refs #134: remove whitespace on windows.

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

lib/file.js

@@ -149,7 +149,7 @@ file.meta = function(filename) {
   line.split(' ').forEach(function(x) {
     const v = x.split('=');
     if (v.length == 2) {
-      m[v[0]] = v[1];
+      m[v[0]] = v[1].trim();
     }
   });
 

test/test_file.js

@@ -81,6 +81,18 @@ describe('file', function() {
       assert.equal(meta.lang, 'javascript');
     });
 
+    it('should meta ok with white space', function() {
+      file.data = x => [
+        '/ *',
+        '  * @lc app=leetcode id=123\t  \t  lang=javascript\r',
+        '  * /'
+      ].join('\n');
+      const meta = file.meta('dummy');
+      assert.equal(meta.app, 'leetcode')
+      assert.equal(meta.id, '123');
+      assert.equal(meta.lang, 'javascript');
+    });
+
     it('should meta ok within file name', function() {
       file.data = x => [
         '/ *',