- Renamed /lib subfolders to lowercase

lib/filesystem/CBinaryReader.cpp

@@ -0,0 +1,108 @@
+#include "StdInc.h"
+#include "CBinaryReader.h"
+#include <SDL_endian.h>
+#include "CInputStream.h"
+
+
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+template <typename CData>
+CData readLE(CData data)
+{
+	auto dataPtr = (char*)&data;
+	std::reverse(dataPtr, dataPtr + sizeof(data));
+	return data;
+}
+
+#else
+
+template <typename CData>
+CData readLE(CData data)
+{
+	return data;
+}
+#endif
+
+CBinaryReader::CBinaryReader() : stream(nullptr)
+{
+
+}
+
+CBinaryReader::CBinaryReader(CInputStream * stream) : stream(stream)
+{
+
+}
+
+CInputStream * CBinaryReader::getStream()
+{
+	return stream;
+}
+
+void CBinaryReader::setStream(CInputStream * stream)
+{
+	this->stream = stream;
+}
+
+si64 CBinaryReader::read(ui8 * data, si64 size)
+{
+	return stream->read(data, size);
+}
+
+template <typename CData>
+CData CBinaryReader::readInteger()
+{
+	CData val;
+	si64 b = stream->read(reinterpret_cast<unsigned char *>(&val), sizeof(val));
+	if(b < sizeof(val))
+	{
+		throw std::runtime_error(getEndOfStreamExceptionMsg(sizeof(val)));
+	}
+
+	return readLE(val);
+}
+
+//FIXME: any way to do this without macro?
+#define INSTANTIATE(datatype, methodname) \
+datatype CBinaryReader::methodname() \
+{ return readInteger<datatype>(); }
+
+// While it is certanly possible to leave only template method
+// but typing template parameter every time can be annoying
+// and templates parameters can't be resolved by return type
+INSTANTIATE(ui8, readUInt8)
+INSTANTIATE(si8, readInt8)
+INSTANTIATE(ui16, readUInt16)
+INSTANTIATE(si16, readInt16)
+INSTANTIATE(ui32, readUInt32)
+INSTANTIATE(si32, readInt32)
+INSTANTIATE(ui64, readUInt64)
+INSTANTIATE(si64, readInt64)
+
+#undef INSTANTIATE
+
+std::string CBinaryReader::readString()
+{
+    int len = readUInt32();
+	assert(len >= 0 && len <= 500000); //not too long
+    std::string ret;
+    ret.reserve(len);
+    for(int gg = 0; gg < len; ++gg)
+	{
+        ret += readInt8();
+	}
+	return ret;
+}
+
+void CBinaryReader::skip(int count)
+{
+	stream->skip(count);
+}
+
+
+std::string CBinaryReader::getEndOfStreamExceptionMsg(long bytesToRead) const
+{
+	std::stringstream ss;
+	ss << "The end of the stream was reached unexpectedly. The stream has a length of " << stream->getSize() << " and the current reading position is "
+				<< stream->tell() << ". The client wanted to read " << bytesToRead << " bytes.";
+
+	return ss.str();
+}