mirror of https://github.com/libAthena/athena.git
490 lines
10 KiB
C++
490 lines
10 KiB
C++
// This file is part of libAthena.
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//
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// libAthena is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// libAthena is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with libAthena. If not, see <http://www.gnu.org/licenses/>
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#include "Athena/BinaryReader.hpp"
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#include "Athena/IOException.hpp"
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#include "Athena/FileNotFoundException.hpp"
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#include "Athena/InvalidDataException.hpp"
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#include "Athena/InvalidOperationException.hpp"
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#include "utf8.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <vector>
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#include <iostream>
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#include <cstring>
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#ifdef HW_RVL
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#include <malloc.h>
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#endif // HW_RVL
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namespace Athena
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{
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namespace io
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{
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BinaryReader::BinaryReader(const atUint8* data, atUint64 length)
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: m_length(length),
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m_position(0),
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m_bitPosition(0),
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m_endian(Endian::LittleEndian),
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m_progressCallback(nullptr)
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{
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if (!data)
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THROW_INVALID_DATA_EXCEPTION("data cannot be NULL");
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if (length == 0)
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THROW_INVALID_OPERATION_EXCEPTION("length cannot be 0");
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m_data = new atUint8[m_length];
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memcpy(m_data, data, m_length);
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}
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BinaryReader::BinaryReader(const std::string& filename, std::function<void(int)> progFun)
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: m_data(NULL),
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m_length(0),
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m_filepath(filename),
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m_position(0),
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m_bitPosition(0),
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m_endian(Endian::LittleEndian),
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m_progressCallback(progFun)
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{
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loadData();
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}
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BinaryReader::~BinaryReader()
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{
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delete[] m_data;
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m_data = NULL;
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}
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void BinaryReader::setEndian(Endian endian)
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{
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m_endian = endian;
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}
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Endian BinaryReader::endian() const
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{
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return m_endian;
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}
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bool BinaryReader::isBigEndian() const
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{
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return (m_endian == Endian::BigEndian);
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}
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bool BinaryReader::isLittleEndian() const
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{
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return (m_endian == Endian::LittleEndian);
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}
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bool BinaryReader::isOpen() const
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{
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return m_data != nullptr;
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}
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void BinaryReader::seek(atInt64 position, SeekOrigin origin)
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{
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switch (origin)
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{
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case SeekOrigin::Begin:
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if ((position < 0 || (atInt64)position > (atInt64)m_length))
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", position);
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m_position = position;
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break;
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case SeekOrigin::Current:
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if ((((atInt64)m_position + position) < 0 || (m_position + position) > m_length))
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", position);
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m_position += position;
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break;
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case SeekOrigin::End:
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if ((((atInt64)m_length - position < 0) || (m_length - position) > m_length))
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", position);
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m_position = m_length - position;
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break;
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}
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}
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bool BinaryReader::atEnd() const
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{
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return m_position >= m_length;
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}
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atUint64 BinaryReader::position() const
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{
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return m_position;
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}
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atUint64 BinaryReader::length() const
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{
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return m_length;
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}
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void BinaryReader::setData(const atUint8* data, atUint64 length)
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{
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if (m_data)
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delete[] m_data;
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m_data = (atUint8*)data;
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m_length = length;
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m_position = 0;
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m_bitPosition = 0;
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}
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atUint8* BinaryReader::data() const
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{
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atUint8* ret = new atUint8[m_length];
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memset(ret, 0, m_length);
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memcpy(ret, m_data, m_length);
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return ret;
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}
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void BinaryReader::setFilepath(const std::string& filepath)
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{
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m_filepath = filepath;
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}
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std::string BinaryReader::filepath() const
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{
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return m_filepath;
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}
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void BinaryReader::seekBit(int bit)
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{
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if (!m_data)
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loadData();
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if (bit < 0 || bit > 7)
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THROW_INVALID_OPERATION_EXCEPTION("bit out of range %i %s", bit, (bit < 0 ? "< 0" : "> 7"));
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m_bitPosition = bit;
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}
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bool BinaryReader::readBit()
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{
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if (!m_data)
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loadData();
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if (m_position > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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bool ret = (*(atUint8*)(m_data + m_position) & (1 << m_bitPosition)) != 0;
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m_bitPosition++;
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if (m_bitPosition > 7)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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return ret;
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}
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atInt8 BinaryReader::readByte()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + 1 > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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return *(atInt8*)(m_data + m_position++);
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}
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atUint8 BinaryReader::readUByte()
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{
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if (!m_data)
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loadData();
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + 1 > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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return *(atUint8*)(m_data + m_position++);
