Subversion Repositories Kolibri OS

(*

    Copyright 2021 Anton Krotov

    This file is part of CEdit.

    CEdit is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation, either version 3 of the License, or

    (at your option) any later version.

    CEdit is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with CEdit. If not, see .

*)

MODULE Encodings;

CONST

    CP866* = 0; W1251* = 1; UTF8* = 2; UTF8BOM* = 3; UTF16LE* = 4;

    UNDEF* = -1;

TYPE

    CP = ARRAY 256 OF INTEGER;

VAR

    cpW1251*, cp866*: CP;

    names*: ARRAY 4, 16 OF WCHAR;

    UNI*: ARRAY 65536, 2 OF INTEGER;

PROCEDURE InitCP (VAR cp: CP);

VAR

    i: INTEGER;

BEGIN

    FOR i := 0H TO 7FH DO

        cp[i] := i

    END

END InitCP;

PROCEDURE Init8 (VAR cp: CP; VAR n: INTEGER; a, b, c, d, e, f, g, h: INTEGER);

BEGIN

    cp[n] := a; INC(n);

    cp[n] := b; INC(n);

    cp[n] := c; INC(n);

    cp[n] := d; INC(n);

    cp[n] := e; INC(n);

    cp[n] := f; INC(n);

    cp[n] := g; INC(n);

    cp[n] := h; INC(n);

END Init8;

PROCEDURE InitW1251 (VAR cp: CP);

VAR

    n, i: INTEGER;

BEGIN

    n := 80H;

    Init8(cp, n, 0402H, 0403H, 201AH, 0453H, 201EH, 2026H, 2020H, 2021H);

    Init8(cp, n, 20ACH, 2030H, 0409H, 2039H, 040AH, 040CH, 040BH, 040FH);

    Init8(cp, n, 0452H, 2018H, 2019H, 201CH, 201DH, 2022H, 2013H, 2014H);

    Init8(cp, n, UNDEF, 2122H, 0459H, 203AH, 045AH, 045CH, 045BH, 045FH);

    Init8(cp, n, 00A0H, 040EH, 045EH, 0408H, 00A4H, 0490H, 00A6H, 00A7H);

    Init8(cp, n, 0401H, 00A9H, 0404H, 00ABH, 00ACH, 00ADH, 00AEH, 0407H);

    Init8(cp, n, 00B0H, 00B1H, 0406H, 0456H, 0491H, 00B5H, 00B6H, 00B7H);

    Init8(cp, n, 0451H, 2116H, 0454H, 00BBH, 0458H, 0405H, 0455H, 0457H);

    FOR i := 0410H TO 044FH DO

        cp[i - 350H] := i

    END;

    InitCP(cp)

END InitW1251;

PROCEDURE InitCP866 (VAR cp: CP);

VAR

    n, i: INTEGER;

BEGIN

   FOR i := 0410H TO 043FH DO

       cp[i - 0410H + 80H] := i

   END;

   FOR i := 0440H TO 044FH DO

       cp[i - 0440H + 0E0H] := i

   END;

   n := 0B0H;

   Init8(cp, n, 2591H, 2592H, 2593H, 2502H, 2524H, 2561H, 2562H, 2556H);

   Init8(cp, n, 2555H, 2563H, 2551H, 2557H, 255DH, 255CH, 255BH, 2510H);

   Init8(cp, n, 2514H, 2534H, 252CH, 251CH, 2500H, 253CH, 255EH, 255FH);

   Init8(cp, n, 255AH, 2554H, 2569H, 2566H, 2560H, 2550H, 256CH, 2567H);

   Init8(cp, n, 2568H, 2564H, 2565H, 2559H, 2558H, 2552H, 2553H, 256BH);

   Init8(cp, n, 256AH, 2518H, 250CH, 2588H, 2584H, 258CH, 2590H, 2580H);

   n := 0F0H;

   Init8(cp, n, 0401H, 0451H, 0404H, 0454H, 0407H, 0457H, 040EH, 045EH);

   Init8(cp, n, 00B0H, 2219H, 00B7H, 221AH, 2116H, 00A4H, 25A0H, 00A0H);

   InitCP(cp)

END InitCP866;

PROCEDURE setUNI;

VAR

    i: INTEGER;

BEGIN

    FOR i := 0 TO 65535 DO

        UNI[i, CP866] := UNDEF;

        UNI[i, W1251] := UNDEF;

    END;

    FOR i := 0 TO 255 DO

        IF cpW1251[i] # UNDEF THEN

            UNI[cpW1251[i], W1251] := i

        END;

        IF cp866[i] # UNDEF THEN

            UNI[cp866[i], CP866] := i

        END

    END

END setUNI;

BEGIN

    names[CP866]   := "CP866";

    names[W1251]   := "Windows-1251";

    names[UTF8]    := "UTF-8";

    names[UTF8BOM] := "UTF-8-BOM";

    InitW1251(cpW1251);

    InitCP866(cp866);

    setUNI

END Encodings.