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87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
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// Copyright (c) 2013 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/at_exit.h"
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#include "base/command_line.h"
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#include "base/strings/utf_string_conversions.h"
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#include "build/build_config.h"
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#include "tools/gn/commands.h"
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#include "tools/gn/err.h"
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#include "tools/gn/location.h"
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#include "tools/gn/standard_out.h"
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#include "tools/gn/switches.h"
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// Only the GN-generated build makes this header for now.
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// TODO(brettw) consider adding this if we need it in GYP.
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#if defined(GN_BUILD)
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#include "tools/gn/last_commit_position.h"
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#else
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#define LAST_COMMIT_POSITION "UNKNOWN"
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#endif
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namespace {
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std::vector<std::string> GetArgs(const base::CommandLine& cmdline) {
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base::CommandLine::StringVector in_args = cmdline.GetArgs();
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#if defined(OS_WIN)
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std::vector<std::string> out_args;
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for (const auto& arg : in_args)
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out_args.push_back(base::WideToUTF8(arg));
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return out_args;
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#else
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return in_args;
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#endif
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}
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} // namespace
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int main(int argc, char** argv) {
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base::AtExitManager at_exit;
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#if defined(OS_WIN)
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base::CommandLine::set_slash_is_not_a_switch();
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#endif
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base::CommandLine::Init(argc, argv);
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const base::CommandLine& cmdline = *base::CommandLine::ForCurrentProcess();
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std::vector<std::string> args = GetArgs(cmdline);
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std::string command;
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if (cmdline.HasSwitch("help") || cmdline.HasSwitch("h")) {
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// Make "-h" and "--help" default to help command.
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command = commands::kHelp;
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} else if (cmdline.HasSwitch(switches::kVersion)) {
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// Make "--version" print the version and exit.
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OutputString(std::string(LAST_COMMIT_POSITION) + "\n");
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exit(0);
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} else if (args.empty()) {
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// No command, print error and exit.
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Err(Location(), "No command specified.",
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"Most commonly you want \"gn gen <out_dir>\" to make a build dir.\n"
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"Or try \"gn help\" for more commands.").PrintToStdout();
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return 1;
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} else {
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command = args[0];
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args.erase(args.begin());
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}
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const commands::CommandInfoMap& command_map = commands::GetCommands();
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commands::CommandInfoMap::const_iterator found_command =
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command_map.find(command);
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int retval;
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if (found_command != command_map.end()) {
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retval = found_command->second.runner(args);
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} else {
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Err(Location(), "Command \"" + command + "\" unknown.").PrintToStdout();
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OutputString(
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"Available commands (type \"gn help <command>\" for more details):\n");
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for (const auto& cmd : commands::GetCommands())
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PrintShortHelp(cmd.second.help_short);
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retval = 1;
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}
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exit(retval); // Don't free memory, it can be really slow!
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}
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