initial version with updated build system

src/node_request.cpp

@@ -0,0 +1,148 @@
+#include "node_request.hpp"
+#include "node_file_source.hpp"
+#include <mbgl/storage/default/request.hpp>
+#include <mbgl/storage/response.hpp>
+
+#include <cmath>
+
+namespace node_mbgl {
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+// Static Node Methods
+
+v8::Persistent<v8::FunctionTemplate> NodeRequest::constructorTemplate;
+
+void NodeRequest::Init(v8::Handle<v8::Object> target) {
+    NanScope();
+
+    v8::Local<v8::FunctionTemplate> t = NanNew<v8::FunctionTemplate>(New);
+
+    t->InstanceTemplate()->SetInternalFieldCount(1);
+    t->SetClassName(NanNew("Request"));
+
+    NODE_SET_PROTOTYPE_METHOD(t, "respond", Respond);
+
+    NanAssignPersistent(constructorTemplate, t);
+
+    target->Set(NanNew("Request"), t->GetFunction());
+}
+
+NAN_METHOD(NodeRequest::New) {
+    NanScope();
+
+    // Extract the pointer from the first argument
+    if (args.Length() < 2 || !NanHasInstance(NodeFileSource::constructorTemplate, args[0]) || !args[1]->IsExternal()) {
+        return NanThrowTypeError("Cannot create Request objects explicitly");
+    }
+
+    auto source = v8::Persistent<v8::Object>::New(args[0]->ToObject());
+    auto request = reinterpret_cast<mbgl::Request *>(args[1].As<v8::External>()->Value());
+    auto req = new NodeRequest(source, request);
+    req->Wrap(args.This());
+
+    NanReturnValue(args.This());
+}
+
+// TODO: retain the NodeFileSource in a permanent handle!
+
+v8::Handle<v8::Object> NodeRequest::Create(v8::Handle<v8::Object> source, mbgl::Request *request) {
+    NanScope();
+    v8::Local<v8::Value> argv[] = { v8::Local<v8::Object>::New(source), NanNew<v8::External>(request) };
+    auto instance = constructorTemplate->GetFunction()->NewInstance(2, argv);
+
+    instance->Set(NanNew("url"), NanNew(request->resource.url), v8::ReadOnly);
+    instance->Set(NanNew("kind"), NanNew<v8::Integer>(int(request->resource.kind)), v8::ReadOnly);
+
+    NanReturnValue(instance);
+}
+
+NAN_METHOD(NodeRequest::Respond) {
+    NanScope();
+
+    auto nodeRequest = ObjectWrap::Unwrap<NodeRequest>(args.Holder());
+    if (!nodeRequest->request) {
+        return NanThrowError("Request has already been responded to, or was canceled.");
+    }
+
+    auto source = ObjectWrap::Unwrap<NodeFileSource>(nodeRequest->source);
+
+    auto request = nodeRequest->request;
+    nodeRequest->request = nullptr;
+
+    if (args.Length() < 1) {
+        return NanThrowTypeError("First argument must be an error object");
+    } else if (args[0]->BooleanValue()) {
+        auto response = std::make_shared<mbgl::Response>();
+
+        response->status = mbgl::Response::Error;
+
+        // Store the error string.
+        const NanUtf8String message { args[0]->ToString() };
+        response->message = std::string { *message, size_t(message.length()) };
+
+        source->notify(request, response);
+    } else if (args.Length() < 2 || !args[1]->IsObject()) {
+        return NanThrowTypeError("Second argument must be a response object");
+    } else {
+        auto response = std::make_shared<mbgl::Response>();
+        auto res = args[1]->ToObject();
+
+        response->status = mbgl::Response::Successful;
+
+        if (res->Has(NanNew("modified"))) {
+            const double modified = res->Get(NanNew("modified"))->ToNumber()->Value();
+            if (!std::isnan(modified)) {
+                response->modified = modified / 1000; // JS timestamps are milliseconds
+            }
+        }
+
+        if (res->Has(NanNew("expires"))) {
+            const double expires = res->Get(NanNew("expires"))->ToNumber()->Value();
+            if (!std::isnan(expires)) {
+                response->expires = expires / 1000; // JS timestamps are milliseconds
+            }
+        }
+
+        if (res->Has(NanNew("etag"))) {
+            auto etagHandle = res->Get(NanNew("etag"));
+            if (etagHandle->BooleanValue()) {
+                const NanUtf8String etag { etagHandle->ToString() };
+                response->etag = std::string { *etag, size_t(etag.length()) };
+            }
+        }
+
+        if (res->Has(NanNew("data"))) {
+            auto dataHandle = res->Get(NanNew("data"));
+            if (node::Buffer::HasInstance(dataHandle)) {
+                response->data = std::string {
+                    node::Buffer::Data(dataHandle),
+                    node::Buffer::Length(dataHandle)
+                };
+            } else {
+                return NanThrowTypeError("Response data must be a Buffer");
+            }
+        }
+
+        // Send the response object to the NodeFileSource object
+        source->notify(request, response);
+    }
+
+    NanReturnUndefined();
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+// Instance
+
+NodeRequest::NodeRequest(v8::Persistent<v8::Object> source_, mbgl::Request *request_)
+    : source(source_), request(request_) {
+}
+
+NodeRequest::~NodeRequest() {
+    source.Dispose();
+}
+
+void NodeRequest::cancel() {
+    request = nullptr;
+}
+
+}