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RegViz: A Web-Based Tool for Visual Debugging of Regular Expressions

71 points by beckf 12y ago

foxylion 12y ago
Another great site I use for highlighting regular expressions is regex101.com It additionally supports PCRE and Python syntax. And has also a unit testing feature. See the tools website here: https://regex101.com https://regex101.com
remyp 12y ago
Very cool! I think most of us would admit we spend more time than we'd like on regex.
ajsquared 12y ago
I've previously used http://www.regexplanet.com/ http://www.regexplanet.com/ quite a bit, but this looks very promising. I really like the highlighting!
senorgusto 12y ago
If you haven't seen http://regexr.com http://regexr.com, you're missing out...
elsamuko 12y ago
HTML entities seem to break the parser. And FF warns of XSS if I want to share my XSS sample text: http://regviz.org/?state=%7B%22regex%22%3A%22XSS%22%2C%22modifier%22%3A%22gi%22%2C%22text%22%3A%22%3Cscript%C2%A0type%3D%5C%22text%2Fjavascript%5C%22%3Ealert(%5C%22XSS%5C%22)%3B%3C%2Fscript%3E%5Cn%5Cn%22%2C%22tests%22%3A%5B%7B%22start%22%3A33%2C%22length%22%3A7%7D%2C%7B%22start%22%3A41%2C%22length%22%3A11%7D%2C%7B%22start%22%3A57%2C%22length%22%3A10%7D%2C%7B%22start%22%3A89%2C%22length%22%3A10%7D%5D%7D http://regviz.org/?state=%7B%22regex%22%3A%22XSS%22%2C%22mod...
jgalt212 12y ago
My two cents on other solutions: http://jex.im/regulex/ http://jex.im/regulex/ has beautiful railroad diagrams, but limited functionality otherwise. https://www.debuggex.com/ https://www.debuggex.com/ also has railroad diagrams, and a ton of other functionality
- McUsr 12y ago
  Debuggex worked best for me, dabbling with PCRE. I just wish the fonts was somehow bettter on a mac.
WhitneyLand 12y ago
The worst thing about regular expressions is that most people only need them occasionally. You invest a few hours becoming an expert and then forget a lot of it by the next time you need them. For this reason I really appreciate tools that explain expressions in plain english. For example check out how RegEx buddy parses this expression: http://www.regexbuddy.com/screens/analyze.png http://www.regexbuddy.com/screens/analyze.png

71 points by beckf 12y ago

Another great site I use for highlighting regular expressions is regex101.com It additionally supports PCRE and Python syntax. And has also a unit testing feature. See the tools website here: https://regex101.com https://regex101.com

remyp 12y ago

Very cool! I think most of us would admit we spend more time than we'd like on regex.

ajsquared 12y ago

I've previously used http://www.regexplanet.com/ http://www.regexplanet.com/ quite a bit, but this looks very promising. I really like the highlighting!

senorgusto 12y ago

If you haven't seen http://regexr.com http://regexr.com, you're missing out...

elsamuko 12y ago

HTML entities seem to break the parser. And FF warns of XSS if I want to share my XSS sample text: http://regviz.org/?state=%7B%22regex%22%3A%22XSS%22%2C%22modifier%22%3A%22gi%22%2C%22text%22%3A%22%3Cscript%C2%A0type%3D%5C%22text%2Fjavascript%5C%22%3Ealert(%5C%22XSS%5C%22)%3B%3C%2Fscript%3E%5Cn%5Cn%22%2C%22tests%22%3A%5B%7B%22start%22%3A33%2C%22length%22%3A7%7D%2C%7B%22start%22%3A41%2C%22length%22%3A11%7D%2C%7B%22start%22%3A57%2C%22length%22%3A10%7D%2C%7B%22start%22%3A89%2C%22length%22%3A10%7D%5D%7D http://regviz.org/?state=%7B%22regex%22%3A%22XSS%22%2C%22mod...

jgalt212 12y ago

My two cents on other solutions: http://jex.im/regulex/ http://jex.im/regulex/ has beautiful railroad diagrams, but limited functionality otherwise. https://www.debuggex.com/ https://www.debuggex.com/ also has railroad diagrams, and a ton of other functionality

McUsr 12y ago
Debuggex worked best for me, dabbling with PCRE. I just wish the fonts was somehow bettter on a mac.

WhitneyLand 12y ago

The worst thing about regular expressions is that most people only need them occasionally. You invest a few hours becoming an expert and then forget a lot of it by the next time you need them. For this reason I really appreciate tools that explain expressions in plain english. For example check out how RegEx buddy parses this expression: http://www.regexbuddy.com/screens/analyze.png http://www.regexbuddy.com/screens/analyze.png