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 />