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0 parents commit 43be33b2bed482a46494861c74f7641f45619720 @chrisdew chrisdew committed Jan 4, 2012
202 COPYING
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+This is a fork of http://code.google.com/p/protobuf-for-node/
+
+My intention is just to package it up nicely for NPM and to fix some bugs.
+
+I also intend to make it work with the NodeJS 0.6.x series.
+
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+#include "protobuf_for_node.h"
+
+extern "C" void init(v8::Handle<v8::Object> target) {
+ target->Set(v8::String::New("Schema"), protobuf_for_node::SchemaConstructor());
+}
@@ -0,0 +1,8 @@
+
+e
+ feeds.protofeeds"O
+Feed
+title ( 
+entry ( 2.feeds.Feed.Entry
+Entry
+title (
@@ -0,0 +1,55 @@
+// Copyright 2010 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you
+// may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+var fs = require('fs');
+var puts = require('util').puts;
+
+// The "Schema" constructor lets you load a protocol schema definition
+// (a compiled .proto file).
+var Schema = require('protobuf_for_node').Schema;
+
+// "schema" contains all message types defined in feeds.proto|desc.
+var schema = new Schema(fs.readFileSync('example/feeds.desc'));
+// The "Feed" message.
+var Feed = schema['feeds.Feed'];
+
+// Serializes a JS object to a protocol message in a node buffer
+// according to the protocol message schema.
+var serialized = Feed.serialize({ title: 'Title', ignored: 42 });
+
+// Parses a protocol message in a node buffer into a JS object
+// according to the protocol message schema.
+var aFeed = Feed.parse(serialized);
+
+// The "ignored" field has been dropped.
+puts("Message after roundtrip: " + JSON.stringify(aFeed, null, 2));
+
+// Each protocol message type has its own prototype. You can attach
+// methods to parsed protocol messages.
+Feed.prototype.numEntries = function() {
+ return this.entry.length;
+};
+var aFeed = Feed.parse(Feed.serialize({ entry: [{}, {}] }));
+puts("Number of entries: " + aFeed.numEntries());
+
+// Performance is (only) on par with builtin JSON serialization.
+var t = Date.now();
+for (var i = 0; i < 100000; i++)
+ Feed.parse(Feed.serialize({ entry: [{}, {}] }));
+puts("Proto: " + (Date.now() - t)/100 + " us / object");
+
+var t = Date.now();
+for (var i = 0; i < 100000; i++)
+ JSON.parse(JSON.stringify({ entry: [{}, {}] }));
+puts("JSON: " + (Date.now() - t)/100 + " us / object");
@@ -0,0 +1,23 @@
+// Copyright 2010 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you
+// may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+package feeds;
+message Feed {
+ optional string title = 1;
+ message Entry {
+ optional string title = 1;
+ }
+ repeated Entry entry = 2;
+}
+
@@ -0,0 +1,91 @@
+// Copyright 2010 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you
+// may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License.
+
+#include <pwd.h>
+
+#include "../protobuf_for_node.h"
+#include "protoservice.pb.h"
+
+// Copy a struct passwd into a response message.
+void AddEntry(pwd::EntriesResponse* response, struct passwd* pwd) {
+ pwd::Entry* e = response->add_entry();
+ e->set_name(pwd->pw_name);
+ e->set_uid(pwd->pw_uid);
+ e->set_gid(pwd->pw_gid);
+ e->set_home(pwd->pw_dir);
+ e->set_shell(pwd->pw_shell);
+}
+
+// Now, for demonstrational purposes, let's pretend that getpwent is
+// asynchronous, i.e. calls callbacks with data. Besides returning
+// the password data, this demonstrates how to pass on call args as a
+// C-style "void* data".
+
+// Imaginary interface.
+void GetpwentAsync(
+ void (*cb)(struct passwd*, void*), // called for each entry
+ void (*done)(void*), // called when done
+ void* data) { // auxiliary payload
+ // Pretend for a moment this wasn't synchronous.
+ struct passwd* pwd;
+ while (pwd = getpwent()) cb(pwd, data);
+ setpwent();
+ done(data);
+}
+
+
+extern "C" void init(v8::Handle<v8::Object> target) {
+ // Look Ma - no V8 api required!
+
+ // Simple synchronous implementation.
+ protobuf_for_node::ExportService(
+ target, "sync",
+ new (class : public pwd::Pwd {
+ virtual void GetEntries(google::protobuf::RpcController*,
+ const pwd::EntriesRequest* request,
+ pwd::EntriesResponse* response,
+ google::protobuf::Closure* done) {
+ struct passwd* pwd;
+ while ((pwd = getpwent())) AddEntry(response, pwd);
+ setpwent();
+ done->Run();
+ }
+ }));
+
+ // Asynchronous implementation.
+ protobuf_for_node::ExportService(
+ target, "async",
+ new (class : public pwd::Pwd {
+ // This is equivalent to the service call signature.
+ typedef protobuf_for_node::ServiceCall<
+ const pwd::EntriesRequest, pwd::EntriesResponse> Call;
+
+ static void OnPasswd(struct passwd* pwd, void* data) {
+ AddEntry(Call::Cast(data)->response, pwd);
+ }
+
+ static void OnDone(void* data) {
+ delete Call::Cast(data); // call complete - invokes done callback
+ }
+
+ virtual void GetEntries(google::protobuf::RpcController*,
+ const pwd::EntriesRequest* request,
+ pwd::EntriesResponse* response,
+ google::protobuf::Closure* done) {
+ GetpwentAsync(OnPasswd,
+ OnDone,
+ new Call(request, response, done));
+ }
+ }));
+}
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