blob: ebdd219936dcb71f8ee439768f16439c2a8c5dfc [file] [log] [blame]
// Copyright 2017 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tools/launcher/python_launcher.h"
#include <string>
#include <vector>
#include "src/main/native/windows/process.h"
#include "src/tools/launcher/util/launcher_util.h"
namespace bazel {
namespace launcher {
using std::vector;
using std::wstring;
static constexpr const char* PYTHON_BIN_PATH = "python_bin_path";
static constexpr const char* USE_ZIP_FILE = "use_zip_file";
ExitCode PythonBinaryLauncher::Launch() {
wstring python_binary = this->GetLaunchInfoByKey(PYTHON_BIN_PATH);
// There are three kinds of values for `python_binary`:
// 1. An absolute path to a system interpreter. This is the case if
// `--python_path` is set by the
// user, or if a `py_runtime` is used that has `interpreter_path` set.
// 2. A runfile path to an in-workspace interpreter. This is the case if a
// `py_runtime` is used that has `interpreter` set.
// 3. The special constant, "python". This is the default case if neither of
// the above apply. Rlocation resolves runfiles paths to absolute paths, and
// if given an absolute path it leaves it alone, so it's suitable for cases 1
// and 2.
if (GetBinaryPathWithoutExtension(python_binary) != L"python") {
// Rlocation returns the original path if python_binary is an absolute path.
python_binary = this->Rlocation(python_binary, true);
}
// If specified python binary path doesn't exist, then fall back to
// python.exe and hope it's in PATH.
if (!DoesFilePathExist(python_binary.c_str())) {
python_binary = L"python.exe";
}
vector<wstring> args = this->GetCommandlineArguments();
wstring use_zip_file = this->GetLaunchInfoByKey(USE_ZIP_FILE);
wstring python_file;
// In case the given binary path is a shortened Windows 8dot3 path, we need to
// convert it back to its long path form before using it to find the python
// file.
wstring full_binary_path = GetWindowsLongPath(executable_file_);
if (use_zip_file == L"1") {
python_file = GetBinaryPathWithoutExtension(full_binary_path) + L".zip";
} else {
python_file = GetBinaryPathWithoutExtension(full_binary_path);
}
// Replace the first argument with python file path
args[0] = python_file;
for (int i = 1; i < args.size(); i++) {
args[i] = bazel::windows::WindowsEscapeArg(args[i]);
}
return this->LaunchProcess(python_binary, args);
}
} // namespace launcher
} // namespace bazel