(* Release 3.10 *)
(*-------------------------------------------------------------------------*
*                                                                          *
*  FILENAME.MOD - COMMS Toolkit filename parser                            *
*                                                                          *
*  COPYRIGHT (C) 1990..1992 Clarion Software Corporation.                  *
*  All Rights Reserved                                                     *
*                                                                          *
*--------------------------------------------------------------------------*)

IMPLEMENTATION MODULE Filenames;
  IMPORT Lib,Str;

  PROCEDURE ParseFilename(f:ARRAY OF CHAR;VAR drive,path,name,ext:ARRAY OF CHAR):BOOLEAN;
    VAR
      Lnth,pos,NameLnth : CARDINAL;
    BEGIN
      drive[0]:=0C;
      path[0]:=0C;
      name[0]:=0C;
      ext[0]:=0C;
      Lnth := Str.Length(f);
      IF Lnth=0 THEN
        RETURN FALSE;
      END;
      pos := Lnth-Lib.ScanL(ADR(f[Lnth-1]),Lnth,':');
      IF pos>0 THEN
        IF pos<>2 THEN
          RETURN(FALSE);
        END;
        drive[0] := CAP(f[0]);
        drive[1] := 0C;
        DEC(Lnth,2);
        Lib.Move(ADR(f[2]),ADR(f),Lnth+1)
      ELSE
        drive[0] := 0C;
      END;
      IF Lnth=0 THEN
        RETURN(FALSE);
      END;
      pos := Lnth-Lib.ScanL(ADR(f[Lnth-1]),Lnth,'\');
      IF pos>0 THEN
        Lib.Move(ADR(f),ADR(path),pos);
        DEC(Lnth,pos);
        Lib.Move(ADR(f[pos]),ADR(f),Lnth+1);
      END;
      path[pos] := 0C;
      IF Lnth=0 THEN
        RETURN(FALSE);
      END;
      pos := Lnth-Lib.ScanL(ADR(f[Lnth-1]),Lnth,'.');
      IF pos>0 THEN
        IF pos=1 THEN
          RETURN(FALSE);
        END;
        IF pos-1>8 THEN
          NameLnth:=8;
        ELSE
          NameLnth:=pos-1;
        END;
        Lib.Move(ADR(f),ADR(name),NameLnth);
        name[NameLnth]:=0C;
        DEC(Lnth,pos);
        Lib.Move(ADR(f[pos]),ADR(f),Lnth+1);
        Lib.Move(ADR(f),ADR(ext),Lnth+1)
      ELSE
        IF Lnth+1>8 THEN
          NameLnth:=8;
        ELSE
          NameLnth:=Lnth+1;
        END;
        Lib.Move(ADR(f),ADR(name),NameLnth);
        name[Lnth]:=0C;
        ext[0] := 0C;
      END;
      RETURN(TRUE);
    END ParseFilename;

(*.................................................*)

  PROCEDURE MakeFilename(drive,path,name,ext:ARRAY OF CHAR;VAR f:ARRAY OF CHAR);
    VAR
      Lnth,LnthDest     : CARDINAL;
    BEGIN
      f[0] := 0C;
      IF drive[0]<>0C THEN
        f[0]:=drive[0];
        f[1]:=':'; f[2]:=0C;
      END;
      Str.Concat(f,f,path);
      IF path[0]<>0C THEN
        Lnth := Str.Length(f);
        IF f[Lnth-1]<>'\' THEN
          f[Lnth]:='\';
          f[Lnth+1]:=0C;
        END;
      END;
      Lnth := Str.Length(name);
      IF Lnth>8 THEN
        name[8]:=0C;
      END;
      Str.Concat(f,f,name);
      IF ext[0]<>0C THEN
        Lnth := Str.Length(f);
        IF ext[0]<>'.' THEN
          f[Lnth]:='.';
          f[Lnth+1]:=0C;
        END;
        Str.Concat(f,f,ext);
      END;
    END MakeFilename;

  END Filenames.