// Copyright (c) 2010 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 "base/base_paths.h"
#include "base/environment.h"
#include "base/file_path.h"
#include "base/path_service.h"
#include "base/scoped_ptr.h"
#include "base/utf_string_conversions.h"

const char kPythonPathEnv[] = "PYTHONPATH";

void AppendToPythonPath(const FilePath& dir) {
  scoped_ptr<base::Environment> env(base::Environment::Create());
  std::string old_path;
  std::string dir_path;
#if defined(OS_WIN)
  dir_path = WideToUTF8(dir.value());
#elif defined(OS_POSIX)
  dir_path = dir.value();
#endif
  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)
    new_path.append(";");
#elif defined(OS_POSIX)
    new_path.append(":");
#endif
    new_path.append(dir_path.c_str());
    env->SetVar(kPythonPathEnv, new_path);
  }
}

bool GetPythonRunTime(FilePath* dir) {
#if defined(OS_WIN)
  if (!PathService::Get(base::DIR_SOURCE_ROOT, dir))
    return false;
  *dir = FilePath(FILE_PATH_LITERAL("third_party"))
      .Append(FILE_PATH_LITERAL("python_24"))
      .Append(FILE_PATH_LITERAL("python.exe"));
#elif defined(OS_POSIX)
  *dir = FilePath("python");
#endif
  return true;
}