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node-task/node_modules/consolidate/lib/consolidate.js

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2014-09-18 16:17:29 -04:00
/*!
* consolidate
* Copyright(c) 2012 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*
* Engines which do not support caching of their file contents
* should use the `read()` function defined in consolidate.js
* On top of this, when an engine compiles to a `Function`,
* these functions should either be cached within consolidate.js
* or the engine itself via `options.cache`. This will allow
* users and frameworks to pass `options.cache = true` for
* `NODE_ENV=production`, however edit the file(s) without
* re-loading the application in development.
*/
/**
* Module dependencies.
*/
var fs = require('fs')
, path = require('path')
, join = path.join
, extname = path.extname
, dirname = path.dirname;
var readCache = {};
/**
* Require cache.
*/
var cacheStore = {};
/**
* Require cache.
*/
var requires = {};
/**
* Clear the cache.
*
* @api public
*/
exports.clearCache = function(){
cacheStore = {};
};
/**
* Conditionally cache `compiled` template based
* on the `options` filename and `.cache` boolean.
*
* @param {Object} options
* @param {Function} compiled
* @return {Function}
* @api private
*/
function cache(options, compiled) {
// cachable
if (compiled && options.filename && options.cache) {
delete readCache[options.filename];
cacheStore[options.filename] = compiled;
return compiled;
}
// check cache
if (options.filename && options.cache) {
return cacheStore[options.filename];
}
return compiled;
}
/**
* Read `path` with `options` with
* callback `(err, str)`. When `options.cache`
* is true the template string will be cached.
*
* @param {String} options
* @param {Function} fn
* @api private
*/
function read(path, options, fn) {
var str = readCache[path];
var cached = options.cache && str && 'string' == typeof str;
// cached (only if cached is a string and not a compiled template function)
if (cached) return fn(null, str);
// read
fs.readFile(path, 'utf8', function(err, str){
if (err) return fn(err);
// remove extraneous utf8 BOM marker
str = str.replace(/^\uFEFF/, '');
if (options.cache) readCache[path] = str;
fn(null, str);
});
}
/**
* Read `path` with `options` with
* callback `(err, str)`. When `options.cache`
* is true the partial string will be cached.
*
* @param {String} options
* @param {Function} fn
* @api private
*/
function readPartials(path, options, fn) {
if (!options.partials) return fn();
var partials = options.partials;
var keys = Object.keys(partials);
function next(index) {
if (index == keys.length) return fn(null);
var key = keys[index];
var file = join(dirname(path), partials[key] + extname(path));
read(file, options, function(err, str){
if (err) return fn(err);
options.partials[key] = str;
next(++index);
});
}
next(0);
}
/**
* fromStringRenderer
*/
function fromStringRenderer(name) {
return function(path, options, fn){
options.filename = path;
readPartials(path, options, function (err) {
if (err) return fn(err);
if (cache(options)) {
exports[name].render('', options, fn);
} else {
read(path, options, function(err, str){
if (err) return fn(err);
exports[name].render(str, options, fn);
});
}
});
};
}
/**
* Jade support.
*/
exports.jade = function(path, options, fn){
var engine = requires.jade;
if (!engine) {
try {
engine = requires.jade = require('jade');
} catch (err) {
engine = requires.jade = require('then-jade');
}
}
engine.renderFile(path, options, fn);
};
/**
* Jade string support.
*/
exports.jade.render = function(str, options, fn){
var engine = requires.jade;
if (!engine) {
try {
engine = requires.jade = require('jade');
} catch (err) {
engine = requires.jade = require('then-jade');
}
}
engine.render(str, options, fn);
};
/**
* Dust support.
*/
exports.dust = fromStringRenderer('dust');
/**
* Dust string support.
*/
exports.dust.render = function(str, options, fn){
var engine = requires.dust;
if (!engine) {
try {
engine = requires.dust = require('dust');
} catch (err) {
try {
engine = requires.dust = require('dustjs-helpers');
} catch (err) {
engine = requires.dust = require('dustjs-linkedin');
}
}
}
var ext = 'dust'
, views = '.';
if (options) {
if (options.ext) ext = options.ext;
if (options.views) views = options.views;
if (options.settings && options.settings.views) views = options.settings.views;
}
if (!options || (options && !options.cache)) engine.cache = {};
engine.onLoad = function(path, callback){
if ('' == extname(path)) path += '.' + ext;
if ('/' !== path[0]) path = views + '/' + path;
read(path, options, callback);
};
try {
var tmpl = cache(options) || cache(options, engine.compileFn(str));
tmpl(options, fn);
} catch (err) {
fn(err);
}
};
/**
* Swig support.
