StdInputStream.h

Go to the documentation of this file.

#pragma once
 
#include "DataIO/Stream/IInputStream.h"
#include "DataIO/FileSystem/Path.h"
 
#include <utility>
#include <istream>
#include <memory>
#include <string>
 
namespace ph
{
 
class StdInputStream : public IInputStream
{
public:
    inline StdInputStream() = default;
    explicit StdInputStream(std::unique_ptr<std::istream> stream);
    StdInputStream(StdInputStream&& other) noexcept;
 
    void read(std::size_t numBytes, std::byte* out_bytes) override;
    void readString(std::string* out_string, char delimiter) override;
    void seekGet(std::size_t pos) override;
    std::optional<std::size_t> tellGet() override;
    operator bool () const override;
    std::size_t readSome(std::size_t numBytes, std::byte* out_bytes) override;
 
    std::istream* getStream() const;
 
    StdInputStream& operator = (StdInputStream&& rhs) noexcept;
 
protected:
    bool isStreamGoodForRead() const;
 
    void ensureStreamIsGoodForRead() const;
 
    std::string getReasonForError() const;
 
private:
    std::unique_ptr<std::istream> m_istream;
};
 
// In-header Implementations:
 
inline StdInputStream::StdInputStream(StdInputStream&& other) noexcept
{
    *this = std::move(other);
}
 
inline StdInputStream& StdInputStream::operator = (StdInputStream&& rhs) noexcept
{
    m_istream = std::move(rhs.m_istream);
    return *this;
}
 
inline StdInputStream::operator bool () const
{
    return isStreamGoodForRead();
}
 
inline std::istream* StdInputStream::getStream() const
{
    return m_istream.get();
}
 
inline bool StdInputStream::isStreamGoodForRead() const
{
    return m_istream != nullptr && m_istream->good();
}
 
}// end namespace ph