mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-21 01:08:25 +00:00
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
/* 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.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*/
|
|
|
|
#include "teenagent/pack.h"
|
|
#include "common/util.h"
|
|
#include "common/debug.h"
|
|
|
|
namespace TeenAgent {
|
|
|
|
Pack::Pack() : count(0), offsets(0) {}
|
|
|
|
Pack::~Pack() {
|
|
close();
|
|
}
|
|
|
|
|
|
void Pack::close() {
|
|
delete[] offsets;
|
|
offsets = NULL;
|
|
file.close();
|
|
}
|
|
|
|
|
|
void Pack::open(const Common::String &filename) {
|
|
file.open(filename);
|
|
count = file.readUint32LE();
|
|
debug(0, "opened %s, found %u entries", filename.c_str(), count);
|
|
offsets = new uint32[count + 1];
|
|
for (uint32 i = 0; i <= count; ++i) {
|
|
offsets[i] = file.readUint32LE();
|
|
//debug(0, "%d: %06x", i, offsets[i]);
|
|
}
|
|
/* for (uint32 i = 0; i < count; ++i) {
|
|
debug(0, "%d: len = %d", i, offsets[i + 1] - offsets[i]);
|
|
}
|
|
*/
|
|
}
|
|
|
|
uint32 Pack::get_size(uint32 id) const {
|
|
if (id < 1 || id > count)
|
|
return 0;
|
|
return offsets[id] - offsets[id - 1];
|
|
}
|
|
|
|
uint32 Pack::read(uint32 id, byte *dst, uint32 size) const {
|
|
if (id < 1 || id > count)
|
|
return 0;
|
|
|
|
file.seek(offsets[id - 1]);
|
|
uint32 rsize = offsets[id] - offsets[id - 1];
|
|
uint32 r = file.read(dst, MIN(rsize, size));
|
|
//debug(0, "read(%u, %u) = %u", id, size, r);
|
|
return r;
|
|
}
|
|
|
|
Common::SeekableReadStream *Pack::getStream(uint32 id) const {
|
|
if (id < 1 || id > count)
|
|
return 0;
|
|
//debug(0, "stream: %04x-%04x", offsets[id - 1], offsets[id]);
|
|
return new Common::SeekableSubReadStream(&file, offsets[id - 1], offsets[id], Common::DisposeAfterUse::NO);
|
|
}
|
|
|
|
} // End of namespace TeenAgent
|