*/
exports.swig = fromStringRenderer('swig');
/**
* Swig string support.
*/
exports.swig.render = function(str, options, fn){
var engine = requires.swig || (requires.swig = require('swig'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Atpl support.
*/
exports.atpl = fromStringRenderer('atpl');
/**
* Atpl string support.
*/
exports.atpl.render = function(str, options, fn){
var engine = requires.atpl || (requires.atpl = require('atpl'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Liquor support,
*/
exports.liquor = fromStringRenderer('liquor');
/**
* Liquor string support.
*/
exports.liquor.render = function(str, options, fn){
var engine = requires.liquor || (requires.liquor = require('liquor'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* EJS support.
*/
exports.ejs = fromStringRenderer('ejs');
/**
* EJS string support.
*/
exports.ejs.render = function(str, options, fn){
var engine = requires.ejs || (requires.ejs = require('ejs'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Eco support.
*/
exports.eco = fromStringRenderer('eco');
/**
* Eco string support.
*/
exports.eco.render = function(str, options, fn){
var engine = requires.eco || (requires.eco = require('eco'));
try {
fn(null, engine.render(str, options));
} catch (err) {
fn(err);
}
};
/**
* Jazz support.
*/
exports.jazz = fromStringRenderer('jazz');
/**
* Jazz string support.
*/
exports.jazz.render = function(str, options, fn){
var engine = requires.jazz || (requires.jazz = require('jazz'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
tmpl.eval(options, function(str){
fn(null, str);
});
} catch (err) {
fn(err);
}
};
/**
* JQTPL support.
*/
exports.jqtpl = fromStringRenderer('jqtpl');
/**
* JQTPL string support.
*/
exports.jqtpl.render = function(str, options, fn){
var engine = requires.jqtpl || (requires.jqtpl = require('jqtpl'));
try {
engine.template(str, str);
fn(null, engine.tmpl(str, options));
} catch (err) {
fn(err);
}
};
/**
* Haml support.
*/
exports.haml = fromStringRenderer('haml');
/**
* Haml string support.
*/
exports.haml.render = function(str, options, fn){
var engine = requires.hamljs || (requires.hamljs = require('hamljs'));
try {
options.locals = options;
fn(null, engine.render(str, options).trimLeft());
} catch (err) {
fn(err);
}
};
/**
* Whiskers support.
*/
exports.whiskers = function(path, options, fn){
var engine = requires.whiskers || (requires.whiskers = require('whiskers'));
engine.__express(path, options, fn);
};
/**
* Whiskers string support.
*/
exports.whiskers.render = function(str, options, fn){
var engine = requires.whiskers || (requires.whiskers = require('whiskers'));
try {
fn(null, engine.render(str, options));
} catch (err) {
fn(err);
}
};
/**
* Coffee-HAML support.
*/
exports['haml-coffee'] = fromStringRenderer('haml-coffee');
/**
* Coffee-HAML string support.
*/
exports['haml-coffee'].render = function(str, options, fn){
var engine = requires.HAMLCoffee || (requires.HAMLCoffee = require('haml-coffee'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Hogan support.
*/
exports.hogan = fromStringRenderer('hogan');
/**
* Hogan string support.
*/
exports.hogan.render = function(str, options, fn){
var engine = requires.hogan || (requires.hogan = require('hogan.js'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl.render(options, options.partials));
} catch (err) {
fn(err);
}
};
/**
* templayed.js support.
*/
exports.templayed = fromStringRenderer('templayed');
/**
* templayed.js string support.
*/
exports.templayed.render = function(str, options, fn){
var engine = requires.templayed || (requires.templayed = require('templayed'));
try {
var tmpl = cache(options) || cache(options, engine(str));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Handlebars support.
*/
exports.handlebars = fromStringRenderer('handlebars');
/**
* Handlebars string support.
*/
exports.handlebars.render = function(str, options, fn) {
var engine = requires.handlebars || (requires.handlebars = require('handlebars'));
try {
for (var partial in options.partials) {
engine.registerPartial(partial, options.partials[partial]);
}
for (var helper in options.helpers) {
engine.registerHelper(helper, options.helpers[helper]);
}
var tmpl = cache(options) || cache(options, engine.compile(str, options));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
}
/**
* Underscore support.
*/
exports.underscore = fromStringRenderer('underscore');
/**
* Underscore string support.
*/
exports.underscore.render = function(str, options, fn) {
var engine = requires.underscore || (requires.underscore = require('underscore'));
try {
var tmpl = cache(options) || cache(options, engine.template(str, null, options));
fn(null, tmpl(options).replace(/\n$/, ''));
} catch (err) {
fn(err);
}
};
/**
* Lodash support.
