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
153
154
155
156
157
158
|
/* 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 "dc.h"
#include "backends/fs/abstract-fs.h"
#include <ronin/cdfs.h>
#include <stdio.h>
#include <unistd.h>
/**
* Implementation of the ScummVM file system API based on Ronin.
*
* Parts of this class are documented in the base interface class, AbstractFilesystemNode.
*/
class RoninCDFileNode : public AbstractFilesystemNode {
protected:
Common::String _path;
public:
RoninCDFileNode(const Common::String &path) : _path(path) {};
virtual bool exists() const { return true; }
virtual Common::String getName() const { return lastPathComponent(_path, '/'); }
virtual Common::String getPath() const { return _path; }
virtual bool isDirectory() const { return false; }
virtual bool isReadable() const { return true; }
virtual bool isWritable() const { return false; }
virtual AbstractFilesystemNode *getChild(const Common::String &n) const { return NULL; }
virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const { return false; }
virtual AbstractFilesystemNode *getParent() const;
static AbstractFilesystemNode *makeFileNodePath(const Common::String &path);
};
/* A directory */
class RoninCDDirectoryNode : public RoninCDFileNode {
public:
RoninCDDirectoryNode(const Common::String &path) : RoninCDFileNode(path) {};
virtual bool isDirectory() const { return true; }
virtual AbstractFilesystemNode *getChild(const Common::String &n) const;
virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
};
/* A file/directory which does not exist */
class RoninCDNonexistingNode : public RoninCDFileNode {
public:
RoninCDNonexistingNode(const Common::String &path) : RoninCDFileNode(path) {};
virtual bool exists() const { return false; }
virtual bool isReadable() const { return false; }
};
AbstractFilesystemNode *RoninCDFileNode::makeFileNodePath(const Common::String &path) {
assert(path.size() > 0);
int fd;
if ((fd = open(path.c_str(), O_RDONLY)) >= 0) {
close(fd);
return new RoninCDFileNode(path);
} else if ((fd = open(path.c_str(), O_DIR|O_RDONLY)) >= 0) {
close(fd);
return new RoninCDDirectoryNode(path);
} else {
return NULL;
}
}
AbstractFilesystemNode *RoninCDDirectoryNode::getChild(const Common::String &n) const {
Common::String newPath(_path);
if (_path.lastChar() != '/')
newPath += '/';
newPath += n;
return makeFileNodePath(newPath);
}
bool RoninCDDirectoryNode::getChildren(AbstractFSList &myList, ListMode mode, bool hidden) const {
DIR *dirp = opendir(_path.c_str());
struct dirent *dp;
if (dirp == NULL)
return false;
// ... loop over dir entries using readdir
while ((dp = readdir(dirp)) != NULL) {
Common::String newPath(_path);
if (newPath.lastChar() != '/')
newPath += '/';
newPath += dp->d_name;
if (dp->d_size < 0) {
// Honor the chosen mode
if (mode == Common::FilesystemNode::kListFilesOnly)
continue;
myList.push_back(new RoninCDDirectoryNode(newPath+"/"));
} else {
// Honor the chosen mode
if (mode == Common::FilesystemNode::kListDirectoriesOnly)
continue;
myList.push_back(new RoninCDFileNode(newPath));
}
}
closedir(dirp);
return true;
}
AbstractFilesystemNode *RoninCDFileNode::getParent() const {
if (_path == "/")
return 0;
const char *start = _path.c_str();
const char *end = lastPathComponent(_path, '/');
return new RoninCDDirectoryNode(Common::String(start, end - start));
}
AbstractFilesystemNode *OSystem_Dreamcast::makeRootFileNode() const {
return new RoninCDDirectoryNode("/");
}
AbstractFilesystemNode *OSystem_Dreamcast::makeCurrentDirectoryFileNode() const {
return makeRootFileNode();
}
AbstractFilesystemNode *OSystem_Dreamcast::makeFileNodePath(const Common::String &path) const {
AbstractFilesystemNode *node = RoninCDFileNode::makeFileNodePath(path);
return (node? node : new RoninCDNonexistingNode(path));
}
|
