I automatically generate a short summary for each post on my blog. The logic for creating the summary should stay on the front end but I did not have the source code for my blog engine (.text) so I put it in the DB.
The following function removes all HTML tags, leaving only the text I want to display in the summary:
CREATE FUNCTION [dbo].[replaceHTML]
(
@cont varchar(8000)
)
RETURNS varchar(8000)
AS
BEGIN
declare @out varchar (8000)
declare @tag varchar (8000)
declare @pos1 int
declare @pos2 int
-- Find the start/end of first tag
set @pos1=charindex('<', @cont);
set @pos2=charindex('>', @cont);
if not(@pos1>0 and @pos2>@pos1)
begin
set @out=@cont
end
else
begin
set @out='';
-- as long as there are tags
while @pos1>0 and @pos2>@pos1
begin
set @tag=substring(@cont,@pos1,@pos2-@pos1+1);
if @pos1>1
begin
set @out=@out+substring(@cont,1,@pos1-1)
end
set @cont=substring(@cont,@pos2+1, len(@cont) - @pos2);
-- Find the start/end of next tag
set @pos1=charindex('<', @cont);
set @pos2=charindex('>', @cont)
end
set @out=@out+@cont
end
return(@out)
END
It may not be very nice, but it works and it improves the Google search results (which is strange as Google gets a complete list my posts via the sitemap...)
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