1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
|
function RTFtoText(const RTF: string;ReplaceLineFeedWithSpace,DoTrimLeft:Boolean;TrailAfter:integer): string;
var
n,i,x:Integer;
GetCode:Boolean;
Code:String;
ThisChar,LastChar:Char;
Group:Integer;
Skip:Boolean;
procedure ProcessCode;
begin
if ThisChar in ['\',' ',#13,#10] then
begin
if (Code='\par') or (Code='\line') or (Code='\pard') then
begin
if ReplaceLineFeedWithSpace
then Result:=Result+' '
else Result:=Result+#13#10;
GetCode:=FALSE;
skip:=TRUE;
end;
if Code='\tab' then
begin
Result:=Result+#9;
GetCode:=FALSE;
skip:=TRUE;
end;
end;
if ((Length(Code)=4) and ((Code[1]+code[2])='\''')) then
begin
Result:=Result+Chr(strtoint('$'+code[3]+code[4]));
GetCode:=FALSE;
skip:=TRUE;
end;
end;
begin
try
// length is always shorter
n:=Length(RTF);
Result:='';
// are we getting a code?
GetCode:=FALSE;
// indent level of curlies
Group:=0;
// allow for escaped characters
LastChar:=#0;
// parse each character
x:=1;
while x<=n do
begin
Skip:=FALSE;
ThisChar:=RTF[x];
case ThisChar of
'{':if LastChar<>'\'
then begin // Curly start
inc(Group);
skip:=TRUE;
end
else GetCode:=FALSE;
'}':if LastChar<>'\'
then begin // Curly end
dec(Group);
skip:=TRUE;
end
else GetCode:=FALSE;
'\':if LastChar<>'\'
then begin // Code start
if GetCode then ProcessCode;
Code:='';
GetCode:=TRUE;
end
else GetCode:=FALSE;
' ':begin
if GetCode then
begin
ProcessCode;
GetCode:=FALSE;
skip:=TRUE;
end;
end;
#10:
begin
if GetCode then
begin
ProcessCode;
GetCode:=FALSE;
skip:=TRUE;
end;
if Group>0 then
begin
skip:=TRUE;
end;
end;
#13:
begin
if GetCode then
begin
ProcessCode;
GetCode:=FALSE;
skip:=TRUE;
end;
if Group>0 then
begin
skip:=TRUE;
end;
end;
end;
if not GetCode then
begin
if (not Skip) and (Group <= 1) then
Result:=Result+ThisChar;
end
else begin
Code:=Code+ThisChar;
ProcessCode;
end;
LastChar:=ThisChar;
Inc(x,1);
end;
// remove trailing spaces and cr/lf
n:=Length(Result);
while ((n>0) and (Result[n]<' ')) do
dec(n);
if n>0 then
SetLength(Result,n);
if DoTrimLeft then
begin
i := Length(Result);
n := 1;
while (n <= i) and (Result[n] <= ' ') do Inc(n);
Result := Copy(Result, n, Maxint);
end;
result:=TrimLeft(Result);
if TrailAfter>0 then
begin
if Length(Result)>TrailAfter then
begin
SetLength(Result,TrailAfter);
result:=result+'...';
end;
end;
except
on e:exception do
end;
end; |
Partager