develop/AStrongByteBufferInputStream_8h_source.html

#pragma once


#include "ISeekableInputStream.h"

#include "AUI/Common/AByteBuffer.h"

#include "AUI/Url/AUrl.h"


class API_AUI_CORE AStrongByteBufferInputStream: public ISeekableInputStream {

private:

    std::variant<AByteBuffer, _<AByteBuffer>> mRef;

    size_t mReadPos = 0;


public:

    static _<AStrongByteBufferInputStream> fromUrl(const AUrl& url);


    explicit AStrongByteBufferInputStream(AByteBuffer buffer) noexcept: mRef(std::move(buffer)) {


    }


    explicit AStrongByteBufferInputStream(_<AByteBuffer> buffer) noexcept: mRef(std::move(buffer)) {


    }

    ~AStrongByteBufferInputStream() override = default;


    bool isEof() override;


    void seek(std::streamoff offset, ASeekDir seekDir) override;


    [[nodiscard]] std::streampos tell() noexcept override;


    size_t read(char* dst, size_t size) override;


    [[nodiscard]]

    AByteBuffer& buffer() noexcept {

        return std::visit(aui::lambda_overloaded {

            [](AByteBuffer& b) -> AByteBuffer& {

                return b;

            },

            [](_<AByteBuffer>& b) -> AByteBuffer& {

                return *b;

            },

        }, mRef);

    }

};


AByteBuffer
std::vector-like growing array for byte storage.
Definition AByteBuffer.h:31

AStrongByteBufferInputStream::read
size_t read(char *dst, size_t size) override
Reads up to size bytes from stream. Blocking (waiting for new data) is allowed.

AStrongByteBufferInputStream::tell
std::streampos tell() noexcept override
return current reading position

AStrongByteBufferInputStream::seek
void seek(std::streamoff offset, ASeekDir seekDir) override
change reading position, a way of changing depends on seekDir parameter

AStrongByteBufferInputStream::isEof
bool isEof() override
returns true if end of stream has been reached

AUrl
Uniform Resource Locator implementation.
Definition AUrl.h:31

ISeekableInputStream
Represents an input stream with updating reading position.
Definition ISeekableInputStream.h:27

_
An std::weak_ptr with AUI extensions.
Definition SharedPtrTypes.h:179

aui::lambda_overloaded
Definition callables.h:36