Current File : /www/varak.net/paste.varak.net-5.6/app/lib/Highlighter.php
<?php namespace StickyNotes;
/**
* Sticky Notes
*
* An open source lightweight pastebin application
*
* @package StickyNotes
* @author Sayak Banerjee
* @copyright (c) 2014 Sayak Banerjee <mail@sayakbanerjee.com>
* @license http://www.opensource.org/licenses/bsd-license.php
* @link http://sayakbanerjee.com/sticky-notes
* @since Version 1.0
* @filesource
*/
use GeSHi;
/**
* Highlighter class
*
* Abstraction over the GeSHi syntax highlighting library
*
* @package StickyNotes
* @subpackage Libraries
* @author Sayak Banerjee
*/
class Highlighter {
/**
* Stores a class instance
*
* @var Highlighter
*/
private static $instance;
/**
* GeSHi library instance
*
* @access public
* @var GeSHi
*/
public $geshi;
/**
* Creates a new GeSHi instance
*
* @return void
*/
public function __construct()
{
require_once base_path().'/vendor/geshi/geshi.php';
$this->geshi = new GeSHi();
// Display fancy (bold) line numbers
$this->geshi->enable_line_numbers(GESHI_FANCY_LINE_NUMBERS);
// Use <div> wrapper for the code block
$this->geshi->set_header_type(GESHI_HEADER_DIV);
// Set the tab width for the highlighter
$this->geshi->set_tab_width(4);
// Set custom code styles
$this->geshi->set_code_style('vertical-align: middle', TRUE);
}
/**
* Creates a new instance of Highlighter class
*
* @static
* @return Highlighter
*/
public static function make()
{
if ( ! isset(static::$instance))
{
static::$instance = new Highlighter();
}
return static::$instance;
}
/**
* Fetches a list of languages supported by GeSHi
*
* @access public
* @param bool $csv
* @return array|string
*/
public function languages($csv = FALSE)
{
return Cache::rememberForever("site.languages.{$csv}", function() use ($csv)
{
// get_supported_languages takes a param that tells whether or not
// to return full names. We don't need full names if we just want CSV
$langs = $this->geshi->get_supported_languages( ! $csv);
// Now, sort the languages for non-CSV scenario
if ( ! $csv)
{
// First, we do a natural case-insensitive sort
natcasesort($langs);
// Now, get the language list from the cookie and push the most
// used languages to the beginning of the list to allow easy access
$historyLangs = Cookie::get('languages');
if ( ! is_null($historyLangs))
{
foreach ($historyLangs as $lang)
{
if (isset($langs[$lang]))
{
// Get the language description
$langText = $langs[$lang];
// Remove the language from the array
unset($langs[$lang]);
// Add the language to the top of the array
$langs = array_merge(array($lang => $langText), $langs);
}
}
}
}
else
{
$langs = implode(',', $langs);
}
return $langs;
});
}
/**
* Parses and outputs highlighted code
*
* @param string $key
* @param string $code
* @param string $language
* @return string
*/
public function parse($key, $code, $language)
{
$geshi = $this->geshi;
$parsed = Cache::remember("site.code.{$key}", 45000, function() use ($geshi, $code, $language)
{
$geshi->set_source($code);
$geshi->set_language($language);
return @$geshi->parse_code($code);
});
return $parsed ?: $code;
}
}
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