Groovy Regex

gistfile1.groovy

// String, need to escape backslashes
def bs = '\\\\'


// Slashy Strings: /abc/
// String literal not needing additional backslashes to escape special characters. 
def path = /C:\dev\source/


// G-Strings (double-quotes)
// Can use templating: ${expression} syntax 
// Any valid Groovy expression can be enclosed, incl method calls
println "The $foxtype ${foxcolor.join()} fox"


// Multi-Line Strings
// use """ 
def text = """\
hello there ${name}
how are you today?
"""


// Pattern: ~/abc/
// see java.util.regex.Pattern
def pattern = ~/.*.java/


// Create Matcher: =~
// Returns a Matcher (java.util.regex.Matcher) 
def matcher = (input =~ regex)
int MATCH1 = 0, GROUP1 = 0
String result = matcher[MATCH1][GROUP1]


// test: =~
// a Matcher coerces to a boolean by calling its find() method
// requires only a subsequence of the string to match
// "true" if it has at least one match
if (matcher)
if (input =~ regex)


// test: ==~
// requires an exact match of the whole string,  matches()
// returns a Boolean, not a Matcher.
if ("foo" ==~ /aRegex/ )
assert "foo" ==~ /aRegex/