io.h

// Copyright (c) 2019 PaddlePaddle 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.

#pragma once

#include <sys/stat.h>
#include <fstream>
#include <string>
#include "lite/utils/cp_logging.h"
#include "lite/utils/string.h"

namespace paddle {
namespace lite {

static bool IsFileExists(const std::string& path) {
  std::ifstream file(path);
  bool res = file.is_open();
  if (res) {
    file.close();
  }
  return res;
}

// ARM mobile not support mkdir in C++
static void MkDirRecur(const std::string& path) {
#ifndef LITE_WITH_ARM
  if (system(string_format("mkdir -p %s", path.c_str()).c_str()) != 0) {
    LOG(ERROR) << "Cann't mkdir " << path;
  }
#else  // On ARM
  CHECK_NE(mkdir(path.c_str(), S_IRWXU), -1) << "Cann't mkdir " << path;
#endif
}

// read buffer from file
static std::string ReadFile(const std::string& filename) {
  std::ifstream ifile(filename.c_str());
  std::ostringstream buf;
  char ch;
  while (buf && ifile.get(ch)) buf.put(ch);
  return buf.str();
}

}  // namespace lite
}  // namespace paddle