Regular expression to stop at first match

publicRavi picture publicRavi · Mar 23, 2010 · Viewed 662k times · Source

My regex pattern looks something like

<xxxx location="file path/level1/level2" xxxx some="xxx">

I am only interested in the part in quotes assigned to location. Shouldn't it be as easy as below without the greedy switch?

/.*location="(.*)".*/

Does not seem to work.

Answer

Daniel Vandersluis picture Daniel Vandersluis · Mar 23, 2010

You need to make your regular expression non-greedy, because by default, "(.*)" will match all of "file path/level1/level2" xxx some="xxx".

Instead you can make your dot-star non-greedy, which will make it match as few characters as possible:

/location="(.*?)"/

Adding a ? on a quantifier (?, * or +) makes it non-greedy.