/*

 * Copyright 2016 WebAssembly Community Group participants

 *

 * 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 "wabt/filenames.h"

namespace wabt {

const char* kWasmExtension = ".wasm";

const char* kWatExtension = ".wat";

std::string_view StripExtension(std::string_view filename) {

  return filename.substr(0, filename.find_last_of('.'));

}

std::string_view GetBasename(std::string_view filename) {

  size_t last_slash = filename.find_last_of('/');

  size_t last_backslash = filename.find_last_of('\\');

  if (last_slash == std::string_view::npos &&

      last_backslash == std::string_view::npos) {

    return filename;

  }

  if (last_slash == std::string_view::npos) {

    if (last_backslash == std::string_view::npos) {

      return filename;

    }

    last_slash = last_backslash;

  } else if (last_backslash != std::string_view::npos) {

    last_slash = std::max(last_slash, last_backslash);

  }

  return filename.substr(last_slash + 1);

}

std::string_view GetExtension(std::string_view filename) {

  size_t pos = filename.find_last_of('.');

  if (pos == std::string_view::npos) {

    return "";

  }

  return filename.substr(pos);

}

}  // namespace wabt