I want to check for matches on strings that contain urls, like:
http://www.something.com
www.something.com
something.com
I have this regular expression (.Net style) to match urls:
((http|ftp|https|www)://)?(\w+?\.\w+)+([a-zA-Z0-9\~\!\#\#\$\%\^\&\*\(\)_\-\=\+\\\/\?\.\:\;\'\,]*)?
It works for above 3 urls which it should, but unfortunately it also matches this:
35.000
How can I fix the regular expression, so that it will not match 35.000?
Here's a really handy regex that matches URLs and places the protocol, host, path, query, and fragment into groups 1, 2, 3, 4, and 5 respectively. Also it matches both IP adresses and hostnames in the host part. And everything but the host is optional.
(?:(https?|ftp)://)?(\d{1,3}(?:\.\d{1,3}){3}|(?:\w+\.)*[a-z]+)(/[^?#\s]*)(\?[^#\s]*)?(#[^\s]*)?
As you can see, it's very lenient. It just checks the overall structure without actually validating the parts of the URL (encoding and such). But it will match any correct URL so it should be good enough. Just escape the / slashes if using for Javascript and it should work fine.
Try it here.
Related
I need a regular expression for IIS URL Rewrite that will process the rule only when the expression matches any bit of the URL EXCEPT a specific sub-root directory.
Example:
www.mysite.com/wordpress - process rule on any URL that starts with /wordpress after the domain name
www.mysite.com/inventory - do not process rule on any URL that starts with /inventory after the domain name
Tried .*(?<!^\/inventory\/.*) but it still matches the entire string.
You need a lookahead rather than lookbehind. Something like this I think:
^([^/]*/){1}(?!inventory\b)
Where you change 1 to 2 when the exclusion is needed at the next lower sublevel, etc.
I'm struggling with forming a regex that would match:
Just domain in case of URL
Whole string in case of no URL
Acceptance test (regex should match bold text):
http://mozart.co.uk
https://avocado.si/hmm
http://www.qwe123qwe.com
Starbucks
Benchmark 123
So far I've come up with this:
([^\/\/]+)(?:,|$)
It works fine, but not for URLs with trailing slash on the end. How can I modify the expression to include full path (everything on the right side of http(s)://) as well? Thank you.
This regex will match them if it starts with http:// or https:// until the next slash. If it doesn't start with http:// nor https:// then it will match the whole string. Close enough?
(?:^https?:\/\/([^\/]+)(?:[\/,]|$)|^(.*)$)
I should note that most languages have functions built in to properly parse URLs and these are preferable.
You should note that I've got 2 sets of capturing parentheses, so depending on your language that may be significant.
Maybe that ^(http[s]?:\/\/)?(.*)$. Play here: https://regex101.com/r/iZ2vL4/1
This will have Matching groups, the domain you want will be in the 4th matching group.
/^((http[s]?|ftp):\/\/)?\/?([^\/\.]+\.)*?([^\/\.]+\.[^:\/\s\.]{1,3}(\.[^:\/\s\.]{1,2})?(:\d+)?)($|\/)([^#?\s]+)?(.*?)?(#[\w\-]+)?$/mg
Regex101.com workbench to check out your URLs just paste them in the "TEST STRING" Textbox to test it out.
Don't recall where I got this... so I don't know who to credit. But it's pretty slick!
I'm looking for some help with a regex pattern for rewriting a URL. My URL structure is:
http://domain.com/[username]/[token]/[userid]/
The data types are:
username = alphanumeric
token = alphanumeric
userid = numeric
An example with data:
http://domain.com/john1975/aBc123/123456789/
Using a regular expressions I'm trying to get a reference for each piece of data, so I can rewrite to:
index.asp?username={R:1}&token={R:2}&userid={R:3}
Also keep in mind the regex shouldn't be too greedy, so I can still access files such as:
http://domain.com/about.asp
http://domain.com/images/logo.png
The regex I've tried is:
^[0-9a-z]+/[0-9a-z]+/[0-9]+$
This doesn't match my example URL.
You're missing the trailing forward slash. The regex should be :
^([0-9a-z]+)/([0-9a-z]+)/([0-9]+)/$
I'm assuming you're flagging it as case insensitive. If not then you need
^([0-9a-zA-Z]+)/([0-9a-zA-Z]+)/([0-9]+)/$
You also need the brackets so you can call your back references, which are also wrong - you want to match on 1,2 and 3, not 0, which is the match of the whole expression. They should read:
index.asp?username={R:1}&token={R:2}&userid={R:3}
I'm basically not in the clue about regex but I need a regex statement that will recognise anything after the / in a URL.
