| 1 |
1341
|
aaronmk
|
# XPath "function" elements that transform their subpaths
|
| 2 |
|
|
|
| 3 |
1346
|
aaronmk
|
import util
|
| 4 |
1341
|
aaronmk
|
import xpath
|
| 5 |
|
|
|
| 6 |
|
|
##### Functions
|
| 7 |
|
|
|
| 8 |
|
|
funcs = {}
|
| 9 |
|
|
|
| 10 |
|
|
def process(path):
|
| 11 |
|
|
if path == []: return path
|
| 12 |
|
|
|
| 13 |
|
|
path[1:] = process(path[1:])
|
| 14 |
|
|
name = path[0].name
|
| 15 |
1343
|
aaronmk
|
if name.startswith('_') and name in funcs:
|
| 16 |
|
|
return funcs[name](path.pop(0).attrs, path)
|
| 17 |
1341
|
aaronmk
|
else: return path
|
| 18 |
|
|
|
| 19 |
|
|
#### XPath functions
|
| 20 |
|
|
|
| 21 |
|
|
# Function names must start with _ to avoid collisions with real tags
|
| 22 |
1343
|
aaronmk
|
# Functions take arguments (args, path)
|
| 23 |
1341
|
aaronmk
|
|
| 24 |
1346
|
aaronmk
|
def _forEach(args, path):
|
| 25 |
1351
|
aaronmk
|
'''Replaces '_val' in `do` with each item in the `in` list'''
|
| 26 |
|
|
in_, do = [a[0] for a in args]
|
| 27 |
|
|
assert in_.name == 'in'
|
| 28 |
|
|
assert do.name == 'do'
|
| 29 |
|
|
in_ = in_.attrs
|
| 30 |
|
|
do = do.value
|
| 31 |
1343
|
aaronmk
|
|
| 32 |
|
|
for_path = []
|
| 33 |
1351
|
aaronmk
|
for with_, in in_: for_path += xpath.parse(do.replace('_val', with_.name))
|
| 34 |
1343
|
aaronmk
|
return for_path + path
|
| 35 |
1346
|
aaronmk
|
funcs['_forEach'] = _forEach
|
