Engine.StreamInterface

//==============================================================================
//	Created on: 10/12/2003
//	Handles file & directory manipulation for streaming music files.
//  Could support arbitrary filetypes with very little modification
//
//	Written by Ron Prestenback
//	© 2003, Epic Games, Inc.  All Rights Reserved
//==============================================================================
class StreamInterface extends StreamBase
    Native;

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var private globalconfig string CurrentDirectory;

// Directory Interface
native final private function string  GetBaseDirectory();
native final         function bool    GetDriveLetters( out array<string> Letters );
native final         function bool    GetDirectoryContents( out array<string> Contents, optional string DirectoryName, optional EFileType FileType );

native final         function string  CreateDirectory( string DirectoryName );
native final         function bool    RemoveDirectory( string DirectoryName );
native final         function bool    ValidDirectory( optional string DirectoryPath );

// ID3 Tags


// File manipulation
native final          function Stream    CreateStream( string FileName, optional bool bStrict ); // specify bStrict to indicate it isn't allowed to include relative paths when searching
native final          function bool      ValidFile( string FileName );
native final          function bool      LoadPlaylist( string FileName, out array<string> Lines, optional bool bStrict );

function string GetCurrentDirectory()
{
    if ( CurrentDirectory == "" || !ValidDirectory(CurrentDirectory) )
        ChangeDirectory(GetBaseDirectory());

    return CurrentDirectory;
}

function ChangeDirectory( string DirectoryName )
{
    local bool bSave;

    bSave = DirectoryName != CurrentDirectory;
    CurrentDirectory = DirectoryName;
    if ( bSave )
        SaveConfig();
}

function bool HandleDebugExec( string Command, string Param )
{
    local string str;
    local array<string> test;
    local int i;

    if ( Super.HandleDebugExec(Command, Param) )
        return true;

    switch ( Locs(Command) )
    {
    case "getbase": log(GetBaseDirectory());return true;
    case "getcurrent": log(GetCurrentDirectory());return true;
    case "validfilename": log(ValidFile(Param));return true;
    case "dir":
        GetDirectoryContents(test,param);
        log("directory list for"@param);
        for ( i = 0; i < test.Length;i++)
            log("   >"@test[i]);

        return true;

    case "chdir":
        str = GetCurrentDirectory();
        ChangeDirectory(param);
        log("old:"$str@"new:"$GetCurrentDirectory());
        return true;
    }

    return false;
}

defaultproperties
{
}