Basically, i'm developing a site for someone and a page's URL (Local URL of Course) is say (http://)localhost/sweettemptations/available-sweets. This page is filled with custom post types (It's a WordPress site) which have the URL of (http://)localhost/sweettemptations/sweets/sweet-name.
What I want to do is redirect the URL (http://)localhost/sweettemptations/sweets back to (http://)localhost/sweettemptations/available-sweets which is easy to do, but I also need to redirect any type of sweet back to (http://)localhost/sweettemptations/available-sweets. So say I need to redirect (http://)localhost/sweettemptations/sweets/* back to (http://)localhost/sweettemptations/available-sweets.
If anyone could help by telling me how to write a proper regex statement to match everything after sweets/ in the URL, it would be hugely appreciated.
To do what you ask you need to use groups. In regular expression groups allow you to isolate parts of the whole match.
for example:
input string of: aaaaaaaabbbbcccc
regex: a*(b*)
The parenthesis mark a group in this case it will be group 1 since it is the first in the pattern.
Note: group 0 is implicit and is the complete match.
So the matches in my above case will be:
group 0: aaaaaaaabbbb
group 1: bbbb
In order to achieve what you want with the sweets pattern above, you just need to put a group around the end.
possible solution: /sweets/(.*)
the more precise you are with the pattern before the group the less likely you will have a possible false positive.
If what you really want is to match anything after the last / you can take another approach:
possible other solution: /([^/]*)
The pattern above will find a / with a string of characters that are NOT another / and keep it in group 1. Issue here is that you could match things that do not have sweets in the URL.
Note if you do not mind the / at the beginning then just remove the ( and ) and you do not have to worry about groups.
I like to use http://regexpal.com/ to test my regex.. It will mark in different colors the different matches.
Hope this helps.
I may have misunderstood you requirement in my original post.
if you just want to change any string that matches
(http://)localhost/sweettemptations/sweets/*
into the other one you provided (without adding the part match by your * at the end) I would use a regular expression to match the pattern in the URL but them just blind replace the whole string with the desired one:
(http://)localhost/sweettemptations/available-sweets
So if you want the URL:
http://localhost/sweettemptations/sweets/somethingmore.html
to turn into:
http://localhost/sweettemptations/available-sweets
and not into:
localhost/sweettemptations/available-sweets/somethingmore.html
Then the solution is simpler, no groups required :).
when doing this I would make sure you do not match the "localhost" part. Also I am assuming the (http://) really means an optional http:// in front as (http://) is not a valid protocol prefix.
so if that is what you want then this should match the pattern:
(http://)?[^/]+/sweettemptations/sweets/.*
This regular expression will match the http:// part optionally with a host (be it localhost, an IP or the host name). You could omit the .* at the end if you want.
If that pattern matches just replace the whole URL with the one you want to redirect to.
use this regular expression (?<=://).+
I'm quite bad with regex, and I'm looking to match a criteria.
This is a regex expression that should go emmbed into the url for a firewall, so It will block any url that is not like the list at the end.
This is what Im currently using but its not working:
http://www.youtube.com/(*.*)list=UUFwtOm4N5djdcuTAlNIWJaQ
This is the example url (to be blocked):
http://www.youtube.com/watch?NR=1&feature=fvwp&v=P1b5VY_Bp_o&list=UUFwtOm4N5djdcuTAlNIWJaQ
I'm trying to make a regex that will Success fully match when NR=1 or feature=fvwp
are NOT present, I asume I can do it like this: (?!^feature=fvwp$) but the v= and list=UUFwtOm4N5djdcuTAlNIWJaQ are allowed.
Also the v= should be limited to any character (uppercase and lowercase) and 11 length, I assume its: /^[a-z0-9]{11}$/
How can I build all that together and make it work so it would allow and match only on this urls excluding from allowing the previous criterias that I explained:
http://www.youtube.com/watch?v=4eK_RWpTgcc&feature=BFa&list=UUFwtOm4N5djdcuTAlNIWJaQ
http://www.youtube.com/watch?v=TLRl85TJwZM&feature=BFa&list=UUFwtOm4N5djdcuTAlNIWJaQ
http://www.youtube.com/watch?v=QEV9yqrpxkc&feature=BFa&list=UUFwtOm4N5djdcuTAlNIWJaQ
Can you block based on matching by regex? If so, just use
(.*)www\.youtube\.com/watch\?NR=1&feature=fvwp and block whatever matches that.