Added piped helpers

mustache.js

@@ -20,7 +20,7 @@ var Mustache;
   var exports = {};
 
   exports.name = "mustache.js";
-  exports.version = "0.7.0";
+  exports.version = "0.7.1";
   exports.tags = ["{{", "}}"];
 
   exports.Scanner = Scanner;
@@ -29,6 +29,7 @@ var Mustache;
 
   var whiteRe = /\s*/;
   var spaceRe = /\s+/;
+  var spaceReg = /\s+/g;
   var nonSpaceRe = /\S/;
   var eqRe = /\s*=/;
   var curlyRe = /\s*\}/;
@@ -143,10 +144,19 @@ var Mustache;
     return new Context(view, this);
   };
 
-  Context.prototype.lookup = function (name) {
+  Context.prototype.lookup = function (name, view) {
     var value = this._cache[name];
 
     if (!value) {
+
+      if (!view && name.indexOf("|") > 0) {
+        var names = name.split("|");
+        for (var i=0,len=names.length; i<len; i++) {
+          value = this.lookup(names[i], value);
+        }
+        return value;
+      }
+
       if (name === ".") {
         value = this.view;
       } else {
@@ -177,7 +187,7 @@ var Mustache;
     }
 
     if (typeof value === "function") {
-      value = value.call(this.view);
+      value = value.call(view||this.view);
     }
 
     return value;
@@ -545,8 +555,6 @@ var Mustache;
         throw new Error("Unclosed tag at " + scanner.pos);
       }
 
-      tokens.push([type, value, start, scanner.pos]);
-
       if (type === "name" || type === "{" || type === "&") {
         nonSpace = true;
       }
@@ -555,7 +563,13 @@ var Mustache;
       if (type === "=") {
         tags = value.split(spaceRe);
         tagRes = escapeTags(tags);
+      } else if (type !== "!") { // If not a comment
+        // The tag's content MUST be a non-whitespace character sequence NOT containing
+        // the current closing delimiter.
+        value = value.replace(spaceReg,'');
       }
+
+      tokens.push([type, value, start, scanner.pos]);
     }
 
     squashTokens(tokens);

test/_files/piped_helpers_date.js

@@ -0,0 +1,6 @@
+({
+    timestamp: 1,
+    iso8601Date: function() {
+        return new Date(this).toISOString();
+    }
+})

test/_files/piped_helpers_date.mustache

@@ -0,0 +1 @@
+{{timestamp | iso8601Date}}

test/_files/piped_helpers_date.txt

@@ -0,0 +1 @@
+1970-01-01T00:00:00.001Z

test/_files/piped_helpers_sum.js

@@ -0,0 +1,10 @@
+({
+    numbers: [1,2,3,4],
+    sum: function() {
+        var total = 0;
+        for (var i=0,len=this.length; i<len; i++) {
+            total += this[i];
+        }
+        return total;
+    }
+})

test/_files/piped_helpers_sum.mustache

@@ -0,0 +1 @@
+{{numbers|sum}}

test/_files/piped_helpers_sum.txt

@@ -0,0 +1 @@
+10

test/parse_test.js

@@ -7,7 +7,17 @@ var Mustache = require('./../mustache');
 var expectations = {
   '{{hi}}'                                  : [ [ 'name', 'hi', 0, 6 ] ],
   '{{hi.world}}'                            : [ [ 'name', 'hi.world', 0, 12 ] ],
+  /*
+   * This is not the assumption that I would have made based on the spec.
+   * https://github.com/mustache/spec/blob/master/specs/interpolation.yml
+   *
+   * The tag's content MUST be a non-whitespace character sequence NOT containing
+   * the current closing delimiter.
+   *
+   * See corrected version below.
   '{{hi . world}}'                          : [ [ 'name', 'hi . world', 0, 14 ] ],
+   */
+  '{{hi . world}}'                          : [ [ 'name', 'hi.world', 0, 14 ] ],
   '{{ hi}}'                                 : [ [ 'name', 'hi', 0, 7 ] ],
   '{{hi }}'                                 : [ [ 'name', 'hi', 0, 7 ] ],
   '{{ hi }}'                                : [ [ 'name', 'hi', 0, 8 ] ],