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Subject:
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Regex Help
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Posted By:
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boyer99g
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Post Date:
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10/8/2004 4:32:23 PM
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Hi,
I need some help with a regular expression. I'm trying to parse, out of text, tags in the following forms:
<%Foo%>
<%Bar("aasd", "213")%>
I want to get the name of the function/tag in a named group, and pull out the parameters (the text inside the "" for each).
Here is what I have so far for the pattern I pass to the Regex object constructor:
@"<%(?<NAMES>\w*)(\(""(?<ARGS>.*)""\))?%>"
This gets the names correctly ('Foo' and 'Bar'), but the ARGS group on ly contains the following:
aasd", "213
I understand why I get this, but am at a loss as to how to get what I want. Any help would be appreciated; I'm starting to get a little frustrated. Thanks.
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Reply By:
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bmains
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Reply Date:
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10/8/2004 5:33:54 PM
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<%(?<
Why is the ? there? The ( is to group the first set of the regexp. Second, in the params part, I see no check for a , or white space.
Brian
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Reply By:
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boyer99g
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Reply Date:
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10/8/2004 5:46:14 PM
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Thanks for the respose.
The '?' is needed to signify a named group; it's necessary, and that part of the expression works fine.
I've since come up with this expression, which works better, but still isn't perfect:
@"<%(?<NAMES>\w*)(\((""(?<ARGS>[^""]*))+\))?%>"
With this, I get the separate parameters, but also the comma delimiters. So if the input was <%Foo("bar", "bar")%>, the captures in the ARGS group would be (without the single quotes):
'bar'
', '
'bar'
'' <- empty string
Again, I realize why this is happening, but no matter what change to the expression I try, I only succeed in breaking it completely.
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