IMPLEMENTATION MODULE FileName; 

IMPORT  InOut, Strings;

(*----------------------------------------------------------------*)

PROCEDURE Get(fname: ARRAY OF CHAR; VAR dir,name,ext: ARRAY OF CHAR);

VAR 
  LocalFname : Format;
  L          : CARDINAL;
  save       : CARDINAL;
  
BEGIN
  L := LENGTH(fname);
  save := L;
   (* separating the dir part from the filename+ext part *)
  REPEAT 
    DEC(save);
    IF fname[save] = "." THEN
     LocalFname.extPos := save + 1;
     LocalFname.extLen := L - LocalFname.extPos ;
   END; 
  UNTIL fname[save] = "/";
  LocalFname.namePos := save + 1;
  LocalFname.nameLen := LocalFname.extPos - LocalFname.namePos -1;
  (* now, directory part *)
  LocalFname.dirPos := 0;
  LocalFname.dirLen := save + 1;
  (* PROCEDURE Extract (source: ARRAY OF CHAR; startIndex, numberToExtract: CARDINAL; VAR destination: ARRAY OF CHAR);  *)
  Strings.Extract(fname,LocalFname.namePos, LocalFname.nameLen,name);
  Strings.Extract(fname,LocalFname.dirPos, LocalFname.dirLen,dir);
  Strings.Extract(fname,LocalFname.extPos, LocalFname.extLen,ext);
END Get;


PROCEDURE GetDir(fname: ARRAY OF CHAR; VAR dir: ARRAY OF CHAR);

VAR
  Dir, Name, Ext : ARRAY[0..256] OF CHAR;

BEGIN
  Get(fname,Dir,Name,Ext);
  Strings.Assign(Dir,dir);
END GetDir;

PROCEDURE GetName(fname: ARRAY OF CHAR; VAR name: ARRAY OF CHAR);

VAR
  Dir, Name, Ext : ARRAY[0..256] OF CHAR;
  
BEGIN
  Get(fname,Dir,Name,Ext);
  Strings.Assign(Name, name);
END GetName;

PROCEDURE GetExt(fname: ARRAY OF CHAR; VAR ext: ARRAY OF CHAR);

VAR
  Dir, Name, Ext : ARRAY[0..256] OF CHAR;
BEGIN
  Get(fname,Dir,Name,Ext);
  Strings.Assign(Ext,ext);
END GetExt;

END FileName.