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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2006 The ScummVM project
*
* 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.
*
* $URL$
* $Id$
*/
#ifdef WIN32
#include "common/stdafx.h"
#include "backends/fs/fs.h"
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <tchar.h>
/*
* Implementation of the ScummVM file system API based on Windows API.
*/
class WindowsFilesystemNode : public AbstractFilesystemNode {
protected:
String _displayName;
bool _isDirectory;
bool _isValid;
bool _isPseudoRoot;
String _path;
public:
WindowsFilesystemNode();
WindowsFilesystemNode(const String &path);
virtual String displayName() const { return _displayName; }
virtual bool isValid() const { return _isValid; }
virtual bool isDirectory() const { return _isDirectory; }
virtual String path() const { return _path; }
virtual FSList listDir(ListMode) const;
virtual AbstractFilesystemNode *parent() const;
private:
static char *toAscii(TCHAR *x);
static const TCHAR* toUnicode(const char *x);
static void addFile (FSList &list, ListMode mode, const char *base, WIN32_FIND_DATA* find_data);
};
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;
}
char* WindowsFilesystemNode::toAscii(TCHAR *x) {
#ifndef UNICODE
return (char*)x;
#else
static char asciiString[MAX_PATH];
WideCharToMultiByte(CP_ACP, 0, x, _tcslen(x) + 1, asciiString, sizeof(asciiString), NULL, NULL);
return asciiString;
#endif
}
const TCHAR* WindowsFilesystemNode::toUnicode(const char *x) {
#ifndef UNICODE
return (const TCHAR *)x;
#else
static TCHAR unicodeString[MAX_PATH];
MultiByteToWideChar(CP_ACP, 0, x, strlen(x) + 1, unicodeString, sizeof(unicodeString) / sizeof(TCHAR));
return unicodeString;
#endif
}
void WindowsFilesystemNode::addFile(FSList &list, ListMode mode, const char *base, 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;
isDirectory = (find_data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? true : false);
if ((!isDirectory && mode == kListDirectoriesOnly) ||
(isDirectory && mode == 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(wrap(new WindowsFilesystemNode(entry)));
}
AbstractFilesystemNode *FilesystemNode::getRoot() {
return new WindowsFilesystemNode();
}
AbstractFilesystemNode *FilesystemNode::getNodeForPath(const String &path) {
return new WindowsFilesystemNode(path);
}
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 String &p) {
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 == 0xffffffff) {
_isValid = false;
_isDirectory = false;
} else {
_isValid = true;
_isDirectory = ((fileAttribs & FILE_ATTRIBUTE_DIRECTORY) != 0);
}
// FIXME: Is the following correct? Should we maybe check for path being
// empty and set it to true in this case?
// In any case, not setting _isPseudoRoot at all certainly is a bug.
_isPseudoRoot = false;
}
FSList WindowsFilesystemNode::listDir(ListMode mode) const {
assert(_isDirectory);
FSList myList;
if (_isPseudoRoot && mode != kListAllNoRoot) {
#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(wrap(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 myList;
addFile(myList, mode, _path.c_str(), &desc);
while (FindNextFile(handle, &desc))
addFile(myList, mode, _path.c_str(), &desc);
FindClose(handle);
}
return myList;
}
AbstractFilesystemNode *WindowsFilesystemNode::parent() 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 = String(start, end - start);
p->_isValid = true;
p->_isDirectory = true;
p->_displayName = lastPathComponent(p->_path);
p->_isPseudoRoot = false;
}
return p;
}
#endif // WIN32
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