OpenDir

Open directory for reading

Declaration

Source position: line 0

Description

OpenDir opens the directory f, and returns a pdir pointer to a Dir record, which can be used to read the directory structure. If the directory cannot be opened, nil is returned.

Errors

Errors are returned in LinuxError.

See also

Example

Program Example35;

{ Program to demonstrate the
  OpenDir,ReadDir, SeekDir and TellDir functions. }

Uses oldlinux;

Var TheDir : PDir;
    ADirent : PDirent;
    Entry : Longint;

begin
  TheDir:=OpenDir('./.');
  Repeat
    Entry:=TellDir(TheDir);
    ADirent:=ReadDir (TheDir);
    If ADirent<>Nil then
      With ADirent^ do
        begin
        Writeln ('Entry No : ',Entry);
        Writeln ('Inode    : ',ino);
        Writeln ('Offset   : ',off);
        Writeln ('Reclen   : ',reclen);
        Writeln ('Name     : ',pchar(@name[0]));
        end;
  Until ADirent=Nil;
  Repeat
    Write ('Entry No. you would like to see again (-1 to stop): ');
    ReadLn (Entry);
    If Entry<>-1 then
      begin
      SeekDir (TheDir,Entry);
      ADirent:=ReadDir (TheDir);
      If ADirent<>Nil then
        With ADirent^ do
          begin
          Writeln ('Entry No : ',Entry);
          Writeln ('Inode    : ',ino);
          Writeln ('Offset   : ',off);
          Writeln ('Reclen   : ',reclen);
          Writeln ('Name     : ',pchar(@name[0]));
          end;
    end;
  Until Entry=-1;
  CloseDir (TheDir);
end.

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