mirror of https://github.com/friendica/friendica
466 lines
13 KiB
PHP
466 lines
13 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* HTML renderer
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to version 3.0 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_0.txt. If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category Text
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* @package Text_Highlighter
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* @author Andrey Demenev <demenev@gmail.com>
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* @copyright 2004-2006 Andrey Demenev
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* @license http://www.php.net/license/3_0.txt PHP License
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* @version CVS: $Id$
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* @link http://pear.php.net/package/Text_Highlighter
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*/
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/**
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* @ignore
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*/
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require_once 'Text/Highlighter/Renderer.php';
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require_once 'Text/Highlighter/Renderer/Array.php';
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// BC trick : only define constants if Text/Highlighter.php
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// is not yet included
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if (!defined('HL_NUMBERS_LI')) {
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/**#@+
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* Constant for use with $options['numbers']
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*/
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/**
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* use numbered list, deprecated, use HL_NUMBERS_OL instaed
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* @deprecated
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*/
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define ('HL_NUMBERS_LI' , 1);
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/**
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* Use 2-column table with line numbers in left column and code in right column.
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*/
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define ('HL_NUMBERS_TABLE' , 2);
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/**#@-*/
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}
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/**#@+
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* Constant for use with $options['numbers']
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*/
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/**
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* Use numbered list
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*/
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define ('HL_NUMBERS_OL', 1);
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/**
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* Use non-numbered list
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*/
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define ('HL_NUMBERS_UL', 3);
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/**#@-*/
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/**
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* HTML renderer
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*
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* Elements of $options argument of constructor (each being optional):
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*
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* - 'numbers' - Line numbering style 0 or {@link HL_NUMBERS_TABLE}
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* or {@link HL_NUMBERS_UL} or {@link HL_NUMBERS_OL}
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* - 'numbers_start' - starting number for numbered lines
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* - 'tabsize' - Tab size
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* - 'style_map' - Mapping of keywords to formatting rules using inline styles
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* - 'class_map' - Mapping of keywords to formatting rules using class names
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* - 'doclinks' - array that has keys "url", "target" and "elements", used for
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* generating links to online documentation
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* - 'use_language' - class names will be prefixed with language, like "php-reserved" or "css-code"
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*
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* Example of setting documentation links:
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* $options['doclinks'] = array(
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* 'url' => 'http://php.net/%s',
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* 'target' => '_blank',
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* 'elements' => array('reserved', 'identifier')
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* );
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*
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* Example of setting class names map:
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* $options['class_map'] = array(
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* 'main' => 'my-main',
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* 'table' => 'my-table',
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* 'gutter' => 'my-gutter',
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* 'brackets' => 'my-brackets',
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* 'builtin' => 'my-builtin',
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* 'code' => 'my-code',
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* 'comment' => 'my-comment',
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* 'default' => 'my-default',
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* 'identifier' => 'my-identifier',
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* 'inlinedoc' => 'my-inlinedoc',
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* 'inlinetags' => 'my-inlinetags',
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* 'mlcomment' => 'my-mlcomment',
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* 'number' => 'my-number',
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* 'quotes' => 'my-quotes',
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* 'reserved' => 'my-reserved',
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* 'special' => 'my-special',
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* 'string' => 'my-string',
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* 'url' => 'my-url',
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* 'var' => 'my-var',
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* );
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*
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* Example of setting styles mapping:
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* $options['style_map'] = array(
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* 'main' => 'color: black',
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* 'table' => 'border: 1px solid black',
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* 'gutter' => 'background-color: yellow',
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* 'brackets' => 'color: blue',
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* 'builtin' => 'color: red',
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* 'code' => 'color: green',
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* 'comment' => 'color: orange',
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* // ....
