19 lines
442 B
Modula-2
19 lines
442 B
Modula-2
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#
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IMPLEMENTATION MODULE TTY;
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FROM Unix IMPORT ioctl;
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FROM SYSTEM IMPORT ADR;
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PROCEDURE isatty(fd: INTEGER): BOOLEAN;
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VAR buf: ARRAY[1..100] OF CHAR;
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BEGIN
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#ifdef __USG
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RETURN ioctl(fd, INTEGER(ORD('T') * 256 + 1), ADR(buf)) >= 0;
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#else
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#ifdef __BSD4_2
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RETURN ioctl(fd, INTEGER(ORD('t') * 256 + 8 + 6*65536 + 40000000H), ADR(buf)) >= 0;
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#else
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RETURN ioctl(fd, INTEGER(ORD('t') * 256 + 8), ADR(buf)) >= 0;
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#endif
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#endif
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END isatty;
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END TTY.
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