electronicMacks has asked for the wisdom of the Perl Monks concerning the following question:
I’m maintaining a program that (among other things) reads a users input and, if necessary, inserts the appropriate <a href= > tag. Currently it uses the following regex:
s/((http|ftp|news):\/\/\S*)/<a href=”$1\””>$1<\/a>/g;
The main problem is that this regex will place tags around all urls. This creates problems if the user has already hand coded the tags in their input, such as <a href = http://www.perlmonks.org>Click here</a>
Can any Monks suggest a regular expression that will insert href tags around naked urls, but leave urls within tags alone?
s/((http|ftp|news):\/\/\S*)/<a href=”$1\””>$1<\/a>/g;
The main problem is that this regex will place tags around all urls. This creates problems if the user has already hand coded the tags in their input, such as <a href = http://www.perlmonks.org>Click here</a>
Can any Monks suggest a regular expression that will insert href tags around naked urls, but leave urls within tags alone?
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