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groovy

Extracting URL part (blog name) with Groovy

I am working with the following URL: http://www.espn.com/blog/stephania-bell/post/_/id/3563/key-fantasy-football-injury-updates-for-week-4-2

I am trying to extract the name of the blog as (stephania-bell).

I have implemented following function to extract the expected value from URL:

def getBlogName( def decodeUrl )
{
    def urlParams = this.paramsParser.parseURIToMap( URI.create( decodeUrl ) )
    def temp = decodeUrl.replace( "http://www.espn.com", "" )
            .replaceAll( "(/_/|\\?).*", "" )
            .replace( "/index", "" )
            .replace( "/insider", "" )
            .replace( "/post", "" )
            .replace( "/tag", "" )
            .replace( "/category", "" )
            .replace( "/", "" )
            .replace( "/blog/", "" )
    def blogName = temp.replace( "/", "" )
    return blogName
}

However I am missing something and the value it returns is blogstephania-bell. Could you please help me understanding what I am missing in the function implementation? Or maybe there is a better way of doing the same thing?

Solution

  • This kind of job can be easily handled by regular expression. If we want to extract URL part between http://www.espn.com/blog/ and the next / then following code will do the trick:

    import java.util.regex.Pattern

def url = 'http://www.espn.com/blog/stephania-bell/post/_/id/3563/key-fantasy-football-injury-updates-for-week-4-2'

def pattern = Pattern.compile('^https?://www\\.espn\\.com/blog/([^/]+)/.*$')

def (_, blog) = (url =~ pattern)[0]

assert blog == 'stephania-bell'