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64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/files/file_path.h"
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#include "base/files/file_util.h"
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#include "base/strings/string_util.h"
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#include "base/strings/stringprintf.h"
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#include "mojo/public/cpp/bindings/lib/message_builder.h"
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#include "mojo/public/cpp/bindings/lib/message_internal.h"
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#include "mojo/public/cpp/bindings/message.h"
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// This file is used to generate various files corresponding to mojo
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// messages. The various binding implementations can parse these to verify they
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// correctly decode messages.
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//
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// The output consists of each byte of the message encoded in a hex string with
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// a newline after it.
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namespace mojo {
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namespace {
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std::string BinaryToHex(const base::StringPiece& piece) {
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std::string result("// File generated by mojo_message_generator.\n");;
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result.reserve(result.size() + (piece.size() * 5));
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for (size_t i = 0; i < piece.size(); ++i)
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base::StringAppendF(&result, "0X%.2X\n", static_cast<int>(piece.data()[i]));
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return result;
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}
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void WriteMessageToFile(const Message& message, const base::FilePath& path) {
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const std::string hex_message(BinaryToHex(
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base::StringPiece(reinterpret_cast<const char*>(message.data()),
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message.data_num_bytes())));
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CHECK_EQ(static_cast<int>(hex_message.size()),
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base::WriteFile(path, hex_message.data(),
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static_cast<int>(hex_message.size())));
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}
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// Generates a message of type MessageData. The message uses the name 21,
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// with 4 bytes of payload: 0x9, 0x8, 0x7, 0x6.
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void GenerateMessageDataMessage() {
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internal::MessageBuilder builder(static_cast<uint32_t>(21),
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static_cast<size_t>(4));
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char* data = static_cast<char*>(builder.buffer()->Allocate(4));
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DCHECK(data);
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data[0] = 9;
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data[1] = 8;
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data[2] = 7;
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data[3] = 6;
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Message message;
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builder.Finish(&message);
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WriteMessageToFile(message,
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base::FilePath(FILE_PATH_LITERAL("message_data")));
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}
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} // namespace
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} // namespace mojo
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int main(int argc, char** argv) {
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mojo::GenerateMessageDataMessage();
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return 0;
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}
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