ISCE_INSAR/components/isceobj/XmlUtil/xmlUtils.py

139 lines
4.0 KiB
Python
Executable File

#!/usr/bin/env python3
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Copyright 2011 California Institute of Technology. ALL RIGHTS RESERVED.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# United States Government Sponsorship acknowledged. This software is subject to
# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
# (No [Export] License Required except when exporting to an embargoed country,
# end user, or in support of a prohibited end use). By downloading this software,
# the user agrees to comply with all applicable U.S. export laws and regulations.
# The user has the responsibility to obtain export licenses, or other export
# authority as may be required before exporting this software to any 'EAR99'
# embargoed foreign country or citizen of those countries.
#
# Author: Eric Gurrola
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
import xml.etree.ElementTree as ET
from collections import UserDict
class OrderedDict(UserDict):
def __init__(self, adict = None):
self._keys = []
UserDict.__init__(self, adict)
def __delitem__(self, key):
UserDict.__delitem__(self, key)
self._keys.remove(key)
def __setitem__(self, key, item):
UserDict.__setitem__(self, key, item)
if key not in self._keys: self._keys.append(key)
def clear(self):
UserDict.clear(self)
self._keys = []
def copy(self):
adict = UserDict.copy(self)
adict._keys = self._keys[:]
return adict
def items(self):
return zip(self._keys, self.values())
def keys(self):
return self._keys
def popitem(self):
try:
key = self._keys[-1]
except IndexError:
raise KeyError('dictionary is empty')
val = self[key]
del self[key]
return (key, val)
def setdefault(self, key, failobj = None):
UserDict.setdefault(self, key, failobj)
if key not in self._keys: self._keys.append(key)
def update(self, adict):
UserDict.update(self, adict)
for key in adict.keys():
if key not in self._keys: self._keys.append(key)
def values(self):
return map(self.get, self._keys)
def dict_to_xml(adict,file):
a = ET.Element('') # something to hang nodes on
a = dict_to_et(a,adict)
et = list(a)[0]
indent(et)
tree = ET.ElementTree(et)
tree.write(file)
def dict_to_et(node,adict):
for key, val in adict.items():
if isinstance(val,UserDict) or isinstance(val,dict):
subnode = ET.Element(key)
node.append(subnode)
subnode = dict_to_et(subnode,val)
else:
subnode = ET.Element(key)
node.append(subnode)
subnode.text = str(val)
return node
def indent(elem, depth = None,last = None):
if depth == None:
depth = [0]
if last == None:
last = False
tab = ' '*4
if(len(elem)):
depth[0] += 1
elem.text = '\n' + (depth[0])*tab
lenEl = len(elem)
lastCp = False
for i in range(lenEl):
if(i == lenEl - 1):
lastCp = True
indent(elem[i],depth,lastCp)
if(not last):
elem.tail = '\n' + (depth[0])*tab
else:
depth[0] -= 1
elem.tail = '\n' + (depth[0])*tab
else:
if(not last):
elem.tail = '\n' + (depth[0])*tab
else:
depth[0] -= 1
elem.tail = '\n' + (depth[0])*tab