added some preliminary game auto detect code to the launcher; this required a small change to the FS API, Windows/Morphos code will have to be adapted slightly I fear. Also, not all games are detected correctly, and some probably never will be, so we still have to add a dialog for cases where auto detect doesn't work

svn-id: r5600

2 files changed, 17 insertions, 5 deletions

diff --git a/backends/fs/fs.h b/backends/fs/fs.h
index 47e47d3a9e..7bb63c9671 100644
--- a/backends/fs/fs.h
+++ b/backends/fs/fs.h
@@ -68,6 +68,16 @@ protected:
 	typedef ScummVM::String String;
 
 public:
+
+	/*
+	 * Flag to tell listDir() which kind of files to list.
+	 */
+	typedef enum {
+		kListFilesOnly = 1,
+		kListDirectoriesOnly = 2,
+		kListAll = 3
+	} ListMode;
+
 	/*
 	 * The starting point for any file system browsing. Returns a special node
 	 * representing the FS root.
@@ -110,7 +120,7 @@ public:
 	 * List the content of this directory node.
 	 * If this node is not a directory, throw an exception or call error().
 	 */
-	virtual FSList *listDir() const = 0;
+	virtual FSList *listDir(ListMode mode = kListDirectoriesOnly) const = 0;
 
 	/*
 	 * The parent node of this directory.
diff --git a/backends/fs/posix/posix-fs.cpp b/backends/fs/posix/posix-fs.cpp
index 0ea131b3f9..5cdda13bc2 100644
--- a/backends/fs/posix/posix-fs.cpp
+++ b/backends/fs/posix/posix-fs.cpp
@@ -50,7 +50,7 @@ public:
 	virtual bool isDirectory() const { return _isDirectory; }
 	virtual String path() const { return _path; }
 
-	virtual FSList *listDir() const;
+	virtual FSList *listDir(ListMode mode = kListDirectoriesOnly) const;
 	virtual FilesystemNode *parent() const;
 	virtual FilesystemNode *clone() const { return new POSIXFilesystemNode(this); }
 };
@@ -85,7 +85,7 @@ POSIXFilesystemNode::POSIXFilesystemNode(const POSIXFilesystemNode *node) {
 	_path = node->_path;
 }
 
-FSList *POSIXFilesystemNode::listDir() const {
+FSList *POSIXFilesystemNode::listDir(ListMode mode) const {
 	assert(_isDirectory);
 	DIR *dirp = opendir(_path.c_str());
 	struct stat st;
@@ -109,8 +109,10 @@ FSList *POSIXFilesystemNode::listDir() const {
 			continue;
 		entry._isDirectory = S_ISDIR(st.st_mode);
 
-		// FIXME - skip any non-directories for now
-		if (!entry._isDirectory) continue;
+		// Honor the chosen mode
+		if ((mode == kListFilesOnly && entry._isDirectory) ||
+			(mode == kListDirectoriesOnly && !entry._isDirectory))
+			continue;
 
 		if (entry._isDirectory)
 			entry._path += "/";