Category : Pascal Source Code
Archive   : MAPFILES.ZIP
Filename : MAPFILES.PAS

 
Output of file : MAPFILES.PAS contained in archive : MAPFILES.ZIP
{****************************************************************************}
{* MAPFILES - Utility to show open files by all programs in memory *}
{* by Richard S. Sadowsky *}
{* Version 1.0 2/9/91 *}
{* *}
{* This program requires DOS 3.0 or greater. *}
{* This program writes to standard output, so it may be redirected. *}
{****************************************************************************}
{$V-,R-,S-}
program MapFiles;
uses Dos, UnDocDos;

function UpperCaseSt(S : String) : String;
{-Convert S to all uppercase characters and return as function result}
var
I : Byte;
begin
for I := 1 to Length(S) do
S[I] := UpCase(S[I]);
UpperCaseSt := S;
end;

procedure DisplayFiles(M : McbPtr);
{-Display the program name, and its open files}
var
I : Byte;
PSP : PspPtr;
ProgName : String;
Name : String15;
Success : Boolean;
NumFiles : Byte;
begin
{check to see if this MCB is a program's PSP, and if so, make sure it isn't
the PSP of this program}
if IsPsp(M) and (M^.mcbOwnerPSP <> PrefixSeg) then begin
{create a pointer to the program segment prefix}
PSP := Ptr(M^.mcbOwnerPSP, 0);
{get program name from environment}
ProgName := UpperCaseSt(ProgramName(M^.mcbOwnerPSP));
if ProgName = '' then
ProgName := 'n/a';
WriteLn('Program name: ', ProgName);
NumFiles := 0;
with PSP^ do
for I := 0 to NumHandles-1 do begin
Name := NameFromHandle(SegOfs(PSP).S, I, Success);
if Success then begin
WriteLn(' handle ', I:2,' ',
Copy(Name, 1, 8), ' ',
Copy(Name, 9, 3));
Inc(NumFiles);
end;
end;
if NumFiles = 0 then
WriteLn(' no open files');
end;
end;

{$F+}
procedure McbWalker(M : McbPtr);
{-Gets called for each MCB in the MCB chain. Calls DisplayFiles.}
begin
if M = Nil then begin
WriteLn('invalid MCB type');
Exit;
end;
DisplayFiles(M);
end;

begin {main}
WriteLn('MapFiles 1.0 by Richard Sadowsky');
if Lo(DosVersion) < 3 then begin
WriteLn;
WriteLn('This program requires DOS 3.0 or greater');
Halt(1);
end;
WalkMcbChain(GetFirstMcb, McbWalker);
end. {main}


  3 Responses to “Category : Pascal Source Code
Archive   : MAPFILES.ZIP
Filename : MAPFILES.PAS

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/