mirror of
https://github.com/zebrajr/express.git
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83 lines
1.7 KiB
JavaScript
83 lines
1.7 KiB
JavaScript
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/*!
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* Express - View
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* Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
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* MIT Licensed
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*/
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/**
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* Module dependencies.
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*/
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var path = require('path')
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, fs = require('fs')
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, dirname = path.dirname
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, basename = path.basename
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, extname = path.extname
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, exists = path.existsSync
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, join = path.join;
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/**
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* Expose `View`.
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*/
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module.exports = View;
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/**
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* Initialize a new `View` with the given `name`.
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*
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* Options:
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*
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* - `defaultEngine` the default template engine name
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* - `engines` template engine require() cache
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* - `root` root path for view lookup
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*
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* @param {String} name
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* @param {Object} options
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* @api private
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*/
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function View(name, options) {
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options = options || {};
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this.name = name;
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this.root = options.root;
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var engines = options.engines;
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this.defaultEngine = options.defaultEngine;
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this.ext = extname(name);
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if (!this.ext) name += '.' + (this.ext = this.defaultEngine);
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this.engine = engines[this.ext] || (engines[this.ext] = require(this.ext));
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this.path = this.lookup(name);
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this.string = fs.readFileSync(this.path, 'utf8');
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}
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/**
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* Lookup view by the given `path`
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*
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* @param {String} path
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* @return {String}
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* @api private
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*/
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View.prototype.lookup = function(path){
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// <path>.<engine>
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path = join(this.root, path);
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if (exists(path)) return path;
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// <path>/index.<engine>
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path = join(dirname(path), basename(path, '.' + this.ext), 'index.' + this.ext);
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if (exists(path)) return path;
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};
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/**
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* Render with the given `options` and callback `fn(err, str)`.
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*
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* @param {Object} options
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* @param {Function} fn
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* @api private
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*/
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View.prototype.render = function(options, fn){
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options.filename = this.path;
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this.engine.render(this.string, options, fn);
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};
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