forked from KolibriOS/kolibrios
101 lines
1.9 KiB
Plaintext
101 lines
1.9 KiB
Plaintext
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(*
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BSD 2-Clause License
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Copyright (c) 2019-2020, Anton Krotov
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All rights reserved.
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*)
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MODULE Args;
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IMPORT SYSTEM, WINAPI;
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CONST
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MAX_PARAM = 1024;
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VAR
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Params: ARRAY MAX_PARAM, 2 OF INTEGER;
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argc*: INTEGER;
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PROCEDURE GetChar (adr: INTEGER): CHAR;
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VAR
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res: CHAR;
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BEGIN
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SYSTEM.GET(adr, res)
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RETURN res
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END GetChar;
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PROCEDURE ParamParse;
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VAR
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p, count, cond: INTEGER;
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c: CHAR;
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PROCEDURE ChangeCond (A, B, C: INTEGER; VAR cond: INTEGER; c: CHAR): INTEGER;
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BEGIN
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IF (c <= 20X) & (c # 0X) THEN
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cond := A
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ELSIF c = 22X THEN
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cond := B
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ELSIF c = 0X THEN
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cond := 6
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ELSE
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cond := C
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END
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RETURN cond
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END ChangeCond;
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BEGIN
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p := WINAPI.GetCommandLineA();
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cond := 0;
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count := 0;
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WHILE (count < MAX_PARAM) & (cond # 6) DO
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c := GetChar(p);
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CASE cond OF
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|0: IF ChangeCond(0, 4, 1, cond, c) = 1 THEN Params[count, 0] := p END
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|1: IF ChangeCond(0, 3, 1, cond, c) IN {0, 6} THEN Params[count, 1] := p - 1; INC(count) END
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|3: IF ChangeCond(3, 1, 3, cond, c) = 6 THEN Params[count, 1] := p - 1; INC(count) END
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|4: IF ChangeCond(5, 0, 5, cond, c) = 5 THEN Params[count, 0] := p END
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|5: IF ChangeCond(5, 1, 5, cond, c) = 6 THEN Params[count, 1] := p - 1; INC(count) END
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|6:
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END;
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INC(p)
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END;
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argc := count
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END ParamParse;
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PROCEDURE GetArg* (n: INTEGER; VAR s: ARRAY OF CHAR);
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VAR
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i, j, len: INTEGER;
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c: CHAR;
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BEGIN
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j := 0;
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IF n < argc THEN
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i := Params[n, 0];
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len := LEN(s) - 1;
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WHILE (j < len) & (i <= Params[n, 1]) DO
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c := GetChar(i);
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IF c # '"' THEN
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s[j] := c;
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INC(j)
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END;
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INC(i)
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END
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END;
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s[j] := 0X
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END GetArg;
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BEGIN
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ParamParse
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END Args.
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