templify/lib/template.js

A simple template system originally based on zparse

var parse = require("./parse").parse,
    when = require("promised-io/promise").when,
    defaultRules = require("./rules"),
    toJSON = require("perstore/util/json-ext").stringify;

var Template = exports.Template = function(source, options, noWrapper){
	var options = options || {};

	options.resolver = options.resolver || require("./resolver").Resolver;

	var state = {
		resolver: options.resolver
	};
	
	options.rules=options.rules || require("./rules").Rules(options);

	if (options.extension){
		state.extension = options.extension;
	}

	// header for compiled template function
	options.header = 'return { forEach: function(_write){try{with($data){';

	// footer for compiled template function
	options.footer = '}}catch(err){console.log("Template Error: "+err)}}}'; 

	return when(source, function(source){
		var parsed = parse(source, state, options); 
		return when(parsed, function(parsed){
			if (!noWrapper){
				var wrapped = [options.header,parsed, options.footer].join('');
				parsed = new Function("$data", wrapped);
			}
			return parsed;
		});
	});
}

exports.extendTemplate = function(state,options){
	if (state._extend){
		options.extension=state._extend;
	}
	var templateString = options.resolver(options.extension.templateName, true)
	return Template(templateString, options, true);
};