blob: 6e19ea5e38e4212aba22a880cbf196a16aa84fcf [file] [log] [blame]
// Copyright (c) 2011 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 "net/test/python_utils.h"
#include <memory>
#include "base/base_paths.h"
#include "base/command_line.h"
#include "base/environment.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/process/launch.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#if defined(OS_MACOSX)
#include "base/mac/foundation_util.h"
const char kPythonPathEnv[] = "PYTHONPATH";
void AppendToPythonPath(const base::FilePath& dir) {
std::unique_ptr<base::Environment> env(base::Environment::Create());
std::string old_path;
std::string dir_path;
#if defined(OS_WIN)
dir_path = base::WideToUTF8(dir.value());
#elif defined(OS_POSIX)
dir_path = dir.value();
if (!env->GetVar(kPythonPathEnv, &old_path)) {
env->SetVar(kPythonPathEnv, dir_path.c_str());
} else if (old_path.find(dir_path) == std::string::npos) {
std::string new_path(old_path);
#if defined(OS_WIN)
#elif defined(OS_POSIX)
env->SetVar(kPythonPathEnv, new_path);
bool GetPyProtoPath(base::FilePath* dir) {
// Locate the Python code generated by the protocol buffers compiler.
base::FilePath generated_code_dir;
if (!PathService::Get(base::DIR_EXE, &generated_code_dir)) {
LOG(ERROR) << "Can't find " << generated_code_dir.value();
return false;
#if defined(OS_MACOSX)
if (base::mac::AmIBundled())
generated_code_dir = generated_code_dir.DirName().DirName().DirName();
// Used for GYP. TODO(jam): remove after GN conversion.
const base::FilePath kPyProto(FILE_PATH_LITERAL("pyproto"));
if (base::DirectoryExists(generated_code_dir.Append(kPyProto))) {
*dir = generated_code_dir.Append(kPyProto);
return true;
// Used for GN.
const base::FilePath kGen(FILE_PATH_LITERAL("gen"));
if (base::DirectoryExists(generated_code_dir.Append(kGen))) {
*dir = generated_code_dir.Append(kGen);
return true;
return false;
#if defined(OS_WIN)
struct PythonExePath {
PythonExePath() {
// This is test-only code, so CHECK with a subprocess invocation is ok.
base::CommandLine command(base::FilePath(FILE_PATH_LITERAL("cmd")));
command.AppendArg("import sys; print sys.executable");
std::string output;
CHECK(GetAppOutput(command, &output));
// This does only work if cmd.exe doesn't use a non-US codepage.
path_ = base::ASCIIToUTF16(output);
TrimWhitespace(path_, base::TRIM_ALL, &path_);
base::string16 path_;
static base::LazyInstance<PythonExePath>::Leaky g_python_path;
bool GetPythonCommand(base::CommandLine* python_cmd) {
#if defined(OS_WIN)
// Most developers have depot_tools in their path, which only has a
// python.bat, not a python.exe. Go through cmd to find the path to
// the python executable.
// (Don't just return a a "cmd /c python" command line, because then tests
// that try to kill the python process will kill the cmd process instead,
// which can cause flakiness.)
// Launch python in unbuffered mode, so that python output doesn't mix with
// gtest output in buildbot log files. See
// Prevent using system-installed libraries. Use hermetic versioned copies.
return true;