enable custom filters

.npmignore

@@ -1,3 +1,3 @@
 *.swp
 .git/*
-
+test/*

Readme.md

@@ -43,7 +43,16 @@ via npm:
     // Filters
     jst.render('Hello {{ it.name|e }}', {name: '<strong>jst</strong>'});
     jst.render('{{ it.entry|e|linebreaks }}', {entry: '...'});
-    jst.render('{{ it.value|add(100) }}', {value: 100});
+    jst.render('{{ it.value|add(123) }}', {value: 123});
+
+    // Custom filters
+    jst.addFilter('filterName', function(src) { ... });
+    jst.addFilters({anotherFilter: function(src) { ... }});
+    jst.render('{{ it.value|filterName }}', {value: 123});
+    jst.render('{{ it.value|anotherFilter }}', {value: 123});
+    // or
+    jst.addFilter('filterName', function(arg1, arg2, arg3) { return function(src) { ... }});
+    jst.render('{{ it.value|filterName(1, 2, 3) }}', {value: 123});
 
     // Client side
     <script src="jst.js"></script>

lib/filters.js

@@ -11,23 +11,31 @@ exports.convert = function(src) {
   });
 }
 
-exports.e = exports.escape = function(src) {
+function escape(src) {
   return typeof src !== 'string' ? src : src.replace(htmlre, htmlEscape);
 }
 
-exports.linebreaks = function(src) {
+function linebreaks(src) {
   return '<p>' + src.split(/\r\n|\n/g).join('</p><p>') + '</p>';
 }
 
-exports.linebreaksbr = function(src) {
+function linebreaksbr(src) {
   return src.replace(linere, '<br>$1');
 }
 
-exports.md = exports.markdown = function(src) {
-  return src; // TODO:
+function add(value) {
+  return function(src) { return Number(value) + Number(src); };
 }
 
-exports.add = function(value) {
-  return function(src) { return Number(value) + Number(src); };
+function markdown(src) {
+  return src; // TODO:
 }
 
+exports.filters = {
+  escape: escape, e: escape,
+  linebreaks: linebreaks,
+  linebreaksbr: linebreaksbr,
+  markdown: markdown, md: markdown,
+  add: add
+};
+

lib/i18n.js

@@ -1,7 +1,7 @@
 // i18n
 
 // _(ctx)
-exports.gettext = function(ctx) {
+exports.gettext = function(ctx, args) {
   return ctx; // TODO:
 }
 

lib/jst.js

@@ -9,7 +9,7 @@ var fs = require('fs'),
     filters = require('./filters'),
     i18n = require('./i18n');
 
-exports.version = '0.0.8';
+exports.version = '0.0.9';
 
 var _cache = {},
     _files = {},
@@ -26,6 +26,15 @@ exports.configure = function(options) {
     _options[prop] = options[prop];
 }
 
+exports.addFilter = function(name, fn) {
+  filters.filters[name] = fn;
+}
+
+exports.addFilters = function(newFilters) {
+  for (var name in newFilters)
+    filters.filters[name] = newFilters[name];
+}
+
 // compiler
 
 const prefixes = {
@@ -81,7 +90,7 @@ var compile = exports.compile = function(ctx) {
   var fn = new Function('it, _, filters', code);
 
   return function(args) {
-    return fn.call(this, args, i18n.gettext, filters);
+    return fn.call(this, args, i18n.gettext, filters.filters);
   }
 }
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "jst",
   "description": "Node JavaScript Template, A pretty high performance template engine",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "author": "Shaun Li <shonhen@gmail.com>",
   "keywords": ["template", "engine", "jst"],
   "main": "./lib/jst.js"