Conversion between absolute and relative paths in Delphi

Question

Are there standard functions to perform absolute <--> relative path conversion in Delphi?

For example:

• \'Base\' path is \'C:\\Projects\\Projec

Answer 1

To convert to the absolute you have :

ExpandFileName

To have the relative path you have :

ExtractRelativePath

Answer 2

TPath.Combine(S1, S2);

Should be available since Delphi XE.

Answer 3

I am not too certain if this is still needed after 2+ years, but here is a way to get the Relative to Absolute (As for Absolute to Relative I would suggest philnext's ExtractRelativePath answer):

Unit: IOUtils

Parent: TPath

function GetFullPath(const BasePath: string): string;

It will return the full, absolute path for a given relative path. If the given path is already absolute, it will just return it as is.

Here is the link at Embarcadero: Get Full Path

And here is a link for Path Manipulation Routines