forked from KolibriOS/kolibrios
169 lines
3.7 KiB
Plaintext
169 lines
3.7 KiB
Plaintext
(*
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Copyright 2021 Anton Krotov
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This file is part of CEdit.
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CEdit 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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CEdit 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 CEdit. If not, see <http://www.gnu.org/licenses/>.
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*)
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MODULE Clipboard;
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IMPORT SYSTEM, K := KOSAPI, E := Encodings, Lines;
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CONST
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TTEXT = 0;
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lenEOL* = 2;
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TYPE
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tBuffer* = POINTER TO RECORD
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dataPtr*: INTEGER;
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pos: INTEGER
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END;
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PROCEDURE free (ptr: INTEGER);
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BEGIN
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ptr := K.free(ptr)
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END free;
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PROCEDURE bufSize* (buffer: tBuffer): INTEGER;
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RETURN buffer.pos - buffer.dataPtr
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END bufSize;
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PROCEDURE put* (buffer: tBuffer);
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VAR
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a, cnt, size: INTEGER;
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ptr, pchar: INTEGER;
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wch: WCHAR;
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BEGIN
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cnt := bufSize(buffer) DIV 2;
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size := cnt + 12;
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a := K.malloc(size);
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ASSERT(a # 0);
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SYSTEM.PUT32(a, size);
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SYSTEM.PUT32(a + 4, TTEXT);
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SYSTEM.PUT32(a + 8, 1);
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pchar := a + 12;
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ptr := buffer.dataPtr;
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WHILE cnt > 0 DO
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SYSTEM.GET(ptr, wch);
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SYSTEM.PUT(pchar, CHR(E.UNI[ORD(wch), E.CP866] MOD 256));
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INC(pchar);
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INC(ptr, 2);
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DEC(cnt)
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END;
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K.sysfunc2(54, 3);
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K.sysfunc4(54, 2, size, a)
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END put;
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PROCEDURE create* (bufSize: INTEGER): tBuffer;
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VAR
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res: tBuffer;
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BEGIN
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NEW(res);
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res.dataPtr := K.malloc(bufSize*SYSTEM.SIZE(WCHAR) + 4096);
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ASSERT(res.dataPtr # 0);
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res.pos := res.dataPtr
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RETURN res
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END create;
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PROCEDURE destroy* (VAR buffer: tBuffer);
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BEGIN
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IF buffer # NIL THEN
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IF buffer.dataPtr # 0 THEN
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free(buffer.dataPtr)
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END;
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DISPOSE(buffer)
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END
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END destroy;
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PROCEDURE append* (buffer: tBuffer; line: Lines.tLine; first, last: INTEGER);
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VAR
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strSize: INTEGER;
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BEGIN
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strSize := (last - first + 1)*SYSTEM.SIZE(WCHAR);
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IF strSize > 0 THEN
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SYSTEM.MOVE(Lines.getPChar(line, first), buffer.pos, strSize);
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INC(buffer.pos, strSize)
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END
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END append;
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PROCEDURE appends* (buffer: tBuffer; s: ARRAY OF WCHAR; first, last: INTEGER);
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VAR
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strSize: INTEGER;
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BEGIN
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strSize := (last - first + 1)*SYSTEM.SIZE(WCHAR);
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IF strSize > 0 THEN
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SYSTEM.MOVE(SYSTEM.ADR(s[first]), buffer.pos, strSize);
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INC(buffer.pos, strSize)
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END
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END appends;
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PROCEDURE eol* (buffer: tBuffer);
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VAR
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s: ARRAY 2 OF WCHAR;
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BEGIN
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s[0] := 0DX; s[1] := 0AX;
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appends(buffer, s, 0, 1)
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END eol;
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PROCEDURE eot* (buffer: tBuffer);
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END eot;
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PROCEDURE available* (): BOOLEAN;
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VAR
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ptr: INTEGER;
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n, size, typ, x: INTEGER;
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res: BOOLEAN;
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BEGIN
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res := FALSE;
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n := K.sysfunc2(54, 0);
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IF n > 0 THEN
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ptr := K.sysfunc3(54, 1, n - 1);
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SYSTEM.GET32(ptr, size);
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SYSTEM.GET32(ptr + 4, typ);
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SYSTEM.GET(ptr + 8, x);
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res := (typ = TTEXT) & (x = 1);
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free(ptr)
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END
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RETURN res
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END available;
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PROCEDURE get* (VAR cnt: INTEGER): INTEGER;
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VAR
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ptr: INTEGER;
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BEGIN
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ptr := 0;
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cnt := 0;
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IF available() THEN
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ptr := K.sysfunc3(54, 1, K.sysfunc2(54, 0) - 1);
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SYSTEM.GET32(ptr, cnt);
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DEC(cnt, 12);
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INC(ptr, 12)
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END
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RETURN ptr
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END get;
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END Clipboard. |