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Text File | 1988-04-18 | 1.4 KB | 68 lines | [TEXT/MPS ] |
- (*
- SPortBufferSize() -- Returns the size of the current input buffer, or zero if the default buffer is
- begin used.
-
- To compile and link this file using Macintosh Programmer's Workshop,
-
- pascal -w SPortBufferSize.p
- link -m ENTRYPOINT -o HyperCommands -rt XFCN=7034 -sn Main=SPortBufferSize ∂
- SPortBufferSize.p.o "{MPW}"Libraries:interface.o
-
- © Copyright 1987,88 by Apple Computer, Inc.
-
- Initial coding 9/87 by Harry R. Chesley.
- *)
-
- {$R-}
-
- {$S SPortBufferSize } { Segment name must be the same as the command name. }
-
- unit DummyUnit;
-
- interface
-
- uses MemTypes, QuickDraw, OSIntf, HyperXCmd;
-
- procedure EntryPoint(paramPtr: XCmdPtr);
-
- implementation
-
- type
-
- Str31 = String[31];
-
- procedure SPortBufferSize(paramPtr: XCmdPtr); forward;
-
- procedure EntryPoint(paramPtr: XCmdPtr);
-
- begin
- SPortBufferSize(paramPtr);
- end;
-
- procedure SPortBufferSize(paramPtr: XCmdPtr);
-
- var l: longInt;
-
- {$I XCmdGlue.inc}
-
- procedure Fail(errMsg: Str255); { set theResult and quit }
- begin
- paramPtr^.returnValue := PasToZero(errMsg);
- exit(SPortBufferSize);
- end;
-
- {$I SPortUtil.inc}
-
- begin
- if paramPtr^.paramCount <> 0 then Fail('parameter count is not 0');
-
- SetUpSPortGlobals;
- EnsureOpenPort;
-
- { Find and return the size of the current buffer (or zero if the default buffer is being used). }
- if ThisSPort.inputBuffer = nil then l := 0
- else l := GetPtrSize(ThisSPort.inputBuffer);
- paramPtr^.returnValue := PasToZero(LongToStr(l))
- end;
- end.
-