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#pragma once
/* SPDX-License-Identifier: Unlicense
*/
#include "common.h"
#include <cstddef>
#include <cstdint>
#include <cstdio>
struct DataView {
const uint8_t *const buffer{};
const size_t size{};
};
struct DataBuffer {
DataBuffer(){};
DataBuffer(const DataBuffer&) = delete;
constexpr DataBuffer(DataBuffer&& other)
: buffer(other.buffer)
, buffer_size(other.buffer_size)
, occupied_size(other.occupied_size)
{
other.occupied_size = 0;
other.buffer_size = 0;
other.buffer = nullptr;
};
static constexpr size_t kInitialSize = 4 * 1024;
uint8_t *buffer{new uint8_t[kInitialSize]};
size_t buffer_size{kInitialSize};
size_t occupied_size{};
void Expand(size_t new_size);
constexpr auto View(size_t offset = 0, size_t size = SIZE_MAX) const
{
if (offset >= occupied_size) {
return DataView{};
}
return DataView{buffer + offset, Min(occupied_size - offset, size)};
};
~DataBuffer();
static DataBuffer FromStream(FILE *stream);
};
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