29 lines
601 B
Modula-2
29 lines
601 B
Modula-2
MODULE PrEnv;
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FROM InOut IMPORT WriteString, WriteLn, ReadString, Done;
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FROM Arguments IMPORT GetEnv, Argv, Argc;
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VAR Buf: ARRAY[1..256] OF CHAR;
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i: INTEGER;
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BEGIN
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FOR i := 0 TO INTEGER(Argc) - 1 DO
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IF Argv(i, Buf) > SIZE(Buf) THEN
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WriteString("Argument too long");
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WriteLn;
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HALT;
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END;
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WriteString(Buf);
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WriteString(" ");
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END;
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WriteLn;
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LOOP
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WriteString("Environment name: ");
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ReadString(Buf);
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IF NOT Done THEN EXIT; END;
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IF GetEnv(Buf, Buf) = 0 THEN
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WriteString("No environment variable");
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ELSE
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WriteString(Buf);
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END;
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WriteLn;
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END;
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WriteLn;
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END PrEnv.
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