array('color' => 'yellow',  'style' => 'light'), | |
| 		'%G' => array('color' => 'green',   'style' => 'light'), | |
| 		'%B' => array('color' => 'blue',    'style' => 'light'), | |
| 		'%R' => array('color' => 'red',     'style' => 'light'), | |
| 		'%P' => array('color' => 'purple',  'style' => 'light'), | |
| 		'%M' => array('color' => 'purple',  'style' => 'light'), | |
| 		'%C' => array('color' => 'cyan',    'style' => 'light'), | |
| 		'%W' => array('color' => 'grey',    'style' => 'light'), | |
| 		'%K' => array('color' => 'black',   'style' => 'light'), | |
| 		'%N' => array('color' => 'reset',   'style' => 'light'), | |
| 		'%3' => array('background' => 'yellow'), | |
| 		'%2' => array('background' => 'green' ), | |
| 		'%4' => array('background' => 'blue'  ), | |
| 		'%1' => array('background' => 'red'   ), | |
| 		'%5' => array('background' => 'purple'), | |
| 		'%6' => array('background' => 'cyan'  ), | |
| 		'%7' => array('background' => 'grey'  ), | |
| 		'%0' => array('background' => 'black' ), | |
| 		// Don't use this, I can't stand flashing text | |
| 		'%F' => array('style' => 'blink'), | |
| 		'%U' => array('style' => 'underline'), | |
| 		'%8' => array('style' => 'inverse'), | |
| 		'%9' => array('style' => 'bold'), | |
| 		'%_' => array('style' => 'bold') | |
| 		// }}} | |
| 		); | |
|  | |
| 		if ($colored) { | |
| 			$string = str_replace('%%', '% ', $string); | |
| 			foreach ($conversions as $key => $value) { | |
| 				$string = str_replace($key, static::color($value), | |
| 				$string); | |
| 			} | |
| 			$string = str_replace('% ', '%', $string); | |
|  | |
| 		} else { | |
| 			$string = preg_replace('/%((%)|.)/', '$2', $string); | |
| 		} | |
|  | |
| 		return $string; | |
| 	} | |
|  | |
|     /** | |
|      * Returns the different foreground and background color codes and styles available. | |
|      * @return array the color codes | |
|      */ | |
|     public static function getColorCodes() | |
|     { | |
|         return array( | |
|             'color' => array( | |
|                 'black'  => static::FG_BLACK, | |
|                 'red'    => static::FG_RED, | |
|                 'green'  => static::FG_GREEN, | |
|                 'yellow' => static::FG_YELLOW, | |
|                 'blue'   => static::FG_BLUE, | |
|                 'purple' => static::FG_PURPLE, | |
|                 'cyan'   => static::FG_CYAN, | |
|                 'grey'   => static::FG_GREY, | |
|             ), | |
|             'style' => array( | |
|                 'normal'      => static::NORMAL, | |
|                 'bold'        => static::BOLD, | |
|                 'italic'      => static::ITALIC, | |
|                 'underline'   => static::UNDERLINE, | |
|                 'blink'       => static::BLINK, | |
|                 'negative'    => static::NEGATIVE, | |
|                 'concealed'   => static::CONCEALED, | |
|                 'crossed_out' => static::CROSSED_OUT, | |
|                 'framed'      => static::FRAMED, | |
|                 'encircled'   => static::ENCIRCLED, | |
|                 'overlined'   => static::OVERLINED | |
|             ), | |
|             'background' => array( | |
|                 'black'  => static::BG_BLACK, | |
|                 'red'    => static::BG_RED, | |
|                 'green'  => static::BG_RED, | |
|                 'yellow' => static::BG_YELLOW, | |
|                 'blue'   => static::BG_BLUE, | |
|                 'purple' => static::BG_PURPLE, | |
|                 'cyan'   => static::BG_CYAN, | |
|                 'grey'   => static::BG_GREY | |
|             ) | |
|         ); | |
|     } | |
|  | |
| 	/** | |
| 	 * Escapes % so they don't get interpreted as color codes | |
| 	 * | |
| 	 * @param string $string String to escape | |
| 	 * | |
| 	 * @access public | |
| 	 * @return string | |
| 	 */ | |
| 	public static function escape($string) | |
| 	{ | |
| 		return str_replace('%', '%%', $string); | |
| 	} | |
|  | |
|     /** | |
|      * Returns true if the stream supports colorization. ANSI colors is disabled if not supported by the stream. | |
|      * | |
|      * - windows without asicon | |
|      * - not tty consoles | |
|      * | |
|      * @param mixed $stream | |
|      * @return bool true if the stream supports ANSI colors, otherwise false. | |
|      */ | |
|     public static function streamSupportsAnsiColors( $stream ) | |
|     { | |
|         return DIRECTORY_SEPARATOR == '\\' | |
