michael@0: /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: // see http://mxr.mozilla.org/mozilla-central/source/services/sync/Weave.js#76
michael@0: 
michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: 
michael@0: const rph = Services.io.getProtocolHandler("resource").QueryInterface(Ci.nsIResProtocolHandler);
michael@0: 
michael@0: function endsWith(str, end) {
michael@0:   return str.slice(-end.length) == end;
michael@0: }
michael@0: 
michael@0: function jar_entries(jarReader, pattern) {
michael@0:   var entries = [];
michael@0:   var enumerator = jarReader.findEntries(pattern);
michael@0:   while (enumerator.hasMore()) {
michael@0:     entries.push(enumerator.getNext());
michael@0:   }
michael@0:   return entries;
michael@0: }
michael@0: 
michael@0: function dir_entries(baseDir, subpath, ext) {
michael@0:   var dir = baseDir.clone();
michael@0:   dir.append(subpath);
michael@0:   var enumerator = dir.directoryEntries;
michael@0:   var entries = [];
michael@0:   while (enumerator.hasMoreElements()) {
michael@0:     var file = enumerator.getNext().QueryInterface(Ci.nsIFile);
michael@0:     if (file.isDirectory()) {
michael@0:       entries = entries.concat(dir_entries(dir, file.leafName, ext).map(function(p) subpath + "/" + p));
michael@0:     } else if (endsWith(file.leafName, ext)) {
michael@0:       entries.push(subpath + "/" + file.leafName);
michael@0:     }
michael@0:   }
michael@0:   return entries;
michael@0: }
michael@0: 
michael@0: function get_modules_under(uri) {
michael@0:   if (uri instanceof Ci.nsIJARURI) {
michael@0:     var jar = uri.QueryInterface(Ci.nsIJARURI);
michael@0:     var jarReader = Cc["@mozilla.org/libjar/zip-reader;1"].createInstance(Ci.nsIZipReader);
michael@0:     var file = jar.JARFile.QueryInterface(Ci.nsIFileURL);
michael@0:     jarReader.open(file.file);
michael@0:     var entries = jar_entries(jarReader, "components/*.js")
michael@0:                   .concat(jar_entries(jarReader, "modules/*.js"))
michael@0:                   .concat(jar_entries(jarReader, "modules/*.jsm"));
michael@0:     jarReader.close();
michael@0:     return entries;
michael@0:   } else if (uri instanceof Ci.nsIFileURL){
michael@0:     var file = uri.QueryInterface(Ci.nsIFileURL);
michael@0:     return dir_entries(file.file, "components", ".js")
michael@0:            .concat(dir_entries(file.file, "modules", ".js"))
michael@0:            .concat(dir_entries(file.file, "modules", ".jsm"));
michael@0:   } else {
michael@0:     throw "Expected a nsIJARURI or nsIFileURL";
michael@0:   }
michael@0: }
michael@0: 
michael@0: function load_modules_under(spec, uri) {
michael@0:   var entries = get_modules_under(uri).sort();
michael@0:   // The precompilation of JS here sometimes reports errors, which we don't
michael@0:   // really care about. But if the errors are ever reported to xpcshell's
michael@0:   // error reporter, it will cause it to return an error code, which will break
michael@0:   // automation. Currently they won't be, because the component loader spins up
michael@0:   // its JSContext before xpcshell has time to set its context callback (which
michael@0:   // overrides the error reporter on all newly-created JSContexts). But as we
michael@0:   // move towards a singled-cxed browser, we'll run into this. So let's be
michael@0:   // forward-thinking and deal with it now.
michael@0:   ignoreReportedErrors(true);
michael@0:   for each (let entry in entries) {
michael@0:     try {
michael@0:       dump(spec + entry + "\n");
michael@0:       Cu.import(spec + entry, null);
michael@0:     } catch(e) {}
michael@0:   }
michael@0:   ignoreReportedErrors(false);
michael@0: }
michael@0: 
michael@0: function resolveResource(spec) {
michael@0:   var uri = Services.io.newURI(spec, null, null);
michael@0:   return Services.io.newURI(rph.resolveURI(uri), null, null);
michael@0: }
michael@0: 
michael@0: function precompile_startupcache(uri) {
michael@0:   load_modules_under(uri, resolveResource(uri));
michael@0: }