Hibernate build infrastructure switching from Maven to Gradle

In the world of build tools this is big news : Steve Ebersole announced that he wanted to migrate from Maven to Gradle for the Hibernate project. A list of reasons is given for the switch (and I utterly understand what they mean).

Well, it is a very good incentive to try Gradle (and really Groovy + Ivy is a very enticing combination).

OPML import for Rhythmbox, kind of

Update : it seems that Rhythmbox now has support for OPML import, you may type the path to the OPML import in the new feed dialog box. I didn't try it, though

I've just installed the brand new Ubuntu 9.04 to replace my good old 6.06, and now I must find a way to import all my podcast feeds exported in opml format from Juice, to Rhythmbox, the official Ubuntu music manager.

However, it seems that Rhythmbox does not manage opml imports. I don't feel like copying manually 70 rss feeds...

An opportunity to learn the XML library of Groovy !

Save this groovy script as opml2rhythmbox.groovy
<br />#!/usr/bin/groovy<br /><br />if(args.size() != 1){<br /> println("Usage : opml2rhythmbox.groovy myfile.opml")<br /> System.exit 1<br />}<br /><br />File opmlFile = new File(args[0])<br />def opml = new XmlSlurper().parse(opmlFile)<br /><br />def builder = new groovy.xml.MarkupBuilder()<br />opml.body.depthFirst().findAll { it.@type == "rss"}.each { rss -><br /> builder.entry(type:'podcast-feed') {<br /> title rss.@title.text()<br /> location rss.@xmlUrl.text()<br /> status '1'<br /> } <br />}<br />
Then if it is not already done, install Groovy
<br />sudo apt-get install groovy<br />
Execute the script on your exported opml file
chmod +x opml2rhythmbox.groovy<br />./opml2rhythmbox.groovy exported.opml > generated.xml<br />
Now, you must manually copy the content of the generated generated.xml file, into the ~/local/share/rhythmbox/rhythmdb.xml db file of Rhythmbox (make a backup of the rhythmdb.xml file before !)

The generated file content must be inserted after the rhythmdb opening tag at the begining of the rhythmdb.xml file
<br /><?xml version="1.0" standalone="yes"?><br /><rhythmdb version="1.6"><br /><!-- Insert here --><br />
Then start Rhythmbox and run "Update all Feeds"

You're done !

Sanitize dates in podcast title with groovy + jid3lib

When I sort the podcasts I download by their ID3 titles, I want to see an older episode sorted after a newer episode.

Here is a groovy script that modifies the MP3 title of an MP3 file passed as first parameter of the script, and replaces any dd.mm.20yy date by a 20yy.mm.dd date. It also moves the date at the beginning of the title.

You need the Java ID3 Tag Library (jid3lib) and an embeddable Groovy (groovy-all.jar)

Now in order to run the script after each download, your podcast receiver must be able to run a custom command after each download. You can use Juice.

So here is a quick and dirty script sanitize_dates.groovy :

<br />import org.farng.mp3.*<br /><br />TagOptionSingleton.getInstance().setOriginalSavedAfterAdjustingID3v2Padding(false)<br /><br />def readMp3Title(filepath) {<br /> def mp3file = new MP3File(filepath) <br /> mp3file.getID3v2Tag().getSongTitle()<br />}<br /><br />def writeMp3Title(filepath,title) {<br /> def mp3file = new MP3File(filepath) <br /> mp3file.getID3v2Tag().setSongTitle(title)<br /> mp3file.save()<br />}<br /><br />def sanitizeTitle(title,action) {<br /> def m = (title =~ /^(.*)([0-9][0-9])\.([0-9][0-9])\.(20[0-9][0-9])(.*)$/)<br /> if(m){<br /> def g = m[0]<br /> action("" + g[4] + "." + g[3] + "." + g[2] + " " + g[1] + g[5])<br /> }<br />}<br /><br /><br />def filepath = args[0]<br />def title = readMp3Title(filepath)<br /><br />println "Original title:${title}"<br />sanitizeTitle(title) { sanitizedTitle -><br /> writeMp3Title(filepath,sanitizedTitle)<br /> println "Title after sanitization:${readMp3Title(filepath)}"<br />}<br /><br /><br />

In the preferences of Juice you can use Run this command after each download with for exemple :

<br />/usr/bin/java -cp /home/me/javalibs/groovy-all.jar:/home/me/javalibs/jid3lib.jar groovy.lang.GroovyShell /home/me/bin/sanitize_dates.groovy "%f"<br />