/// <summary>
/// Returns an absolute path for the given relative path.
/// If provided, the systemId will be used to generate the path.
/// Wildcards are supported.
/// Logic will fallback until an absolute path is found,
/// using Global Base as a last resort
/// </summary>
public static string AbsolutePathFor(this PathEntryCollection collection, string path, string systemId)
{
// warning: supposedly Path.GetFullPath accesses directories (and needs permissions)
// if this poses a problem, we need to paste code from .net or mono sources and fix them to not pose problems, rather than homebrew stuff
return(Path.GetFullPath(collection.AbsolutePathForInner(path, systemId)));
}
private static string AbsolutePathForInner(this PathEntryCollection collection, string path, string systemId)
{
// Hack
if (systemId == "Global")
{
return(collection.AbsolutePathForInner(path, systemId: null));
}
// This function translates relative path and special identifiers in absolute paths
if (path.Length < 1)
{
return(collection.GlobalBaseAbsolutePath());
}
if (path == "%recent%")
{
return(Environment.SpecialFolder.Recent.ToString());
}
if (path.StartsWith("%exe%"))
{
return(PathUtils.ExeDirectoryPath + path.Substring(5));
}
if (path.StartsWith("%rom%"))
{
return(collection.LastRomPath + path.Substring(5));
}
if (path[0] == '.')
{
if (!string.IsNullOrWhiteSpace(systemId))
{
path = path.Remove(0, 1);
path = path.Insert(0, collection.BaseFor(systemId));
}
if (path.Length == 1)
{
return(collection.GlobalBaseAbsolutePath());
}
if (path[0] == '.')
{
path = path.Remove(0, 1);
path = path.Insert(0, collection.GlobalBaseAbsolutePath());
}
return(path);
}
if (Path.IsPathRooted(path))
{
return(path);
}
//handling of initial .. was removed (Path.GetFullPath can handle it)
//handling of file:// or file:\\ was removed (can Path.GetFullPath handle it? not sure)
// all bad paths default to EXE
return(PathUtils.ExeDirectoryPath);
}
