1 files changed, 127 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/CLimitReadFile.cpp b/libraries/irrlicht-1.8/source/Irrlicht/CLimitReadFile.cpp
new file mode 100644
index 0000000..51afaad
--- /dev/null
+++ b/libraries/irrlicht-1.8/source/Irrlicht/CLimitReadFile.cpp
@@ -0,0 +1,127 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+#include "CLimitReadFile.h"
+#include "irrString.h"
+namespace irr
+{
+namespace io
+{
+CLimitReadFile::CLimitReadFile(IReadFile* alreadyOpenedFile, long pos,
+                long areaSize, const io::path& name)
+        : Filename(name), AreaStart(0), AreaEnd(0), Pos(0),
+        File(alreadyOpenedFile)
+{
+        #ifdef _DEBUG
+        setDebugName("CLimitReadFile");
+        #endif
+        if (File)
+        {
+                File->grab();
+                AreaStart = pos;
+                AreaEnd = AreaStart + areaSize;
+        }
+}
+CLimitReadFile::~CLimitReadFile()
+{
+        if (File)
+                File->drop();
+}
+//! returns how much was read
+s32 CLimitReadFile::read(void* buffer, u32 sizeToRead)
+{
+#if 1
+        if (0 == File)
+                return 0;
+        s32 r = AreaStart + Pos;
+        s32 toRead = core::s32_min(AreaEnd, r + sizeToRead) - core::s32_max(AreaStart, r);
+        if (toRead < 0)
+                return 0;
+        File->seek(r);
+        r = File->read(buffer, toRead);
+        Pos += r;
+        return r;
+#else
+        const long pos = File->getPos();
+        if (pos >= AreaEnd)
+                return 0;
+        if (pos + (long)sizeToRead >= AreaEnd)
+                sizeToRead = AreaEnd - pos;
+        return File->read(buffer, sizeToRead);
+#endif
+}
+//! changes position in file, returns true if successful
+bool CLimitReadFile::seek(long finalPos, bool relativeMovement)
+{
+#if 1
+        Pos = core::s32_clamp(finalPos + (relativeMovement ? Pos : 0 ), 0, AreaEnd - AreaStart);
+        return true;
+#else
+        const long pos = File->getPos();
+        if (relativeMovement)
+        {
+                if (pos + finalPos > AreaEnd)
+                        finalPos = AreaEnd - pos;
+        }
+        else
+        {
+                finalPos += AreaStart;
+                if (finalPos > AreaEnd)
+                        return false;
+        }
+        return File->seek(finalPos, relativeMovement);
+#endif
+}
+//! returns size of file
+long CLimitReadFile::getSize() const
+{
+        return AreaEnd - AreaStart;
+}
+//! returns where in the file we are.
+long CLimitReadFile::getPos() const
+{
+#if 1
+        return Pos;
+#else
+        return File->getPos() - AreaStart;
+#endif
+}
+//! returns name of file
+const io::path& CLimitReadFile::getFileName() const
+{
+        return Filename;
+}
+IReadFile* createLimitReadFile(const io::path& fileName, IReadFile* alreadyOpenedFile, long pos, long areaSize)
+{
+        return new CLimitReadFile(alreadyOpenedFile, pos, areaSize, fileName);
+}
+} // end namespace io
+} // end namespace irr

diff --git a/libraries/irrlicht-1.8/source/Irrlicht/CLimitReadFile.cpp b/libraries/irrlicht-1.8/source/Irrlicht/CLimitReadFile.cpp new file mode 100644 index 0000000..51afaad --- /dev/null +++ b/libraries/irrlicht-1.8/source/Irrlicht/CLimitReadFile.cpp
@@ -0,0 +1,127 @@
	1	// Copyright (C) 2002-2012 Nikolaus Gebhardt
	2	// This file is part of the "Irrlicht Engine".
	3	// For conditions of distribution and use, see copyright notice in irrlicht.h
	4
	5	#include "CLimitReadFile.h"
	6	#include "irrString.h"
	7
	8	namespace irr
	9	{
	10	namespace io
	11	{
	12
	13
	14	CLimitReadFile::CLimitReadFile(IReadFile* alreadyOpenedFile, long pos,
	15	long areaSize, const io::path& name)
	16	: Filename(name), AreaStart(0), AreaEnd(0), Pos(0),
	17	File(alreadyOpenedFile)
	18	{
	19	#ifdef _DEBUG
	20	setDebugName("CLimitReadFile");
	21	#endif
	22
	23	if (File)
	24	{
	25	File->grab();
	26	AreaStart = pos;
	27	AreaEnd = AreaStart + areaSize;
	28	}
	29	}
	30
	31
	32	CLimitReadFile::~CLimitReadFile()
	33	{
	34	if (File)
	35	File->drop();
	36	}
	37
	38
	39	//! returns how much was read
	40	s32 CLimitReadFile::read(void* buffer, u32 sizeToRead)
	41	{
	42	#if 1
	43	if (0 == File)
	44	return 0;
	45
	46	s32 r = AreaStart + Pos;
	47	s32 toRead = core::s32_min(AreaEnd, r + sizeToRead) - core::s32_max(AreaStart, r);
	48	if (toRead < 0)
	49	return 0;
	50	File->seek(r);
	51	r = File->read(buffer, toRead);
	52	Pos += r;
	53	return r;
	54	#else
	55	const long pos = File->getPos();
	56
	57	if (pos >= AreaEnd)
	58	return 0;
	59
	60	if (pos + (long)sizeToRead >= AreaEnd)
	61	sizeToRead = AreaEnd - pos;
	62
	63	return File->read(buffer, sizeToRead);
	64	#endif
	65	}
	66
	67
	68	//! changes position in file, returns true if successful
	69	bool CLimitReadFile::seek(long finalPos, bool relativeMovement)
	70	{
	71	#if 1
	72	Pos = core::s32_clamp(finalPos + (relativeMovement ? Pos : 0 ), 0, AreaEnd - AreaStart);
	73	return true;
	74	#else
	75	const long pos = File->getPos();
	76
	77	if (relativeMovement)
	78	{
	79	if (pos + finalPos > AreaEnd)
	80	finalPos = AreaEnd - pos;
	81	}
	82	else
	83	{
	84	finalPos += AreaStart;
	85	if (finalPos > AreaEnd)
	86	return false;
	87	}
	88
	89	return File->seek(finalPos, relativeMovement);
	90	#endif
	91	}
	92
	93
	94	//! returns size of file
	95	long CLimitReadFile::getSize() const
	96	{
	97	return AreaEnd - AreaStart;
	98	}
	99
	100
	101	//! returns where in the file we are.
	102	long CLimitReadFile::getPos() const
	103	{
	104	#if 1
	105	return Pos;
	106	#else
	107	return File->getPos() - AreaStart;
	108	#endif
	109	}
	110
	111
	112	//! returns name of file
	113	const io::path& CLimitReadFile::getFileName() const
	114	{
	115	return Filename;
	116	}
	117
	118
	119	IReadFile* createLimitReadFile(const io::path& fileName, IReadFile* alreadyOpenedFile, long pos, long areaSize)
	120	{
	121	return new CLimitReadFile(alreadyOpenedFile, pos, areaSize, fileName);
	122	}
	123
	124
	125	} // end namespace io
	126	} // end namespace irr
	127