Regex: match SQL PRINT blocks with quoted text in it - sql

Question

I have the following text I am trying match using regular expressions:
PRINT CONVERT(NVARCHAR,
CURRENT_TIMESTAMP, 111) + ' ' +
CONVERT(NVARCHAR, CURRENT_TIMESTAMP,
108)
+ ' -Test Mode : ' + (CASE WHEN #turbo_mode_ind = 1 THEN
'some text ''test'' some more text.'
ELSE 'and even more text ''temp'' when
will it stop ?' END)
PRINT 'text don''t text'
PRINT 'text ''test2'' text'
What I want to match is:
PRINT CONVERT(NVARCHAR,
CURRENT_TIMESTAMP, 111) + ' ' +
CONVERT(NVARCHAR, CURRENT_TIMESTAMP,
108)
+ ' -Test Mode : ' + (CASE WHEN #turbo_mode_ind = 1 THEN
'some text ''test''
PRINT 'text ''test2''
So basically I want to match:
starting at PRINT
each char that comes after PRINT (.*)
inclusive line-breaks (don't stop at
line-breaks)
with \'{2}\w+\'{2} at the end of the
match
non-greedy (.*?)
AND no empty line(s) between PRINT
and \'{2}\w+\'{2}
I have already compsed this, but it still matches empty line(s):
PRINT.*?\'{2}\w+\'{2}(?!\n\s*\n)

Answer 1

Edit after comment:
Looking at the requirements again I could not come up with a single regex solution quickly. In your comments you mention that you are using C#.
A possible solution would therfore be to first split the string at blank lines and then extracting the text.
Something like this:
string pattern = #"^$";
foreach (string result in Regex.Split(input, pattern, RegexOptions.Multiline)
{
Regex rxFindSql = Regex(#"PRINT.*?\'{2}\w+?\'{2}", RegexOptions.SingleLine)
MatchCollection matches = rxFindSql.Matches(result);
}
This should do the trick but I did not test the code.
I hope this helps.