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