1 //<script type="text/javascript">
4 * Author: Julien Lecomte <jlecomte@yahoo-inc.com>
5 * Copyright (c) 2007, Yahoo! Inc. All rights reserved.
6 * Code licensed under the BSD License:
7 * http://developer.yahoo.net/yui/license.txt
9 * This code is a port of Isaac Schlueter's cssmin utility.
11 * Usage: seed buildSDK/cssminify.js {OUTPUT} {files........}
16 File = imports.File.File;
17 GLib = imports.gi.GLib;
18 // let's see if this works..
19 // should be run from top level..
20 var pa = GLib.get_current_dir();
22 var args = Array.prototype.slice.call(Seed.argv);
24 args.shift(); // pack.js
26 var outname = args.shift();
27 //println(pack(File.read(pa+'/css/basic-dialog.css')));
29 //@import url("reset-min.css");
31 args.forEach(function(l) {
33 //out += pack(File.read(pa+'/css/' + l)).replace(/\}/g, "}\n")+"\n";
34 out += pack(File.read(l)) + "\n";
37 File.write(outname, out);
40 print("written " + outname);
55 function removeComments(str)
61 while ((si = str.indexOf("/*")) > -1) {
62 ei = str.indexOf("*/");
66 if (str.charAt(ei-1) == '\\') { // eg. /* \*/
69 // Looks like a comment to hide rules from IE Mac.
70 // Leave this comment, and the following one, alone...
73 r += str.substring(0, ei) ;
74 str = str.substring(ei);
80 r += str.substring(0, ei) ;
81 str = str.substring(ei+2);
85 r += str.substring(0, si) ;
86 str = str.substring(ei+2);
90 r += str.substring(0, 2);
91 str = str.substring(2);
99 istr = removeComments(istr);
100 //println("after comments remove: " + istr);
102 // Normalize all whitespace strings to single spaces. Easier to work with that way.
103 istr = istr.replace(/\s+/g, ' ');
105 // Make a pseudo class for the Box Model Hack ????
106 //css = css.replaceAll("\"\\\\\"}\\\\\"\"", "___PSEUDOCLASSBMH___");
107 istr = istr.replace(/"\\"\}\\"/g, "___PSEUDOCLASSBMH___");
109 // Remove the spaces before the things that should not have spaces before them.
110 // But, be careful not to turn "p :link {...}" into "p:link{...}"
111 // Swap out any pseudo-class colons with the token, and then swap back.
113 istr = istr.replace(/(^|\})(([^\{:])+:)+([^\{]*\{)/g, function(m) {
114 return m.replace(/:/g, "___PSEUDOCLASSCOLON___");
118 istr = istr.replace(/\s+([!{};:>+\(\)\],])/g, "$1");
119 istr = istr.replace(/___PSEUDOCLASSCOLON___/g, ":");
121 // Remove the spaces after the things that should not have spaces after them.
122 istr = istr.replace(/([!{}:;>+\(\[,])\s+/g, "$1");
124 // Add the semicolon where it's missing.
125 istr = istr.replace(/([^;\}])\}/g, "$1;}");
127 // Replace 0(px,em,%) with 0.
128 istr = istr.replace(/([\s:])(0)(px|em|%|in|cm|mm|pc|pt|ex)/g, "$1$2");
130 // Replace 0 0 0 0; with 0. (by this time, we have reduced spaces etc..
131 istr = istr.replace(/:0 0 0 0;/g, ":0;");
132 istr = istr.replace(/:0 0 0;/g, ":0;");
133 istr = istr.replace(/:0 0;/g, ":0;");
134 // Replace background-position:0; with background-position:0 0;
135 istr = istr.replace(/background-position:0;/g, "background-position:0 0;");
137 // Replace 0.6 to .6, but only when preceded by : or a white-space
138 istr = istr.replace(/(:|\s)0+\.(\d+)/g, "$1.$2");
140 // Shorten colors from rgb(51,102,153) to #336699
141 // This makes it more likely that it'll get further compressed in the next step.
143 istr = istr.replace(/rgb\s*\(\s*([0-9,\s]+)\s*\)/g, function(m, c)
145 var rgb = c.split(',');
147 for (var i = 0; i < rgb.length; i++) {
148 var val = parseInt(rgb[i]);
152 hx+=val.toString(16);
160 // Shorten colors from #AABBCC to #ABC. Note that we want to make sure
161 // the color is not preceded by either ", " or =. Indeed, the property
162 // filter: chroma(color="#FFFFFF");
164 // filter: chroma(color="#FFF");
165 // which makes the filter break in IE.
167 istr = istr.replace(/([^"'=\s])(\s*)#([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])/g,
168 function(m, g1,g2,g3,g4,g5,g6,g7,g8) {
172 if (g3.toLowerCase() == g4.toLowerCase() &&
173 g5.toLowerCase() == g6.toLowerCase() &&
174 g7.toLowerCase() == g8.toLowerCase()) {
176 return g1+g2+'#' + g3+g5+g7;
184 // Remove empty rules.
185 istr = istr.replace(/[^\}]+\{;\}/g, "");
187 if (linebreakpos >= 0) {
188 // Some source control tools don't like it when files containing lines longer
189 // than, say 8000 characters, are checked in. The linebreak option is used in
190 // that case to split long lines after a specific column.
192 int linestartpos = 0;
193 sb = new StringBuffer(css);
194 while (i < sb.length()) {
195 char c = sb.charAt(i++);
196 if (c == '}' && i - linestartpos > linebreakpos) {
205 // Replace the pseudo class for the Box Model Hack
206 istr = istr.replace(/___PSEUDOCLASSBMH___/g, "\"\\\\\"}\\\\\"\"");
208 // Trim the final string (for any leading or trailing white spaces)
209 istr = istr.replace(/^\s+/g, '');
210 istr = istr.replace(/\s+$/g, '');
213 // Write the output...