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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/* 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.
*
* $URL$
* $Id$
*/
#if defined(PALMOS_MODE)
#include "PalmVersion.h"
#include "globals.h"
#include "common/stdafx.h"
#include "backends/fs/abstract-fs.h"
/**
* Implementation of the ScummVM file system API based on PalmOS VFS API.
*
* Parts of this class are documented in the base interface class, AbstractFilesystemNode.
*/
class PalmOSFilesystemNode : public AbstractFilesystemNode {
protected:
String _displayName;
String _path;
bool _isDirectory;
bool _isValid;
bool _isPseudoRoot;
public:
/**
* Creates a PalmOSFilesystemNode with the root node as path.
*/
PalmOSFilesystemNode();
/**
* Creates a POSIXFilesystemNode for a given path.
*
* @param path String with the path the new node should point to.
*/
PalmOSFilesystemNode(const String &p);
virtual bool exists() const { return true; } //FIXME: this is just a stub
virtual String getDisplayName() const { return _displayName; }
virtual String getName() const { return _displayName; }
virtual String getPath() const { return _path; }
virtual bool isDirectory() const { return _isDirectory; }
virtual bool isReadable() const { return true; } //FIXME: this is just a stub
virtual bool isValid() const { return _isValid; }
virtual bool isWritable() const { return true; } //FIXME: this is just a stub
virtual AbstractFilesystemNode *getChild(const String &n) const;
virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
virtual AbstractFilesystemNode *getParent() const;
private:
/**
* Adds a single WindowsFilesystemNode to a given list.
* This method is used by getChildren() to populate the directory entries list.
*
* @param list List to put the file entry node in.
* @param mode Mode to use while adding the file entry to the list.
* @param base String with the directory being listed.
* @param find_data Describes a file that the FindFirstFile, FindFirstFileEx, or FindNextFile functions find.
*/
static void addFile(AbstractFSList &list, ListMode mode, const Char *base, FileInfoType* find_data);
};
/**
* Returns the last component of a given path.
*
* Examples:
* /foo/bar.txt would return /bar.txt
* /foo/bar/ would return /bar/
*
* @param str String containing the path.
* @return Pointer to the first char of the last component inside str.
*/
static const char *lastPathComponent(const Common::String &str) {
const char *start = str.c_str();
const char *cur = start + str.size() - 2;
while (cur >= start && *cur != '/') {
--cur;
}
return cur + 1;
}
void PalmOSFilesystemNode::addFile(AbstractFSList &list, ListMode mode, const char *base, FileInfoType* find_data) {
PalmOSFilesystemNode entry;
bool isDir;
isDir = (find_data->attributes & vfsFileAttrDirectory);
if ((!isDir && mode == FilesystemNode::kListDirectoriesOnly) ||
(isDir && mode == FilesystemNode::kListFilesOnly))
return;
entry._isDirectory = isDir;
entry._displayName = find_data->nameP;
entry._path = base;
entry._path += find_data->nameP;
if (entry._isDirectory)
entry._path += "/";
entry._isValid = true;
entry._isPseudoRoot = false;
list.push_back(new PalmOSFilesystemNode(entry));
}
PalmOSFilesystemNode::PalmOSFilesystemNode() {
_isDirectory = true;
_displayName = "Root";
_isValid = true;
_path = "/";
_isPseudoRoot = false;
}
PalmOSFilesystemNode::PalmOSFilesystemNode(const String &p) {
_path = p;
_displayName = lastPathComponent(p);
UInt32 attr;
FileRef handle;
Err error = VFSFileOpen(gVars->VFS.volRefNum, _path.c_str(), vfsModeRead, &handle);
if (!error) {
error = VFSFileGetAttributes(handle, &attr);
VFSFileClose(handle);
}
if (error) {
_isValid = false;
_isDirectory = false;
} else {
_isValid = true;
_isDirectory = (attr & vfsFileAttrDirectory);
}
_isPseudoRoot = false;
}
AbstractFilesystemNode *PalmOSFilesystemNode::getChild(const String &n) const {
assert(_isDirectory);
String newPath(_path);
if (_path.lastChar() != '/')
newPath += '/';
newPath += n;
FileRef handle;
UInt32 attr;
Err error = VFSFileOpen(gVars->VFS.volRefNum, newPath.c_str(), vfsModeRead, &handle);
if (error)
return 0;
error = VFSFileGetAttributes(handle, &attr);
VFSFileClose(handle);
if (error || !(attr & vfsFileAttrDirectory))
return 0;
return new PalmOSFilesystemNode(newPath);
}
bool PalmOSFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, bool hidden) const {
//TODO: honor the hidden flag
Err error;
Char nameP[256];
FileInfoType desc;
FileRef handle;
UInt32 dirIterator = expIteratorStart;
desc.nameP = nameP;
desc.nameBufLen = 256;
error = VFSFileOpen(gVars->VFS.volRefNum, _path.c_str(), vfsModeRead, &handle);
if (error)
return false;
while(dirIterator != expIteratorStop) {
error = VFSDirEntryEnumerate(handle, &dirIterator, &desc);
if (!error) {
addFile(myList, mode, _path.c_str(), &desc);
}
}
VFSFileClose(handle);
return true;
}
AbstractFilesystemNode *PalmOSFilesystemNode::getParent() const {
PalmOSFilesystemNode *p = 0;
if (!_isPseudoRoot) {
const char *start = _path.c_str();
const char *end = lastPathComponent(_path);
p = new PalmOSFilesystemNode();
p->_path = String(start, end - start);
p->_isValid = true;
p->_isDirectory = true;
p->_displayName = lastPathComponent(p->_path);
p->_isPseudoRoot =(p->_path == "/");
}
return p;
}
#endif // PALMOS_MODE
|