Hi guys I am looking for a regular expression which will not match any given string that is exactly equal to a few keywords I will determine manually.
The purpose is to edit my urlrewrite.xml which can accept regexps in following format
<rule>
<from>^/location/([A-Z]+)/name/([A-Z]+)</from>
<to>/login?name=$2&location=$1</to>
</rule>
For example I want to redirect everything after / which is not 'login' and 'signup' to another page. I am trying following ones but none satisfies my request.
^/(?!(login|signup).*
^/(?!(login|signup)[A-Za-z0-9]+
Because I want it to match only if input is exactly 'login' or 'signup' however, it declines 'loginblabla', too.
Any solutions are highly appreciated. :)
You need to add a $ anchor at the end of the lookahead:
^/(?!(login|signup)$)(.+)
Now anything that isn't exactly login or signup will be captured in group $1.
Related
I need to fix my url pattern:
/^((http(s)?(\:\/\/)){1}(www\.)?([\w\-\.\/])*(\.[a-zA-Z]{2,4}\/?)[^\\\/#?])[^\s\b\n|]*[^\.,;:\?\!\#\^\$ -]/
I thought this regex was ok, but it is not working for urls like: https://xx.xx (without www). 'www' should be optional ((www.)?). Where is the bug?
The problem is not in the (www\.)? part but that parts after that.
Take a look at the [^\\\/#?] and the [^\.,;:\?\!\#\^\$ -] parts.
So a valid URL would be https://xx.xx plus none of \/#? plus none of .,;:?!#^$_- making the url valid if you add those, for example https://xx.xx11.
I do advice you to not try to create your own regex because you are missing a lot!
For example, tlds like .amsterdam are valid. And why are you capturing so many groups?
Your regex as an image made with https://www.debuggex.com/:
I need to pass tokens like b'//x0eaa#abc.com//x00//xf0//x7f//xff//xff//xfd//x00' in my Django Url pattern. I am not able to find matching regex for that resulting Page not found error.
My url will be like /api/users/0/"b'//x0eaa#abc.com//x00//xf0//x7f//xff//xff//xfd//x00'"/
I have tried with following regex
url(r'^api/users/(?P<username>[\w\-]+)/(?P<paging_state>[\w.%+-]+#[A-Za-z0-9.-]+\.[A-Za-z]{2,4})/$', views.getUserPagination),
Please pass the token in request header or body and then use accordingly in your view.
Considering there are some static predictable elements in your url like -
api/users/
/" before b
"/ at the end after '
So I can see the url in either of the 2 ways below. Regex's mentioned accordingly:
api/users/(set of words, digits or hyphens)/"(any character except newline)"/
REGEX: ^api\/users\/([\w\d\-]+)\/"(.*)"\/$
URL: url(r'^api\/users\/([\w\d\-]+)\/"(.*)"\/$', views.getUserPagination),
api/users/(set of words, digits or hyphens)/"(one character-b)'//(any no. of words or digits)#(any no. of words or digits).(any no. of words or digits) (any no. of words, digits, front slashes)'"/
REGEX: ^api\/users\/([\w\d\-]+)\/"([a-g]'\/\/[\w\d]*#[\w\d]*.[\w\d]*[\/\w\d]*')"\/$
URL: url(r'^api\/users\/([\w\d\-]+)\/"([a-g]'\/\/[\w\d]*#[\w\d]*.[\w\d]*[\/\w\d]*')"\/$', views.getUserPagination),
You should be able to use either of the above two. There can be multiple ways to match the token part in your url. So unless it is a big security concern, you can do with the simplest approach as mentioned in point 1.
I moved to a new website and it mangled up my URL's. Now blog posts are accessible from multiple URL's and would like to redirect one pattern to the other.
I am trying to redirect the first case to the second case:
~/blogs/johndoe/john-doe/2014/03/14/test-article1 =>
~/blogs/john-doe/2014/03/14/test-article1
~/blogs/jimjones/jim-jones/2014/03/14/test-articleb =>
~/blogs/jim-jones/2014/03/14/test-articleb
How do I create a pattern smart enough to slice out the first "johndoe" and "jimjones"? I am using this for IIS rewrite but I think any RegEx should work. Thanks for any help.
This works:
^~/blogs/\w+/(\w+)-(\w+)/(\d{4})/(\d\d)/(\d\d)/([\w-]+)$
Debuggex Demo
It just discards the non-dash name. It doesn't know if its equal to the dash name or not. And it also assumes that the date numbers are valid. 9899/45/33 would be matched.
Capture groups:
First name
Last name
Year
Month
Day
Article name
I don't know about IIS rewrites, but this should work:
/^~/blogs\/[a-z]+\/ -> ~/blogs/
The regular expression will match the start of a string, following by ~/blogs/, followed by a string of all lowercase characters.
I don't use IIS, but this should be at least close.
Pattern:
^blogs/\w+/(\w+/)
Action
blogs/{R:1}
Handy usage doc
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 (?<=://).+
We've got some incoming URLs that needs to be redirected, but we are having trouble with URLs that contains pluses (+).
For example any incoming URL must be redirected to the Homepage of the new site:
/eng/news/2005+01+01.htm
Should be redirected to to the home page of the new site
/en/
Using UrlRewriter.net we've set up a rule which works with 'normal' URLs but does not work for the above
<redirect url="~/eng/(.+)" to="/en/index.aspx" />
However it works fine if i change the incoming URL to
/eng/news/2005-01-01.htm
What's the problem and can anyone help?
I don't know about UrlRewriter.net, and I'm not sure which regex syntax it uses. I give some hint based on Perl regex.
what is the ~ at the beginning? Perhaps you mean ^, i.e. beginning of the string.
(.+) matches any character repeated one or more time; it does not match the + sign as you want
This is one way to write a (Perl) regex matching URLs starting with the string /eng/ and containg a + sign:
^\/eng\/.*\+.*
I hope this helps.