Made it possible to require() a script from another package. It's high time for some code reuse.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3191 ed5197a5-7fde-0310-b194-c3ffbd925b24

core/core.js

@@ -215,6 +215,11 @@ function getManifest(fileName) {
 	return manifest.length ? JSON.parse(manifest.join("\n")) : null;
 }
 
+function packageNameToPath(name) {
+	var process = this;
+	return "packages/" + process.packageOwner + "/" + name + "/";
+}
+
 function getProcess(packageOwner, packageName, key, options) {
 	var process = gProcesses[key];
 	if (!process
@@ -342,6 +347,11 @@ function getProcess(packageOwner, packageName, key, options) {
 					throw new Error(packageOwner + " does not have right to permission 'network'.");
 				}
 			}
+			if (manifest && manifest.require) {
+				print("manifest.require = ", manifest.require);
+				print(manifest.require.map(packageNameToPath.bind(process)));
+				process.task.addPath(manifest.require.map(packageNameToPath.bind(process)));
+			}
 			process.task.setImports(imports);
 			print("Activating task");
 			process.task.activate();

src/Task.cpp

@@ -182,6 +182,11 @@ void Task::activate() {
 
 	v8::Local<v8::Context> context = v8::Context::New(_isolate, 0, global);
 	_context = v8::Persistent<v8::Context, v8::CopyablePersistentTraits<v8::Context> >(_isolate, context);
+
+	v8::Context::Scope contextScope(v8::Local<v8::Context>::New(_isolate, _context));
+
+	v8::Local<v8::Object> exportObject = v8::Object::New(_isolate);
+	_exportObject = v8::Persistent<v8::Object, v8::CopyablePersistentTraits<v8::Object> >(_isolate, exportObject);
 }
 
 void Task::activate(const v8::FunctionCallbackInfo<v8::Value>& args) {
@@ -270,6 +275,16 @@ bool Task::execute(const char* fileName) {
 	if (!_scriptName.size()) {
 		_scriptName = fileName;
 	}
+	if (!_path.size()) {
+		std::string path = _scriptName;
+		size_t position = path.rfind('/');
+		if (position != std::string::npos) {
+			path.resize(position + 1);
+		} else {
+			path = ".";
+		}
+		_path.push_back(path);
+	}
 	if (!source.IsEmpty()) {
 		v8::Handle<v8::Script> script = v8::Script::Compile(source, name);
 		if (!script.IsEmpty()) {
@@ -645,6 +660,23 @@ void Task::onReceivePacket(int packetType, const char* begin, size_t length, voi
 			to->_trusted = trusted;
 		}
 		break;
+	case kAddPath:
+		{
+			v8::Handle<v8::Array> result = v8::Handle<v8::Array>::Cast(Serialize::load(to, from, std::vector<char>(begin, begin + length)));
+			if (!result.IsEmpty()) {
+				for (size_t i = 0; i < result->Length(); ++i) {
+					v8::Handle<v8::Value> handle = result->Get(i);
+					if (!handle.IsEmpty()) {
+						v8::Handle<v8::String> entry = handle.As<v8::String>();
+						if (!entry.IsEmpty()) {
+							v8::String::Utf8Value value(entry);
+							to->_path.push_back(*value);
+						}
+					}
+				}
+			}
+		}
+		break;
 	case kActivate:
 		to->activate();
 		break;
@@ -692,10 +724,9 @@ void Task::configureFromStdin() {
 
 std::string Task::resolveRequire(const std::string& require) {
 	std::string result;
-	std::string path = _scriptName;
-	size_t position = path.rfind('/');
-	if (position != std::string::npos) {
-		path.resize(position + 1);
+
+	for (size_t i = 0; i < _path.size(); ++i) {
+		std::string& path = _path[i];
 		std::cout << "Looking in " << path << " for " << require << "\n";
 		if (require.find("..") == std::string::npos && require.find('/') == std::string::npos) {
 			result = path + require;

src/Task.h

@@ -31,6 +31,7 @@ enum MessageType {
 	kReleaseExport,
 	kReleaseImport,
 	kSetTrusted,
+	kAddPath,
 	kActivate,
 	kExecute,
 	kKill,
@@ -95,6 +96,7 @@ private:
 	taskid_t _nextTask = 1;
 	static const taskid_t kParentId = 0;
 	std::map<taskid_t, TaskStub*> _children;
+	std::vector<std::string> _path;
 
 	typedef std::map<std::string, v8::Persistent<v8::Object, v8::CopyablePersistentTraits<v8::Object> > > ScriptExportMap;
 	ScriptExportMap _scriptExports;

src/TaskStub.cpp

@@ -91,6 +91,7 @@ void TaskStub::create(const v8::FunctionCallbackInfo<v8::Value>& args) {
 	taskTemplate->Set(v8::String::NewFromUtf8(args.GetIsolate(), "execute"), v8::FunctionTemplate::New(args.GetIsolate(), TaskStub::execute, data));
 	taskTemplate->Set(v8::String::NewFromUtf8(args.GetIsolate(), "kill"), v8::FunctionTemplate::New(args.GetIsolate(), TaskStub::kill, data));
 	taskTemplate->Set(v8::String::NewFromUtf8(args.GetIsolate(), "statistics"), v8::FunctionTemplate::New(args.GetIsolate(), TaskStub::statistics, data));
+	taskTemplate->Set(v8::String::NewFromUtf8(args.GetIsolate(), "addPath"), v8::FunctionTemplate::New(args.GetIsolate(), addPath, data));
 	taskTemplate->SetInternalFieldCount(1);
 
 	v8::Handle<v8::Object> taskObject = taskTemplate->NewInstance();
@@ -195,6 +196,14 @@ void TaskStub::setImports(const v8::FunctionCallbackInfo<v8::Value>& args) {
 	}
 }
 
+void TaskStub::addPath(const v8::FunctionCallbackInfo<v8::Value>& args) {
+	if (TaskStub* stub = TaskStub::get(args.Data())) {
+		std::vector<char> buffer;
+		Serialize::store(Task::get(args.GetIsolate()), buffer, args[0]);
+		stub->_stream.send(kAddPath, &*buffer.begin(), buffer.size());
+	}
+}
+
 void TaskStub::getOnExit(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& args) {
 	TaskTryCatch tryCatch(TaskStub::get(args.Data())->_owner);
 	v8::HandleScope scope(args.GetIsolate());

src/TaskStub.h

@@ -47,6 +47,8 @@ private:
 	static void getExports(const v8::FunctionCallbackInfo<v8::Value>& args);
 	static void setImports(const v8::FunctionCallbackInfo<v8::Value>& args);
 
+	static void addPath(const v8::FunctionCallbackInfo<v8::Value>& args);
+
 	static void getOnExit(v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& args);
 	static void setOnExit(v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& args);