release.py

   1 from xml.dom import minidom
   2 from zeroinstall.injector import namespaces, model
   3 import time, re
   4
   5 date_format = '\d{4}-\d{2}-\d{2}'
   6
   7 def make_release(data, id, version, released, stability, main, arch):
   8         """Normally there's only one implementation, but we can cope with several."""
   9         if released == 'today': released = time.strftime('%Y-%m-%d')
  10         if released and released != 'Snapshot' and not re.match(date_format, released):
  11                 raise Exception('Invalid date format. Use YYYY-MM-DD.')
  12
  13         doc = minidom.parseString(data)
  14         unreleased = None
  15         all_impls = doc.documentElement.getElementsByTagNameNS(namespaces.XMLNS_IFACE, 'implementation')
  16         for x in all_impls:
  17                 _released = x.getAttribute('released')
  18                 if released is None or not re.match(date_format, _released):
  19                         if unreleased:
  20                                 raise Exception('Multiple unreleased implementations!')
  21                         unreleased = x
  22         if unreleased is None:
  23                 if len(all_impls) == 0:
  24                         raise Exception('No implementations in interface file!')
  25                 if len(all_impls) > 1:
  26                         raise Exception("Multiple implementations, but all are released. Aborting.")
  27                 unreleased = all_impls[0]
  28
  29         # In future, we may want to bulk change implementations...
  30         for x in [unreleased]:
  31                 if id is not None: x.setAttribute('id', id)
  32                 if version is not None: x.setAttribute('version', version)
  33                 if released is not None: x.setAttribute('released', released)
  34                 if stability is not None: x.setAttribute('stability', stability)
  35                 if main is not None: x.setAttribute('main', main)
  36                 if arch is not None: x.setAttribute('arch', arch)
  37
  38         return doc.toxml()