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Gareth Ellis
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Dec 1, 2015
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<?php | ||
/** | ||
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org) | ||
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org) | ||
* | ||
* Licensed under The MIT License | ||
* For full copyright and license information, please see the LICENSE.txt | ||
* Redistributions of files must retain the above copyright notice. | ||
* | ||
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org) | ||
* @link http://cakephp.org CakePHP(tm) Project | ||
* @since 2.8 | ||
* @license http://www.opensource.org/licenses/mit-license.php MIT License | ||
*/ | ||
App::uses("ShellHelper", "Console/Helper"); | ||
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||
/** | ||
* Create a progress bar using a supplied callback. | ||
*/ | ||
class ProgressShellHelper extends ShellHelper | ||
{ | ||
/** | ||
* The current progress. | ||
* | ||
* @var int | ||
*/ | ||
protected $_progress = 0; | ||
class ProgressShellHelper extends ShellHelper { | ||
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||
/** | ||
* The total number of 'items' to progress through. | ||
* | ||
* @var int | ||
*/ | ||
protected $_total = 0; | ||
/** | ||
* The current progress. | ||
* | ||
* @var int | ||
*/ | ||
protected $_progress = 0; | ||
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||
/** | ||
* The width of the bar. | ||
* | ||
* @var int | ||
*/ | ||
protected $_width = 0; | ||
/** | ||
* The total number of 'items' to progress through. | ||
* | ||
* @var int | ||
*/ | ||
protected $_total = 0; | ||
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||
/** | ||
* Output a progress bar. | ||
* | ||
* Takes a number of options to customize the behavior: | ||
* | ||
* - `total` The total number of items in the progress bar. Defaults | ||
* to 100. | ||
* - `width` The width of the progress bar. Defaults to 80. | ||
* - `callback` The callback that will be called in a loop to advance the progress bar. | ||
* | ||
* @param array $args The arguments/options to use when outputing the progress bar. | ||
* @return void | ||
*/ | ||
public function output($args) | ||
{ | ||
$args += ['callback' => null]; | ||
if (isset($args[0])) { | ||
$args['callback'] = $args[0]; | ||
} | ||
if (!$args['callback'] || !is_callable($args['callback'])) { | ||
throw new RuntimeException('Callback option must be a callable.'); | ||
} | ||
$this->init($args); | ||
$callback = $args['callback']; | ||
while ($this->_progress < $this->_total) { | ||
$callback($this); | ||
$this->draw(); | ||
} | ||
$this->_consoleOutput->write(''); | ||
} | ||
/** | ||
* The width of the bar. | ||
* | ||
* @var int | ||
*/ | ||
protected $_width = 0; | ||
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||
/** | ||
* Initialize the progress bar for use. | ||
* | ||
* - `total` The total number of items in the progress bar. Defaults | ||
* to 100. | ||
* - `width` The width of the progress bar. Defaults to 80. | ||
* | ||
* @param array $args The initialization data. | ||
* @return void | ||
*/ | ||
public function init(array $args = []) | ||
{ | ||
$args += ['total' => 100, 'width' => 80]; | ||
$this->_progress = 0; | ||
$this->_width = $args['width']; | ||
$this->_total = $args['total']; | ||
} | ||
/** | ||
* Output a progress bar. | ||
* | ||
* Takes a number of options to customize the behavior: | ||
* | ||
* - `total` The total number of items in the progress bar. Defaults | ||
* to 100. | ||
* - `width` The width of the progress bar. Defaults to 80. | ||
* - `callback` The callback that will be called in a loop to advance the progress bar. | ||
* | ||
* @param array $args The arguments/options to use when outputing the progress bar. | ||
* @return void | ||
* @throws RuntimeException | ||
*/ | ||
public function output($args) { | ||
$args += ['callback' => null]; | ||
if (isset($args[0])) { | ||
$args['callback'] = $args[0]; | ||
} | ||
if (!$args['callback'] || !is_callable($args['callback'])) { | ||
throw new RuntimeException('Callback option must be a callable.'); | ||
} | ||
$this->init($args); | ||
$callback = $args['callback']; | ||
while ($this->_progress < $this->_total) { | ||
$callback($this); | ||
$this->draw(); | ||
} | ||
$this->_consoleOutput->write(''); | ||
} | ||
|
||
/** | ||
* Initialize the progress bar for use. | ||
* | ||
* - `total` The total number of items in the progress bar. Defaults | ||
* to 100. | ||
* - `width` The width of the progress bar. Defaults to 80. | ||
* | ||
* @param array $args The initialization data. | ||
* @return void | ||
*/ | ||
public function init(array $args = []) { | ||
$args += ['total' => 100, 'width' => 80]; | ||
$this->_progress = 0; | ||
$this->_width = $args['width']; | ||
$this->_total = $args['total']; | ||
} | ||
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||
/** | ||
* Increment the progress bar. | ||
* | ||
* @param int $num The amount of progress to advance by. | ||
* @return void | ||
*/ | ||
public function increment($num = 1) | ||
{ | ||
$this->_progress = min(max(0, $this->_progress + $num), $this->_total); | ||
} | ||
/** | ||
* Increment the progress bar. | ||
* | ||
* @param int $num The amount of progress to advance by. | ||
* @return void | ||
*/ | ||
public function increment($num = 1) { | ||
$this->_progress = min(max(0, $this->_progress + $num), $this->_total); | ||
} | ||
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/** | ||
* Render the progress bar based on the current state. | ||
* | ||
* @return void | ||
*/ | ||
public function draw() | ||
{ | ||
$numberLen = strlen(' 100%'); | ||
$complete = round($this->_progress / $this->_total, 2); | ||
$barLen = ($this->_width - $numberLen) * ($this->_progress / $this->_total); | ||
$bar = ''; | ||
if ($barLen > 1) { | ||
$bar = str_repeat('=', $barLen - 1) . '>'; | ||
} | ||
$pad = ceil($this->_width - $numberLen - $barLen); | ||
if ($pad > 0) { | ||
$bar .= str_repeat(' ', $pad); | ||
} | ||
$percent = ($complete * 100) . '%'; | ||
$bar .= str_pad($percent, $numberLen, ' ', STR_PAD_LEFT); | ||
$this->_consoleOutput->overwrite($bar, 0); | ||
} | ||
/** | ||
* Render the progress bar based on the current state. | ||
* | ||
* @return void | ||
*/ | ||
public function draw() { | ||
$numberLen = strlen(' 100%'); | ||
$complete = round($this->_progress / $this->_total, 2); | ||
$barLen = ($this->_width - $numberLen) * ($this->_progress / $this->_total); | ||
$bar = ''; | ||
if ($barLen > 1) { | ||
$bar = str_repeat('=', $barLen - 1) . '>'; | ||
} | ||
$pad = ceil($this->_width - $numberLen - $barLen); | ||
if ($pad > 0) { | ||
$bar .= str_repeat(' ', $pad); | ||
} | ||
$percent = ($complete * 100) . '%'; | ||
$bar .= str_pad($percent, $numberLen, ' ', STR_PAD_LEFT); | ||
$this->_consoleOutput->overwrite($bar, 0); | ||
} | ||
} |
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