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replace.js
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replace.js
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/*
* grunt-requirejs
* https://github.com/asciidisco/grunt-requirejs
*
* Copyright (c) 2012 Sebastian Golasch, contributors
* Licensed under the MIT license.
*/
exports.init = function(grunt) {
'use strict';
// External libs.
var Q = require('q');
var cheerio = require('cheerio');
var util = grunt.util;
return function(config) {
var deferred = Q.defer();
// exit early if we're not replacing scripts
if(!(config.replaceRequireScript instanceof Array) || !config.replaceRequireScript.length) {
return config;
}
// iterate over all modules that are configured for replacement
config.replaceRequireScript.forEach(function (file, idx) {
var files = grunt.file.expand(file.files);
var filesEvaluated = 0;
var filesToEvaluate = files.length;
var modulePath = file.modulePath;
// iterate over found html files
files.forEach(function (file) {
// load file contents
var contents = String(grunt.file.read(file, 'utf-8'));
// reference to script regex https://github.com/jquery/jquery/blob/1.7.2/src/ajax.js#L14
var script_re = /<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,
matches = contents.match(script_re);
if(util._.isNull(matches)){
// decrement the amount of files we needed to evaluated
// since one has nothing for us.
filesToEvaluate--;
} else {
[].slice.call(matches).forEach(function(match, i){
var $ = cheerio.load(match),
elm = $('script');
if (elm.attr('data-main')){
var insertScript = (modulePath || elm.attr('data-main'));
elm.attr('src', insertScript + '.js');
elm.removeAttr('data-main');
// replace i'th occurrence in content
var j = 0;
contents = contents.replace(script_re, function(match){
j++;
return (j-1 === i) ? $.html() : match;
});
}
});
grunt.log.writeln('Updating requirejs script tag for file', file);
grunt.file.write(file, contents);
// increment the amount of files successfully evaluated.
filesEvaluated++;
}
if (filesEvaluated >= filesToEvaluate) {
// only resolve after all files have been evaluated
deferred.resolve(config);
}
});
});
return deferred.promise;
};
};