/usr/share/pyshared/suds/mx/appender.py is in python-suds 0.4.1-2ubuntu1.1.
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# it under the terms of the (LGPL) GNU Lesser General Public License as
# published by the Free Software Foundation; either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library Lesser General Public License for more details at
# ( http://www.gnu.org/licenses/lgpl.html ).
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# written by: Jeff Ortel ( jortel@redhat.com )
"""
Provides appender classes for I{marshalling}.
"""
from logging import getLogger
from suds import *
from suds.mx import *
from suds.sudsobject import footprint
from suds.sudsobject import Object, Property
from suds.sax.element import Element
from suds.sax.text import Text
from copy import deepcopy
log = getLogger(__name__)
class Matcher:
"""
Appender matcher.
@ivar cls: A class object.
@type cls: I{classobj}
"""
def __init__(self, cls):
"""
@param cls: A class object.
@type cls: I{classobj}
"""
self.cls = cls
def __eq__(self, x):
if self.cls is None:
return ( x is None )
else:
return isinstance(x, self.cls)
class ContentAppender:
"""
Appender used to add content to marshalled objects.
@ivar default: The default appender.
@type default: L{Appender}
@ivar appenders: A I{table} of appenders mapped by class.
@type appenders: I{table}
"""
def __init__(self, marshaller):
"""
@param marshaller: A marshaller.
@type marshaller: L{suds.mx.core.Core}
"""
self.default = PrimativeAppender(marshaller)
self.appenders = (
(Matcher(None),
NoneAppender(marshaller)),
(Matcher(null),
NoneAppender(marshaller)),
(Matcher(Property),
PropertyAppender(marshaller)),
(Matcher(Object),
ObjectAppender(marshaller)),
(Matcher(Element),
ElementAppender(marshaller)),
(Matcher(Text),
TextAppender(marshaller)),
(Matcher(list),
ListAppender(marshaller)),
(Matcher(tuple),
ListAppender(marshaller)),
(Matcher(dict),
DictAppender(marshaller)),
)
def append(self, parent, content):
"""
Select an appender and append the content to parent.
@param parent: A parent node.
@type parent: L{Element}
@param content: The content to append.
@type content: L{Content}
"""
appender = self.default
for a in self.appenders:
if a[0] == content.value:
appender = a[1]
break
appender.append(parent, content)
class Appender:
"""
An appender used by the marshaller to append content.
@ivar marshaller: A marshaller.
@type marshaller: L{suds.mx.core.Core}
"""
def __init__(self, marshaller):
"""
@param marshaller: A marshaller.
@type marshaller: L{suds.mx.core.Core}
"""
self.marshaller = marshaller
def node(self, content):
"""
Create and return an XML node that is qualified
using the I{type}. Also, make sure all referenced namespace
prefixes are declared.
@param content: The content for which proccessing has ended.
@type content: L{Object}
@return: A new node.
@rtype: L{Element}
"""
return self.marshaller.node(content)
def setnil(self, node, content):
"""
Set the value of the I{node} to nill.
@param node: A I{nil} node.
@type node: L{Element}
@param content: The content for which proccessing has ended.
@type content: L{Object}
"""
self.marshaller.setnil(node, content)
def setdefault(self, node, content):
"""
Set the value of the I{node} to a default value.
@param node: A I{nil} node.
@type node: L{Element}
@param content: The content for which proccessing has ended.
@type content: L{Object}
@return: The default.
"""
return self.marshaller.setdefault(node, content)
def optional(self, content):
"""
Get whether the specified content is optional.
@param content: The content which to check.
@type content: L{Content}
"""
return self.marshaller.optional(content)
def suspend(self, content):
"""
Notify I{marshaller} that appending this content has suspended.
@param content: The content for which proccessing has been suspended.
@type content: L{Object}
"""
self.marshaller.suspend(content)
def resume(self, content):
"""
Notify I{marshaller} that appending this content has resumed.
@param content: The content for which proccessing has been resumed.
@type content: L{Object}
"""
self.marshaller.resume(content)
def append(self, parent, content):
"""
Append the specified L{content} to the I{parent}.
@param content: The content to append.
@type content: L{Object}
"""
self.marshaller.append(parent, content)
class PrimativeAppender(Appender):
"""
An appender for python I{primative} types.
"""
def append(self, parent, content):
if content.tag.startswith('_'):
attr = content.tag[1:]
value = tostr(content.value)
if value:
parent.set(attr, value)
else:
child = self.node(content)
child.setText(tostr(content.value))
parent.append(child)
class NoneAppender(Appender):
"""
An appender for I{None} values.
"""
def append(self, parent, content):
child = self.node(content)
default = self.setdefault(child, content)
if default is None:
self.setnil(child, content)
parent.append(child)
class PropertyAppender(Appender):
"""
A L{Property} appender.
"""
def append(self, parent, content):
p = content.value
child = self.node(content)
child.setText(p.get())
parent.append(child)
for item in p.items():
cont = Content(tag=item[0], value=item[1])
Appender.append(self, child, cont)
class ObjectAppender(Appender):
"""
An L{Object} appender.
"""
def append(self, parent, content):
object = content.value
if self.optional(content) and footprint(object) == 0:
return
child = self.node(content)
parent.append(child)
for item in object:
cont = Content(tag=item[0], value=item[1])
Appender.append(self, child, cont)
class DictAppender(Appender):
"""
An python I{dict} appender.
"""
def append(self, parent, content):
d = content.value
if self.optional(content) and len(d) == 0:
return
child = self.node(content)
parent.append(child)
for item in d.items():
cont = Content(tag=item[0], value=item[1])
Appender.append(self, child, cont)
class ElementWrapper(Element):
"""
Element wrapper.
"""
def __init__(self, content):
Element.__init__(self, content.name, content.parent)
self.__content = content
def str(self, indent=0):
return self.__content.str(indent)
class ElementAppender(Appender):
"""
An appender for I{Element} types.
"""
def append(self, parent, content):
if content.tag.startswith('_'):
raise Exception('raw XML not valid as attribute value')
child = ElementWrapper(content.value)
parent.append(child)
class ListAppender(Appender):
"""
A list/tuple appender.
"""
def append(self, parent, content):
collection = content.value
if len(collection):
self.suspend(content)
for item in collection:
cont = Content(tag=content.tag, value=item)
Appender.append(self, parent, cont)
self.resume(content)
class TextAppender(Appender):
"""
An appender for I{Text} values.
"""
def append(self, parent, content):
if content.tag.startswith('_'):
attr = content.tag[1:]
value = tostr(content.value)
if value:
parent.set(attr, value)
else:
child = self.node(content)
child.setText(content.value)
parent.append(child)
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