添加sass语法支持

compile.js

@@ -0,0 +1,111 @@
+/**
+ * 接管sass的@import内嵌，让fis-sass支持sass语法内嵌。
+ *
+ * 目前fis-sass无法改动libsass(第三方库)内部的代码以至于无法支持sass格式的文件`@import`内嵌。
+ *
+ * 所以这里接管内嵌，绕过fis-sass处理`@import`内嵌过程。
+ *
+ * 目前fis-sass的是sass语法支持，主要是用了[sass2scss](https://github.com/mgreter/sass2scss)库，
+ * 目前只有程序的最外成入口处调用了这个功能，libsass的内联file读取没有经过这一过程，所以这个功能是不完美支持sass语法的。
+ */
+var map = (function() {
+    return {
+        reg: /\/\*embed:(.*?)\*\//ig,
+
+        wrap: function( value ) {
+            return '/*embed:' + value + '*/';
+        }
+    }
+})();
+
+// 匹配sass内嵌代码：@import 'xxx'
+function _process( content ) {
+    var reg = /@import\s*('|")?(.+?)\1(?:;)?$/img;
+    var rUrl = /^url/i;
+
+    return content.replace( reg, function( all, quote, value ) {
+
+        // 不处理@import url(xxx);
+        if ( value && rUrl.exec( value ) ) {
+            return all;
+        }
+
+        return map.wrap( value );
+    });
+}
+
+// 查找文件。
+function lookup( name, ext, paths ) {
+    var files = [],
+        filename = name,
+        basename = filename,
+        dirname = '',
+        mapping,
+        i, j, len, len2, path, info;
+
+    files.push( filename );
+
+    if ( /^(.*(?:\/|\\))([^\/\\]*?)$/.exec( filename ) ) {
+        dirname = RegExp.$1;
+        basename = RegExp.$2;
+    }
+
+    // 自动加后缀。
+    if ( !/\.\w+$/.exec( basename ) ) {
+        filename = dirname + basename + ext;
+        files.push( filename );
+
+        if ( !/^_/.exec( basename ) ) {
+            filename = dirname + '_' + basename + ext;
+            files.push( filename );
+        }
+
+        mapping = {
+            '.sass': '.scss',
+            '.scss': '.sass'
+        };
+
+        if ( mapping[ ext ] ) {
+            filename = dirname + basename + mapping[ ext ];
+            files.push( filename );
+
+            if ( !/^_/.exec( basename ) ) {
+                filename = dirname + '_' + basename + mapping[ ext ];
+                files.push( filename );
+            }
+        }
+    }
+
+    len = files.length;
+    len2 = paths.length;
+
+    for ( i = 0; i < len; i++ ) {
+        name = files[ i ];
+
+        for ( j = 0; j < len2; j++ ) {
+            info = fis.uri( name, paths[ j ] );
+
+            if( info.file && info.file.isFile() ) {
+                return info.file;
+            }
+        }
+    }
+}
+
+var compile = exports.before = function( content, ext, paths ) {
+    return _process( content ).replace( map.reg, function( all, value ) {
+        var file = lookup( value, ext, paths );
+
+        if ( file ) {
+            // @todo 祈祷，不要循环内嵌吧。
+            return compile( file.getContent(), file.ext, [ file.dirname ].concat( paths ) );
+        } else {
+            fis.log.error( value + ' not found!' );
+            return '';
+        }
+    });
+};
+
+exports.after = function( content, ext, paths ) {
+    return content;
+};

index.js

@@ -7,11 +7,17 @@
 
 var sass = require('fis-sass');
 var root = fis.project.getProjectPath();
+var compile = require('./compile.js');
 
 module.exports = function(content, file, conf){
     var opts = fis.util.clone(conf);
-    opts.data = content;
-    opts.include_paths = conf.include_paths || [];
-    opts.include_paths = opts.include_paths.concat([ file.dirname, root ]);
-    return sass.renderSync(opts);
+
+    opts.include_paths = conf.include_paths || [ root ];
+    opts.include_paths.unshift( file.dirname );
+
+    opts.data = compile.before( content, file.ext, opts.include_paths );
+    content = sass.renderSync( opts );
+    content = compile.after( content, file.ext, opts.include_paths );
+
+    return content;
 };

package.json

@@ -1,7 +1,7 @@
 {
     "name" : "fis-parser-sass",
     "description" : "A parser plugin for fis to compile sass file.",
-    "version" : "0.0.9",
+    "version" : "0.0.10",
     "author" : "FIS Team <[email protected]>",
     "homepage" : "http://fis.baidu.com/",
     "keywords": [ "fis", "sass" ],
@@ -17,6 +17,6 @@
         "test" : "mocha test/ut --recursive"
     },
     "dependencies" : {
-        "fis-sass" : "0.1.11"
+        "fis-sass" : "0.1.12"
     }
 }