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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <fstream>
#include <iostream>
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
// Usage: just run in the directory where you want your test source root to be.
int files_written = 0;
int targets_written = 0;
base::FilePath UTF8ToFilePath(const std::string& s) {
#if defined(OS_WIN)
return base::FilePath(base::UTF8ToWide(s));
#else
return base::FilePath(s);
#endif
}
std::string FilePathToUTF8(const base::FilePath& path) {
#if defined(OS_WIN)
return base::WideToUTF8(path.value());
#else
return path.value();
#endif
}
base::FilePath RepoPathToPathName(const std::vector<int>& repo_path) {
base::FilePath ret;
for (size_t i = 0; i < repo_path.size(); i++) {
ret = ret.Append(UTF8ToFilePath(base::IntToString(repo_path[i])));
}
return ret;
}
std::string TargetIndexToLetter(int target_index) {
char ret[2];
ret[0] = 'a' + target_index;
ret[1] = 0;
return ret;
}
std::string RepoPathToTargetName(const std::vector<int>& repo_path,
int target_index) {
std::string ret;
for (size_t i = 0; i < repo_path.size(); i++) {
if (i != 0)
ret.push_back('_');
ret.append(base::IntToString(repo_path[i]));
}
ret += TargetIndexToLetter(target_index);
return ret;
}
std::string RepoPathToFullTargetName(const std::vector<int>& repo_path,
int target_index) {
std::string ret;
for (size_t i = 0; i < repo_path.size(); i++) {
ret.push_back('/');
ret.append(base::IntToString(repo_path[i]));
}
ret += ":" + RepoPathToTargetName(repo_path, target_index);
return ret;
}
void WriteLevel(const std::vector<int>& repo_path,
int spread,
int max_depth,
int targets_per_level,
int files_per_target) {
base::FilePath dirname = RepoPathToPathName(repo_path);
base::FilePath filename = dirname.AppendASCII("BUILD.gn");
std::cout << "Writing " << FilePathToUTF8(filename) << "\n";
// Don't keep the file open while recursing.
{
base::CreateDirectory(dirname);
std::ofstream file;
file.open(FilePathToUTF8(filename).c_str(),
std::ios_base::out | std::ios_base::binary);
files_written++;
for (int i = 0; i < targets_per_level; i++) {
targets_written++;
file << "executable(\"" << RepoPathToTargetName(repo_path, i)
<< "\") {\n";
file << " sources = [\n";
for (int f = 0; f < files_per_target; f++)
file << " \"" << base::IntToString(f) << ".cc\",\n";
if (repo_path.size() < (size_t)max_depth) {
file << " ]\n";
file << " deps = [\n";
for (int d = 0; d < spread; d++) {
std::vector<int> cur = repo_path;
cur.push_back(d);
for (int t = 0; t < targets_per_level; t++)
file << " \"" << RepoPathToFullTargetName(cur, t) << "\",\n";
}
}
file << " ]\n}\n\n";
}
}
if (repo_path.size() < (size_t)max_depth) {
// Recursively generate subdirs.
for (int i = 0; i < spread; i++) {
std::vector<int> cur = repo_path;
cur.push_back(i);
WriteLevel(cur, spread, max_depth, targets_per_level, files_per_target);
}
}
}
int main() {
WriteLevel(std::vector<int>(), 5, 4, 3, 50); // 781 files, 2343 targets
//WriteLevel(std::vector<int>(), 6, 4, 2, 50);
std::cout << "Wrote " << files_written << " files and "
<< targets_written << " targets.\n";
return 0;
}
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