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* );
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*
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*
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* @author Andrey Demenev <demenev@gmail.com>
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* @category Text
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* @package Text_Highlighter
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* @copyright 2004-2006 Andrey Demenev
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* @license http://www.php.net/license/3_0.txt PHP License
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Text_Highlighter
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*/
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class Text_Highlighter_Renderer_Html extends Text_Highlighter_Renderer_Array
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{
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/**#@+
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* @access private
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*/
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/**
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* Line numbering style
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*
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* @var integer
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*/
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var $_numbers = 0;
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/**
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* For numberered lines - where to start
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*
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* @var integer
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*/
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var $_numbers_start = 0;
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/**
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* Tab size
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*
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* @var integer
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*/
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var $_tabsize = 4;
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/**
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* Highlighted code
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*
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* @var string
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*/
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var $_output = '';
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/**
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* Mapping of keywords to formatting rules using inline styles
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*
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* @var array
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*/
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var $_style_map = array();
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/**
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* Mapping of keywords to formatting rules using class names
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*
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* @var array
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*/
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var $_class_map = array(
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'main' => 'hl-main',
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'table' => 'hl-table',
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'gutter' => 'hl-gutter',
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'brackets' => 'hl-brackets',
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'builtin' => 'hl-builtin',
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'code' => 'hl-code',
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'comment' => 'hl-comment',
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'default' => 'hl-default',
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'identifier' => 'hl-identifier',
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'inlinedoc' => 'hl-inlinedoc',
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'inlinetags' => 'hl-inlinetags',
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'mlcomment' => 'hl-mlcomment',
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'number' => 'hl-number',
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'prepro' => 'hl-prepro',
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'quotes' => 'hl-quotes',
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'reserved' => 'hl-reserved',
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'special' => 'hl-special',
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'string' => 'hl-string',
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'types' => 'hl-types',
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'url' => 'hl-url',
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'var' => 'hl-var',
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);
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/**
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* Setup for links to online documentation
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*
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* This is an array with keys:
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* - url, ex. http://php.net/%s
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* - target, ex. _blank, default - no target
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* - elements, default is <code>array('reserved', 'identifier')</code>
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*
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* @var array
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*/
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var $_doclinks = array();
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/**#@-*/
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/**
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* Resets renderer state
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*
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* @access protected
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*
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*
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* Descendents of Text_Highlighter call this method from the constructor,
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* passing $options they get as parameter.
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*/
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function reset()
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{
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$this->_output = '';
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if (isset($this->_options['numbers'])) {
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$this->_numbers = (int)$this->_options['numbers'];
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if ($this->_numbers != HL_NUMBERS_LI
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&& $this->_numbers != HL_NUMBERS_UL
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&& $this->_numbers != HL_NUMBERS_OL
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&& $this->_numbers != HL_NUMBERS_TABLE
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) {
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$this->_numbers = 0;
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}
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}
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if (isset($this->_options['tabsize'])) {
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$this->_tabsize = $this->_options['tabsize'];
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}
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if (isset($this->_options['numbers_start'])) {
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$this->_numbers_start = intval($this->_options['numbers_start']);
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}
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if (isset($this->_options['doclinks']) &&
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is_array($this->_options['doclinks']) &&
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!empty($this->_options['doclinks']['url'])
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) {
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$this->_doclinks = $this->_options['doclinks']; // keys: url, target, elements array
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if (empty($this->_options['doclinks']['elements'])) {
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$this->_doclinks['elements'] = array('reserved', 'identifier');
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}
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}
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if (isset($this->_options['style_map'])) {
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$this->_style_map = $this->_options['style_map'];
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}
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if (isset($this->_options['class_map'])) {
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$this->_class_map = array_merge($this->_class_map, $this->_options['class_map']);
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}
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$this->_htmlspecialchars = true;
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}
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/**
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* Given a CSS class name, returns the class name
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* with language name prepended, if necessary
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*
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* @access private
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*
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* @param string $class Token class
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*/
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function _getFullClassName($class)
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{
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if (!empty($this->_options['use_language'])) {
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$the_class = $this->_language . '-' . $class;
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} else {
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$the_class = $class;
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}
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return $the_class;
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}
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/**
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* Signals that no more tokens are available
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*
