94 lines
2.2 KiB
Plaintext
94 lines
2.2 KiB
Plaintext
program Tape;
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{$MODE OBJFPC}
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uses SysUtils;
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type
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//Tape file path and reset state
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TapeState = record
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Path: shortstring;
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Reset: boolean;
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Pos: integer;
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end;
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var
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Reader, Punch: TapeState; //States of the reader and punch
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State: file of TapeState; //File storing the states of the reader and punch
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DoRead, DoPunch: boolean; //Whether to reset the reader or the punch
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begin
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//Check whether to set the reader, the punch, or both
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if ParamCount <> 1 then begin
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writeln ('Usage: tape reader/punch/both');
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halt;
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end;
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if ParamStr (1) = 'reader' then begin
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DoRead := true;
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DoPunch := false;
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end
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else if ParamStr (1) = 'punch' then begin
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DoRead := false;
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DoPunch := true;
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end
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else if ParamStr (1) = 'both' then begin
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DoRead := true;
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DoPunch := true;
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end
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else begin
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writeln ('Usage: tape reader/punch/both');
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halt;
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end;
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//Assign the state file
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assign (State, ExpandFileName ('~/.tapes.thingamajig'));
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//Read existing state if any
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if FileExists (ExpandFileName ('~/.tapes.thingamajig')) then begin
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try
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reset (State);
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read (State, Reader);
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read (State, Punch);
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close (State);
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except
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end;
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end
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//Or else assign a default state
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else begin
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Reader.Path := '';
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Reader.Reset := true;
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Reader.Pos := 0;
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Punch.Path := '';
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Punch.Reset := true;
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Punch.Pos := 0;
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end;
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//Input the files to be read from or punched to
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if DoRead then begin
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write ('Reader: ');
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readln (Reader.Path);
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Reader.Path := ExpandFileName (Reader.Path);
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Reader.Reset := true;
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Reader.Pos := 0;
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end;
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if DoPunch then begin
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write ('Punch: ');
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readln (Punch.Path);
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Punch.Path := ExpandFileName (Punch.Path);
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Punch.Reset := true;
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Punch.Pos := 0;
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end;
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//Write the state
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try
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rewrite (State);
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write (State, Reader);
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write (State, Punch);
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close (State);
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except
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writeln ('Error: could not set the tape(s)');
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end;
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end.
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