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require.js
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require.js
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/*
* grunt-require
* https://github.com/asciidisco/grunt-requirejs
*
* Copyright (c) 2012 asciidisco
* Licensed under the MIT license.
*/
module.exports = function (grunt) {
'use strict';
// Grunt utilities.
var task = grunt.task;
var file = grunt.file;
var log = grunt.log;
var verbose = grunt.verbose;
var fail = grunt.fail;
var config = grunt.config;
var utils = typeof grunt.utils !== 'undefined' ? grunt.utils : grunt.util;
var _ = utils._;
// shortcuts
var isArray = utils._.isArray;
var isFunction = utils._.isFunction;
var clone = utils._.clone;
// lib dependencies
var rjs = require('requirejs');
var $ = require('jQuery');
var npm = require('npm');
var fs = require('fs');
// ==========================================================================
// PRIVATE HELPER FUNCTIONS
// ==========================================================================
// runs the require js optimizer
var optimize = function (config, done, cb) {
return function (chgConfig) {
grunt.helper('optimize', {
config: typeof chgConfig === 'undefined' ? config : chgConfig,
done: done,
cb: cb
});
};
};
// runs the almond js html file replacement
var replaceAlmond = function (config, done, cb) {
return function (chgConfig) {
grunt.helper('replaceRequireWithAlmond', {
config: typeof chgConfig === 'undefined' ? config : chgConfig,
done: done,
cb: cb
});
};
};
// ==========================================================================
// TASKS
// ==========================================================================
grunt.registerTask('requirejs', 'Runs requirejs optimizer', function(mode) {
var done = this.async(),
rqConfig = config.get('requirejs');
rqConfig = mode && rqConfig[mode] || rqConfig.js || rqConfig.css || rqConfig;
// log process start
log.ok('RequireJS optimizer started');
// execute clear target helper
grunt.helper('almond', {
config: rqConfig,
done: done,
cb: optimize(rqConfig, done, replaceAlmond(rqConfig, done))
});
return done;
});
// ==========================================================================
// HELPERS
// ==========================================================================
// helper to execute requirejs optimizer function
grunt.registerHelper('optimize', function (options) {
// call rjs optimizer
rjs.optimize(options.config, function (result) {
// check if verbose flag is set, then log result
grunt.verbose.ok(result);
// log process end
log.ok('RequireJS optimizer finished');
// display sizes of modules
if (isArray(options.config.modules) && options.config.dir) {
options.config.modules.forEach(function (module) {
try {
// Query the entry
var stats = fs.lstatSync(module._buildPath);
// Is it a file
if (stats.isFile()) {
grunt.helper('require_size_info', module.name, options.config.optimize, grunt.file.read(module._buildPath, 'utf-8'));
}
}
catch (e) {
log.warn('Stats not available for module: ' + module.name);
}
});
}
// check for callback, else mark as done
if (isFunction(options.cb)) {
options.cb();
} else {
options.done();
}
});
});
// helper to execute requirejs optimizer function
grunt.registerHelper('replaceRequireWithAlmond', function (options) {
// check if we should replace require with almond in html files
if (options.config.almond === true && isArray(options.config.replaceRequireScript)) {
var $ = require('jQuery').create();
// iterate over all modules that are configured for replacement
options.config.replaceRequireScript.forEach(function (entry, idx) {
var files = grunt.file.expand(entry.files);
// log almond including
log.ok('Replacing require script calls, with almond module files');
// iterate over found html files
files.forEach(function (file, index) {
// load file contents
var contents = String(grunt.file.read(file, 'utf-8'));
// iterate over content nodes to find the correct script tags
$(contents).each(function (idx, elm) {
// check for require js like script tags
if (String(elm.tagName).toLowerCase() === 'script' && $(elm).attr('data-main') !== '') {
// replace the attributes of requires script tag
// with the 'almonded' version of the module
var $newElm = $(elm).clone(), newElm = $newElm[0].outerHTML;
var insertScript = _.isUndefined(entry.modulePath) !== true ? entry.modulePath : $newElm.attr('data-main');
contents = contents.replace($.trim(newElm.replace('<script', '').replace('></script>', '')), 'src="' + insertScript + '.js"');
}
});
// write out newly created file contents
grunt.file.write(file, contents, 'utf-8');
});
});
// check for callback, else mark as done
if (isFunction(options.cb)) {
options.cb();
} else {
options.done();
}
} else {
// check for callback, else mark as done
if (isFunction(options.cb)) {
options.cb();
} else {
options.done();
}
}
});
// helper to execute requirejs optimizer function
grunt.registerHelper('almond', function (options) {
// check if we should inline almond
if (options.config.almond === true) {
var npmDir = npm.dir,
almondPath = npmDir + '/' + 'grunt-requirejs/node_modules/almond/',
configClone = clone(options.config);
// fetch the almond main file
npm.load(JSON.parse(grunt.file.read(almondPath + 'package.json')), function (err, npmLocal) {
// log almond including
log.ok('Including almond.js');
// set almond path
configClone.paths.almond = String(almondPath + npmLocal.config.get('main')).replace('.js', '');
// modify modules data
configClone.modules.forEach(function (module, idx) {
// log adding of almond
grunt.verbose.ok('Adding almond to module: ' + module.name);
// check if the module has its own includes
// then append almond to them
// else generate a new includes property
if (isArray(module.include) === true) {
configClone.modules[idx].include.push('almond');
} else {
configClone.modules[idx].include = ['almond'];
}
// check for callback, else mark as done
if (isFunction(options.cb)) {
options.cb(configClone);
} else {
options.done();
}
});
});
} else {
// check for callback, else mark as done
if (isFunction(options.cb)) {
options.cb();
} else {
options.done();
}
}
});
// Output some size info about the generated module
grunt.registerHelper('require_size_info', function(module, optimized, filecontents) {
var gzipSize = grunt.helper('gzip', filecontents).length,
fileSize = filecontents.length,
message = 'Compressed size for module "' + module + '": ' + String(gzipSize).green + ' bytes gzipped (' + String(fileSize).green + ' bytes ' + (optimized !== false ? 'minified' : 'uncompressed') + ').';
// output info msg
grunt.log.writeln(message);
// return traced informations
return {gzipSize: gzipSize, module: module, fileSize: fileSize, message: message};
});
};