|             ? null !== getenv('ANSICON') | |
|             : function_exists('posix_isatty') && @posix_isatty($stream); | |
|     } | |
|  | |
|     /** | |
|      * Returns true if the console is running on windows | |
|      * @return bool | |
|      */ | |
|     public static function isRunningOnWindows() | |
|     { | |
|         return strtoupper(substr(PHP_OS, 0, 3)) === 'WIN'; | |
|     } | |
|  | |
|     /** | |
|      * Gets input from STDIN and returns a string right-trimmed for EOLs. | |
|      * | |
|      * @param bool $raw If set to true, returns the raw string without trimming | |
|      * | |
|      * @return string | |
|      */ | |
|     public static function stdin($raw = false) | |
|     { | |
|         return $raw ? fgets(STDIN) : rtrim(fgets(STDIN), PHP_EOL); | |
|     } | |
|  | |
|     /** | |
|      * Prints text to STDOUT. | |
|      * | |
|      * @param string $text | |
|      * @param bool   $raw | |
|      * | |
|      * @return int|false Number of bytes printed or false on error | |
|      */ | |
|     public static function stdout($text, $raw = false) | |
|     { | |
|         if ($raw) { | |
|             return fwrite(STDOUT, $text); | |
|         } elseif (static::streamSupportsAnsiColors(STDOUT)) { | |
|             return fwrite(STDOUT, static::renderColoredString($text)); | |
|         } else { | |
|             return fwrite(STDOUT, static::renderColoredString($text, false)); | |
|         } | |
|     } | |
|  | |
|     /** | |
|      * Prints text to STDERR. | |
|      * | |
|      * @param string $text | |
|      * @param bool   $raw | |
|      * | |
|      * @return mixed Number of bytes printed or bool false on error. | |
|      */ | |
|     public static function stderr($text, $raw = false) | |
|     { | |
|         if ($raw) { | |
|             return fwrite(STDERR, $text); | |
|         } elseif (static::streamSupportsAnsiColors(STDERR)) { | |
|             return fwrite(STDERR, static::renderColoredString($text)); | |
|         } else { | |
|             return fwrite(STDERR, static::renderColoredString($text, false)); | |
|         } | |
|     } | |
|  | |
|     /** | |
|      * Prints text to STDERR appended with a carriage return (PHP_EOL). | |
|      * | |
|      * @param string $text | |
|      * @param bool   $raw | |
|      * | |
|      * @return mixed Number of bytes printed or false on error | |
|      */ | |
|     public static function error($text = null, $raw = false) | |
|     { | |
|         return static::stderr($text . PHP_EOL, $raw); | |
|     } | |
|  | |
|     /** | |
|      * Asks the user for input. Ends when the user types a carriage return (PHP_EOL). Optionally, It also provides a | |
|      * prompt. | |
|      * | |
|      * @param string $prompt the prompt (optional) | |
|      * @return string the user's input | |
|      */ | |
|     public static function input($prompt = null) | |
|     { | |
|         if(isset($prompt)) { | |
|             static::stdout($prompt); | |
|         } | |
|         return static::stdin(); | |
|     } | |
|  | |
|     /** | |
|      * Prints text to STDOUT appended with a carriage return (PHP_EOL). | |
|      * | |
|      * @param string $text | |
|      * @param bool $raw | |
|      * | |
|      * @return mixed Number of bytes printed or bool false on error | |
|      */ | |
|     public static function output($text = null, $raw = false) | |
|     { | |
|         return static::stdout($text . PHP_EOL, $raw); | |
|     } | |
|  | |
|     /** | |
|      * Prompts the user for input and validates it | |
|      * | |
|      * @param string $text prompt string | |
|      * @param array $options the options to validate the input: | |
|      *  - required: whether it is required or not | |
|      *  - default: default value if no input is inserted by the user | |
|      *  - pattern: regular expression pattern to validate user input | |
|      *  - validator: a callable function to validate input. The function must accept two parameters: | |
|      *      - $input: the user input to validate | |
|      *      - $error: the error value passed by reference if validation failed. | |
|      * @return string the user input | |
|      */ | |
|     public static function prompt($text, $options = array()) | |
|     { | |
|         $options = ArrayHelper::merge($options, array( | |
|             'required'  => false, | |
|             'default'   => null, | |
|             'pattern'   => null, | |
|             'validator' => null, | |
