Info-Mac 3/Info_Mac_1994-01.iso/Development/Source/IRC client Source/ircle sources/IRCNotify.p

Text File | 1993-06-05 | 4.1 KB | 199 lines | [TEXT/PJMM]

{    ircle - Internet Relay Chat client    }
{    File: IRCNotify    }
{    Copyright © 1992 Olaf Titz ([e-mail])    }

{    This program 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 2 of the License, or    }
{    (at your option) any later version.    }

{    This program 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 this program; if not, write to the Free Software    }
{    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.    }

unit IRCNotify;
{ Deals with the /notify command }

interface

uses
    TCPTypes, TCPStuff, TCPConnections,{}
    Coroutines, ApplBase, MsgWindows, InputLine, {}
    IRCGlobals, IRCaux, IRCPreferences, IRCChannels;

procedure InitIRCNotify;
{ Startup }

procedure DoNotify (var s: string);
{ Processes the NOTIFY command }

procedure IsonReply (var s: string);
{ Processes ISON replies from server }

procedure OneNotify (var s: string; ison: boolean);
{ Processes explicit signon/off messages }

procedure RunNotify;
{ Does periodic queries }

implementation

var
    doit, pending: boolean;
    themap: set of byte;
    noti: Handle;

procedure InitIRCNotify;
    begin
        doit := false;
        pending := false;
        themap := [];
        noti := NewHandle(0);
    end;

procedure RunNotify0;
    var
        s: string;
        n: integer;
    begin
        if serverStatus = 0 then begin
            n := GetHandleSize(noti);
            BlockMove(noti^, @s[1], n);
            s[0] := chr(n);
            insert('ISON ', s, 1);
            PutLine(s);
        end;
    end;



procedure DoNotify (var s: string);
    var
        i, n: integer;
        j: byte;
        olddoit: boolean;
        p: string;
    begin
        if s[0] = chr(0) then begin
            pending := false;
            RunNotify0;
        end;
        while s[0] <> chr(0) do begin
            NextArg(s, p);
            insert(' ', p, 255);
            if p[1] = '-' then begin
                n := length(p) - 1;
                i := Munger(noti, 0, @p[2], n, Ptr(1), 0);
                if i > 0 then begin
                    for j := i to 255 - n do
                        if j + n in themap then
                            themap := themap + [j]
                        else
                            themap := themap - [j];
                    for j := 255 - n + 1 to 255 do
                        themap := themap - [j];
                end
            end
            else begin
                if length(p) + GetHandleSize(noti) < 250 then
                    i := PtrAndHand(@p[1], noti, length(p));
            end;
        end;
        pending := false;
        i := GetHandleSize(noti);
        olddoit := doit;
        doit := (i > 0);
        if doit then begin
            BlockMove(noti^, @s[1], i);
            s[0] := chr(i);
            insert('*** Notify List: ', s, 1);
            LineMsg(s);
            if not olddoit then
                RunNotify;
        end;
    end;


procedure onestring (i: integer; var s: string);
    var
        n: integer;
        no: CharsHandle;
    begin
        n := GetHandleSize(noti);
        if i > n then
            s := ''
        else begin
            no := CharsHandle(noti);
            BlockMove(@no^^[i], @s[1], n - i + 1);
            s[0] := chr(n - i + 1);
            i := pos(' ', s);
            if i > 0 then
                s[0] := chr(i - 1);
        end;
    end;


procedure OneNotify (var s: string; ison: boolean);
    var
        i: integer;
    begin
        i := Munger(noti, 0, @s[1], length(s), nil, 0);
        if i >= 0 then begin
            if ison then
                themap := themap + [i]
            else
                themap := themap - [i];
        end;
    end;


procedure IsonReply (var s: string);
    var
        p: string;
        i: integer;
        j: byte;
        newmap: set of byte;
    begin
        if pending then begin
            newmap := [];
            while s[0] > chr(0) do begin
                NextArg(s, p);
                i := Munger(noti, 0, @p[1], length(p), nil, 0);
                if i >= 0 then
                    newmap := newmap + [i];
            end;
            for j := 0 to 255 do
                if (j in themap) and (not (j in newmap)) then begin
                    onestring(j, p);
                    insert('*** Signoff: ', p, 1);
                    Message(p);
                end
                else if (not (j in themap)) and (j in newmap) then begin
                    onestring(j, p);
                    insert('*** Signon: ', p, 1);
                    Message(p);
                end;
            themap := newmap;
            pending := false
        end
        else begin
            insert('*** Signed on: ', s, 1);
            LineMsg(s)
        end
    end;


procedure RunNotify; { Does periodic queries }
    begin
        if doit and (not pending) then begin
            pending := true;
            RunNotify0
        end
    end;

end.