1 files changed, 173 insertions, 0 deletions
diff --git a/plugins/wp-syntax/wp-syntax.php b/plugins/wp-syntax/wp-syntax.php
new file mode 100644
index 00000000..dc98528c
--- /dev/null
+++ b/plugins/wp-syntax/wp-syntax.php
@@ -0,0 +1,173 @@
+<?php
+/*
+Plugin Name: WP-Syntax
+Plugin URI: http://wordpress.org/extend/plugins/wp-syntax/
+Description: Syntax highlighting using <a href="http://qbnz.com/highlighter/">GeSHi</a> supporting a wide range of popular languages.  Wrap code blocks with <code>&lt;pre lang="LANGUAGE" line="1"&gt;</code> and <code>&lt;/pre&gt;</code> where <code>LANGUAGE</code> is a geshi supported language syntax.  The <code>line</code> attribute is optional.
+Author: Ryan McGeary
+Version: 0.9.8
+Author URI: http://ryan.mcgeary.org/
+*/
+
+#
+#  Copyright (c) 2007-2009 Ryan McGeary
+#
+#  This file is part of WP-Syntax.
+#
+#  WP-Syntax is free software; you can redistribute it and/or modify it under
+#  the terms of the GNU General Public License as published by the Free
+#  Software Foundation; either version 2 of the License, or (at your option)
+#  any later version.
+#
+#  WP-Syntax is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along
+#  with WP-Syntax; if not, write to the Free Software Foundation, Inc., 59
+#  Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+
+// Override allowed attributes for pre tags in order to use <pre lang=""> in
+// comments. For more info see wp-includes/kses.php
+if (!CUSTOM_TAGS) {
+  $allowedposttags['pre'] = array(
+    'lang' => array(),
+    'line' => array(),
+    'escaped' => array(),
+    'style' => array(),
+    'width' => array(),
+  );
+  //Allow plugin use in comments
+  $allowedtags['pre'] = array(
+    'lang' => array(),
+    'line' => array(),
+    'escaped' => array(),
+  );
+}
+
+include_once("geshi/geshi.php");
+
+if (!defined("WP_CONTENT_URL")) define("WP_CONTENT_URL", get_option("siteurl") . "/wp-content");
+if (!defined("WP_PLUGIN_URL"))  define("WP_PLUGIN_URL",  WP_CONTENT_URL        . "/plugins");
+
+function wp_syntax_head()
+{
+  $css_url = WP_PLUGIN_URL . "/wp-syntax/wp-syntax.css";
+  if (file_exists(TEMPLATEPATH . "/wp-syntax.css"))
+  {
+    $css_url = get_bloginfo("template_url") . "/wp-syntax.css";
+  }
+  echo "\n".'<link rel="stylesheet" href="' . $css_url . '" type="text/css" media="screen" />'."\n";
+}
+
+function wp_syntax_code_trim($code)
+{
+    // special ltrim b/c leading whitespace matters on 1st line of content
+    $code = preg_replace("/^\s*\n/siU", "", $code);
+    $code = rtrim($code);
+    return $code;
+}
+
+function wp_syntax_substitute(&$match)
+{
+    global $wp_syntax_token, $wp_syntax_matches;
+
+    $i = count($wp_syntax_matches);
+    $wp_syntax_matches[$i] = $match;
+
+    return "\n\n<p>" . $wp_syntax_token . sprintf("%03d", $i) . "</p>\n\n";
+}
+
+function wp_syntax_line_numbers($code, $start)
+{
+    $line_count = count(explode("\n", $code));
+    $output = "<pre>";
+    for ($i = 0; $i < $line_count; $i++)
+    {
+        $output .= ($start + $i) . "\n";
+    }
+    $output .= "</pre>";
+    return $output;
+}
+
+function wp_syntax_highlight($match)
+{
+    global $wp_syntax_matches;
+
+    $i = intval($match[1]);
+    $match = $wp_syntax_matches[$i];
+
+    $language = strtolower(trim($match[1]));
+    $line = trim($match[2]);
+    $escaped = trim($match[3]);
+    $code = wp_syntax_code_trim($match[4]);
+    if ($escaped == "true") $code = htmlspecialchars_decode($code);
+
+    $geshi = new GeSHi($code, $language);
+    $geshi->enable_keyword_links(false);
+    do_action_ref_array('wp_syntax_init_geshi', array(&$geshi));
+
+    $output = "\n<div class=\"wp_syntax\">";
+
+    if ($line)
+    {
+        $output .= "<table><tr><td class=\"line_numbers\">";
+        $output .= wp_syntax_line_numbers($code, $line);
+        $output .= "</td><td class=\"code\">";
+        $output .= $geshi->parse_code();
+        $output .= "</td></tr></table>";
+    }
+    else
+    {
+        $output .= "<div class=\"code\">";
+        $output .= $geshi->parse_code();
+        $output .= "</div>";
+    }
+    return
+
+    $output .= "</div>\n";
+
+    return $output;
+}
+
+function wp_syntax_before_filter($content)
+{
+    return preg_replace_callback(
+        "/\s*<pre(?:lang=[\"']([\w-]+)[\"']|line=[\"'](\d*)[\"']|escaped=[\"'](true|false)?[\"']|\s)+>(.*)<\/pre>\s*/siU",
+        "wp_syntax_substitute",
+        $content
+    );
+}
+
+function wp_syntax_after_filter($content)
+{
+    global $wp_syntax_token;
+
+     $content = preg_replace_callback(
+         "/<p>\s*".$wp_syntax_token."(\d{3})\s*<\/p>/si",
+         "wp_syntax_highlight",
+         $content
+     );
+
+    return $content;
+}
+
+$wp_syntax_token = md5(uniqid(rand()));
+
+// Add styling
+add_action('wp_head', 'wp_syntax_head');
+
+// We want to run before other filters; hence, a priority of 0 was chosen.
+// The lower the number, the higher the priority.  10 is the default and
+// several formatting filters run at or around 6.
+add_filter('the_content', 'wp_syntax_before_filter', 0);
+add_filter('the_excerpt', 'wp_syntax_before_filter', 0);
+add_filter('comment_text', 'wp_syntax_before_filter', 0);
+
+// We want to run after other filters; hence, a priority of 99.
+add_filter('the_content', 'wp_syntax_after_filter', 99);
+add_filter('the_excerpt', 'wp_syntax_after_filter', 99);
+add_filter('comment_text', 'wp_syntax_after_filter', 99);
+
+?>