| 166 |
166 |
|
| 167 |
167 |
##### Querying/creating XML trees
|
| 168 |
168 |
|
| 169 |
|
def get(root, xpath, create=False, last_only=None, limit=1):
|
|
169 |
def get(root, xpath, create=False, last_only=None, limit=1, allow_rooted=True):
|
| 170 |
170 |
'''Warning: The last_only optimization may put data that should be together
|
| 171 |
171 |
into separate nodes'''
|
| 172 |
172 |
if last_only == None: last_only = create
|
| 173 |
173 |
if limit == None or limit > 1: last_only = False
|
| 174 |
174 |
if util.is_str(xpath): xpath = parse(xpath)
|
| 175 |
175 |
|
|
176 |
# Handle edge cases
|
| 176 |
177 |
if xpath == []: return [root]
|
| 177 |
178 |
if create and not is_positive(xpath): return []
|
|
179 |
|
|
180 |
# Define vars
|
| 178 |
181 |
doc = root.ownerDocument
|
|
182 |
if allow_rooted and is_rooted(xpath): root = doc.documentElement
|
| 179 |
183 |
elem = xpath[0]
|
| 180 |
184 |
|
| 181 |
185 |
# Find possible matches
|
| ... | ... | |
| 251 |
255 |
else: last_only = False
|
| 252 |
256 |
set_id(xpath, id_)
|
| 253 |
257 |
else: root = node
|
| 254 |
|
next += get(root, xpath, create, last_only, limit)
|
|
258 |
next += get(root, xpath, create, last_only, limit, allow_rooted=False)
|
| 255 |
259 |
|
| 256 |
260 |
for branch in elem.other_branches:
|
| 257 |
261 |
branch = copy.deepcopy(branch)
|
| 258 |
262 |
set_value(branch, value_)
|
| 259 |
|
next += get(node, branch, create, last_only, limit)
|
|
263 |
next += get(node, branch, create, last_only, limit,
|
|
264 |
allow_rooted=False)
|
| 260 |
265 |
|
| 261 |
266 |
return next
|
| 262 |
267 |
|
xpath.py: get(): Go to root when empty element is encountered at the beginning of an XPath. Added allow_rooted parameter to turn off this functionality when XPaths with a leading slash should not be considered rooted.