stable.py

   1 from xml.dom import minidom
   2 from zeroinstall.injector import namespaces, model
   3 from logging import warn
   4
   5 def mark_stable(data):
   6         """Find the single release marked as 'testing' and make it 'stable'."""
   7         doc = minidom.parseString(data)
   8         testing = []
   9         all_impls = doc.documentElement.getElementsByTagNameNS(namespaces.XMLNS_IFACE, 'implementation')
  10         for x in all_impls:
  11                 if get_stability(x) == 'testing':
  12                         testing.append((get_version(x), x))
  13         if len(testing) == 0:
  14                 raise Exception('No implementations are currently "testing"!')
  15
  16         testing = sorted(testing)
  17         higest_version = testing[-1][0]
  18         latest_testing = [impl for version, impl in testing if version == higest_version]
  19
  20         if len(latest_testing) < len(testing):
  21                 warn("Multiple 'testing' versions - changing %d (of %d) with version %s", len(latest_testing), len(testing), model.format_version(higest_version))
  22
  23         for impl in latest_testing:
  24                 impl.setAttribute('stability', 'stable')
  25
  26         return doc.toxml('utf-8')
  27
  28 def get_stability(x):
  29         root = x.ownerDocument.documentElement
  30         while x is not root:
  31                 stab = x.getAttribute('stability')
  32                 if stab: return stab
  33                 x = x.parentNode
  34         return 'testing'
  35
  36 def get_version(x):
  37         root = x.ownerDocument.documentElement
  38         while x is not root:
  39                 version = x.getAttribute('version')
  40                 if version:
  41                         mod = x.getAttribute('version-modifier')
  42                         if mod: version += mod
  43                         return model.parse_version(version)
  44                 x = x.parentNode
  45         raise Exception("No version on %s" % x)