diff options
Diffstat (limited to 'fbreader/src/formats/chm/E8Decoder.cpp')
-rw-r--r-- | fbreader/src/formats/chm/E8Decoder.cpp | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/fbreader/src/formats/chm/E8Decoder.cpp b/fbreader/src/formats/chm/E8Decoder.cpp deleted file mode 100644 index 53b9335..0000000 --- a/fbreader/src/formats/chm/E8Decoder.cpp +++ /dev/null @@ -1,61 +0,0 @@ -/* - * 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. - */ - -#include "LZXDecompressor.h" - -void LZXDecompressor::E8Decoder::reset(unsigned int fileSize) { - myFileSize = fileSize; - myFramesCounter = 0; - myPosition = 0; -} - -void LZXDecompressor::E8Decoder::decode(unsigned char *buffer, const std::size_t size) { - if (myFramesCounter >= 32768) { - return; - } - ++myFramesCounter; - if (myFileSize == 0) { - return; - } - - myPosition += size; - - if (size <= 10) { - return; - } - - const unsigned char *end = buffer + size - 10; - - for (unsigned char *ptr = buffer; ptr < end; ) { - if (*ptr == 0xE8) { - int absoluteOffset = - ptr[1] + (ptr[2] << 8) + (ptr[3] << 16) + (ptr[4] << 24); - int relativeOffset = - (absoluteOffset >= 0) ? - absoluteOffset - (ptr - buffer) : absoluteOffset + myFileSize; - ptr[1] = (unsigned char)relativeOffset; - ptr[2] = (unsigned char)(relativeOffset >> 8); - ptr[3] = (unsigned char)(relativeOffset >> 16); - ptr[4] = (unsigned char)(relativeOffset >> 24); - ptr += 5; - } else { - ++ptr; - } - } -} |