Zitat von Paul van Helden <p...@planetgis.co.za>:
On 2010/02/09 04:20 PM, Mattias Gärtner wrote:
ExpandFileName does exactly that.
No. ExpandFilename does much more and less. It corrects \ and / to
path delim, expands a relative filename with the *current working
directory* (Get/SetCurrentDir) and it expands tilde '~' to $HOME
under Linux.
If you want only create an absolute path from a directory and a
relative path use:
AbsPath:=AppendPathDelim(BaseDir)+RelPath;
This can create a file like '/usr/../lib' or '/usr/./lib' or
'/usr//lib', which are all valid file names, just somewhat ugly.
To resolve '..', '.' and double path delims use TrimFilename:
AbsPath:=TrimFilename(BaseDir+PathDelim+RelPath);
The above three would result in '/usr/lib'.
/usr/../lib is of course resolved to /lib, not /usr/lib.
To even resolve system specials like '~' and cut trailing path
delim use CleanAndExpandFilename:
AbsPath:=CleanAndExpandFilename(BaseDir+PathDelim+RelPath);
CleanAndExpandDirectory is like CleanAndExpandFilename but appends
a path delim if not already there.
If you even want to resolve symlinks or get the real file name
(e.g. OS X UTF8 normalization, case insensitive file systems) there
are functions for that too.
Thanks Mattias (& Michael)! What a wonderful explanation! That
FExpand function is a beast and I didn't study it properly. I will
indeed start using it.
Where is the file tutorial on the wiki?
Mattias
--
_______________________________________________
Lazarus mailing list
Lazarus@lists.lazarus.freepascal.org
http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus