release.py

   1 from xml.dom import minidom, Node
   2 from zeroinstall.injector import namespaces, model
   3 import time, re
   4
   5 date_format = '\d{4}-\d{2}-\d{2}'
   6
   7 def set_interface_uri(data, uri):
   8         """Set the uri attribute on the root element."""
   9         doc = minidom.parseString(data)
  10         doc.documentElement.setAttribute('uri', uri)
  11         return doc.toxml()
  12
  13 def add_version(data, version):
  14         """Create a new <implementation> after the last one in the file."""
  15         doc = minidom.parseString(data)
  16         all_impls = doc.documentElement.getElementsByTagNameNS(namespaces.XMLNS_IFACE, 'implementation')
  17         if not all_impls:
  18                 raise Exception('No existing <implementation> elements found!')
  19         new_impl = doc.createElementNS(namespaces.XMLNS_IFACE, 'implementation')
  20         new_impl.setAttribute('version', version)
  21         new_impl.setAttribute('id', '.')
  22
  23         last_impl = all_impls[-1]
  24         previous = last_impl.previousSibling
  25         next = last_impl.nextSibling
  26         parent = last_impl.parentNode
  27         if previous and previous.nodeType == Node.TEXT_NODE:
  28                 parent.insertBefore(doc.createTextNode(previous.nodeValue), next)
  29         parent.insertBefore(new_impl, next)
  30         return doc.toxml()
  31
  32 def make_release(data, id, version, released, stability, main, arch):
  33         """Normally there's only one implementation, but we can cope with several."""
  34         if released == 'today': released = time.strftime('%Y-%m-%d')
  35         if released and released != 'Snapshot' and not re.match(date_format, released):
  36                 raise Exception('Invalid date format. Use YYYY-MM-DD.')
  37
  38         doc = minidom.parseString(data)
  39         unreleased = None
  40         all_impls = doc.documentElement.getElementsByTagNameNS(namespaces.XMLNS_IFACE, 'implementation')
  41         for x in all_impls:
  42                 _released = x.getAttribute('released')
  43                 if released is None or not re.match(date_format, _released):
  44                         if unreleased:
  45                                 raise Exception('Multiple unreleased implementations!')
  46                         unreleased = x
  47         if unreleased is None:
  48                 if len(all_impls) == 0:
  49                         raise Exception('No implementations in interface file!')
  50                 if len(all_impls) > 1:
  51                         raise Exception("Multiple implementations, but all are released. Aborting.")
  52                 unreleased = all_impls[0]
  53
  54         # In future, we may want to bulk change implementations...
  55         for x in [unreleased]:
  56                 if id is not None: x.setAttribute('id', id)
  57                 if version is not None: x.setAttribute('version', version)
  58                 if released is not None: x.setAttribute('released', released)
  59                 if stability is not None: x.setAttribute('stability', stability)
  60                 if main is not None: x.setAttribute('main', main)
  61                 if arch is not None: x.setAttribute('arch', arch)
  62
  63         return doc.toxml()