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{RTF related code}
unit MyRTF;
{$include compilers.inc}
interface
uses windows;
procedure SendRTF(wnd:HWND;txt:PWideChar;isUnicode:Boolean;CP:integer=CP_ACP);
implementation
uses richedit,common,messages{,m_api};
const
RTFBufferSize = 16384;
const
CTableHdr = '{\colortbl';
const
(*
ColorTable = '{\colortbl;'+
'\red255\green255\blue255;'+
'\red0\green0\blue0;'+
'\red0\green0\blue127;'+
'\red0\green147\blue0;'+
'\red255\green0\blue0;'+
'\red127\green0\blue0;'+
'\red156\green0\blue156;'+
'\red252\green127\blue0;'+
'\red255\green255\blue0;'+
'\red0\green252\blue0;'+
'\red0\green147\blue147;'+
'\red0\green255\blue255;'+
'\red0\green0\blue252;'+
'\red255\green0\blue255;'+
'\red127\green127\blue127;'+
'\red210\green210\blue210;}';
*)
ColorTableD =
'\red255\green255\blue255;'+
'\red0\green0\blue0;'+
'\red0\green0\blue127;'+
'\red0\green147\blue0;'+
'\red255\green0\blue0;'+
'\red127\green0\blue0;'+
'\red156\green0\blue156;'+
'\red252\green127\blue0;'+
'\red255\green255\blue0;'+
'\red0\green252\blue0;'+
'\red0\green147\blue147;'+
'\red0\green255\blue255;'+
'\red0\green0\blue252;'+
'\red255\green0\blue255;'+
'\red127\green127\blue127;'+
'\red210\green210\blue210;';
function StreamWriteCallback(dwCookie:dword_ptr;pbBuff:PAnsiChar;cb:long;var pcb:long):dword;stdcall;
begin
pcb:=StrLen(PAnsiChar(dwCookie));
if cb<pcb then pcb:=cb;
move(PAnsiChar(dwCookie)^,pbBuff^,pcb);
result:=0;
end;
procedure WriteRTF(wnd:HWND;const pszText:PAnsiChar);
var
stream:TEDITSTREAM;
begin
FillChar(stream,SizeOf(stream),0);
stream.pfnCallback:=@StreamWriteCallback;
stream.dwCookie :=dword_ptr(pszText);
SendMessage(wnd,EM_STREAMIN,SF_RTF or SFF_PLAINRTF or SFF_SELECTION,lparam(@stream));
end;
function StreamReadCallback(dwCookie:dword_ptr;pbBuff:PAnsiChar;cb:long;var pcb:long):dword;stdcall;
type
pdword_ptr=^dword_ptr;
begin
pcb:=cb;
move(pbBuff^,PAnsiChar(pdword_ptr(dwCookie)^)^,pcb);
// PAnsiChar(pdword(dwCookie)^)[pcb]:=#0;
result:=0;
end;
procedure ReadRTF(wnd:HWND;var dst:PAnsiChar);
var
stream:TEDITSTREAM;
begin
FillChar(stream,SizeOf(stream),0);
stream.pfnCallback:=@StreamReadCallback;
stream.dwCookie:=dword_ptr(@dst);
SendMessage(wnd,EM_STREAMOUT,SF_RTF+SFF_SELECTION,lparam(@stream));
end;
procedure ReplaceTag(src:PAnsiChar;what,new:PAnsiChar;recurse:boolean);
var
i:integer;
block:boolean;
p:pAnsiChar;
begin
block:=what^='{';
repeat
p:=StrPos(src,what);
if p<>nil then
begin
src:=p;
if src[StrLen(what)] in ['A'..'Z','a'..'z'] then
begin
inc(src);
continue;
end;
i:=1;
if block then
begin
while src[i]<>'}' do inc(i); inc(i);
end
else
begin
while not (src[i] in ['}',' ','\',';',#13]) do
inc(i);
end;
StrCopy(src,src+i);
if new<>nil then
StrInsert(new,src,0);
end
else
break;
if not recurse then break;
until false;
end;
procedure ReplaceTags(var src:PAnsiChar);
var
i:integer;
begin
ReplaceTag(src,'\b' ,nil,false);
ReplaceTag(src,'\i' ,nil,false);
ReplaceTag(src,'\ul' ,nil,false);
if (StrPos(src,'\{cf')<>nil) or (StrPos(src,'\{bg')<>nil) then
begin
ReplaceTag(src,'\cf' ,nil,false);
ReplaceTag(src,'\highlight',nil,false);
StrReplace(src,'\{/cf\}','\cf17 ');
StrReplace(src,'\{/bg\}','\highlight0 ');
i:=StrIndex(src,CTableHdr);
StrInsert(ColorTableD,src,i+integer(StrLen(CTableHdr))+1);
ReplaceTag(src,'\pard','\pard\cf17',false);
end;
StrReplace(src,'\{b\}' ,'\b1 ');
StrReplace(src,'\{/b\}' ,'\b0 ');
StrReplace(src,'\{i\}' ,'\i1 ');
StrReplace(src,'\{/i\}' ,'\i0 ');
StrReplace(src,'\{u\}' ,'\ul ');
StrReplace(src,'\{/u\}' ,'\ul0 ');
repeat
i:=StrIndex(src,'\{cf');
if i>0 then
begin
StrCopy(src+i,src+i+1);
i:=StrIndex(src,'\}');
if i>0 then
begin
StrCopy(src+i,src+i+1);
src[i-1]:=' ';
end;
end;
until i=0;
repeat
i:=StrIndex(src,'\{bg');
if i>0 then
begin
StrCopy(src+i,src+i+3);
StrInsert('highlight',src,i);
i:=StrIndex(src,'\}');
if i>0 then
begin
StrCopy(src+i,src+i+1);
src[i-1]:=' ';
end;
end;
until i=0;
end;
function CharCount(p:PWideChar):integer;
begin
result:=0;
while p^<>#0 do
begin
if p^=#10 then inc(result);
inc(p);
end;
end;
procedure SendRTF(wnd:HWND;txt:PWideChar;isUnicode:Boolean;CP:integer=CP_ACP);
var
tmp:PAnsiChar;
sstart:integer;
ls:PAnsiChar;
begin
SendMessage(wnd,EM_GETSEL,wparam(@sstart),0);
if isUnicode then
SendMessagew(wnd,EM_REPLACESEL,0,lparam(txt))
else
begin
SendMessageA(wnd,EM_REPLACESEL,0,lparam(WideToAnsi(txt,ls,CP)));
mFreeMem(ls);
end;
SendMessage(wnd,EM_SETSEL,sstart,sstart+integer(StrLenW(txt))-CharCount(txt));
mGetMem(tmp,RTFBufferSize);
FillChar(tmp^,RTFBufferSize,0);
ReadRTF(wnd,tmp);
ReplaceTags(tmp);
WriteRTF(wnd,tmp);
mFreeMem(tmp);
SendMessage(wnd,EM_SETSEL,-1,0);
end;
end.
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