ace/support/requireJS-node.js

147 строки
4.2 KiB
JavaScript

var path = require("path");
var fs = require("fs");
var currentModule, defaultCompile = module.constructor.prototype._compile;
module.constructor.prototype._compile = function(content, filename){
currentModule = this;
try{
return defaultCompile.call(this, content, filename);
}
finally {
currentModule = null;
}
};
var requireModule = module;
global.define = function (id, injects, factory) {
if (currentModule == null) {
throw new Error("define() may only be called during module factory instantiation");
}
var module = currentModule;
var req = function(relativeId, callback) {
if (Array.isArray(relativeId)) {
// async require
return callback.apply(this, relativeId.map(req))
}
var chunks = relativeId.split("!");
if (chunks.length >= 2) {
var prefix = chunks[0];
relativeId = chunks.slice(1).join("!")
}
if (relativeId.charAt(0) === '.') {
var rootPath = path.dirname(path.dirname(requireModule.filename)) + "/",
absolutePath = path.dirname(module.filename) + "/" + relativeId;
relativeId = "../" + absolutePath.match(new RegExp(rootPath + "(.*)"))[1];
}
if (prefix == "text") {
return fs.readFileSync(findModulePath(relativeId))
} else
return require(relativeId);
};
if (!factory) {
// two or less arguments
factory = injects;
if (factory) {
// two args
if (typeof id === "string") {
if (id !== module.id) {
throw new Error("Can not assign module to a different id than the current file");
}
// default injects
injects = [];
}
else{
// anonymous, deps included
injects = id;
}
}
else {
// only one arg, just the factory
factory = id;
injects = [];
}
}
injects.unshift("require", "exports", "module");
id = module.id;
if (typeof factory !== "function"){
// we can just provide a plain object
return module.exports = factory;
}
var returned = factory.apply(module.exports, injects.map(function (injection) {
switch (injection) {
// check for CommonJS injection variables
case "require": return req;
case "exports": return module.exports;
case "module": return module;
default:
// a module dependency
return req(injection);
}
}));
if(returned){
// since AMD encapsulates a function/callback, it can allow the factory to return the exports.
module.exports = returned;
}
};
// slighly modified version of
// https://github.com/ry/node/blob/1dad95a3a960c645ffec28f9ec023dad6a17c0d4/src/node.js#L159
//
// given a module name, and a list of paths to test, returns the first
// matching file in the following precedence.
//
// require("a.<ext>")
// -> a.<ext>
//
// require("a")
// -> a
// -> a.<ext>
// -> a/index.<ext>
function findModulePath(request) {
var fs = require('fs'),
exts = ["js"],
paths = ['.'].concat(require.paths)
paths = request.charAt(0) === '/' ? [''] : paths;
// check if the file exists and is not a directory
var tryFile = function(requestPath) {
try {
var stats = fs.statSync(requestPath);
if (stats && !stats.isDirectory()) {
return requestPath;
}
} catch (e) {}
return false;
};
// given a path check a the file exists with any of the set extensions
var tryExtensions = function(p, extension) {
for (var i = 0, EL = exts.length; i < EL; i++) {
f = tryFile(p + exts[i]);
if (f) { return f; }
}
return false;
};
// For each path
for (var i = 0, PL = paths.length; i < PL; i++) {
var p = paths[i],
// try to join the request to the path
f = tryFile(path.join(p, request)) ||
// try it with each of the extensions
tryExtensions(path.join(p, request)) ||
// try it with each of the extensions at "index"
tryExtensions(path.join(p, request, 'index'));
if (f) { return f; }
}
return false;
}