Subversion Repositories Kolibri OS

(*

    BSD 2-Clause License

    Copyright (c) 2018-2019, Anton Krotov

    All rights reserved.

*)

MODULE HOST;

IMPORT SYSTEM, RTL;

CONST

    slash* = "\";

    OS* = "WINDOWS";

    bit_depth* = RTL.bit_depth;

    maxint* = RTL.maxint;

    minint* = RTL.minint;

    MAX_PARAM = 1024;

    OFS_MAXPATHNAME = 128;

TYPE

    POverlapped = POINTER TO OVERLAPPED;

    OVERLAPPED = RECORD

        Internal:       INTEGER;

        InternalHigh:   INTEGER;

        Offset:         INTEGER;

        OffsetHigh:     INTEGER;

        hEvent:         INTEGER

    END;

    OFSTRUCT = RECORD

        cBytes:         CHAR;

        fFixedDisk:     CHAR;

        nErrCode:       WCHAR;

        Reserved1:      WCHAR;

        Reserved2:      WCHAR;

        szPathName:     ARRAY OFS_MAXPATHNAME OF CHAR

    END;

    PSecurityAttributes = POINTER TO TSecurityAttributes;

    TSecurityAttributes = RECORD

        nLength:               INTEGER;

        lpSecurityDescriptor:  INTEGER;

        bInheritHandle:        INTEGER

    END;

    TSystemTime = RECORD

        Year,

        Month,

        DayOfWeek,

        Day,

        Hour,

        Min,

        Sec,

        MSec:  WCHAR

    END;

VAR

    hConsoleOutput: INTEGER;

    Params: ARRAY MAX_PARAM, 2 OF INTEGER;

    argc: INTEGER;

    eol*: ARRAY 3 OF CHAR;

PROCEDURE [windows-, "kernel32.dll", "GetTickCount"]

    _GetTickCount (): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "GetStdHandle"]

    _GetStdHandle (nStdHandle: INTEGER): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "GetCommandLineA"]

    _GetCommandLine (): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "ReadFile"]

    _ReadFile (hFile, Buffer, nNumberOfBytesToRW: INTEGER; VAR NumberOfBytesRW: INTEGER; lpOverlapped: POverlapped): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "WriteFile"]

    _WriteFile (hFile, Buffer, nNumberOfBytesToRW: INTEGER; VAR NumberOfBytesRW: INTEGER; lpOverlapped: POverlapped): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "CloseHandle"]

    _CloseHandle (hObject: INTEGER): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "CreateFileA"]

    _CreateFile (

        lpFileName, dwDesiredAccess, dwShareMode: INTEGER;

        lpSecurityAttributes: PSecurityAttributes;

        dwCreationDisposition, dwFlagsAndAttributes,

        hTemplateFile: INTEGER): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "OpenFile"]

    _OpenFile (lpFileName: INTEGER; lpReOpenBuff: OFSTRUCT; uStyle: INTEGER): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "GetCurrentDirectoryA"]

    _GetCurrentDirectory (nBufferLength, lpBuffer: INTEGER): INTEGER;

PROCEDURE [windows-, "kernel32.dll", "GetSystemTime"]

    _GetSystemTime (T: TSystemTime);

PROCEDURE [windows-, "kernel32.dll", "ExitProcess"]

    _ExitProcess (code: INTEGER);

PROCEDURE ExitProcess* (code: INTEGER);

BEGIN

    _ExitProcess(code)

END ExitProcess;

PROCEDURE GetCurrentDirectory* (VAR path: ARRAY OF CHAR);

VAR

    n: INTEGER;

BEGIN

    n := _GetCurrentDirectory(LEN(path), SYSTEM.ADR(path[0]));

    path[n] := slash;

    path[n + 1] := 0X

END GetCurrentDirectory;

PROCEDURE GetChar (adr: INTEGER): CHAR;

VAR

    res: CHAR;

BEGIN

    SYSTEM.GET(adr, res)

    RETURN res

END GetChar;

PROCEDURE ParamParse;

VAR

    p, count, cond: INTEGER;

    c: CHAR;

    PROCEDURE ChangeCond (A, B, C: INTEGER; VAR cond: INTEGER; c: CHAR);

    BEGIN

        IF (c <= 20X) & (c # 0X) THEN

            cond := A

        ELSIF c = 22X THEN

            cond := B

        ELSIF c = 0X THEN

            cond := 6

        ELSE

            cond := C

        END

    END ChangeCond;

BEGIN

    p := _GetCommandLine();

    cond := 0;

    count := 0;

    WHILE (count < MAX_PARAM) & (cond # 6) DO

        c := GetChar(p);

        CASE cond OF

        |0: ChangeCond(0, 4, 1, cond, c); IF cond = 1 THEN Params[count, 0] := p END

        |1: ChangeCond(0, 3, 1, cond, c); IF cond IN {0, 6} THEN Params[count, 1] := p - 1; INC(count) END

        |3: ChangeCond(3, 1, 3, cond, c); IF cond = 6 THEN Params[count, 1] := p - 1; INC(count) END

        |4: ChangeCond(5, 0, 5, cond, c); IF cond = 5 THEN Params[count, 0] := p END

        |5: ChangeCond(5, 1, 5, cond, c); IF cond = 6 THEN Params[count, 1] := p - 1; INC(count) END

        |6:

        END;

        INC(p)

    END;

    argc := count

END ParamParse;

PROCEDURE GetArg* (n: INTEGER; VAR s: ARRAY OF CHAR);

VAR

    i, j, len: INTEGER;

    c: CHAR;

BEGIN

    j := 0;

    IF n < argc THEN

        len := LEN(s) - 1;

        i := Params[n, 0];

        WHILE (j < len) & (i <= Params[n, 1]) DO

            c := GetChar(i);

            IF c # 22X THEN

                s[j] := c;

                INC(j)

            END;

            INC(i)

        END

    END;

    s[j] := 0X

END GetArg;

PROCEDURE FileRead* (F: INTEGER; VAR Buffer: ARRAY OF CHAR; bytes: INTEGER): INTEGER;

VAR

    res, n: INTEGER;

BEGIN

    IF _ReadFile(F, SYSTEM.ADR(Buffer[0]), bytes, n, NIL) = 0 THEN

        res := -1

    ELSE

        res := n

    END

    RETURN res

END FileRead;