1 /* ResidualVM - A 3D game interpreter
2 *
3 * ResidualVM is the legal property of its developers, whose names
4 * are too numerous to list here. Please refer to the AUTHORS
5 * file distributed with this source distribution.
6 *
7 * Additional copyright for this file:
8 * Copyright (C) 1999-2000 Revolution Software Ltd.
9 * This code is based on source code created by Revolution Software,
10 * used with permission.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
25 *
26 */
27
28 #include "engines/icb/common/px_common.h"
29 #include "engines/icb/p4.h"
30 #include "engines/icb/zsupport.h"
31 #include "engines/icb/res_man_pc.h"
32
33 namespace ICB {
34
35 #define BUFLEN 65536
36
37 //static char buf[BUFLEN];
38
fileGetZipLength(const char * inFn)39 uint32 fileGetZipLength(const char *inFn) {
40 Common::SeekableReadStream *fileStream = openDiskFileForBinaryStreamRead(inFn);
41 uint32 len = fileGetZipLength2(fileStream);
42 delete fileStream;
43 return len;
44 }
45
fileGetZipLength2(Common::SeekableReadStream * fileStream)46 uint32 fileGetZipLength2(Common::SeekableReadStream *fileStream) {
47 error("TODO: Fix compression");
48 #if 0
49 gzFile in;
50 uint32 t = 0;
51
52 int32 noOfFile = fileno(file);
53 in = gzdopen(noOfFile , "rb");
54
55 if (in == NULL)
56 return 0;
57
58 gzread(in, &t, sizeof(int32));
59
60 return t;
61 #endif
62 }
63
memUncompress(uint8 * outMem,const char * inFn)64 uint32 memUncompress(uint8 *outMem, const char *inFn) {
65 Common::SeekableReadStream *fileStream = openDiskFileForBinaryStreamRead(inFn);
66
67 uint32 retVal = memUncompress(outMem, inFn, fileStream);
68
69 delete fileStream;
70
71 return retVal;
72 }
73
memUncompress(uint8 * outMem,const char * inFn,Common::SeekableReadStream * file)74 uint32 memUncompress(uint8 *outMem, const char *inFn, Common::SeekableReadStream *file) {
75 error("TODO: Fix compression");
76 #if 0
77 gzFile in;
78 uint8 *myp;
79 uint32 uncompressedLen;
80
81
82 int32 noOfFile = fileno(file);
83 in = gzdopen(noOfFile , "rb");
84
85 if (in == NULL) {
86 fprintf(stderr, "error opening zipped file %s\n", inFn);
87 return 0;
88 }
89 // Read the length
90 if (gzread(in, &uncompressedLen, 4) != 4) {
91 fprintf(stderr, "error in zipped file %s\n", inFn);
92 return 0;
93 }
94
95 uint32 bytesRead = 0;
96 uint32 bytesToRead = uncompressedLen;
97
98 myp = outMem;
99
100 while (bytesToRead) {
101 // Work out how much to read this go
102 uint32 bytesToReadThisPass = bytesToRead;
103 // Only fill a buffer
104 if (bytesToReadThisPass > BUFLEN)
105 bytesToReadThisPass = BUFLEN;
106
107 // Read in those bytes
108 uint32 bytesReadThisPass = gzread(in, buf, bytesToReadThisPass);
109 if (bytesReadThisPass == 0)
110 break;
111
112 // Uypdate the counters and pointers
113 bytesRead += bytesReadThisPass;
114 bytesToRead -= bytesReadThisPass;
115
116 // And copy the data over
117 memcpy(myp, buf, bytesReadThisPass);
118 myp += bytesReadThisPass;
119 }
120 #endif
121 return 1;
122 }
123
124 } // End of namespace ICB
125