571 lines
16 KiB
PHP
571 lines
16 KiB
PHP
<?php
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/**
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* Define constants for PHP 4 / PHP 5 compatability
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*
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* The source of this file can be found at:
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* http://cvs.php.net/co.php/pear/PHP_Compat/Compat/Constant/T.php?r=HEAD
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*
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* It is part of the PEAR PHP_Compat package:
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* http://pear.php.net/package/PHP_Compat
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*/
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//require_once 'PHP/Compat/Constant/T.php';
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/**
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* Improved PHP syntax highlighting.
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*
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* Generates valid XHTML output with function referencing
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* and line numbering.
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*
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* Four output methods provide maximum flexibility.
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* * toHTML => Formatted HTML
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* * toHtmlComment => Formatted HTML, specifically for comments on messageboards
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* * toList => Ordered lists
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* * toArray => Associative array
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*
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* Highlighting can be inline (with styles), or the same as
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* highlight_file() where colors are taken from php.ini.
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*
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* @author Aidan Lister <aidan@php.net>
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* @author Based on an idea by Matthew Harris <shugotenshi@gmail.com>
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* @version 1.3.0
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* @link http://aidanlister.com/repos/v/PHP_Highlight.php
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*/
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if (!defined('T_ML_COMMENT')) {
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define('T_ML_COMMENT', T_COMMENT);
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} else {
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define('T_DOC_COMMENT', T_ML_COMMENT);
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}
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class PHP_Highlight
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{
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/**
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* Hold highlight colors
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*
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* Contains an associative array of token types and colours.
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* By default, it contains the colours as specified by php.ini
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*
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* For example, to change the colour of strings, use something
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* simular to $h->highlight['string'] = 'blue';
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*
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* @var array
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* @access public
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*/
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var $highlight;
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/**
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* Things to be replaced for formatting or otherwise reasons
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*
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* The first element contains the match array, the second the replace
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* array.
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*
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* @var array
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* @access public
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*/
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var $replace = array(
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0 => array("\t", ' '),
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1 => array(' ', ' '));
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/**
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* Format of the link to the PHP manual page
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*
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* @var string
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* @access public
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*/
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var $manual = '<a href="http://www.php.net/function.%s">%s</a>';
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/**
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* Format of the span tag to be wrapped around each token
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*
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* @var string
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* @access public
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*/
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var $span;
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/**
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* Hold the source
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*
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* @var string
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* @access private
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*/
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var $_source = false;
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/**
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* Hold plaintext keys
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*
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* An array of lines which are plaintext
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*
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* @var array
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* @access private
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*/
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var $_plaintextkeys = array();
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/**
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* Constructor
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*
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* Populates highlight array
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*
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* @param bool $inline If inline styles rather than colors are to be used
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* @param bool $plaintext Do not format code outside PHP tags
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*/
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function PHP_Highlight($inline = false)
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{
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// Inline
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if ($inline === false) {
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// Default colours from php.ini
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/**
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$this->highlight = array(
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'string' => ini_get('highlight.string'),
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'comment' => ini_get('highlight.comment'),
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'keyword' => ini_get('highlight.keyword'),
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'bg' => ini_get('highlight.bg'),
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'default' => ini_get('highlight.default'),
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'html' => ini_get('highlight.html')
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);
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*/
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$this->highlight = array(
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'string' => "#cb0864",
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'comment' => "#888888",
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'keyword' => "#118994",
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'bg' => "#222222",
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'default' => "#000000",
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'html' => ini_get('highlight.html')
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);
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$this->span = '<span style="color: %s;">%s</span>';
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} else {
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// Basic styles
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$this->highlight = array(
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'string' => 'string',
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'comment' => 'comment',
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'keyword' => 'keyword',
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'bg' => 'bg',
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'default' => 'default',
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'html' => 'html'
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);
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$this->span = '<span class="%s">%s</span>';
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}
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}
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/**
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* Load a file
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*
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* @access public
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* @param string $file The file to load
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* @return bool Returns TRUE
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*/
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function loadFile($file)
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{
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$this->_source = file_get_contents($file);
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return true;
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}
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/**
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* Load a string
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*
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* @access public
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* @param string $string The string to load
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* @return bool Returns TRUE
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*/
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function loadString($string)
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{
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$this->_source = $string;
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return true;
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}
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/**
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* Parse the loaded string into an array
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* Source is returned with the element key corresponding to the line number
