Starting on the Protocol Buffers tutorial

protobuf/.gitignore

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+/bin/protoc
+/include/
+/lib/
+/tmp/

protobuf/setup

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+#!/bin/bash
+
+set -e
+set -x
+
+TOP=$PWD
+mkdir -p tmp
+pushd tmp
+test -f protobuf-2.4.1.tar.bz2 || curl -O http://protobuf.googlecode.com/files/protobuf-2.4.1.tar.bz2
+test -d protobuf-2.4.1 || tar xjvf protobuf-2.4.1.tar.bz2
+pushd protobuf-2.4.1
+./configure --prefix=$TOP
+make
+make install

protobuf/src/tutorial/addressbook.proto

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+package tutorial;
+
+message Person {
+    required string name = 1;
+    required int32 id = 2;
+    optional string email = 3;
+
+    enum PhoneType {
+        MOBILE = 0;
+        HOME = 1;
+        WORK = 2;
+    }
+
+    message PhoneNumber {
+        required string number = 1;
+        optional PhoneType type = 2 [default = HOME];
+    }
+
+    repeated PhoneNumber phone = 4;
+}
+
+message AddressBook {
+    repeated Person person = 1;
+}