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Neat tool, I like how clear the visualizations are. It didn't work for me under Chrome on OSX, though. Chrome Version 23.0.1271.101, OSX 10.7.5.
Works for me, Chrome 25.0.1364.5 dev, OS X 10.8.2. Maybe it's a stable version bug.
I tried the most complicated regular expression in the world: http://ex-parrot.com/~pdw/Mail-RFC822-Address.html and the server 500'd. Just joking, it's a very good tool. P.S. it crashed with three nested groups (((a*)))
As an aside. I quit using regex to validate email addresses a while ago. Part of it is that a regex that large is simply incomprehensible and very difficult to maintain and fix if something is broken. The best solution, in my opinion, is a state machine based analyzer that checks the email address character-by-character and confirms compliance with RFC5322. This would also include checking DNS for MX records (which m…
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You should build a tool that is the inverse of this. Let people build regular expressions by creating the visual diagram (some sort of click and drag GUI).
I've always wondered why there doesn't already exist such a tool. Regex strings are so opaque and hard to read. We can't really fix that for code (short of building objects), but what we could fix is a better way to write them. A graphical tool to create them, built of units instead of just strings, and the output could still be a regex string.
it breaks with this: (?:(?:\r\n)?[ \t]) (?:(?:(?:[^() @,;:\\".\[\] \000-\031]+(?:(?:(?:\r\n)?[ \t] )+|\Z|(?=[\["() @,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t])) "(?:(?: \r\n)?[ \t]) )(?:\.(?:(?:\r\n)?[ \t]) (?:[^() @,;:\\".\[\] \000-\031]+(?:(?:( ?:\r\n)?[ \t])+|\Z|(?=[\["() @,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t])) "(?:(?:\r\n)?[ \t]) )) @(?:(?:\r\n)?[ \t]) (?:[^() @,;:\\".\[\] \000-\0 31]+(?:(?:…
Hello, I'm the creator of this (trevmex is one of my co-workers). I just want to thank everyone for the feedback so far, I am looking into the issues that have been brought up (they'll have to wait until this evening to be fixed though...I have a day job).
Neat tool, I like how clear the visualizations are. It didn't work for me under Chrome on OSX, though. Chrome Version 23.0.1271.101, OSX 10.7.5.
Hello, I'm the creator of this (trevmex is one of my co-workers). I just want to thank everyone for the feedback so far, I am looking into the issues that have been brought up (they'll have to wait until this evening to be fixed though...I have a day job).
A question though: a lot of people seem to encounter issues/50x errors with the server-side calculation of the regexp. Why not have a client-side script to interpret the regexp?
Would save server ressources and wouldn't limit the user to server capacity to interpret more complex regexps.
Nice. I wrote something similar a while back (with the goal to show lint errors): regexp.quaxio.com Note: if you type [b-a], you fail to say it's an invalid range.