*/
exports.lodash = fromStringRenderer('lodash');
/**
* Lodash string support.
*/
exports.lodash.render = function(str, options, fn) {
var engine = requires.lodash || (requires.lodash = require('lodash'));
try {
var tmpl = cache(options) || cache(options, engine.template(str, null, options));
fn(null, tmpl(options).replace(/\n$/, ''));
} catch (err) {
fn(err);
}
};
/**
* QEJS support.
*/
exports.qejs = function (path, options, fn) {
try {
var engine = requires.qejs || (requires.qejs = require('qejs'));
engine.renderFile(path, options).nodeify(fn);
} catch (err) {
fn(err);
}
};
/**
* QEJS string support.
*/
exports.qejs.render = function (str, options, fn) {
try {
var engine = requires.qejs || (requires.qejs = require('qejs'));
engine.render(str, options).then(function (result) {
fn(null, result);
}, function (err) {
fn(err);
}).end();
} catch (err) {
fn(err);
}
};
/**
* Walrus support.
*/
exports.walrus = fromStringRenderer('walrus');
/**
* Walrus string support.
*/
exports.walrus.render = function (str, options, fn) {
var engine = requires.walrus || (requires.walrus = require('walrus'));
try {
var tmpl = cache(options) || cache(options, engine.parse(str));
fn(null, tmpl.compile(options));
} catch (err) {
fn(err);
}
};
/**
* Mustache support.
*/
exports.mustache = fromStringRenderer('mustache');
/**
* Mustache string support.
*/
exports.mustache.render = function(str, options, fn) {
var engine = requires.mustache || (requires.mustache = require('mustache'));
try {
fn(null, engine.to_html(str, options, options.partials));
} catch (err) {
fn(err);
}
};
/**
* Just support.
*/
exports.just = function(path, options, fn){
var engine = requires.just;
if (!engine) {
var JUST = require('just');
engine = requires.just = new JUST();
}
engine.configure({ useCache: options.cache });
engine.render(path, options, fn);
};
/**
* Just string support.
*/
exports.just.render = function(str, options, fn){
var JUST = require('just');
var engine = new JUST({ root: { page: str }});
engine.render('page', options, fn);
};
/**
* ECT support.
*/
exports.ect = function(path, options, fn){
var engine = requires.ect;
if (!engine) {
var ECT = require('ect');
engine = requires.ect = new ECT();
}
engine.configure({ cache: options.cache });
engine.render(path, options, fn);
};
/**
* ECT string support.
*/
exports.ect.render = function(str, options, fn){
var ECT = require('ect');
var engine = new ECT({ root: { page: str }});
engine.render('page', options, fn);
};
/**
* mote support.
*/
exports.mote = fromStringRenderer('mote');
/**
* mote string support.
*/
exports.mote.render = function(str, options, fn){
var engine = requires.mote || (requires.mote = require('mote'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Toffee support.
*/
exports.toffee = function(path, options, fn){
var toffee = requires.toffee || (requires.toffee = require('toffee'));
toffee.__consolidate_engine_render(path, options, fn);
};
/**
* Toffee string support.
*/
exports.toffee.render = function(str, options, fn) {
var engine = requires.toffee || (requires.toffee = require('toffee'));
try {
engine.str_render(str, options,fn);
} catch (err) {
fn(err);
}
};
/**
* doT support.
*/
exports.dot = fromStringRenderer('dot');
/**
* doT string support.
*/
exports.dot.render = function (str, options, fn) {
var engine = requires.dot || (requires.dot = require('dot'));
try {
var tmpl = cache(options) || cache(options, engine.compile(str, options && options._def));
fn(null, tmpl(options));
} catch (err) {
fn(err);
}
};
/**
* Ractive support.
*/
exports.ractive = fromStringRenderer('ractive');
/**
* Ractive string support.
*/
exports.ractive.render = function(str, options, fn){
var engine = requires.ractive || (requires.ractive = require('ractive'));
options.template = str;
if (options.data === null || options.data === undefined)
{
options.data = options;
}
try {
fn(null, new engine(options).renderHTML());
} catch (err) {
fn(err);
}
};
/**
* Nunjucks support.
*/
exports.nunjucks = fromStringRenderer('nunjucks');
/**
* Nunjucks string support.
*/
exports.nunjucks.render = function(str, options, fn) {
var engine = requires.nunjucks || (requires.nunjucks = require('nunjucks'));
engine.renderString(str, options, fn);
};