injector/writer.py

   1 import os
   2 from xml.dom import minidom, XMLNS_NAMESPACE
   3
   4 import basedir
   5
   6 from model import *
   7
   8 from namespaces import config_site, config_prog, XMLNS_IFACE
   9
  10 def add_text(parent, name, text):
  11         doc = parent.ownerDocument
  12         element = doc.createElementNS(XMLNS_IFACE, name)
  13         parent.appendChild(element)
  14         element.appendChild(doc.createTextNode(text))
  15
  16 def add_impl(parent, impl):
  17         doc = parent.ownerDocument
  18         node = doc.createElementNS(XMLNS_IFACE, 'implementation')
  19         parent.appendChild(node)
  20         node.setAttribute('version', impl.get_version())
  21         node.setAttribute('path', impl.path)
  22         if impl.upstream_stability:
  23                 node.setAttribute('stability', str(impl.upstream_stability))
  24         if impl.user_stability:
  25                 node.setAttribute('user_stability', str(impl.user_stability))
  26         if impl.size:
  27                 node.setAttribute('size', str(impl.size))
  28
  29         for dep in impl.dependencies.values():
  30                 depends = doc.createElementNS(XMLNS_IFACE, 'requires')
  31                 depends.setAttribute('interface', dep.get_interface().uri)
  32                 node.appendChild(depends)
  33                 for bin in dep.bindings:
  34                         if isinstance(bin, EnvironmentBinding):
  35                                 binding = doc.createElementNS(XMLNS_IFACE, 'environment')
  36                                 binding.setAttribute('name', bin.name)
  37                                 binding.setAttribute('insert', bin.insert)
  38                                 depends.appendChild(binding)
  39                         else:
  40                                 print "Warning, unknown binding type", bin
  41
  42 def save_interface(interface):
  43         assert interface.uptodate
  44
  45         path = basedir.save_config_path(config_site, config_prog, 'interfaces')
  46         path = os.path.join(path, escape(interface.uri))
  47         #print "Save to", path
  48
  49         impl = minidom.getDOMImplementation()
  50         doc = impl.createDocument(XMLNS_IFACE, 'interface', None)
  51
  52         root = doc.documentElement
  53         root.setAttributeNS(XMLNS_NAMESPACE, 'xmlns', XMLNS_IFACE)
  54
  55         add_text(root, 'name', interface.name)
  56         add_text(root, 'summary', interface.summary)
  57         add_text(root, 'description', interface.description)
  58         if interface.stability_policy:
  59                 root.setAttribute('stability_policy', str(interface.stability_policy))
  60
  61         impls = interface.implementations.values()
  62         impls.sort()
  63         for impl in impls:
  64                 add_impl(root, impl)
  65
  66         doc.writexml(file(path + '.new', 'w'), addindent = " ", newl = '\n')
  67         os.rename(path + '.new', path)