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/***************************************************************************
* Copyright (C) 2005-2019 by the FIFE team *
* http://www.fifengine.net *
* This file is part of FIFE. *
* *
* FIFE is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
// Standard C++ library includes
#include <algorithm>
#include <vector>
#include <string>
// 3rd party library includes
// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "util/base/exception.h"
#include "util/log/logger.h"
#include "rawdata.h"
namespace FIFE {
static Logger _log(LM_VFS);
RawData::RawData(RawDataSource* datasource) : m_datasource(datasource), m_index_current(0) {
}
RawData::~RawData() {
delete m_datasource;
}
std::vector<uint8_t> RawData::getDataInBytes() {
// get the total file size
uint32_t size = getDataLength();
// create output vector
std::vector<uint8_t> target;
// resize vector to file size
target.resize(size);
// read bytes directly into vector
readInto(&target[0], target.size());
return target;
}
std::vector<std::string> RawData::getDataInLines() {
std::vector<std::string> target;
std::string line;
while (getLine(line)) {
target.push_back(line);
}
return target;
}
uint32_t RawData::getDataLength() const {
return m_datasource->getSize();
}
uint32_t RawData::getCurrentIndex() const {
return m_index_current;
}
void RawData::setIndex(uint32_t index) {
if (index > getDataLength())
throw IndexOverflow(__FUNCTION__);
m_index_current = index;
}
void RawData::moveIndex(int32_t offset) {
setIndex(getCurrentIndex() + offset);
}
void RawData::readInto(uint8_t* buffer, size_t len) {
if (m_index_current + len > getDataLength()) {
FL_LOG(_log, LMsg("RawData") << m_index_current << " : " << len << " : " << getDataLength());
throw IndexOverflow(__FUNCTION__);
}
m_datasource->readInto(buffer, m_index_current, len);
m_index_current += len;
}
uint8_t RawData::read8() {
return readSingle<uint8_t>();
}
uint16_t RawData::read16Little() {
uint16_t val = readSingle<uint16_t>();
return littleToHost(val);
}
uint32_t RawData::read32Little() {
uint32_t val = readSingle<uint32_t>();
return littleToHost(val);
}
uint16_t RawData::read16Big() {
uint16_t val = readSingle<uint16_t>();
return bigToHost(val);
}
uint32_t RawData::read32Big() {
uint32_t val = readSingle<uint32_t>();
return bigToHost(val);
}
std::string RawData::readString(size_t len) {
std::vector<uint8_t> strVector;
strVector.resize(len);
readInto(&strVector[0], len);
std::string ret(strVector.begin(), strVector.end());
return ret;
}
void RawData::read(std::string& outbuffer, int32_t size) {
if ((size < 0) || ((size + m_index_current) > getDataLength())) {
size = getDataLength() - m_index_current;
}
if (size == 0) {
outbuffer = "";
return;
}
outbuffer.resize(size);
// read directly into string
readInto(reinterpret_cast<uint8_t*>(&outbuffer[0]), size);
}
bool RawData::getLine(std::string& buffer) {
if (getCurrentIndex() >= getDataLength())
return false;
buffer = "";
char c;
while (getCurrentIndex() < getDataLength() && (c = read8()) != '\n')
buffer += c;
return true;
}
bool RawData::littleEndian() {
static int32_t endian = 2;
if (endian == 2) {
uint32_t value = 0x01;
endian = reinterpret_cast<uint8_t*>(&value)[0];
FL_LOG(_log, LMsg("RawData") << "we are on a " << (endian == 1 ? "little endian" : "big endian") << " machine");
}
return endian == 1;
}
}//FIFE
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