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*
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* @access public
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* @param bool $funcref Reference functions to the PHP manual
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* @param bool $blocks Whether to ignore processing plaintext
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* @return array An array of highlighted source code
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*/
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function toArray($funcref = true, $blocks = false)
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{
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// Ensure source has been loaded
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if ($this->_source == false) {
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return false;
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}
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// Init
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$tokens = token_get_all($this->_source);
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$manual = $this->manual;
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$span = $this->span;
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$i = 0;
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$out = array();
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$out[$i] = '';
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// Loop through each token
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foreach ($tokens as $j => $token) {
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// Single char
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if (is_string($token)) {
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// Skip token2color check for speed
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$out[$i] .= sprintf($span, $this->highlight['keyword'], htmlspecialchars($token));
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// Heredocs behave strangely
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list($tb) = isset($tokens[$j - 1]) ? $tokens[$j - 1] : false;
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if ($tb === T_END_HEREDOC) {
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$out[++$i] = '';
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}
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continue;
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}
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// Proper token
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list ($token, $value) = $token;
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// Make the value safe
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$value = htmlspecialchars($value);
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$value = str_replace($this->replace[0], $this->replace[1], $value);
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// Process
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if ($value === "\n") {
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// End this line and start the next
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$out[++$i] = '';
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} else {
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// Function linking
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if ($funcref === true && $token === T_STRING) {
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// Look ahead 1, look ahead 2, and look behind 3
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if ((isset($tokens[$j + 1]) && $tokens[$j + 1] === '(' ||
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isset($tokens[$j + 2]) && $tokens[$j + 2] === '(') &&
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isset($tokens[$j - 3][0]) && $tokens[$j - 3][0] !== T_FUNCTION
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&& function_exists($value)) {
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// Insert the manual link
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$value = sprintf($manual, $value, $value);
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}
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}
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// Explode token block
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$lines = explode("\n", $value);
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foreach ($lines as $jj => $line) {
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$line = trim($line);
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if ($line !== '') {
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// This next line is helpful for debugging
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//$out[$i] .= token_name($token);
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// Check for plaintext
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if ($blocks === true && $token === T_INLINE_HTML) {
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$this->_plaintextkeys[] = $i;
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$out[$i] .= $line;
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} else {
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$out[$i] .= sprintf($span, $this->_token2color($token), $line);
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}
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}
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// Start a new line
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if (isset($lines[$jj + 1])) {
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$out[++$i] = '';
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}
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}
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}
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}
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return $out;
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}
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/**
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* Convert the source to an ordered list.
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* Each line is wrapped in <li> tags.
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*
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* @access public
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* @param bool $return Return rather than print the results
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* @param bool $funcref Reference functions to the PHP manual
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* @param bool $blocks Whether to use code blocks around plaintext
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* @return string A HTML ordered list
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*/
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function toList($return = false, $funcref = true, $blocks = true)
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{
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// Ensure source has been loaded
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if ($this->_source == false) {
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return false;
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}
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// Format list
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$source = $this->toArray($funcref, $blocks);
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$out = "<ol>\n";
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foreach ($source as $i => $line) {
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$out .= " <li>";
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// Some extra juggling for lines which are not code
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if (empty($line)) {
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$out .= ' ';
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} elseif ($blocks === true && in_array($i, $this->_plaintextkeys)) {
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$out .= $line;
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} else {
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$out .= "<code>$line</code>";
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}
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$out .= "</li>\n";
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}
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$out .= "</ol>\n";
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if ($return === true) {
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return $out;
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} else {
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echo $out;
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}
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}
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/**
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* Convert the source to formatted HTML.
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* Each line ends with <br />.
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*
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* @access public
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* @param bool $return Return rather than print the results
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* @param bool $linenum Display line numbers
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* @param string $format Specify format of line numbers displayed
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* @param bool $funcref Reference functions to the PHP manual
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* @return string A HTML block of code
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*/
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function toHtml($return = false, $linenum = false, $format = null, $funcref = true)
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{
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// Ensure source has been loaded
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if ($this->_source == false) {
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return false;
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}
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// Line numbering
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if ($linenum === true && $format === null) {
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$format = '<span>%02d</span> ';
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}
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// Format code
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$source = $this->toArray($funcref);
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$out = "<code>\n";
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foreach ($source as $i => $line) {
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$out .= ' ';
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if ($linenum === true) {
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$out .= sprintf($format, $i);
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}
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$out .= empty($line) ? ' ' : $line;
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$out .= "<br />\n";
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}
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$out .= "</code>\n";
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if ($return === true) {
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return $out;
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} else {
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echo $out;
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}
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}
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/**
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* Convert the source to formatted HTML blocks.
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* Each line ends with <br />.
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*
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* This method ensures only PHP is between <code> blocks.
