clean up file drivers: drivers now always receive paths with trailing slashes;

this makes handling the relative "root" directory not a special case (".").
mountpoints now always begin with a slash.  before, "/foo" and "foo" were
in two separate namespaces, which was weird and confusing; the two now
mean the same thing.  there are no more special "default mountpoints"; just
mount to "/".  "@path" mounts are now "/@path", and they do show up in
GetDirListing("/") (but, as before, opening "/@foo/bar" will never create
a "@foo/bar" path in a non-"@foo" mountpoint)

stepmania/src/RageFileDriverDirect.cpp

@@ -103,6 +103,7 @@ RageFileObj *MakeFileObjDirect( CString sPath, int mode, int &err )
 
 RageFileBasic *RageFileDriverDirect::Open( const CString &path, int mode, int &err )
 {
+	ASSERT( path.size() && path[0] == '/' );
 	CString sPath = path;
 
 	/* This partially resolves.  For example, if "abc/def" exists, and we're opening
@@ -174,8 +175,6 @@ bool RageFileDriverDirect::Ready()
 bool RageFileDriverDirect::Remount( const CString &sPath )
 {
 	root = sPath;
-	if( root.Right(1) != "/" )
-		root += '/';
 	((DirectFilenameDB *) FDB)->SetRoot( sPath );
 
 	/* If the root path doesn't exist, create it. */

stepmania/src/RageFileDriverZip.cpp

@@ -147,7 +147,7 @@ void RageFileDriverZip::ParseZipfile()
 
 		FileInfo *pInfo = new FileInfo( info );
 		m_pFiles.push_back( pInfo );
-		FDB->AddFile( pInfo->m_sName, pInfo->m_iUncompressedSize, pInfo->m_iCRC32, pInfo );
+		FDB->AddFile( "/" + pInfo->m_sName, pInfo->m_iUncompressedSize, pInfo->m_iCRC32, pInfo );
 	}
 
 	if( m_pFiles.size() == 0 )

stepmania/src/RageFileManager.cpp

@@ -313,25 +313,27 @@ RageFileManager::~RageFileManager()
 /* path must be normalized (FixSlashesInPlace, CollapsePath). */
 CString LoadedDriver::GetPath( const CString &path )
 {
-	/* Default mountpoints: */
-	if( MountPoint.size() == 0 )
+	/* If the path begins with /@, only match mountpoints that begin with /@. */
+	if( path.size() >= 2 && path[1] == '@' )
 	{
-		/* If the path begins with @, default mount points don't count. */
-		if( path.size() && path[0] == '@' )
+		if( MountPoint.size() < 2 || MountPoint[1] != '@' )
 			return "";
-		return path;
 	}
 	
 	if( path.Left( MountPoint.size() ).CompareNoCase( MountPoint ) )
 		return ""; /* no match */
 
-	return path.Right( path.size() - MountPoint.size() );
+	/* Add one, so we don't cut off the leading slash. */
+	CString sRet = path.Right( path.size() - MountPoint.size() + 1 );
+	return sRet;
 }
 
 static void NormalizePath( CString &sPath )
 {
 	FixSlashesInPlace( sPath );
 	CollapsePath( sPath, true );
+	if( sPath.size() == 0 || sPath[0] != '/' )
+		sPath.insert( sPath.begin(), '/' );
 }
 
 bool ilt( const CString &a, const CString &b ) { return a.CompareNoCase(b) < 0; }
@@ -356,8 +358,14 @@ void RageFileManager::GetDirListing( CString sPath, CStringArray &AddTo, bool bO
 
 		/* If returning the path, prepend the mountpoint name to the files this driver returned. */
 		if( bReturnPathToo )
+		{
 			for( unsigned j = OldStart; j < AddTo.size(); ++j )
-				AddTo[j] = ld.MountPoint + AddTo[j];
+			{
+				/* Skip the trailing slash on the mountpoint; there's already a slash there. */
+				CString &sPath = AddTo[j];
+				sPath.insert( 0, ld.MountPoint, ld.MountPoint.size()-1 );
+			}
+		}
 	}
 
 	UnreferenceAllDrivers( aDriverList );
@@ -415,6 +423,9 @@ void RageFileManager::Mount( CString Type, CString Root, CString MountPoint )
 
 	if( MountPoint.size() && MountPoint.Right(1) != "/" )
 		MountPoint += '/';
+	/* XXX: Backwards compatibility; */
+	if( MountPoint.Left(1) != "/" )
+		MountPoint = "/" + MountPoint;
 	ASSERT( Root != "" );
 
 	CHECKPOINT_M( ssprintf("\"%s\", \"%s\", \"%s\"",

stepmania/src/RageUtil_BackgroundLoader.cpp

@@ -83,7 +83,7 @@ CString BackgroundLoader::GetRequest()
 
 CString BackgroundLoader::GetCachePath( CString sPath ) const
 {
-	return m_sCachePathPrefix + "/" + sPath;
+	return m_sCachePathPrefix + sPath;
 }
 
 void BackgroundLoader::LoadThread()

stepmania/src/RageUtil_FileDB.cpp

@@ -113,7 +113,7 @@ RageFileManager::FileType FilenameDB::GetFileType( const CString &sPath )
 	CString Dir, Name;
 	SplitPath( sPath, Dir, Name );
 
-	if( Name == "." )
+	if( Name == "/" )
 		return RageFileManager::TYPE_DIR;
 
 	const FileSet *fs = GetFileSet( Dir );
@@ -152,7 +152,7 @@ int FilenameDB::GetFileHash( const CString &sPath )
 /* path should be fully collapsed, so we can operate in-place: no . or .. */
 bool FilenameDB::ResolvePath(CString &path)
 {
-	if( path == "." || path == "" )
+	if( path == "/" || path == "" )
 		return true;
 
 	/* Split path into components. */
@@ -186,9 +186,7 @@ bool FilenameDB::ResolvePath(CString &path)
 			return false;
 		}
 
-		if( ret.size() != 0 )
-			ret += "/";
-		ret += it->name;
+		ret += "/" + it->name;
 
 		fs = it->dirp;
 
@@ -264,7 +262,7 @@ FileSet *FilenameDB::GetFileSet( CString dir, bool create )
 	dir.Replace("//", "/"); /* foo//bar -> foo/bar */
 
 	if( dir == "" )
-		dir = ".";
+		dir = "/";
 
 	CString lower = dir;
 	lower.MakeLower();
@@ -328,7 +326,7 @@ FileSet *FilenameDB::GetFileSet( CString dir, bool create )
 	 * order of operations, here: since we just unlocked, any this->dirs searches we did
 	 * previously are no longer valid. */
 	FileSet **parent_dirp = NULL;
-	if( dir != "." && dir != "/" )
+	if( dir != "/" )
 	{
 		CString sParent = Dirname( dir );
 		if( sParent == "./" )
@@ -530,7 +528,6 @@ void FilenameDB::GetDirListing( CString sPath, CStringArray &AddTo, bool bOnlyDi
 {
 //	LOG->Trace( "GetDirListing( %s )", sPath.c_str() );
 
-	/* If you want the CWD, use ".". */
 	ASSERT(!sPath.empty());
 
 	/* Strip off the last path element and use it as a mask. */