release.py

   1 from xml.dom import minidom, Node
   2 from zeroinstall.injector import namespaces
   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('utf-8')
  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         new_impl = doc.createElementNS(namespaces.XMLNS_IFACE, 'implementation')
  18         new_impl.setAttribute('version', version)
  19         new_impl.setAttribute('id', '.')
  20
  21         if not all_impls:
  22                 print 'No existing <implementation> elements found; creating first one!'
  23                 next = None
  24                 last_impl = doc.documentElement.childNodes[-1]
  25         else:
  26                 last_impl = all_impls[-1]
  27         previous = last_impl.previousSibling
  28         next = last_impl.nextSibling
  29         parent = last_impl.parentNode
  30         if previous and previous.nodeType == Node.TEXT_NODE:
  31                 parent.insertBefore(doc.createTextNode(previous.nodeValue), next)
  32         parent.insertBefore(new_impl, next)
  33         return doc.toxml('utf-8')
  34
  35 def set_attributes(data, selected_version, id = None, version = None, released = None, stability = None, main = None, arch = None):
  36         """Normally there's only one implementation, but we can cope with several."""
  37         if released == 'today': released = time.strftime('%Y-%m-%d')
  38         if released and released != 'Snapshot' and not re.match(date_format, released):
  39                 raise Exception('Invalid date format. Use YYYY-MM-DD.')
  40
  41         doc = minidom.parseString(data)
  42         all_impls = doc.documentElement.getElementsByTagNameNS(namespaces.XMLNS_IFACE, 'implementation')
  43
  44         if selected_version == None:
  45                 # Select the version with no "released" attribute
  46                 unreleased = None
  47                 for x in all_impls:
  48                         _released = x.getAttribute('released')
  49                         if released is None or not re.match(date_format, _released):
  50                                 if unreleased:
  51                                         raise Exception('Multiple unreleased implementations!')
  52                                 unreleased = x
  53                 if unreleased is None:
  54                         if len(all_impls) == 0:
  55                                 raise Exception('No implementations in feed file!')
  56                         if len(all_impls) > 1:
  57                                 raise Exception("Multiple implementations, but all are released. Aborting.")
  58                         unreleased = all_impls[0]
  59                 versions_to_change = [unreleased]
  60         else:
  61                 # Select the version the user asked for
  62                 versions_to_change = []
  63                 for x in all_impls:
  64                         node = x
  65                         while True:
  66                                 _version = node.getAttribute('version')
  67                                 if _version is not None: break
  68                                 node = node.getParentNode()
  69                                 assert node.localName == 'group'
  70                         if _version == selected_version:
  71                                 versions_to_change.append(x)
  72                 if not versions_to_change:
  73                         if len(all_impls) == 0:
  74                                 raise Exception('No implementations in feed file!')
  75                         raise Exception("No implementations with version=%s" % selected_version)
  76
  77         # In future, we may want to bulk change implementations...
  78         for x in versions_to_change:
  79                 if id is not None: x.setAttribute('id', id)
  80                 if released is not None:
  81                         if released:
  82                                 x.setAttribute('released', released)
  83                         elif x.hasAttribute('released'):
  84                                 x.removeAttribute('released')
  85                 if stability is not None: x.setAttribute('stability', stability)
  86                 if main is not None: x.setAttribute('main', main)
  87                 if arch is not None: x.setAttribute('arch', arch)
  88                 if version is not None:
  89                         x.setAttribute('version', version)
  90                 if x.hasAttribute('version-modifier'):
  91                         x.removeAttribute('version-modifier')
  92
  93         return doc.toxml('utf-8')