|             'error'     => 'Invalid input.', | |
|         )); | |
|         $error = null; | |
|  | |
|         top: | |
|         $input = $options['default'] | |
|             ? static::input("$text [" . $options['default'] . ']: ') | |
|             : static::input("$text: "); | |
|  | |
|         if (!strlen($input)) { | |
|             if (isset($options['default'])) { | |
|                 $input = $options['default']; | |
|             } elseif ($options['required']) { | |
|                 static::output($options['error']); | |
|                 goto top; | |
|             } | |
|         } elseif ($options['pattern'] && !preg_match($options['pattern'], $input)) { | |
|             static::output($options['error']); | |
|             goto top; | |
|         } elseif ($options['validator'] && | |
|             !call_user_func_array($options['validator'], array($input, &$error))) { | |
|             static::output(isset($error) ? $error : $options['error']); | |
|             goto top; | |
|         } | |
|  | |
|         return $input; | |
|     } | |
|  | |
|     /** | |
|      * Asks the user for a simple yes/no confirmation. | |
|      * | |
|      * @param string $prompt the prompt string | |
|      * | |
|      * @return bool true or false according to user input. | |
|      */ | |
|     public static function confirm($prompt) | |
|     { | |
|         top: | |
|         $input = strtolower(static::input("$prompt [y/n]: ")); | |
|         if (!in_array(substr($input,0,1), array('y', 'n'))) { | |
|             static::output("Please, type 'y' or 'n'"); | |
|             goto top; | |
|         } | |
|         return $input === 'y' ? true : false; | |
|     } | |
|  | |
|     /** | |
|      * Gives the user an option to choose from. Giving '?' as an input will show | |
|      * a list of options to choose from and their explanations. | |
|      * | |
|      * @param string $prompt the prompt message | |
|      * @param array  $options Key-value array of options to choose from | |
|      * | |
|      * @return string An option character the user chose | |
|      */ | |
|     public static function select($prompt, $options = array()) | |
|     { | |
|         top: | |
|         static::stdout("$prompt [" . implode(',', array_keys($options)) . ",?]: "); | |
|         $input = static::stdin(); | |
|         if ($input === '?') { | |
|             foreach ($options as $key => $value) { | |
|                 echo " $key - $value\n"; | |
|             } | |
|             echo " ? - Show help\n"; | |
|             goto top; | |
|         } elseif (!in_array($input, array_keys($options))) goto top; | |
|         return $input; | |
|     } | |
|  | |
|     /** | |
|      * Displays and updates a simple progress bar on screen. | |
|      * | |
|      * @param $done the number of items that are completed | |
|      * @param $total the total value of items that are to be done | |
|      * @param int $size the size of the status bar (optional) | |
|      * @see http://snipplr.com/view/29548/ | |
|      */ | |
|     public static function showProgress($done, $total, $size=30) | |
|     { | |
|         static $start; | |
|  | |
|         // if we go over our bound, just ignore it | |
|         if($done > $total) { | |
|             return; | |
|         } | |
|  | |
|         if(empty($start)) { | |
|             $start=time(); | |
|         } | |
|  | |
|         $now = time(); | |
|  | |
|         $percent=(double)($done/$total); | |
|         $bar=floor($percent*$size); | |
|  | |
|         $status="\r["; | |
|         $status.=str_repeat("=", $bar); | |
|         if($bar<$size){ | |
|             $status.=">"; | |
|             $status.=str_repeat(" ", $size-$bar); | |
|         } else { | |
|             $status.="="; | |
|         } | |
|  | |
|         $display=number_format($percent*100, 0); | |
|  | |
|         $status.="] $display%  $done/$total"; | |
|  | |
|         $rate = ($now-$start)/$done; | |
|         $left = $total - $done; | |
|         $eta = round($rate * $left, 2); | |
|  | |
|         $elapsed = $now - $start; | |
|  | |
|         $status.= " remaining: ".number_format($eta)." sec.  elapsed: ".number_format($elapsed)." sec."; | |
|  | |
|         static::stdout("$status  "); | |
|  | |
|         flush(); | |
|  | |
|         // when done, send a newline | |
|         if($done == $total) { | |
|             echo "\n"; | |
|         } | |
|     } | |
| }
 | |
| 
 |