/usr/lib/python2.7/dist-packages/simpletal/simpleElementTree.py is in python-simpletal 4.1-9.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | """ ElementTree integration for SimpleTAL
Copyright (c) 2004 Colin Stewart (http://www.owlfish.com/)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
If you make any bug fixes or feature enhancements please let me know!
The parseFile function in this module will return a Element object that
implements simpleTALES.ContextVariable and makes XML documents available
with the following path logic:
- Accessing Element directly returns the Element.text value
- Accessing Element/find and Element/findall passes the text
(up to attribute accessor) to the corresponding Element function
- Accessing the Element@name access the attribute "name"
- Accessing Element/anotherElement is a short-cut for
Element/find/anotherElement
Module Dependencies: simpleTALES, elementtree
"""
from elementtree import ElementTree
import simpleTALES
class SimpleElementTreeVar (ElementTree._ElementInterface, simpleTALES.ContextVariable):
def __init__(self, tag, attrib):
ElementTree._ElementInterface.__init__(self, tag, attrib)
simpleTALES.ContextVariable.__init__(self)
def value (self, pathInfo = None):
if (pathInfo is not None):
pathIndex, paths = pathInfo
ourParams = paths[pathIndex:]
attributeName = None
if (len (ourParams) > 0):
# Look for attribute index
if (ourParams[-1].startswith ('@')):
# Attribute lookup
attributeName = ourParams [-1][1:]
ourParams = ourParams [:-1]
# Do we do a find?
activeElement = self
if len (ourParams) > 0:
# Look for a find or findall first
if (ourParams [0] == 'find'):
# Find the element if possible
activeElement = self.find ("/".join (ourParams [1:]))
elif (ourParams [0] == 'findall'):
# Short cut this
raise simpleTALES.ContextVariable (self.findall ("/".join (ourParams[1:])))
else:
# Assume that we wanted to use find
activeElement = self.find ("/".join (ourParams))
# Did we find an element and are we looking for an attribute?
if (attributeName is not None and activeElement is not None):
attrValue = activeElement.attrib.get (attributeName, None)
raise simpleTALES.ContextVariable (attrValue)
# Just return the element
if (activeElement is None):
# Wrap it
raise simpleTALES.ContextVariable (None)
raise activeElement
else:
return self
def __unicode__ (self):
return self.text
def __str__ (self):
return str (self.text)
def parseFile (file):
treeBuilder = ElementTree.TreeBuilder (element_factory = SimpleElementTreeVar)
xmlTreeBuilder = ElementTree.XMLTreeBuilder (target=treeBuilder)
if (not hasattr (file, 'read')):
ourFile = open (file)
xmlTreeBuilder.feed (ourFile.read())
ourFile.close()
else:
xmlTreeBuilder.feed (file.read())
return xmlTreeBuilder.close()
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