| Re: URL Parsing for wget in IDL [message #54899 is a reply to message #54849] |
Thu, 19 July 2007 08:19   |
Michael Galloy
Messages: 1114
Registered: April 2006
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Senior Member |
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Conor wrote:
> On Jul 17, 11:54 am, Ben Panter <m...@privacy.net> wrote:
>> Hi Folks,
>>
>> Does anyone know of a handy way of parsing URLs in IDL? Or even a
>> nice perl script to do it? The situation is that we have a server that
>> can accept SQL queries via URL encoding of a get command, which works in
>> the main part but falls over with '&' and '+' type syntax.
>>
>> I'll write a regexp version myself if necessary, but it's not trivial
>> - you have to ensure the ordering is correct as there are several
>> encodings which use characters which would other wise be replaced.
>>
>> cheers,
>>
>> Ben
>>
>> --
>> Ben Panter, Edinburgh, UK.
>> Email false,http://www.benpanter.co.uk
>> or you could try ben at ^^^^^^^^^^^^^^^
>
> Googling "perl parse url" brought up plenty of promising looking
> candidates. Here's one:
>
> http://textsnippets.com/posts/show/523
>
> IDL does have regular expressions, although I haven't tried to see if
> they can do as much as perl (they probably can). So you can always
> take one of those regular expressions and just convert it to an IDL
> regular expression. IDL does use different syntax than perl, so it
> would take some work. You would also have to know a lot about the IDL
> regular expression system, which I'm afraid I can't help you with.
> There's a website somewhere that explains it all, but I can't find it
> at the moment. Someone here knows though...
>
The regular expression they suggest is:
^((http[s]?|ftp):\/)?\/?([^:\/\s]+)((\/\w+)*\/)([\w\-\.]+[^# ?\s]+)(.*)?(#[\w\-]+)$
which I think will be OK for IDL except \s (whitesace) needs to be
[[:blank:]] and \w (word character) needs to be [[:alnum:]_]
Check out:
http://michaelgalloy.com/2006/06/11/regular-expressions.html
which links to a paper with more details at:
http://www.ittvis.com/codebank/search.asp?FID=311
Mike
--
www.michaelgalloy.com
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