Need help with a problem that has been bothering me for some time!
I am attempting to create an Apache AliasMatch Regular Expression that will match a URL. The Issue I'm having is that I am using the capture groups as variables $0 $1 $2 within the file match portion. Essentially I need to capture the path/to/controller portion of the url to actually grab my file and I wish to not use any capture groups after and including the double forward slashes.
http://domain.com/etc/xx/abc/path/to/controller//myDesiredMVCAction
The issue Essentially is that with the following expression:
^/etc/(xx|yy)/(abc|xyz)/(.*)(?=//)(.*)
it only matches
http://domain.com/etc/xx/abc/path/to/controller//myDesiredMVCAction
and not:
http://domain.com/etc/xx/abc/path/to/controller
given that the double slashes and everything trailing it is optional.
So when I make the regex expression optional by appending a ? it ruins the capture group by including the //myDesiredMVCAction portion..
^/etc/(xx|yy)/(abc|xyz)/(.*)(?=//)(.*)?
It is possible to achieve what I'm after?
I believe you can use
^/etc/(xx|yy)/(abc|xyz)/(.*?)(?://.*)?$
^^^^^^^^^^^^^^^
See the regex demo
The thing is, the (.*?)(?://.*)?$ part of the pattern works in such a way that (.*?) is not tried first since it is lazily quantified with *?, and (?://.*)?$ is tried first, and when the latter does not match, the (.*?) expands, writing a character to the group value at each expansion step.
The pattern matches:
^/etc/ - /etc/ after base URL(xx|yy)/ - xx or yy and then a /(abc|xyz)/ - an abc or xyz and a / after them(.*?) - any zero or more characters, but as few as possible before the first(?://.*)? - (optional group due to ? at the end) two /s followed with any characters, as many as possible up to$ - the end of the string input.Collected from the Internet
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