Very basic money filter

Changelog

@@ -1,3 +1,11 @@
+1.3.3-alpha / 2016-09-15
+==================
+
+* Tags `increment`, `decrement`
+* Money filters `money`, `money_with_currency`, `money_without_trailing_zeros`, `money_without_currency`
+* Math filters `ceil`, `floor`, `round`
+* Fix range to support variable, eg. (start..end)
+
 1.3.2 / 2015-04-27
 ==================
 

Gemfile

@@ -2,3 +2,4 @@ source 'http://rubygems.org'
 
 gem 'sprockets', '~>1.0.2'
 gem 'rake', '~> 10.4.2'
+gem 'listen', '~> 3.1.5'

dist/liquid.js

@@ -406,16 +406,22 @@ Liquid.Context = Liquid.Class.extend({
               left  = parseInt(range[1]),
               right = parseInt(range[2]),
               arr   = [];
-          if (isNaN(left) || isNaN(right)) {
-            left = range[1].charCodeAt(0);
-            right = range[2].charCodeAt(0);
-
-            var limit = right-left+1;
-            for (var i=0; i<limit; i++) arr.push(String.fromCharCode(i+left));
-          } else { // okay to make array
-            var limit = right-left+1;
-            for (var i=0; i<limit; i++) arr.push(i+left);
+          if(isNaN(left)){
+            let varLeft = this.resolve(range[1]);
+            left = parseInt(varLeft);
+            if(isNaN(left)){
+              throw new Error('Incorrect param for range: ' + key);
+            }
+          }
+          if(isNaN(right)){
+            let varRight = this.resolve(range[2]);
+            right = parseInt(varRight);
+            if(isNaN(right)){
+              throw new Error('Incorrect param for range: ' + key);
+            }
           }
+          var limit = right-left+1;
+          for (var i=0; i<limit; i++) arr.push(i+left);
           return arr;
         } else {
           var result = this.variable(key);
@@ -1230,8 +1236,6 @@ Liquid.Template.registerTag( 'increment', Liquid.Tag.extend({
 
   init: function(tagName, markup, tokens) {
     var parts = markup.match(this.tagSyntax);
-    console.log(tagName, markup, tokens);
-    console.log(parts[1]);
     if( parts ) {
       this.name = parts[1];
     } else {
@@ -1264,8 +1268,6 @@ Liquid.Template.registerTag( 'decrement', Liquid.Tag.extend({
 
   init: function(tagName, markup, tokens) {
     var parts = markup.match(this.tagSyntax);
-    console.log(tagName, markup, tokens);
-    console.log(parts[1]);
     if( parts ) {
       this.name = parts[1];
     } else {
@@ -1292,6 +1294,39 @@ Liquid.Template.registerTag( 'decrement', Liquid.Tag.extend({
     return output;
   }
 }));
+(function(Liquid){
+
+var Money = {
+  getCurrencySign: function(){
+    var currencySign = '$'; // TODO: configurable currency
+    return currencySign;
+  },
+  getCurrencyCode: function(){
+    var currencyCode = ''; // TODO: configurable currency
+    return currencyCode ? ' ' + currencyCode : '';
+  },
+  format: function(num, currencySign, trimZero){
+    var ret = '0.00';
+    try{
+      num = parseFloat(('' + num) || ret);
+      if(trimZero !== true){
+        num = Math.round(num * 100) / 100;
+      }
+      var tokens = ('' + num).match(/^(-?)(\d+)(.(\d+))?$/) || [];
+      var sign = tokens[1] || '';
+      var digit = tokens[2] || '0';
+      var dp = ((tokens[4] || '') + '00');
+      if(trimZero){
+        dp = dp.replace(/0+$/, '');
+      }else{
+        dp = dp.substr(0, 2);
+      }
+      ret = sign + currencySign + digit + (dp.length > 0 ? '.' + dp : '');
+    } catch(e){}
+    return ret;
+  }
+};
+
 Liquid.Template.registerFilter({
 
   _HTML_ESCAPE_MAP: {
@@ -1444,6 +1479,19 @@ Liquid.Template.registerFilter({
     return (Number(input) || 0) % (Number(number) || 0);
   },
 
+  ceil: function(input) {
+    return Math.ceil(Number(input) || 0);
+  },
+
+  floor: function(input) {
+    return Math.floor(Number(input) || 0);
+  },
+
+  round: function(input, dp) {
+    let pow = Math.pow(10, dp || 0);
+    return Math.round((Number(input) || 0) * pow) / pow;
+  },
+
   map: function(input, property) {
     input = input || [];
     var results = [];
@@ -1473,10 +1521,28 @@ Liquid.Template.registerFilter({
 
   append: function(input, string) {
     return '' + (input || '').toString() + (string || '').toString();
-  }
+  },
+
+  money: function(input){
+    return Money.format(input, Money.getCurrencySign(), false);
+  },
+
+  money_with_currency: function(input){
+    return Money.format(input, Money.getCurrencySign(), false) + Money.getCurrencyCode();
+  },
+
+  money_without_trailing_zeros: function(input){
+    return Money.format(input, Money.getCurrencySign(), true);
+  },
+
+  money_without_currency: function(input){
+    return Money.format(input, '', false);
+  },
 
 });
 
+})(Liquid);
+
 
 if(!(new Date()).strftime) {(function(){
 Date.ext={};Date.ext.util={};Date.ext.util.xPad=function(x,pad,r){if(typeof (r)=="undefined"){r=10}for(;parseInt(x,10)<r&&r>1;r/=10){x=pad.toString()+x}return x.toString()};Date.prototype.locale="en-GB";if(document.getElementsByTagName("html")&&document.getElementsByTagName("html")[0].lang){Date.prototype.locale=document.getElementsByTagName("html")[0].lang}Date.ext.locales={};Date.ext.locales.en={a:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],A:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],b:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],B:["January","February","March","April","May","June","July","August","September","October","November","December"],c:"%a %d %b %Y %T %Z",p:["AM","PM"],P:["am","pm"],x:"%d/%m/%y",X:"%T"};