shortly about my problem: i've got rtf document, containing unique named tagged elements like {Date}, {Name}, used to be replaced with real data when needed. This is template docs.
Also, template document may contain tables, like this (here i'm using "],[" brackets to define cells):
[ Client fullname ] [ Client Birthday ]
[ {client:row} {client.name} ] [ {client.bday} ]
statement {*:row} means current row to be cloned during inserting for ex. a dataset into a table.
So, during parsing this template document, at moment of finding {*: trow} element, i'm trying to copy this row n-times by calling such func
Code: Select all
function makeRowCopy(_table: TRVTableItemInfo; row, n: integer): integer;
var
Stream: TMemoryStream;
o: integer;
begin
Stream := TMemoryStream.Create;
_table.SaveRowsToStream(Stream, row, 1);
Stream.Position := 0;
_table.InsertRows(row + 1, n, 0, False);
for o := 1 to n do
_table.LoadFromStreamEx(Stream, row + o);
Stream.Free;
end;
which raises an exception.
Please, if you have an idea where my way is incorrect, be so kind, tell me =)
Thanks.
P.s. this may be important: algorithm of parsing document is recursive, and looks like:
Code: Select all
procedure parseblock(rv: TCustomRVData)
begin
for Ix := 0 to rv.ItemCount - 1 do
if rv.GetItemStyle(Ix) = rvsTable then begin
table := TRVTableItemInfo(rvd.GetItem(ix));
for r := 0 to table.Rows.Count - 1 do
begin
headerTag := GetRowTag(table, r);
if pos( ':row', headerTag) > 0 then begin
//here i call row clone func and :
for c := 0 to table.Rows[r].count - 1 do
parseblock(table.cells[r + step, c].GetRVData);
end else
begin
for c := 0 to table.Rows[r].Count - 1 do
if table.Cells[r, c] <> nil then
RenderBlock(table.Cells[r, c].GetRVData);
end;
end;
end
else
if rv.GetItemStyle(Ix) >= 0 then begin //just text
// here i'm replacing tag with data
end;
end;