aboutsummaryrefslogtreecommitdiff
path: root/backends/fs/windows/windows-fs.cpp
blob: c32ad2da943c3c6742e8c4a82b67630347becd21 (plain)
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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/* 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.
 */

#if defined(WIN32)

// Disable symbol overrides so that we can use system headers.
#define FORBIDDEN_SYMBOL_ALLOW_ALL

#include "backends/fs/windows/windows-fs.h"
#include "backends/fs/stdiostream.h"

// F_OK, R_OK and W_OK are not defined under MSVC, so we define them here
// For more information on the modes used by MSVC, check:
// http://msdn2.microsoft.com/en-us/library/1w06ktdy(VS.80).aspx
#ifndef F_OK
#define F_OK 0
#endif

#ifndef R_OK
#define R_OK 4
#endif

#ifndef W_OK
#define W_OK 2
#endif

bool WindowsFilesystemNode::exists() const {
	return _access(_path.c_str(), F_OK) == 0;
}

bool WindowsFilesystemNode::isReadable() const {
	return _access(_path.c_str(), R_OK) == 0;
}

bool WindowsFilesystemNode::isWritable() const {
	return _access(_path.c_str(), W_OK) == 0;
}

void WindowsFilesystemNode::addFile(AbstractFSList &list, ListMode mode, const char *base, bool hidden, WIN32_FIND_DATA* find_data) {
	WindowsFilesystemNode entry;
	char *asciiName = toAscii(find_data->cFileName);
	bool isDirectory;

	// Skip local directory (.) and parent (..)
	if (!strcmp(asciiName, ".") || !strcmp(asciiName, ".."))
		return;

	// Skip hidden files if asked
	if ((find_data->dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) && !hidden)
		return;

	isDirectory = (find_data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? true : false);

	if ((!isDirectory && mode == Common::FSNode::kListDirectoriesOnly) ||
		(isDirectory && mode == Common::FSNode::kListFilesOnly))
		return;

	entry._isDirectory = isDirectory;
	entry._displayName = asciiName;
	entry._path = base;
	entry._path += asciiName;
	if (entry._isDirectory)
		entry._path += "\\";
	entry._isValid = true;
	entry._isPseudoRoot = false;

	list.push_back(new WindowsFilesystemNode(entry));
}

char* WindowsFilesystemNode::toAscii(TCHAR *str) {
#ifndef UNICODE
	return (char*)str;
#else
	static char asciiString[MAX_PATH];
	WideCharToMultiByte(CP_ACP, 0, str, _tcslen(str) + 1, asciiString, sizeof(asciiString), NULL, NULL);
	return asciiString;
#endif
}

const TCHAR* WindowsFilesystemNode::toUnicode(const char *str) {
#ifndef UNICODE
	return (const TCHAR *)str;
#else
	static TCHAR unicodeString[MAX_PATH];
	MultiByteToWideChar(CP_ACP, 0, str, strlen(str) + 1, unicodeString, sizeof(unicodeString) / sizeof(TCHAR));
	return unicodeString;
#endif
}

WindowsFilesystemNode::WindowsFilesystemNode() {
	_isDirectory = true;
#ifndef _WIN32_WCE
	// Create a virtual root directory for standard Windows system
	_isValid = false;
	_path = "";
	_isPseudoRoot = true;
#else
	_displayName = "Root";
	// No need to create a pseudo root directory on Windows CE
	_isValid = true;
	_path = "\\";
	_isPseudoRoot = false;
#endif
}

WindowsFilesystemNode::WindowsFilesystemNode(const Common::String &p, const bool currentDir) {
	if (currentDir) {
		char path[MAX_PATH];
		GetCurrentDirectory(MAX_PATH, path);
		_path = path;
	} else {
		assert(p.size() > 0);
		_path = p;
	}

	_displayName = lastPathComponent(_path, '\\');

	// Check whether it is a directory, and whether the file actually exists
	DWORD fileAttribs = GetFileAttributes(toUnicode(_path.c_str()));

	if (fileAttribs == INVALID_FILE_ATTRIBUTES) {
		_isDirectory = false;
		_isValid = false;
	} else {
		_isDirectory = ((fileAttribs & FILE_ATTRIBUTE_DIRECTORY) != 0);
		_isValid = true;
		// Add a trailing slash, if necessary.
		if (_isDirectory && _path.lastChar() != '\\') {
			_path += '\\';
		}
	}
	_isPseudoRoot = false;
}

AbstractFSNode *WindowsFilesystemNode::getChild(const Common::String &n) const {
	assert(_isDirectory);

	// Make sure the string contains no slashes
	assert(!n.contains('/'));

	Common::String newPath(_path);
	if (_path.lastChar() != '\\')
		newPath += '\\';
	newPath += n;

	return new WindowsFilesystemNode(newPath, false);
}

bool WindowsFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, bool hidden) const {
	assert(_isDirectory);

	if (_isPseudoRoot) {
#ifndef _WIN32_WCE
		// Drives enumeration
		TCHAR drive_buffer[100];
		GetLogicalDriveStrings(sizeof(drive_buffer) / sizeof(TCHAR), drive_buffer);

		for (TCHAR *current_drive = drive_buffer; *current_drive;
			current_drive += _tcslen(current_drive) + 1) {
				WindowsFilesystemNode entry;
				char drive_name[2];

				drive_name[0] = toAscii(current_drive)[0];
				drive_name[1] = '\0';
				entry._displayName = drive_name;
				entry._isDirectory = true;
				entry._isValid = true;
				entry._isPseudoRoot = false;
				entry._path = toAscii(current_drive);
				myList.push_back(new WindowsFilesystemNode(entry));
		}
#endif
	}
	else {
		// Files enumeration
		WIN32_FIND_DATA desc;
		HANDLE handle;
		char searchPath[MAX_PATH + 10];

		sprintf(searchPath, "%s*", _path.c_str());

		handle = FindFirstFile(toUnicode(searchPath), &desc);

		if (handle == INVALID_HANDLE_VALUE)
			return false;

		addFile(myList, mode, _path.c_str(), hidden, &desc);

		while (FindNextFile(handle, &desc))
			addFile(myList, mode, _path.c_str(), hidden, &desc);

		FindClose(handle);
	}

	return true;
}

AbstractFSNode *WindowsFilesystemNode::getParent() const {
	assert(_isValid || _isPseudoRoot);

	if (_isPseudoRoot)
		return 0;

	WindowsFilesystemNode *p = new WindowsFilesystemNode();
	if (_path.size() > 3) {
		const char *start = _path.c_str();
		const char *end = lastPathComponent(_path, '\\');

		p = new WindowsFilesystemNode();
		p->_path = Common::String(start, end - start);
		p->_isValid = true;
		p->_isDirectory = true;
		p->_displayName = lastPathComponent(p->_path, '\\');
		p->_isPseudoRoot = false;
	}

	return p;
}

Common::SeekableReadStream *WindowsFilesystemNode::createReadStream() {
	return StdioStream::makeFromPath(getPath(), false);
}

Common::WriteStream *WindowsFilesystemNode::createWriteStream() {
	return StdioStream::makeFromPath(getPath(), true);
}

#endif //#ifdef WIN32