tools/gn/gn_main.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/at_exit.h"
   6 #include "base/command_line.h"
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "tools/gn/commands.h"
   9 #include "tools/gn/err.h"
  10 #include "tools/gn/location.h"
  11
  12 namespace {
  13
  14 std::vector<std::string> GetArgs(const CommandLine& cmdline) {
  15   CommandLine::StringVector in_args = cmdline.GetArgs();
  16 #if defined(OS_WIN)
  17   std::vector<std::string> out_args;
  18   for (size_t i = 0; i < in_args.size(); i++)
  19     out_args.push_back(base::WideToUTF8(in_args[i]));
  20   return out_args;
  21 #else
  22   return in_args;
  23 #endif
  24 }
  25
  26 }  // namespace
  27
  28 int main(int argc, char** argv) {
  29   base::AtExitManager at_exit;
  30 #if defined(OS_WIN)
  31   CommandLine::set_slash_is_not_a_switch();
  32 #endif
  33   CommandLine::Init(argc, argv);
  34
  35   const CommandLine& cmdline = *CommandLine::ForCurrentProcess();
  36   std::vector<std::string> args = GetArgs(cmdline);
  37
  38   std::string command;
  39   if (cmdline.HasSwitch("help")) {
  40     // Make "--help" default to help command.
  41     command = commands::kHelp;
  42   } else if (args.empty()) {
  43     command = commands::kGen;
  44   } else {
  45     command = args[0];
  46     args.erase(args.begin());
  47   }
  48
  49   const commands::CommandInfoMap& command_map = commands::GetCommands();
  50   commands::CommandInfoMap::const_iterator found_command =
  51       command_map.find(command);
  52
  53   int retval;
  54   if (found_command != command_map.end()) {
  55     retval = found_command->second.runner(args);
  56   } else {
  57     Err(Location(),
  58         "Command \"" + command + "\" unknown.").PrintToStdout();
  59     commands::RunHelp(std::vector<std::string>());
  60     retval = 1;
  61   }
  62
  63   exit(retval);  // Don't free memory, it can be really slow!
  64   return retval;
  65 }