130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
// 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 <fstream>
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#include <iostream>
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#include "base/file_util.h"
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#include "base/files/file_path.h"
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#include "base/strings/string_number_conversions.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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// Usage: just run in the directory where you want your test source root to be.
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int files_written = 0;
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int targets_written = 0;
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base::FilePath UTF8ToFilePath(const std::string& s) {
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#if defined(OS_WIN)
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return base::FilePath(UTF8ToWide(s));
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#else
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return base::FilePath(s);
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#endif
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}
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std::string FilePathToUTF8(const base::FilePath& path) {
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#if defined(OS_WIN)
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return WideToUTF8(path.value());
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#else
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return path.value();
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#endif
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}
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base::FilePath RepoPathToPathName(const std::vector<int>& repo_path) {
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base::FilePath ret;
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for (size_t i = 0; i < repo_path.size(); i++) {
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ret = ret.Append(UTF8ToFilePath(base::IntToString(repo_path[i])));
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}
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return ret;
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}
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std::string TargetIndexToLetter(int target_index) {
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char ret[2];
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ret[0] = 'a' + target_index;
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ret[1] = 0;
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return ret;
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}
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std::string RepoPathToTargetName(const std::vector<int>& repo_path,
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int target_index) {
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std::string ret;
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for (size_t i = 0; i < repo_path.size(); i++) {
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if (i != 0)
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ret.push_back('_');
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ret.append(base::IntToString(repo_path[i]));
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}
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ret += TargetIndexToLetter(target_index);
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return ret;
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}
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std::string RepoPathToFullTargetName(const std::vector<int>& repo_path,
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int target_index) {
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std::string ret;
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for (size_t i = 0; i < repo_path.size(); i++) {
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ret.push_back('/');
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ret.append(base::IntToString(repo_path[i]));
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}
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ret += ":" + RepoPathToTargetName(repo_path, target_index);
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return ret;
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}
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void WriteLevel(const std::vector<int>& repo_path,
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int spread,
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int max_depth,
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int targets_per_level,
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int files_per_target) {
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base::FilePath dirname = RepoPathToPathName(repo_path);
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base::FilePath filename = dirname.AppendASCII("BUILD.gn");
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std::cout << "Writing " << FilePathToUTF8(filename) << "\n";
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// Don't keep the file open while recursing.
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{
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file_util::CreateDirectory(dirname);
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std::ofstream file;
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file.open(FilePathToUTF8(filename).c_str(),
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std::ios_base::out | std::ios_base::binary);
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files_written++;
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for (int i = 0; i < targets_per_level; i++) {
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targets_written++;
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file << "executable(\"" << RepoPathToTargetName(repo_path, i)
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<< "\") {\n";
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file << " sources = [\n";
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for (int f = 0; f < files_per_target; f++)
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file << " \"" << base::IntToString(f) << ".cc\",\n";
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if (repo_path.size() < (size_t)max_depth) {
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file << " ]\n";
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file << " deps = [\n";
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for (int d = 0; d < spread; d++) {
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std::vector<int> cur = repo_path;
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cur.push_back(d);
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for (int t = 0; t < targets_per_level; t++)
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file << " \"" << RepoPathToFullTargetName(cur, t) << "\",\n";
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}
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}
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file << " ]\n}\n\n";
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}
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}
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if (repo_path.size() < (size_t)max_depth) {
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// Recursively generate subdirs.
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for (int i = 0; i < spread; i++) {
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std::vector<int> cur = repo_path;
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cur.push_back(i);
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WriteLevel(cur, spread, max_depth, targets_per_level, files_per_target);
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}
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}
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}
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int main() {
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WriteLevel(std::vector<int>(), 5, 4, 3, 50); // 781 files, 2343 targets
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//WriteLevel(std::vector<int>(), 6, 4, 2, 50);
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std::cout << "Wrote " << files_written << " files and "
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<< targets_written << " targets.\n";
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return 0;
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}
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