RosettaCodeData/Task/Input-loop/Modula-2/input-loop.mod2

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Plaintext

PROCEDURE ReadName (VAR str : ARRAY OF CHAR);
VAR n : CARDINAL;
ch, endch : CHAR;
BEGIN
REPEAT
InOut.Read (ch);
Exhausted := InOut.EOF ();
IF Exhausted THEN RETURN END
UNTIL ch > ' '; (* Eliminate whitespace *)
IF ch = '[' THEN endch := ']' ELSE endch := ch END;
n := 0;
REPEAT
InOut.Read (ch);
Exhausted := InOut.EOF ();
IF Exhausted THEN RETURN END;
IF n <= HIGH (str) THEN str [n] := ch ELSE ch := endch END;
INC (n)
UNTIL ch = endch;
IF n <= HIGH (str) THEN str [n-1] := 0C END;
lastCh := ch
END ReadName;