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/*
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>, the SerenityOS developers
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/Endian.h>
#include <AK/Types.h>
#include <string.h>
namespace Gfx {
class Streamer {
public:
constexpr Streamer(const u8* data, size_t size)
: m_data_ptr(data)
, m_size_remaining(size)
{
}
template<typename T>
constexpr bool read(T& value)
{
Array<u8, sizeof(T)> network_buffer {};
auto network_value = new (network_buffer.data()) AK::NetworkOrdered<T> {};
auto res = read_bytes(network_buffer.data(), sizeof(T));
value = T(*network_value);
return res;
}
constexpr bool read_bytes(u8* buffer, size_t count)
{
if (m_size_remaining < count) {
return false;
}
memcpy(buffer, m_data_ptr, count);
m_data_ptr += count;
m_size_remaining -= count;
return true;
}
constexpr bool at_end() const { return !m_size_remaining; }
constexpr void step_back()
{
m_data_ptr -= 1;
m_size_remaining += 1;
}
private:
const u8* m_data_ptr { nullptr };
size_t m_size_remaining { 0 };
};
}
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