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}
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atInt8* BinaryReader::readBytes(atInt64 length)
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{
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return (atInt8*)readUBytes(length);
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}
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atUint8* BinaryReader::readUBytes(atInt64 length)
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + length > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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atUint8* ret;
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ret = new atUint8[length];
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memcpy(ret, (const atUint8*)(m_data + m_position), length);
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m_position += length;
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return ret;
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}
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atInt16 BinaryReader::readInt16()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + sizeof(atInt16) > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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atInt16 ret = *(atInt16*)(m_data + m_position);
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m_position += sizeof(atInt16);
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if (isBigEndian())
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utility::BigInt16(ret);
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else
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utility::LittleInt16(ret);
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return ret;
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}
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atUint16 BinaryReader::readUint16()
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{
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return readInt16();
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}
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atInt32 BinaryReader::readInt32()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + sizeof(atInt32) > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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atInt32 ret = *(atInt32*)(m_data + m_position);
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m_position += 4;
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if (isBigEndian())
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utility::BigInt32(ret);
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else
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utility::LittleInt32(ret);
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return ret;
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}
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atUint32 BinaryReader::readUint32()
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{
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return readInt32();
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}
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atInt64 BinaryReader::readInt64()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + sizeof(atInt64) > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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atInt64 ret = *(atInt64*)(m_data + m_position);
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m_position += 8;
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if (isBigEndian())
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utility::BigInt64(ret);
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else
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utility::LittleInt64(ret);
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return ret;
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}
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atUint64 BinaryReader::readUint64()
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{
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return readInt64();
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}
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float BinaryReader::readFloat()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + sizeof(float) > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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float ret = *(float*)(m_data + m_position);
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m_position += 4;
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if (isBigEndian())
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utility::BigFloat(ret);
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else
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utility::LittleFloat(ret);
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return ret;
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}
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double BinaryReader::readDouble()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + sizeof(double) > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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double ret = *(double*)(m_data + m_position);
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m_position += 8;
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if (isBigEndian())
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utility::BigDouble(ret);
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else
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utility::LittleDouble(ret);
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return ret;
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}
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bool BinaryReader::readBool()
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{
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if (!m_data)
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loadData();
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if (m_bitPosition > 0)
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{
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m_bitPosition = 0;
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m_position += sizeof(atUint8);
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}
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if (m_position + sizeof(bool) > m_length)
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THROW_IO_EXCEPTION("Position %0.16X outside stream bounds ", m_position);
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bool ret = *(bool*)(m_data + m_position);
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m_position += 1;
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return ret;
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}
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std::string BinaryReader::readUnicode()
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{
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if (!m_data)
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loadData();
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std::string ret;
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std::vector<short> tmp;
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atUint16 chr = readUint16();
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for(;;)
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{
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if (!chr)
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break;
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tmp.push_back(chr);
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chr = readUint16();
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}
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utf8::utf16to8(tmp.begin(), tmp.end(), back_inserter(ret));
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return ret;
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}
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std::string BinaryReader::readString()
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{
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std::string ret = "";
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atUint8 chr = readByte();
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while (chr != 0)
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{
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ret += chr;
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chr = readByte();
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}
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return ret;
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}
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void BinaryReader::setProgressCallback(std::function<void (int)> cb)
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{
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m_progressCallback = cb;
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}
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void BinaryReader::loadData()
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{
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FILE* in;
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atUint64 length;
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in = fopen(m_filepath.c_str(), "rb");
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if (!in)
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THROW_FILE_NOT_FOUND_EXCEPTION(m_filepath);
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rewind(in);
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length = utility::fileSize(m_filepath);
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#ifdef HW_RVL
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m_data = (Uint8*)memalign(32, length);
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#else
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m_data = new atUint8[length];
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#endif
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atUint64 done = 0;
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atUint64 blocksize = BLOCKSZ;
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do
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{
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if (blocksize > length - done)
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blocksize = length - done;
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atInt64 ret = fread(m_data + done, 1, blocksize, in);
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if (ret < 0)
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THROW_IO_EXCEPTION("Error reading data from disk");
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else if (ret == 0)
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break;
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done += ret;
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if (m_progressCallback)
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m_progressCallback((int)((float)(done* 100.f)/length));
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} while (done < length);
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fclose(in);
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m_length = length;
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m_position = 0;
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m_bitPosition = 0;
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}
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}
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}
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