Examine

Examine a directory or file associated with a lock

Declaration

Source position: amigados.pas line 1630

Arguments

Description

Examine() fills in information in the TFileInfoBlock concerning the file or directory associated with the lock. This information includes the name, size, creation date and whether it is a file or directory. FileInfoBlock must be longword aligned. Examine() gives a return code of False if it fails.

You may make a local copy of the TFileInfoBlock, as long as it is never passed to ExNext().

So, follow these steps to examine a directory:

1. Pass a Lock and a FileInfoBlock to Examine(). The lock must be on the directory you wish to examine.
2. Pass ExNext() the same lock and TFileInfoBlock.
3. Do something with the information returned in the TFileInfoBlock. Note that the fib_DirEntryType field is positive for directories, negative for files.
4. Keep calling ExNext() until it returns False. Check IoErr() to ensure that the reason for failure was ERROR_NO_MORE_ENTRIES.

See also

Example

program ExamineTest;
uses
  AmigaDos;
procedure CheckDir(ALock: BPTR);
var
  FIB: PFileInfoBlock;
begin
  FIB := AllocDosObject(DOS_FIB, nil);
  if Assigned(FIB) then
  begin
    if Examine(ALock, FIB) <> 0 then
    begin
      repeat
        writeln(FIB^.fib_FileName);
      until ExNext(ALock, FIB) = 0;
    end;
    if IOErr() = ERROR_NO_MORE_ENTRIES then
      writeln('nothing more found')
    else
      writeln('Something went wrong ', IOErr);
    FreeDosObject(DOS_FIB, FIB);
  end;
end;
var
  RAMLock: BPTR;
begin
  RAMLock := Lock('RAM:', SHARED_LOCK);
  CheckDir(RAMLock);
  unlock(RAMLock);
end.