CODEWITHSUNDEEP
regexgroovy
ubiquibacon
ubiquibacon

Reputation: 10667

Why isn't this regex working?

Regex works fine here, but my script gets choked up on the underscores when I run it. The underscores should not need to be escaped... What is the deal?

Just trying to grab any leading/trailing $ and _:

def someString1 = "__test"
def someString2 = "$test"
def someString3 = "test_"
def someString4 = "$test_"

//...

    def matcher = someString1 =~ /([\$_]*)(.+?)([\$_]*)/

Using Netbeans as my IDE and the coloring of the regex indicates it thinks the underscores are variables. Same is true if the dollar signs are escaped or not escaped.

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Upvotes: 2

Views: 103

Answers (2)

Joel
Joel

Reputation: 4772

This is because the $ is a String and GString placeholder in groovy. Since you are using groovy to do the regex, you will have to escape anything that follows a $ or I am sure its possible hard code the expression in a string..

def matcher = someString =~ /([\$\_]*)(.+?)([\$\_]*)/

Upvotes: 2

Nick
Nick

Reputation: 4362

The express $_ in regex is a back-reference for the entire input string. Try changing your regex to this:

([_\$]*)(.+?)([_\$]*)

Upvotes: 3

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