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require.js
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require.js
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(function() {
var baseUri = location.protocol + "//" + location.host;
var relativeUri = location.href.replace(/[^\/]*$/, '');
var moduleUri = relativeUri;
var moduleClosures = {};
var modules = {};
var loading = [];
var main;
window.require = function require(moduleId) {
loadModuleSync(moduleId);
return getModule(moduleId);
};
require.root = function(uri) {
if (!arguments.length) return moduleUri;
if (uri.slice(-1) != '/') uri += '/';
if (uri.charAt(0) == '/') moduleUri = baseUri + uri;
else if (uri.indexOf('://') == -1) moduleUri = relativeUri + uri;
else moduleUri = uri;
};
require.run = function(moduleId) {
if (moduleClosures.hasOwnProperty(moduleId)) return getModule(moduleId);
else loadModule(main = moduleId, '');
};
require.addModuleClosure = function(moduleId, closure) {
moduleClosures[moduleId] = closure;
};
function getModule(moduleId) {
if (modules.hasOwnProperty(moduleId)) return modules[moduleId];
else if (moduleClosures.hasOwnProperty(moduleId)) return runModule(moduleId);
else throw new Error('Module "' + moduleId + '" does not exist.');
}
function runModule(moduleId) {
var module = {
id: moduleId,
uri: moduleUri + moduleId + '.js',
exports: { extend: extend }
};
modules[moduleId] = module;
moduleClosures[moduleId](createRequire(moduleId), module.exports, module);
return module;
}
function createRequire(currentModuleId) {
var require = function(moduleId) {
moduleId = resolveModuleId(moduleId, currentModuleId);
return getModule(moduleId).exports;
};
if (main) require.main = getModule(main);
return require;
}
function loadModule(moduleId, currentModuleId) {
moduleId = resolveModuleId(moduleId, currentModuleId);
if (moduleClosures.hasOwnProperty(moduleId)) return;
var file = moduleUri + moduleId + '.js';
var xhr = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
xhr.open('GET', file, true);
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
var i = loading.indexOf(xhr);
if (i == -1) return;
loading.splice(i, 1);
if (xhr.status == 200) {
var code = xhr.responseText;
moduleClosures[moduleId] = new Function('require', 'exports', 'module', code);
findRequired(code, moduleId);
// if finished loading all dependencies start the run
if (!loading.length && main) require.run(main);
} else {
moduleError(moduleId, currentModuleId);
}
}
};
loading.push(xhr);
xhr.send(null);
}
function loadModuleSync(moduleId, currentModuleId) {
moduleId = resolveModuleId(moduleId, currentModuleId);
if (moduleClosures.hasOwnProperty(moduleId)) return;
var file = moduleUri + moduleId + '.js';
var xhr = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
xhr.open('GET', file, false);
xhr.send(null);
var code = xhr.responseText;
moduleClosures[moduleId] = new Function('require', 'exports', 'module', code);
findRequired(code, moduleId, true);
}
function findRequired(code, moduleId, sync) {
var match, requireRegex = /\brequire\(("|')(.+?)\1\)/g;
while (match = requireRegex.exec(code)) {
sync ? loadModuleSync(match[2], moduleId) : loadModule(match[2], moduleId);
}
}
function resolveModuleId(moduleId, currentModuleId) {
if (moduleId.charAt(0) == '.') {
var path = currentModuleId.split('/');
var parts = moduleId.split('/');
path.pop();
if (moduleId.slice(0, 3) == '../') {
while (parts[0] == '..') {
if (!path.length) moduleError(moduleId, currentModuleId);
parts.shift();
path.pop();
}
return (path.length ? path.join('/') + '/' : '') + parts.join('/');
} else if (moduleId.slice(0, 2) == './') {
parts.shift();
return path.join('/') + '/' + parts.join('/');
}
}
return moduleId;
}
function moduleError(moduleId, currentModuleId) {
var from = currentModuleId ? ' require()\'d from module "' + currentModuleId + '"' : '';
throw new Error('Could not load module "' + moduleId + '"' + from);
}
function extend(source) {
for (var i in source) {
if (source.hasOwnProperty(i)) {
this[i] = source[i];
}
}
return this;
}
function checkAutoRun() {
// call require.run automatically if declared in script tag
var scripts = document.getElementsByTagName('script');
var main;
for (var i = 0; i < scripts.length; i++) {
if (main = scripts[i].getAttribute('data-main')) {
if (scripts[i].hasAttribute('data-root')) {
require.root(scripts[i].getAttribute('data-root'));
} else {
var src = scripts[i].getAttribute('src');
require.root(src.replace(/[^\/]+$/, ''));
}
require.run(main);
}
}
}
checkAutoRun();
})();