Delphi-PRAXiS :: Get Cover Art (Online oder iTunes / WMP)

#!/Library/Frameworks/Python.framework/Versions/Current/bin/python

import sys, os, urllib, string, xml.dom.minidom, traceback

class AmazonCoverArt(object):
LICENSE_FILE = "amazonLicense.txt"
BASE_URLS = {
   "US":"http://webservices.amazon.com/onca/xml?Service=AWSECommerceService",
   "UK":"http://webservices.amazon.co.uk/onca/xml?Service=AWSECommerceService",
   "DE":"http://webservices.amazon.de/onca/xml?Service=AWSECommerceService",
   "JP":"http://webservices.amazon.co.jp/onca/xml?Service=AWSECommerceService",
   "FR":"http://webservices.amazon.fr/onca/xml?Service=AWSECommerceService",
   "CA":"http://webservices.amazon.ca/onca/xml?Service=AWSECommerceService"}
FULL_URL = string.Template(
   "${baseURL}&AWSAccessKeyId=${accessKey}&Operation=${operation}&SearchIndex=${searchIndex}&"
   +"Title=${title}&Artist=${artist}&Keywords=${keywords}&ResponseGroup=${responseGroup}")

licenseKey = ""

def __init__(self):
   if os.access(self.LICENSE_FILE, os.R_OK):
      f = open(self.LICENSE_FILE)
      self.licenseKey = f.readline().strip()
      f.close()

def search(self, artist='', album='', keywords=''):
   if self.licenseKey == "": return []
   url = self.getURL(artist, album, keywords)
   covers = []
   c = None
   try:
      c = urllib.urlopen(url)
      xmlStr = c.read()
      covers = self.getCovers(xmlStr)
      c.close()
   except:
      if c: c.close()
   return covers

def getCovers(self, xmlStr):
   covers = []
   usedURLs = []
   try:
      rootNode = xml.dom.minidom.parseString(xmlStr)
      #print rootNode.toprettyxml().encode('ascii', 'ignore')
      itemNodes = rootNode.getElementsByTagName("Item")
      for itemNode in itemNodes:
         for tagName in ("SmallImage","MediumImage","LargeImage"):
            imageNodes = itemNode.getElementsByTagName(tagName)
            for imageNode in imageNodes:
               cover = self.getCoverInfo(imageNode)
               if cover["url"] not in usedURLs:
                  covers.append(cover)
                  usedURLs.append(cover["url"])
   except:
      traceback.print_exc(file=sys.stdout)
      raise
   return covers

def getCoverInfo(self, imageNode):
   cover = {}
   cover["url"] = imageNode.getElementsByTagName("URL")[0].childNodes[0].data
   cover["w"] = imageNode.getElementsByTagName("Height")[0].childNodes[0].data
   cover["h"] = imageNode.getElementsByTagName("Width")[0].childNodes[0].data
   return cover

def getURL(self, artist, album, keywords):
   d = {}
   d['baseURL'] = self.BASE_URLS['US']
   d['accessKey'] = self.licenseKey
   d['operation'] = 'ItemSearch'
   d['searchIndex'] = 'Music'
   d['responseGroup'] = 'Images'
   d['keywords'] = urllib.quote_plus(keywords)
   d['artist'] = urllib.quote_plus(artist)
   d['title'] = urllib.quote_plus(album)
   return self.FULL_URL.substitute(d)

def main():
aca = AmazonCoverArt()
covers = aca.search('Elvis Costello', 'My Aim Is True')
for cover in covers:
   print cover["url"]

if __name__ == '__main__':
main()