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*
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* @access public
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* @param bool $return Return rather than print the results
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* @param bool $linenum Display line numbers
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* @param string $format Specify format of line numbers displayed
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* @param bool $reset Reset the line numbering each block
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* @param bool $funcref Reference functions to the PHP manual
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* @return string A HTML block of code
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*/
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function toHtmlBlocks($return = false, $linenum = false, $format = null, $reset = true, $funcref = true)
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{
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// Ensure source has been loaded
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if ($this->_source == false) {
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return false;
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}
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// Default line numbering
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if ($linenum === true && $format === null) {
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$format = '<span>%03d</span> ';
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}
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// Init
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$source = $this->toArray($funcref, true);
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$out = '';
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$wasplain = true;
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$k = 0;
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// Loop through each line and decide which block to use
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foreach ($source as $i => $line) {
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// Empty line
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if (empty($line)) {
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if ($wasplain === true) {
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$out .= ' ';
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} else {
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if (in_array($i+1, $this->_plaintextkeys)) {
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$out .= "</code>\n";
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// Reset line numbers
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if ($reset === true) {
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$k = 0;
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}
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} else {
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$out .= ' ';
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// Add line number
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if ($linenum === true) {
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$out .= sprintf($format, ++$k);
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}
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}
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}
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// Plain text
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} elseif (in_array($i, $this->_plaintextkeys)) {
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if ($wasplain === false) {
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$out .= "</code>\n";
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// Reset line numbers
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if ($reset === true) {
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$k = 0;
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}
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}
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$wasplain = true;
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$out .= str_replace(' ', ' ', $line);
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// Code
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} else {
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if ($wasplain === true) {
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$out .= "<code>\n";
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}
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$wasplain = false;
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$out .= ' ';
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// Add line number
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if ($linenum === true) {
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$out .= sprintf($format, ++$k);
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}
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$out .= $line;
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}
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$out .= "<br />\n";
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}
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// Add final code tag
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if ($wasplain === false) {
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$out .= "</code>\n";
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}
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// Output method
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if ($return === true) {
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return $out;
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} else {
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echo $out;
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}
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}
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/**
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* Assign a color based on the name of a token
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*
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* @access private
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* @param int $token The token
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* @return string The color of the token
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*/
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function _token2color($token)
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{
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switch ($token):
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case T_CONSTANT_ENCAPSED_STRING:
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return $this->highlight['string'];
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break;
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case T_INLINE_HTML:
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return $this->highlight['html'];
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break;
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case T_COMMENT:
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case T_DOC_COMMENT:
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//case T_ML_COMMENT:
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return $this->highlight['comment'];
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break;
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case T_ABSTRACT:
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case T_ARRAY:
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case T_ARRAY_CAST:
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case T_AS:
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case T_BOOLEAN_AND:
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case T_BOOLEAN_OR:
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case T_BOOL_CAST:
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case T_BREAK:
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case T_CASE:
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case T_CATCH:
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case T_CLASS:
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case T_CLONE:
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case T_CONCAT_EQUAL:
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case T_CONTINUE:
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case T_DEFAULT:
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case T_DOUBLE_ARROW:
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case T_DOUBLE_CAST:
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case T_ECHO:
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case T_ELSE:
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case T_ELSEIF:
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case T_EMPTY:
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case T_ENDDECLARE:
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case T_ENDFOR:
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case T_ENDFOREACH:
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case T_ENDIF:
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case T_ENDSWITCH:
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case T_ENDWHILE:
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case T_END_HEREDOC:
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case T_EXIT:
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case T_EXTENDS:
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case T_FINAL:
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case T_FOREACH:
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case T_FUNCTION:
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case T_GLOBAL:
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case T_IF:
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case T_INC:
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case T_INCLUDE:
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case T_INCLUDE_ONCE:
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case T_INSTANCEOF:
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case T_INT_CAST:
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case T_ISSET:
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case T_IS_EQUAL:
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case T_IS_IDENTICAL:
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case T_IS_NOT_IDENTICAL:
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case T_IS_SMALLER_OR_EQUAL:
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case T_NEW:
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case T_OBJECT_CAST:
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case T_OBJECT_OPERATOR:
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case T_PAAMAYIM_NEKUDOTAYIM:
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case T_PRIVATE:
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case T_PROTECTED:
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case T_PUBLIC:
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case T_REQUIRE:
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case T_REQUIRE_ONCE:
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case T_RETURN:
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case T_SL:
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case T_SL_EQUAL:
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case T_SR:
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case T_SR_EQUAL:
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case T_START_HEREDOC:
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case T_STATIC:
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case T_STRING_CAST:
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case T_THROW:
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case T_TRY:
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case T_UNSET_CAST:
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case T_VAR:
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case T_WHILE:
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return $this->highlight['keyword'];
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break;
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case T_CLOSE_TAG:
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case T_OPEN_TAG:
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case T_OPEN_TAG_WITH_ECHO:
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default:
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return $this->highlight['default'];
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endswitch;
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}
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}
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?>
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