77 lines
1.8 KiB
JavaScript
77 lines
1.8 KiB
JavaScript
/**
|
|
* Module dependencies.
|
|
*/
|
|
|
|
var path = require('path')
|
|
, fs = require('fs')
|
|
, utils = require('./utils')
|
|
, dirname = path.dirname
|
|
, basename = path.basename
|
|
, extname = path.extname
|
|
, exists = fs.existsSync || path.existsSync
|
|
, join = path.join;
|
|
|
|
/**
|
|
* Expose `View`.
|
|
*/
|
|
|
|
module.exports = View;
|
|
|
|
/**
|
|
* Initialize a new `View` with the given `name`.
|
|
*
|
|
* Options:
|
|
*
|
|
* - `defaultEngine` the default template engine name
|
|
* - `engines` template engine require() cache
|
|
* - `root` root path for view lookup
|
|
*
|
|
* @param {String} name
|
|
* @param {Object} options
|
|
* @api private
|
|
*/
|
|
|
|
function View(name, options) {
|
|
options = options || {};
|
|
this.name = name;
|
|
this.root = options.root;
|
|
var engines = options.engines;
|
|
this.defaultEngine = options.defaultEngine;
|
|
var ext = this.ext = extname(name);
|
|
if (!ext && !this.defaultEngine) throw new Error('No default engine was specified and no extension was provided.');
|
|
if (!ext) name += (ext = this.ext = ('.' != this.defaultEngine[0] ? '.' : '') + this.defaultEngine);
|
|
this.engine = engines[ext] || (engines[ext] = require(ext.slice(1)).__express);
|
|
this.path = this.lookup(name);
|
|
}
|
|
|
|
/**
|
|
* Lookup view by the given `path`
|
|
*
|
|
* @param {String} path
|
|
* @return {String}
|
|
* @api private
|
|
*/
|
|
|
|
View.prototype.lookup = function(path){
|
|
var ext = this.ext;
|
|
|
|
// <path>.<engine>
|
|
if (!utils.isAbsolute(path)) path = join(this.root, path);
|
|
if (exists(path)) return path;
|
|
|
|
// <path>/index.<engine>
|
|
path = join(dirname(path), basename(path, ext), 'index' + ext);
|
|
if (exists(path)) return path;
|
|
};
|
|
|
|
/**
|
|
* Render with the given `options` and callback `fn(err, str)`.
|
|
*
|
|
* @param {Object} options
|
|
* @param {Function} fn
|
|
* @api private
|
|
*/
|
|
|
|
View.prototype.render = function(options, fn){
|
|
this.engine(this.path, options, fn);
|
|
};
|