1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "glk/tads/detection.h"
#include "glk/tads/detection_tables.h"
#include "glk/blorb.h"
#include "common/debug.h"
#include "common/file.h"
#include "common/md5.h"
#include "engines/game.h"
namespace Glk {
namespace TADS {
void TADSMetaEngine::getSupportedGames(PlainGameList &games) {
for (const PlainGameDescriptor *pd = TADS2_GAME_LIST; pd->gameId; ++pd)
games.push_back(*pd);
for (const PlainGameDescriptor *pd = TADS3_GAME_LIST; pd->gameId; ++pd)
games.push_back(*pd);
}
GameDescriptor TADSMetaEngine::findGame(const char *gameId) {
for (const PlainGameDescriptor *pd = TADS2_GAME_LIST; pd->gameId; ++pd) {
if (!strcmp(gameId, pd->gameId)) {
GameDescriptor gd = *pd;
gd._options = OPTION_TADS2;
gd._supportLevel = kUnstableGame;
return gd;
}
}
for (const PlainGameDescriptor *pd = TADS3_GAME_LIST; pd->gameId; ++pd) {
if (!strcmp(gameId, pd->gameId)) {
GameDescriptor gd = *pd;
gd._options = OPTION_TADS3;
gd._supportLevel = kUnstableGame;
return gd;
}
}
return GameDescriptor::empty();
}
bool TADSMetaEngine::detectGames(const Common::FSList &fslist, DetectedGames &gameList) {
const char *const EXTENSIONS[] = { ".gam", ".t3", nullptr };
// Loop through the files of the folder
for (Common::FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
// Check for a recognised filename
if (file->isDirectory())
continue;
Common::String filename = file->getName();
bool hasExt = Blorb::hasBlorbExt(filename), isBlorb = true;
int tadsVersion = -1;
for (const char *const *ext = &EXTENSIONS[0]; *ext && !hasExt; ++ext)
hasExt = filename.hasSuffixIgnoreCase(*ext);
if (!hasExt)
continue;
// Open up the file and calculate the md5
Common::File gameFile;
if (!gameFile.open(*file))
continue;
Common::String md5 = Common::computeStreamMD5AsString(gameFile, 5000);
size_t filesize = gameFile.size();
gameFile.seek(0);
if (Blorb::isBlorb(gameFile, ID_TAD2))
tadsVersion = 2;
else if (Blorb::isBlorb(gameFile, ID_TAD3))
tadsVersion = 3;
else
isBlorb = false;
if (!isBlorb)
// Figure out the TADS version
tadsVersion = getTADSVersion(gameFile);
gameFile.close();
if (tadsVersion == -1)
// Not a TADS game, or Blorb containing TADS game, so can be ignored
continue;
// Check for known games
const GlkDetectionEntry *p = TADS_GAMES;
while (p->_gameId && p->_md5 && (md5 != p->_md5 || filesize != p->_filesize))
++p;
DetectedGame gd;
if (!p->_gameId) {
const GameDescriptor &desc = tadsVersion == 2 ? TADS2_GAME_LIST[0] : TADS3_GAME_LIST[0];
gameList.push_back(GlkDetectedGame(desc._gameId, desc._description, filename, md5, filesize));
} else {
PlainGameDescriptor gameDesc = findGame(p->_gameId);
gd = DetectedGame("glk", p->_gameId, gameDesc.description, p->_language, Common::kPlatformUnknown, p->_extra);
gd.addExtraEntry("filename", filename);
gameList.push_back(gd);
}
}
return !gameList.empty();
}
void TADSMetaEngine::detectClashes(Common::StringMap &map) {
for (const PlainGameDescriptor *pd = TADS2_GAME_LIST; pd->gameId; ++pd) {
if (map.contains(pd->gameId))
error("Duplicate game Id found - %s", pd->gameId);
map[pd->gameId] = "";
}
for (const PlainGameDescriptor *pd = TADS3_GAME_LIST; pd->gameId; ++pd) {
if (map.contains(pd->gameId))
error("Duplicate game Id found - %s", pd->gameId);
map[pd->gameId] = "";
}
}
int TADSMetaEngine::getTADSVersion(Common::SeekableReadStream &game) {
// Read in the start of the file
char buffer[16];
game.seek(0);
game.read(buffer, 16);
// Check for valid game headers
if (memcmp(buffer, "TADS2 bin\n\r\032", 12) == 0)
return 2;
else if (memcmp(buffer, "T3-image\r\n\032", 11) == 0)
return 3;
else
return -1;
}
} // End of namespace TADS
} // End of namespace Glk
|
