started to merge in Chrilith's PalmOS port

svn-id: r7219

1 files changed, 155 insertions, 0 deletions

diff --git a/backends/fs/palmos/palmos-fs.cpp b/backends/fs/palmos/palmos-fs.cpp
new file mode 100644
index 0000000000..5f634a8ca9
--- /dev/null
+++ b/backends/fs/palmos/palmos-fs.cpp
@@ -0,0 +1,155 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ */
+
+#if defined(__PALMOS_TRAPS__)
+
+#include "../fs.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * Implementation of the ScummVM file system API based on PalmOS VFS API.
+ */
+
+class PalmOSFilesystemNode : public FilesystemNode {
+protected:
+	String _displayName;
+	bool _isDirectory;
+	bool _isValid;
+	bool _isPseudoRoot;
+	String _path;
+	
+public:
+	PalmOSFilesystemNode();
+	PalmOSFilesystemNode(const Char *path);
+	PalmOSFilesystemNode(const PalmOSFilesystemNode *node);
+
+	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 FilesystemNode *parent() const;
+	virtual FilesystemNode *clone() const { return new PalmOSFilesystemNode(this); }
+
+private:
+	static void addFile (FSList* list, ListMode mode, const Char *base, FileInfoType* find_data);
+};
+
+void PalmOSFilesystemNode::addFile (FSList* list, ListMode mode, const char *base, FileInfoType* find_data) {
+	PalmOSFilesystemNode entry;
+	bool isDirectory;
+
+	isDirectory = (find_data->attributes & vfsFileAttrDirectory);
+
+	if ((!isDirectory && mode == kListDirectoriesOnly) ||
+		(isDirectory && mode == kListFilesOnly))
+		return;
+
+	entry._isDirectory = isDirectory;
+	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(entry);
+}
+
+FilesystemNode *FilesystemNode::getRoot() {
+	return new PalmOSFilesystemNode();
+}
+
+PalmOSFilesystemNode::PalmOSFilesystemNode() {
+	_isDirectory = true;
+	_displayName = "Root";
+	_isValid = true;
+	_path = "/";
+	_isPseudoRoot = true;
+}
+
+PalmOSFilesystemNode::PalmOSFilesystemNode(const PalmOSFilesystemNode *node) {
+	_displayName = node->_displayName;
+	_isDirectory = node->_isDirectory;
+	_isValid = node->_isValid;
+	_isPseudoRoot = node->_isPseudoRoot;
+	_path = node->_path;
+}
+
+FSList *PalmOSFilesystemNode::listDir(ListMode mode) const {
+
+	FSList *myList = new FSList();
+	Err e;
+	Char nameP[256];
+	FileInfoType desc;
+	FileRef handle;
+	UInt32 dirIterator = expIteratorStart;
+
+	desc.nameP = nameP;
+	desc.nameBufLen = 256;
+	e = VFSFileOpen(gVars->volRefNum, _path.c_str(), vfsModeRead, &handle);
+
+	if (e)
+		return myList;
+	
+	while(dirIterator != expIteratorStop) {
+		e = VFSDirEntryEnumerate(handle, &dirIterator, &desc);
+		if (!e) {
+			addFile(myList, mode, _path.c_str(), &desc);
+		}
+	}
+
+	VFSFileClose(handle);
+
+	return myList;
+}
+
+const char *lastPathComponent(const ScummVM::String &str) {
+        const char *start = str.c_str();
+        const char *cur = start + str.size() - 2;
+
+        while (cur > start && *cur != '/') {
+                --cur;
+        }
+
+        return cur+1;
+}
+
+FilesystemNode *PalmOSFilesystemNode::parent() const {
+
+	PalmOSFilesystemNode *p = new PalmOSFilesystemNode();
+
+	if (!_isPseudoRoot) {
+        const char *start = _path.c_str();
+        const char *end = lastPathComponent(_path);
+
+		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_TRAPS__