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<?php |
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/* |
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* To change this license header, choose License Headers in Project Properties. |
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* To change this template file, choose Tools | Templates |
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* and open the template in the editor. |
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*/ |
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namespace Maslosoft\Zamm; |
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use Exception; |
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use Maslosoft\Zamm\Helpers\Tabs; |
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use Maslosoft\Zamm\Helpers\Wrapper; |
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/** |
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* Capture part of php code for later use. |
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* This is intended for parts of code which should be evaluated, |
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* for instance for HTML widgets. |
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* |
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* Just after evluation or later, executing code can be captured and |
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* displayed on HTML page. |
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* |
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* Example: |
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* ```php |
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* Capture::open(); |
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* echo 'Hi World!'; |
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* Capture::close(); |
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* ``` |
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* Above coge is executed, moreover php code is now available in `Capture` class, |
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* and can be salvaged by `get`: |
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* ```php |
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* echo Capute::get(); //echo 'Hi World!'; |
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* ``` |
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* @author Piotr Maselkowski <pmaselkowski at gmail.com> |
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*/ |
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class Capture |
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{ |
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/** |
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* Array of snippets |
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* @var string[] |
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*/ |
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private static $snippets = []; |
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/** |
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* Id counter for auto id's |
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* @var int |
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*/ |
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private static $idCounter = 0; |
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/** |
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* Whenever capture is opened |
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* @var bool |
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*/ |
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private static $isOpen = false; |
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/** |
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* Currently capturing id |
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* @var int|string |
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*/ |
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private static $currentId = 0; |
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/** |
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* Currently captured file |
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* @var string |
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*/ |
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private static $currentFile = ''; |
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/** |
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* Currentlty captured starting line |
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* @var int |
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*/ |
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private static $currentLine = 0; |
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/** |
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* Open PHP capturing block |
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* |
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* @param int|string $id |
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*/ |
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public static function open($id = null) |
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{ |
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if (self::$isOpen) |
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{ |
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throw new Exception('Capture is already open, close block before capturing another snippet'); |
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} |
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if (null === $id) |
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{ |
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$id = self::$idCounter++; |
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} |
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self::$isOpen = true; |
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$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1)[0]; |
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self::$currentId = $id; |
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self::$currentFile = $trace['file']; |
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self::$currentLine = $trace['line']; |
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} |
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/** |
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* Close php capturing block |
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*/ |
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public static function close() |
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{ |
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if (!self::$isOpen) |
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{ |
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throw new Exception('Capture is not open, open closing capturing block'); |
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} |
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self::$isOpen = false; |
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$lines = file(self::$currentFile); |
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$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1)[0]; |
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$fragment = array_slice($lines, self::$currentLine, $trace['line'] - self::$currentLine - 1); |
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Tabs::trim($fragment); |
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return self::$snippets[self::$currentId] = implode('', $fragment); |
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} |
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/** |
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* Get last snipped or choosen by id. |
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* @param int|string $id |
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* @return Wrapper |
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*/ |
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public static function get($id = null) |
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{ |
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if (self::$isOpen) |
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{ |
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throw new Exception('Capture is open, close block before getting snippet'); |
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} |
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if (null === $id) |
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{ |
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$id = self::$currentId; |
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} |
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return new Wrapper(self::$snippets[$id]); |
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} |
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/** |
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* Get captured PHP block, additionally wrapped by markdown |
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* fenced PHP code mark. This can be directly outputted to md file. |
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* @param int|string $id |
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*/ |
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public static function getMd($id = null) |
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{ |
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return sprintf("```php\n%s\n```", self::get($id)); |
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} |
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/** |
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* Get captured PHP block, additionally wrapped by html pre and code tags. |
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* This can be directly outputted to HTML file. |
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* @param int|string $id |
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*/ |
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public static function getHtml($id = null) |
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{ |
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return sprintf('<pre><code>%s</code></pre>', self::get($id)); |
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} |
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} |
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Maslosoft /
Zamm
