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/* ScummVM - Scumm Interpreter
* Copyright (C) 2006 The ScummVM project
*
* 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 "common/file.h"
#include "parallaction/disk.h"
namespace Parallaction {
#define MAX_ARCHIVE_ENTRIES 384
#define DIRECTORY_OFFSET_IN_FILE 0x4000
static Common::File _archive;
static char _archiveDir[MAX_ARCHIVE_ENTRIES][32];
static uint32 _archiveLenghts[MAX_ARCHIVE_ENTRIES];
static uint32 _archiveOffsets[MAX_ARCHIVE_ENTRIES];
static uint32 _handle = MAX_ARCHIVE_ENTRIES;
void openArchive(const char *file) {
debugC(1, kDebugDisk, "open archive '%s'", file);
if (_archive.isOpen()) closeArchive();
uint32 offset = DIRECTORY_OFFSET_IN_FILE;
char path[PATH_LEN];
strcpy(path, file);
if (!_archive.open(path))
errorFileNotFound(path);
_archive.skip(22);
_archive.read(_archiveDir, MAX_ARCHIVE_ENTRIES*32);
uint16 i;
for (i = 0; i < MAX_ARCHIVE_ENTRIES; i++) {
_archiveOffsets[i] = offset;
uint32 len = _archive.readUint32BE();
// if (len>0) printf("%i) %s - [%i bytes]\n", i, _archiveDir[i], len);
_archiveLenghts[i] = len;
offset += len;
}
// printf("%i entries found\n", i);
// printf("%i bytes of data\n", offset);
return;
}
void closeArchive() {
debugC(1, kDebugDisk, "close current archive");
if (!_archive.isOpen()) return;
_archive.close();
}
ArchivedFile *openArchivedFile(const char *name) {
uint16 i = 0;
for ( ; i < MAX_ARCHIVE_ENTRIES; i++) {
if (!scumm_stricmp(_archiveDir[i], name)) break;
}
if (i == MAX_ARCHIVE_ENTRIES) return NULL;
debugC(1, kDebugDisk, "file '%s' found in slot %i", name, i);
ArchivedFile *file = (ArchivedFile*)memAlloc(sizeof(ArchivedFile));
if (!file)
error("openArchivedFile: can't allocate buffer for '%s'", name);
file->_index = i;
file->_offset = _archiveOffsets[i];
file->_cursor = _archiveOffsets[i];
file->_endOffset = _archiveOffsets[i] + _archiveLenghts[i];
_handle = file->_index;
_archive.seek(file->_offset);
return file;
}
void closeArchivedFile(ArchivedFile *file) {
if (file) memFree(file);
_handle = MAX_ARCHIVE_ENTRIES;
return;
}
uint16 getArchivedFileLength(const char *name) {
// printf("getArchivedFileLength(%s)\n", name);
for (uint16 i = 0; i < MAX_ARCHIVE_ENTRIES; i++) {
if (!scumm_stricmp(_archiveDir[i], name))
return _archiveLenghts[i];
}
return 0;
}
int16 readArchivedFile(ArchivedFile *file, void *buffer, uint16 size) {
// printf("readArchivedFile(%i, %i)\n", file->_cursor, file->_endOffset);
if (file->_cursor == file->_endOffset) return -1;
if (file->_endOffset - file->_cursor < size)
size = file->_endOffset - file->_cursor;
_archive.seek(file->_cursor);
int16 read = _archive.read(buffer, size);
file->_cursor += read;
return read;
}
#if 0
int16 readArchivedFile(ArchivedFile *file, void *buffer, uint16 size) {
printf("readArchivedFile(%i, %i)\n", file->_cursor, file->_endOffset);
if (file->_cursor == file->_endOffset) return -1;
_archive.seek(file->_cursor);
int16 read = _archive.read(buffer, size);
file->_cursor += read;
return read;
}
#endif
char *readArchivedFileText(char *buf, uint16 size, void*) {
char *t = _archive.readLine(buf, size);
if (_archive.eof() || t == NULL) return NULL;
return t;
}
} // namespace Parallaction
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