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// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <stdexcept>
#include "common/common_types.h"
#include "common/stream.h"
namespace Common {
Stream::Stream() = default;
Stream::~Stream() = default;
void Stream::Seek(s32 offset, SeekOrigin origin) {
if (origin == SeekOrigin::SetOrigin) {
if (offset < 0) {
position = 0;
} else if (position >= buffer.size()) {
position = buffer.size();
} else {
position = offset;
}
} else if (origin == SeekOrigin::FromCurrentPos) {
Seek(static_cast<s32>(position) + offset, SeekOrigin::SetOrigin);
} else if (origin == SeekOrigin::FromEnd) {
Seek(static_cast<s32>(buffer.size()) - offset, SeekOrigin::SetOrigin);
}
}
u8 Stream::ReadByte() {
if (position < buffer.size()) {
return buffer[position++];
} else {
throw std::out_of_range("Attempting to read a byte not within the buffer range");
}
}
void Stream::WriteByte(u8 byte) {
if (position == buffer.size()) {
buffer.push_back(byte);
position++;
} else {
buffer.insert(buffer.begin() + position, byte);
}
}
} // namespace Common
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