Utf16String.hh

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/*
 * Copyright 2021 Assured Information Security, Inc.
 *
 * 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 <introvirt/util/json/json.hh>
 
#include <cstdint>
#include <memory>
#include <ostream>
#include <string>
#include <string_view>
 
namespace introvirt {
namespace windows {
 
class Utf16String {
  public:
    virtual uint16_t Length() const = 0;
 
    virtual const uint8_t* Buffer() const = 0;
 
    const std::string& utf8() const;
 
    const std::u16string& utf16() const;
 
    void set(const std::string& value);
 
    virtual void set(const std::u16string& value) = 0;
 
    operator const std::u16string&() const;
 
  public:
    bool operator==(const std::string&) const;
    bool operator==(const std::u16string&) const;
 
    bool operator<(const std::string&) const;
    bool operator<(const std::u16string&) const;
 
    bool equals(const std::string&) const;
    bool equals(const std::u16string&) const;
 
    bool iequals(const std::string&) const;
    bool iequals(const std::u16string&) const;
 
    bool starts_with(const std::string&) const;
    bool starts_with(const std::u16string&) const;
 
    bool istarts_with(const std::string&) const;
    bool istarts_with(const std::u16string&) const;
 
    bool ends_with(const std::string&) const;
    bool ends_with(const std::u16string&) const;
 
    bool iends_with(const std::string&) const;
    bool iends_with(const std::u16string&) const;
 
  public:
    Utf16String();
    virtual ~Utf16String();
 
    void write(std::ostream& os, const std::string& linePrefix = "") const;
    virtual Json::Value json() const;
 
    // Move semantics
    Utf16String(Utf16String&&) noexcept;
    Utf16String& operator=(Utf16String&&) noexcept;
 
    static const size_t npos;
 
  protected:
    void invalidate();
 
  public:
    static std::string convert(std::u16string_view src);
 
    static std::u16string convert(std::string_view src);
 
  private:
    class IMPL;
    std::unique_ptr<IMPL> pImpl;
};
 
const std::string& to_string(const Utf16String&);
std::ostream& operator<<(std::ostream& os, const Utf16String& str);
 
} /* namespace windows */
} /* namespace introvirt */