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* @access public
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*/
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function finalize()
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{
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// get parent's output
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parent::finalize();
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$output = parent::getOutput();
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$html_output = '';
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$numbers_li = false;
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if (
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$this->_numbers == HL_NUMBERS_LI ||
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$this->_numbers == HL_NUMBERS_UL ||
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$this->_numbers == HL_NUMBERS_OL
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)
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{
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$numbers_li = true;
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}
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// loop through each class=>content pair
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foreach ($output AS $token) {
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if ($this->_enumerated) {
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$key = false;
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$the_class = $token[0];
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$content = $token[1];
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} else {
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$key = key($token);
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$the_class = $key;
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$content = $token[$key];
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}
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$span = $this->_getStyling($the_class);
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$decorated_output = $this->_decorate($content, $key);
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if ($numbers_li == true) {
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// end span tags before end of li, and re-open on next line
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$lastSpanTag = str_replace("%s</span>", "", $span);
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$span = sprintf($span, $decorated_output);
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$span = str_replace("\n", "</span></li>\n<li>$lastSpanTag ", $span);
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$html_output .= $span;
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} else {
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$html_output .= sprintf($span, $decorated_output);
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}
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}
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// format lists
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if (!empty($this->_numbers) && $numbers_li == true) {
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// additional whitespace for browsers that do not display
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// empty list items correctly
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$this->_output = '<li> ' . $html_output . '</li>';
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$start = '';
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if ($this->_numbers == HL_NUMBERS_OL && intval($this->_numbers_start) > 0) {
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$start = ' start="' . $this->_numbers_start . '"';
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}
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$list_tag = 'ol';
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if ($this->_numbers == HL_NUMBERS_UL) {
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$list_tag = 'ul';
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}
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$this->_output = '<' . $list_tag . $start
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. ' ' . $this->_getStyling('main', false) . '>'
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. $this->_output . '</'. $list_tag .'>';
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// render a table
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} else if ($this->_numbers == HL_NUMBERS_TABLE) {
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$start_number = 0;
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if (intval($this->_numbers_start)) {
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$start_number = $this->_numbers_start - 1;
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}
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$numbers = '';
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$nlines = substr_count($html_output,"\n")+1;
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for ($i=1; $i <= $nlines; $i++) {
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$numbers .= ($start_number + $i) . "\n";
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}
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$this->_output = '<table ' . $this->_getStyling('table', false) . ' width="100%"><tr>' .
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'<td '. $this->_getStyling('gutter', false) .' align="right" valign="top">' .
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'<pre>' . $numbers . '</pre></td><td '. $this->_getStyling('main', false) .
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' valign="top"><pre>' .
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$html_output . '</pre></td></tr></table>';
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}
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if (!$this->_numbers) {
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$this->_output = '<pre>' . $html_output . '</pre>';
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}
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$this->_output = '<div ' . $this->_getStyling('main', false) . '>' . $this->_output . '</div>';
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}
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/**
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* Provides additional formatting to a keyword
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*
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* @param string $content Keyword
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* @return string Keyword with additional formatting
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* @access public
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*
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*/
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function _decorate($content, $key = false)
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{
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// links to online documentation
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if (!empty($this->_doclinks) &&
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!empty($this->_doclinks['url']) &&
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in_array($key, $this->_doclinks['elements'])
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) {
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$link = '<a href="'. sprintf($this->_doclinks['url'], $content) . '"';
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if (!empty($this->_doclinks['target'])) {
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$link.= ' target="' . $this->_doclinks['target'] . '"';
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}
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$link .= '>';
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$link.= $content;
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$link.= '</a>';
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$content = $link;
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}
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return $content;
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}
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/**
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* Returns <code>class</code> and/or <code>style</code> attribute,
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* optionally enclosed in a <code>span</code> tag
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*
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* @param string $class Class name
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* @paran boolean $span_tag Whether or not to return styling attributes in a <code>>span<</code> tag
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* @return string <code>span</code> tag or just a <code>class</code> and/or <code>style</code> attributes
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* @access private
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*/
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function _getStyling($class, $span_tag = true)
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{
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$attrib = '';
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if (!empty($this->_style_map) &&
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!empty($this->_style_map[$class])
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) {
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$attrib = 'style="'. $this->_style_map[$class] .'"';
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}
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if (!empty($this->_class_map) &&
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!empty($this->_class_map[$class])
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) {
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if ($attrib) {
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$attrib .= ' ';
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}
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$attrib .= 'class="'. $this->_getFullClassName($this->_class_map[$class]) .'"';
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}
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if ($span_tag) {
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$span = '<span ' . $attrib . '>%s</span>';
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return $span;
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} else {
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return $attrib;
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}
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}
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* c-hanging-comment-ender-p: nil
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* End:
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*/
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?>
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