forked from KolibriOS/kolibrios
85 lines
2.0 KiB
Plaintext
85 lines
2.0 KiB
Plaintext
(*
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Copyright 2016 Anton Krotov
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This file is part of fb2read.
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fb2read is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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fb2read is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with fb2read. If not, see <http://www.gnu.org/licenses/>.
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*)
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MODULE Conv;
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IMPORT sys := SYSTEM, Encode;
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VAR table: ARRAY 65536 OF CHAR;
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PROCEDURE GetUtf8 (str: INTEGER; VAR val, idx: INTEGER);
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VAR ch: CHAR;
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BEGIN
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sys.GET(str + idx, ch); INC(idx);
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IF ch < 80X THEN
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val := ORD(ch)
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ELSIF ch < 0E0X THEN
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val := ORD(ch) - 192;
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sys.GET(str + idx, ch); INC(idx);
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val := val * 64 + ORD(ch) - 128
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ELSE
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val := ORD(ch) - 224;
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sys.GET(str + idx, ch); INC(idx); val := val * 64 + ORD(ch) - 128;
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sys.GET(str + idx, ch); INC(idx); val := val * 64 + ORD(ch) - 128
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END
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END GetUtf8;
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PROCEDURE convert*(adr, adr2: INTEGER; len: INTEGER);
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VAR val, idx: INTEGER;
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BEGIN
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idx := 0;
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WHILE len > 0 DO
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GetUtf8(adr, val, idx);
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IF (0 <= val) & (val < LEN(table)) THEN
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sys.PUT(adr2, table[val])
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ELSE
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sys.PUT(adr2, "?")
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END;
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INC(adr2);
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DEC(len)
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END
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END convert;
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PROCEDURE utf8to1251(code: INTEGER): CHAR;
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VAR res: CHAR; i: INTEGER;
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BEGIN
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res := "?";
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i := 0;
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WHILE i <= 255 DO
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IF Encode.W1251[i].code = code THEN
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res := CHR(i);
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i := 255
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END;
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INC(i)
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END
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RETURN res
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END utf8to1251;
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PROCEDURE main;
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VAR i: INTEGER;
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BEGIN
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FOR i := 0 TO LEN(table) - 1 DO
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table[i] := utf8to1251(i)
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END
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END main;
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BEGIN
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main
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END Conv.
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