CODEWITHSUNDEEP
regexperl
snakespan
snakespan

Reputation: 1211

Perl Regex URL contains string but not similar string

I need to write regex for Perl so that it matches /contact (and everything beyond so /contact/talk etc.).

But I also have URL for /contacts so I want it to skip this.

So far I've only been able to write code either for exact matches or for

So something along the lines of:

if ($uri =~ m/contact/i ) {
   ## Redirect somewhere
}

This also redirects everything within /contacts though which is where I'm struggling.

Upvotes: 0

Views: 270

Answers (5)

TrueY
TrueY

Reputation: 7610

Try:

echo -e "/contacts/qqq\n/contact\n/contact/talk\n/ConTact\n/contactx/"|
perl -ne 'm{/contact(?:/|$)} and print'

Output:

/contact
/contact/talk

Upvotes: 0

collapsar
collapsar

Reputation: 17238

/^\/contact\//

there is some guesswork involved - it appears that your urls start with /contact, in case they don't, drop the initial caret.

Upvotes: 0

perreal
perreal

Reputation: 97948

if ($uri =~ m!/contact(?:/|$)!) {
  #
}

Upvotes: 1

user1919238
user1919238

Reputation:

\b is a word boundary marker, which prevents this match from being in the middle of a word:

if ($uri =~ m|\bcontact\b|i ) {
   ## Redirect somewhere
}

I would add it to the beginning and end, so you don't match foocontact either. Or you could make sure that a slash precedes contact.

if ($uri =~ m|/contact\b|i ) {
   ## Redirect somewhere
}

Upvotes: 0

Loamhoof
Loamhoof

Reputation: 8293

if ($uri =~ m/\/contact(?:$|\/)/i ) {
  ## Redirect somewhere
}

Will match /contact because of the $, and everything like /contact/...

Upvotes: 0

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