groovy - html modification with state-of-art library JSoup -

gistfile1.groovy

@Grapes(
    @Grab(group='org.jsoup', module='jsoup', version='1.6.2')
)
import org.jsoup.*
import org.jsoup.nodes.*

/** 
 * during build time we combine all the js files to single file (to speed up page loading) 
 * this script is part of the this script and its purpose is to collect all the external js files refered in
 * MasterPage.html (template for the page) to feed up function which do the real combining and minifying to      
 * 'all.js' file. Thus this script replace (in fact remove all the external script links and append new one)   
 * scripts with only the combined js file (in this case called 'all.js')
*/

def masterPage = new File("MasterPage.html") 

Document doc = Jsoup.parse(masterPage, "UTF-8");

def scriptSources = []

doc.select("script").each { element ->

    if (element.hasAttr("src")) {
        scriptSources << element.attr("src")
        element.remove()
    }
    
}

doc.select("script").before('<script src="/js/all.js" type="text/javascript"></script>')

masterPage.text = doc.outerHtml()