Initial import (as is) from Debian Snapshot's 'fbreader' source code (https://snapshot.debian.org/package/fbreader/0.99.4%2Bdfsg-6).

The Debian code is provided under GPL2 license.

Signed-off-by: Michele Calgaro <[email protected]>

1 files changed, 63 insertions, 0 deletions

diff --git a/fbreader/src/formats/pdb/HuffDecompressor.h b/fbreader/src/formats/pdb/HuffDecompressor.h
new file mode 100644
index 0000000..76539e9
--- /dev/null
+++ b/fbreader/src/formats/pdb/HuffDecompressor.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2004-2012 Geometer Plus <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#ifndef __HUFFDECOMPRESSOR_H__
+#define __HUFFDECOMPRESSOR_H__
+
+#include <string>
+
+class ZLInputStream;
+class BitReader;
+
+class HuffDecompressor {
+
+public:
+	HuffDecompressor(ZLInputStream& stream, 
+						const std::vector<unsigned long>::const_iterator beginHuffRecordOffsetIt, 
+						const std::vector<unsigned long>::const_iterator endHuffRecordOffsetIt,
+						const unsigned long endHuffDataOffset, const unsigned long extraFlags);
+	~HuffDecompressor();
+
+	std::size_t decompress(ZLInputStream &stream, char *buffer, std::size_t compressedSize, std::size_t maxUncompressedSize);
+	bool error() const;
+private:
+	std::size_t sizeOfTrailingEntries(unsigned char* data, std::size_t size) const;
+	std::size_t readVariableWidthIntegerBE(unsigned char* ptr, std::size_t psize) const;
+	void bitsDecompress(BitReader bits, std::size_t depth = 0);
+
+private:
+	unsigned long myEntryBits;
+	unsigned long myExtraFlags;
+
+	unsigned long* myCacheTable;
+	unsigned long* myBaseTable;
+	unsigned char* myData;
+	unsigned char** myDicts;
+
+	char* myTargetBuffer;
+	char* myTargetBufferEnd;
+	char* myTargetBufferPtr;
+
+	enum {
+		ERROR_NONE,
+		ERROR_CORRUPTED_FILE
+	} myErrorCode;
+};
+
+#endif /* __HUFFDECOMPRESSOR_H__ */