1 /* ScummVM Tools
2 *
3 * ScummVM Tools is the legal property of its developers, whose
4 * names are too numerous to list here. Please refer to the
5 * COPYRIGHT file distributed with this source distribution.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 */
21
22 /* Split one-big-file Macintosh game data into seperate .00x files for ScummVM */
23
24 #include "extract_scumm_mac.h"
25
26 #include <algorithm>
27
ExtractScummMac(const std::string & name)28 ExtractScummMac::ExtractScummMac(const std::string &name) : Tool(name, TOOLTYPE_EXTRACTION) {
29 ToolInput input;
30 input.format = "*.*";
31 _inputPaths.push_back(input);
32
33 _shorthelp = "Extract data files from the single data file of later LucasArts Macintosh SCUMM games.";
34 _helptext =
35 "\nUsage: " + getName() + " [-o <output dir> = out/] <file>\n" +
36 _shorthelp + "\n";
37 }
38
inspectInput(const Common::Filename & filename)39 InspectionMatch ExtractScummMac::inspectInput(const Common::Filename &filename) {
40 std::string name = filename.getFullName();
41 std::transform(name.begin(), name.end(), name.begin(), tolower);
42 std::string::size_type pos = name.find(" data");
43 if (pos == name.length() - 5) // True if the file name ends with " Data"
44 return IMATCH_PERFECT;
45 return IMATCH_AWFUL;
46 }
47
execute()48 void ExtractScummMac::execute() {
49 Common::Filename inPath(_inputPaths[0].path);
50 Common::Filename outPath(_outputPath);
51
52 if (outPath.empty())
53 outPath.setFullPath("./");
54
55 Common::File ifp(inPath, "rb");
56
57 // Get the length of the data file to use for consistency checks
58 uint32 dataFileLength = ifp.size();
59
60 // Read offset and length to the file records
61 uint32 fileRecordOffset = ifp.readUint32BE();
62 uint32 fileRecordLength = ifp.readUint32BE();
63
64 // Do a quick check to make sure the offset and length are good
65 if (fileRecordOffset + fileRecordLength > dataFileLength)
66 error("File records out of bounds");
67
68 // Do a little consistancy check on fileRecordLength
69 if (fileRecordLength % 0x28)
70 error("File record length not multiple of 40");
71
72 // Extract the files
73 for (uint32 i = 0; i < fileRecordLength; i += 0x28) {
74 // read a file record
75 ifp.seek(fileRecordOffset + i, SEEK_SET);
76
77 uint32 fileOffset = ifp.readUint32BE();
78 uint32 fileLength = ifp.readUint32BE();
79
80 char fileName[0x21];
81 ifp.read_throwsOnError(fileName, 0x20);
82 fileName[0x20] = 0;
83
84 if (!fileName[0])
85 error("File has no name");
86
87 print("Extracting %s...", fileName);
88
89 // Consistency check. make sure the file data is in the file
90 if (fileOffset + fileLength > dataFileLength)
91 error("File out of bounds");
92
93 // Write a file
94 ifp.seek(fileOffset, SEEK_SET);
95
96 outPath.setFullName(fileName);
97 Common::File ofp(outPath, "wb");
98
99 byte *buf = new byte[fileLength];
100 ifp.read_throwsOnError(buf, fileLength);
101 ofp.write(buf, fileLength);
102 delete[] buf;
103 }
104 }
105
106 #ifdef STANDALONE_MAIN
main(int argc,char * argv[])107 int main(int argc, char *argv[]) {
108 return export_main(extract_scumm_mac)(argc, argv);
109 }
110 #endif
111