objj-runtime/Objective-J/Bootstrap.js

JavaScript (ECMAScript) and Objective-J runtime

/*
 * Bootstrap.js
 * Objective-J
 *
 * Created by Francisco Tolmasky.
 * Copyright 2010, 280 North, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */


#ifdef COMMONJS
#ifdef NODEJS
var mainBundleURL = new CFURL("file:" + process.cwd()).asDirectoryPathURL();
#else
var mainBundleURL = new CFURL("file:" + require("file").cwd()).asDirectoryPathURL();
#endif
#elif defined(BROWSER)
// This is automatic when importing, but we'd like these important URLs to
// be taken into consideration in the cache as well.
enableCFURLCaching();

// To determine where our application lives, start with the current URL of the page.
var pageURL = new CFURL(window.location.href),

// Look for any <base> tags and choose the last one (which is the one that will take effect).
    DOMBaseElements = document.getElementsByTagName("base"),
    DOMBaseElementsCount = DOMBaseElements.length;

if (DOMBaseElementsCount > 0)
{
    var DOMBaseElement = DOMBaseElements[DOMBaseElementsCount - 1],
        DOMBaseElementHref = DOMBaseElement && DOMBaseElement.getAttribute("href");

    // If we have one, use it instead.
    if (DOMBaseElementHref)
        pageURL = new CFURL(DOMBaseElementHref, pageURL);
}

// Set compiler flags

if (typeof OBJJ_COMPILER_FLAGS !== 'undefined')
{
    var flags = {};
    for (var i = 0; i < OBJJ_COMPILER_FLAGS.length; i++)
    {
        switch (OBJJ_COMPILER_FLAGS[i])
        {
            case "IncludeDebugSymbols":
                flags.includeMethodFunctionNames = true;
                break;

            case "IncludeTypeSignatures":
                flags.includeIvarTypeSignatures = true;
                flags.includeMethodArgumentTypeSignatures = true;
                break;

            case "InlineMsgSend":
                flags.inlineMsgSendFunctions = true;
                break;

            case "SourceMap":
                flags.sourceMap = true;
                break;
        }
    }
    FileExecutable.setCurrentCompilerFlags(flags);
}

// Turn the main file into a URL.
var mainFileURL = new CFURL(window.OBJJ_MAIN_FILE || "main.j"),

// The main bundle is the containing folder of the main file.
    mainBundleURL = new CFURL(".", new CFURL(mainFileURL, pageURL)).absoluteURL(),

// We assume the "first part" of the path is completely resolved.
    assumedResolvedURL = new CFURL("..", mainBundleURL).absoluteURL();

// .. doesn't work if we're already at root, so "go back" one more level to the scheme and authority.
if (mainBundleURL === assumedResolvedURL)
    assumedResolvedURL = new CFURL(assumedResolvedURL.schemeAndAuthority());

StaticResource.resourceAtURL(assumedResolvedURL, YES);

exports.pageURL = pageURL;

exports.bootstrap = function()
{
    resolveMainBundleURL();
}

function resolveMainBundleURL()
{
    StaticResource.resolveResourceAtURL(mainBundleURL, YES, function(/*StaticResource*/ aResource)
    {
        var includeURLs = StaticResource.includeURLs(),
            index = 0,
            count = includeURLs.length;

        for (; index < count; ++index)
            aResource.resourceAtURL(includeURLs[index], YES);

        Executable.fileImporterForURL(mainBundleURL)(mainFileURL.lastPathComponent(), YES, function()
        {
            disableCFURLCaching();
            afterDocumentLoad(function()
            {
                var hashString = window.location.hash.substring(1),
                    args = [];

                if (hashString.length)
                {
                    args = hashString.split("/");
                    for (var i = 0, count = args.length; i < count; i++)
                        args[i] = decodeURIComponent(args[i]);
                }

                var namedArgsArray = window.location.search.substring(1).split("&"),
                    namedArgs = new CFMutableDictionary();

                for (var i = 0, count = namedArgsArray.length; i < count; i++)
                {
                    var thisArg = namedArgsArray[i].split("=");

                    if (!thisArg[0])
                        continue;

                    if (thisArg[1] == null)
                        thisArg[1] = true;

                    namedArgs.setValueForKey(decodeURIComponent(thisArg[0]), decodeURIComponent(thisArg[1]));
                }

                main(args, namedArgs);
            });
        });
    });
}

var documentLoaded = NO;

function afterDocumentLoad(/*Function*/ aFunction)
{
    if (documentLoaded || document.readyState === "complete")
        return aFunction();

    if (window.addEventListener)
        window.addEventListener("load", aFunction, NO);

    else if (window.attachEvent)
        window.attachEvent("onload", aFunction);
}

afterDocumentLoad(function()
{
    documentLoaded = YES;
});

if (typeof OBJJ_AUTO_BOOTSTRAP === "undefined" || OBJJ_AUTO_BOOTSTRAP)
    exports.bootstrap();

#endif

function makeAbsoluteURL(/*CFURL|String*/ aURL)
{
    if (aURL instanceof CFURL && aURL.scheme())
        return aURL;

    return new CFURL(aURL, mainBundleURL);
}

GLOBAL(objj_importFile) = Executable.fileImporterForURL(mainBundleURL);
GLOBAL(objj_executeFile) = Executable.fileExecuterForURL(mainBundleURL);

GLOBAL(objj_import) = function()
{
    CPLog.warn("objj_import is deprecated, use objj_importFile instead");
    objj_importFile.apply(this, arguments);
};