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-rw-r--r--engines/voyeur/files.cpp143
1 files changed, 143 insertions, 0 deletions
diff --git a/engines/voyeur/files.cpp b/engines/voyeur/files.cpp
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 "voyeur/files.h"
+
+namespace Voyeur {
+
+FilesManager::FilesManager() {
+ _decompressSize = 0x7000;
+}
+
+bool FilesManager::openBOLTLib(const Common::String &filename, BoltFile *&boltFile) {
+ if (boltFile != NULL) {
+ _curLibPtr = boltFile;
+ return true;
+ }
+
+ // TODO: Specific library classes for buoy.blt versus stampblt.blt
+ // Create the bolt file interface object and load the index
+ boltFile = _curLibPtr = new BoltFile();
+ return true;
+}
+
+/*------------------------------------------------------------------------*/
+
+#define BOLT_GROUP_SIZE 16
+
+BoltFile *BoltFile::_curLibPtr = NULL;
+BoltGroup *BoltFile::_curGroupPtr = NULL;
+byte *BoltFile::_curMemInfoPtr = NULL;
+int BoltFile::_fromGroupFlag = 0;
+
+BoltFile::BoltFile() {
+ if (!_curFd.open("buoy.blt"))
+ error("Could not open buoy.blt");
+ _curFilePosition = 0;
+
+ // Read in the file header
+ byte header[16];
+ _curFd.read(&header[0], 16);
+
+ if (strncmp((const char *)&header[0], "BOLT", 4) != 0)
+ error("Tried to load non-bolt file");
+
+ int totalGroups = header[11] ? header[11] : 0x100;
+ for (int i = 0; i < totalGroups; ++i)
+ _groups.push_back(BoltGroup(_curFd.readStream(_curFd.size())));
+}
+
+BoltFile::~BoltFile() {
+ _curFd.close();
+}
+
+bool BoltFile::getBoltGroup(uint32 id) {
+ ++_fromGroupFlag;
+ _curLibPtr = this;
+ _curGroupPtr = &_groups[(id >> 8) & 0xff];
+ int count = _curGroupPtr->_count ? _curGroupPtr->_count : 256;
+
+ if (_curGroupPtr->_groupPtr) {
+ // Group already loaded
+ _curMemInfoPtr = _curGroupPtr->_groupPtr;
+ } else {
+ // Load the group
+ _curGroupPtr->load();
+ }
+
+ if (_curGroupPtr->_callInitGro)
+ initGro();
+
+ if ((id >> 16) == 0) {
+ if (!_curGroupPtr->_loaded) {
+ _curGroupPtr->load();
+ } else {
+ id &= 0xff00;
+ for (int idx = 0; idx < count; ++idx, ++id) {
+ byte *member = getBoltMember(id);
+ assert(member);
+ }
+ }
+ }
+
+ resolveAll();
+ --_fromGroupFlag;
+ return true;
+}
+
+/*------------------------------------------------------------------------*/
+
+BoltGroup::BoltGroup(Common::SeekableReadStream *f): _file(f) {
+ byte buffer[BOLT_GROUP_SIZE];
+
+ _groupPtr = NULL;
+
+ _file->read(&buffer[0], BOLT_GROUP_SIZE);
+ _loaded = false;
+ _callInitGro = buffer[1] != 0;
+ _count = buffer[3];
+ _fileOffset = READ_LE_UINT32(&buffer[8]);
+}
+
+void BoltGroup::load() {
+ _file->seek(_fileOffset);
+
+ byte header[4];
+ _file->read(&header[0], 4);
+
+ // Read the entries
+ int count = _count ? _count : 256;
+ for (int i = 0; i < count; ++i)
+ _entries.push_back(BoltEntry(_file));
+}
+
+/*------------------------------------------------------------------------*/
+
+BoltEntry::BoltEntry(Common::SeekableReadStream *f): _file(f) {
+
+}
+
+void BoltEntry::load() {
+
+}
+
+} // End of namespace Voyeur