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):
   8         """Normally there's only one implementation, but we can cope with several."""
   9         if released and released != 'Snapshot' and not re.match(date_format, released):
  10                 raise Exception('Invalid date format. Use YYYY-MM-DD.')
  11
  12         doc = minidom.parseString(data)
  13         unreleased = None
  14         all_impls = doc.documentElement.getElementsByTagNameNS(namespaces.XMLNS_IFACE, 'implementation')
  15         for x in all_impls:
  16                 _released = x.getAttribute('released')
  17                 if released is None or not re.match(date_format, _released):
  18                         if unreleased:
  19                                 raise Exception('Multiple unreleased implementations!')
  20                         unreleased = x
  21         if unreleased is None:
  22                 if len(all_impls) == 0:
  23                         raise Exception('No implementations in interface file!')
  24                 if len(all_impls) > 1:
  25                         raise Exception("Multiple implementations, but all are released. Aborting.")
  26                 unreleased = all_impls[0]
  27
  28         # In future, we may want to bulk change implementations...
  29         for x in [unreleased]:
  30                 if id is not None: x.setAttribute('id', id)
  31                 if version is not None: x.setAttribute('version', version)
  32                 if released is not None: x.setAttribute('released', released)
  33                 if stability is not None: x.setAttribute('stability', stability)
  34
  35         return doc.toxml()