Re: A little help with regular expressions

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MatsL@xxxxxxxxxxxxxxxxx wrote:
Hi, I saw that some other people posted questions about regular
expressions here so I thought I would do the same.

I'm trying to parse an url to different parts.
I want the file name and path to be two different parts.
To do this I make the assumption that all file names has a '.' in them.
I also want a third part called mode that is appended to the url with a ','.
ie.
/path/url/file.aspx,theMode

would give the parts
path = /path/url
file = file.aspx
mode = theMode

/path/url/,theMode and /path/url,theMode

would give the parts
path = /path/url
file =
mode = theMode

/path/url and /path/url

I assume one of these is meant to be /path/url/

would give the parts
path = /path/url
file =
mode =

I've been working with this for a couple of days now I can't get it to
work :\

here is what I have so far (it's really not working, I messed it up
somewhere along the way...)
[snip]

Unless you have some compelling reason to do this with regex, it seems
to be it would be far more straightforward (and maintainable, and
understandable) to do this:

- Is there a comma? If there is, assign everything after the comma to
mode, and remove everything from the comma onwards

With what remains:
- Look for the last slash. (If there isn't a slash, assign the entire
text to file or path according to whether it does or doesn't contain a
period)
- Is there a period after the last slash?
Yes: Assign everything after the last slash to file, everything up
to but not including the last slash to path
No: Assign everything to path, dropping a trailing slash if one is
there

I haven't checked every case, but this or something like it is surely
more sensible than a superduper one line regex.


OR

Are the static members of the Path class any help here? There's a class
for parsing URLs also I think.

--
Larry Lard
Replies to group please

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