added language handler for TCL from patch in issue 256

Author: mikesamuel@gmail.com

CHANGES.html

@@ -151,5 +151,9 @@ <h2>29 March 2011</h2>
       vulnerability.  If you sanitize and prettify HTML from an
       untrusted source, sanitize first.
     </ul>
+    <h2>4 February 2013</h2>
+    <ul>
+      <li>Language handlers for Dart, TCL.</li>
+    </ul>
   </body>
 </html>

src/lang-tcl.js

@@ -0,0 +1,62 @@
+// Copyright (C) 2012 Pyrios.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+
+/**
+ * @fileoverview
+ * Registers a language handler for TCL
+ *
+ *
+ * To use, include prettify.js and this file in your HTML page.
+ * Then put your code in an HTML tag like
+ *      <pre class="prettyprint lang-tcl">proc foo {} {puts bar}</pre>
+ *
+ * I copy-pasted lang-lisp.js, so this is probably not 100% accurate.
+ * I used http://wiki.tcl.tk/1019 for the keywords, but tried to only
+ * include as keywords that had more impact on the program flow
+ * rather than providing convenience. For example, I included 'if'
+ * since that provides branching, but left off 'open' since that is more
+ * like a proc. Add more if it makes sense.
+ *
+ * @author pyrios@gmail.com
+ */
+
+PR['registerLangHandler'](
+    PR['createSimpleLexer'](
+        [
+         ['opn',             /^\{+/, null, '{'],
+         ['clo',             /^\}+/, null, '}'],
+         // A line comment that starts with ;
+         [PR['PR_COMMENT'],     /^#[^\r\n]*/, null, '#'],
+         // Whitespace
+         [PR['PR_PLAIN'],       /^[\t\n\r \xA0]+/, null, '\t\n\r \xA0'],
+         // A double quoted, possibly multi-line, string.
+         [PR['PR_STRING'],      /^\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)/, null, '"']
+        ],
+        [
+         [PR['PR_KEYWORD'],     /^(?:after|append|apply|array|break|case|catch|continue|error|eval|exec|exit|expr|for|foreach|if|incr|info|proc|return|set|switch|trace|uplevel|upvar|while)\b/, null],
+         [PR['PR_LITERAL'],
+          /^[+\-]?(?:[0#]x[0-9a-f]+|\d+\/\d+|(?:\.\d+|\d+(?:\.\d*)?)(?:[ed][+\-]?\d+)?)/i],
+         // A single quote possibly followed by a word that optionally ends with
+         // = ! or ?.
+         [PR['PR_LITERAL'],
+          /^\'(?:-*(?:\w|\\[\x21-\x7e])(?:[\w-]*|\\[\x21-\x7e])[=!?]?)?/],
+         // A word that optionally ends with = ! or ?.
+         [PR['PR_PLAIN'],
+          /^-*(?:[a-z_]|\\[\x21-\x7e])(?:[\w-]*|\\[\x21-\x7e])[=!?]?/i],
+         // A printable non-space non-special character
+         [PR['PR_PUNCTUATION'], /^[^\w\t\n\r \xA0()\"\\\';]+/]
+        ]),
+    ['tcl']);

tests/prettify_test_2.html

@@ -13,6 +13,7 @@
       "lang-lisp.js",
       "lang-xq.js",
       "lang-n.js",
+      "lang-tcl.js",
       "lang-tex.js"
  ];
   var styles = [
@@ -538,6 +539,22 @@ <h1>Dart language handler</h1>
 }
 </pre>
 
+<h1>TCL_lang</h1>
+<pre class="prettyprint lang-tcl" id="tcl_lang">#!/bin/tclsh
+proc fib {n} {
+    set a 0
+    set b 1
+    while {$n > 0} {
+        set tmp $a
+        set a [expr $a + $b]
+        set b $tmp
+        incr n -1
+    }
+    return $a
+}
+</pre>
+
+
 <script type="text/javascript">
 /**
  * maps ids of rewritten code to the expected output.
@@ -1002,7 +1019,21 @@ <h1>Dart language handler</h1>
         '  `END`TYPString`END`PLN raw `END`PUN=`END`PLN r`END' +
           '`STR\"This is a raw string, where \\n doesn\'t matter\"`END' +
           '`PUN;`END`PLN\n' +
-        '`END`PUN}`END'
+        '`END`PUN}`END',
+  tcl_lang: (
+      '`COM#!/bin/tclsh`END`PLN\n' +
+      '`END`KWDproc`END`PLN fib `END`OPN{`END`PLNn`END`CLO}`END`PLN `END`OPN{`END`PLN\n' +
+      '    `END`KWDset`END`PLN a `END`LIT0`END`PLN\n' +
+      '    `END`KWDset`END`PLN b `END`LIT1`END`PLN\n' +
+      '    `END`KWDwhile`END`PLN `END`OPN{`END`PUN$`END`PLNn `END`PUN&gt;`END`PLN `END`LIT0`END`CLO}`END`PLN `END`OPN{`END`PLN\n' +
+      '        `END`KWDset`END`PLN tmp `END`PUN$`END`PLNa\n' +
+      '        `END`KWDset`END`PLN a `END`PUN[`END`KWDexpr`END`PLN `END`PUN$`END`PLNa `END`PUN+`END`PLN `END`PUN$`END`PLNb`END`PUN]`END`PLN\n' +
+      '        `END`KWDset`END`PLN b `END`PUN$`END`PLNtmp\n' +
+      '        `END`KWDincr`END`PLN n `END`LIT-1`END`PLN\n' +
+      '    `END`CLO}`END`PLN\n' +
+      '    `END`KWDreturn`END`PLN `END`PUN$`END`PLNa\n' +
+      '`END`CLO}`END'
+  )
 };
 </script>