/*
 * Copyright 2024 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 <ostream>

#include "support/string.h"

namespace wasm::String {

std::ostream& printEscaped(std::ostream& os, std::string_view str) {
  os << '"';
  for (unsigned char c : str) {
    switch (c) {
      case '\t':
        os << "\\t";
        break;
      case '\n':
        os << "\\n";
        break;
      case '\r':
        os << "\\r";
        break;
      case '"':
        os << "\\\"";
        break;
      case '\'':
        os << "\\'";
        break;
      case '\\':
        os << "\\\\";
        break;
      default: {
        if (c >= 32 && c < 127) {
          os << c;
        } else {
          os << std::hex << '\\' << (c / 16) << (c % 16) << std::dec;
        }
      }
    }
  }
  return os << '"';
}

} // namespace wasm::String