Merge pull request #388 from erwan/rhino

Rhino support

Makefile

@@ -18,6 +18,7 @@ HEADER = build/header.js
 VERSION = `cat package.json | grep version \
 														| grep -o '[0-9]\.[0-9]\.[0-9]\+'`
 DIST = dist/less-${VERSION}.js
+RHINO = dist/less-rhino-${VERSION}.js
 DIST_MIN = dist/less-${VERSION}.min.js
 
 less:
@@ -35,6 +36,18 @@ less:
 	@@echo "})(window);" >> ${DIST}
 	@@echo ${DIST} built.
 
+rhino:
+	@@mkdir -p dist
+	@@touch ${RHINO}
+	@@cat build/require-rhino.js\
+	      build/ecma-5.js\
+	      ${SRC}/parser.js\
+	      ${SRC}/functions.js\
+	      ${SRC}/tree/*.js\
+	      ${SRC}/tree.js\
+	      ${SRC}/rhino.js > ${RHINO}
+	@@echo ${RHINO} built.
+
 min: less
 	@@echo minifying...
 	@@cat ${HEADER} | sed s/@VERSION/${VERSION}/ > ${DIST_MIN}

build/require-rhino.js

@@ -0,0 +1,7 @@
+//
+// Stub out `require` in rhino
+//
+function require(arg) {
+    return less[arg.split('/')[1]];
+};
+

lib/less/parser.js

@@ -1,12 +1,25 @@
 var less, tree;
 
-if (typeof(window) === 'undefined') {
+var BROWSER = 0; var NODE = 1; var RHINO = 2;
+var engine;
+
+if (typeof environment === "object" && ({}).toString.call(environment) === "[object Environment]") {
+    // Rhino
+    // Details on how to detect Rhino: https://github.com/ringo/ringojs/issues/88
+    less = {};
+    tree = less.tree = {};
+    engine = RHINO;
+} else if (typeof(window) === 'undefined') {
+    // Node.js
     less = exports,
     tree = require('less/tree');
+    engine = NODE;
 } else {
+    // Browser
     if (typeof(window.less) === 'undefined') { window.less = {} }
     less = window.less,
     tree = window.less.tree = {};
+    engine = BROWSER;
 }
 //
 // less.js - parser
@@ -1088,7 +1101,7 @@ less.Parser = function Parser(env) {
     };
 };
 
-if (typeof(window) !== 'undefined') {
+if (engine === BROWSER || engine === RHINO) {
     //
     // Used by `@import` directives
     //

lib/less/rhino.js

@@ -0,0 +1,60 @@
+var name;
+
+function loadStyleSheet(sheet, callback, reload, remaining) {
+    var sheetName = name.slice(0, name.lastIndexOf('/') + 1) + sheet.href;
+    var input = readFile(sheetName);
+    var parser = new less.Parser();
+    parser.parse(input, function (e, root) {
+        if (e) {
+            print("Error: " + e);
+            quit(1);
+        }
+        callback(root, sheet, { local: false, lastModified: 0, remaining: remaining });
+    });
+
+    // callback({}, sheet, { local: true, remaining: remaining });
+}
+
+function writeFile(filename, content) {
+    var fstream = new java.io.FileWriter(filename);
+    var out = new java.io.BufferedWriter(fstream);
+    out.write(content);
+    out.close();
+}
+
+// Command line integration via Rhino
+(function (args) {
+    name = args[0];
+    var output = args[1];
+
+    if (!name) {
+        print('No files present in the fileset; Check your pattern match in build.xml');
+        quit(1);
+    }
+    path = name.split("/");path.pop();path=path.join("/")
+
+    var input = readFile(name);
+
+    if (!input) {
+        print('lesscss: couldn\'t open file ' + name);
+        quit(1);
+    }
+
+    var result;
+    var parser = new less.Parser();
+    parser.parse(input, function (e, root) {
+        if (e) {
+            quit(1);
+        } else {
+            result = root.toCSS();
+            if (output) {
+                writeFile(output, result);
+                print("Written to " + output);
+            } else {
+                print(result);
+            }
+            quit(0);
+        }
+    });
+    print("done");
+}(arguments));