| 1 |
996
|
aaronmk
|
# XML "function" nodes that transform their contents
|
| 2 |
86
|
aaronmk
|
|
| 3 |
111
|
aaronmk
|
import datetime
|
| 4 |
968
|
aaronmk
|
import re
|
| 5 |
111
|
aaronmk
|
|
| 6 |
818
|
aaronmk
|
import dates
|
| 7 |
300
|
aaronmk
|
import exc
|
| 8 |
917
|
aaronmk
|
import maps
|
| 9 |
827
|
aaronmk
|
import term
|
| 10 |
86
|
aaronmk
|
import xml_dom
|
| 11 |
|
|
|
| 12 |
995
|
aaronmk
|
##### Exceptions
|
| 13 |
|
|
|
| 14 |
962
|
aaronmk
|
class SyntaxException(Exception):
|
| 15 |
797
|
aaronmk
|
def __init__(self, cause):
|
| 16 |
962
|
aaronmk
|
Exception.__init__(self, 'Invalid XML function syntax: '
|
| 17 |
|
|
+exc.str_(cause))
|
| 18 |
278
|
aaronmk
|
|
| 19 |
843
|
aaronmk
|
class FormatException(SyntaxException): pass
|
| 20 |
|
|
|
| 21 |
995
|
aaronmk
|
##### Functions
|
| 22 |
|
|
|
| 23 |
|
|
funcs = {}
|
| 24 |
|
|
|
| 25 |
|
|
def process(node, on_error=exc.raise_):
|
| 26 |
|
|
for child in xml_dom.NodeElemIter(node): process(child, on_error)
|
| 27 |
|
|
name = node.tagName
|
| 28 |
|
|
if name.startswith('_') and name in funcs:
|
| 29 |
|
|
try: value = funcs[name](xml_dom.NodeTextEntryIter(node))
|
| 30 |
|
|
except SyntaxException, e:
|
| 31 |
|
|
str_ = str(node)
|
| 32 |
|
|
exc.add_msg(e, 'function:\n'+str_)
|
| 33 |
|
|
xml_dom.replace(node, node.ownerDocument.createComment(
|
| 34 |
|
|
'\n'+term.emph_multiline(str_)))
|
| 35 |
|
|
on_error(e)
|
| 36 |
|
|
else: xml_dom.replace_with_text(node, value)
|
| 37 |
|
|
|
| 38 |
86
|
aaronmk
|
def map_items(func, items):
|
| 39 |
|
|
return [(name, func(value)) for name, value in items]
|
| 40 |
|
|
|
| 41 |
278
|
aaronmk
|
def conv_items(type_, items):
|
| 42 |
787
|
aaronmk
|
def conv(val):
|
| 43 |
|
|
try: return type_(val)
|
| 44 |
|
|
except ValueError, e: raise SyntaxException(e)
|
| 45 |
793
|
aaronmk
|
return map_items(conv, xml_dom.TextEntryOnlyIter(items))
|
| 46 |
278
|
aaronmk
|
|
| 47 |
995
|
aaronmk
|
#### XML functions
|
| 48 |
|
|
|
| 49 |
|
|
# Function names must start with _ to avoid collisions with real tags
|
| 50 |
|
|
# Functions take arguments (items)
|
| 51 |
|
|
|
| 52 |
|
|
def _ignore(items):
|
| 53 |
994
|
aaronmk
|
'''Used to "comment out" an XML subtree'''
|
| 54 |
|
|
return None
|
| 55 |
995
|
aaronmk
|
funcs['_ignore'] = _ignore
|
| 56 |
994
|
aaronmk
|
|
| 57 |
995
|
aaronmk
|
def _alt(items):
|
| 58 |
113
|
aaronmk
|
items = list(items)
|
| 59 |
|
|
items.sort()
|
| 60 |
|
|
return items[0][1] # value of lowest-numbered item
|
| 61 |
995
|
aaronmk
|
funcs['_alt'] = _alt
|
| 62 |
113
|
aaronmk
|
|
| 63 |
995
|
aaronmk
|
def _merge(items):
|
| 64 |
917
|
aaronmk
|
items = list(items)
|
| 65 |
|
|
items.sort()
|
| 66 |
|
|
return maps.merge_values(*[v for k, v in items])
|
| 67 |
995
|
aaronmk
|
funcs['_merge'] = _merge
|
| 68 |
917
|
aaronmk
|
|
| 69 |
995
|
aaronmk
|
def _label(items):
|
| 70 |
917
|
aaronmk
|
items = dict(conv_items(str, items)) # get *once* from iter and check types
|
| 71 |
|
|
try:
|
| 72 |
|
|
label = items['label']
|
| 73 |
|
|
value = items['value']
|
| 74 |
|
|
except KeyError, e: raise SyntaxException(e)
|
| 75 |
|
|
return label+': '+value
|
| 76 |
995
|
aaronmk
|
funcs['_label'] = _label
|
| 77 |
917
|
aaronmk
|
|
| 78 |
995
|
aaronmk
|
def _range(items):
|
| 79 |
278
|
aaronmk
|
items = dict(conv_items(float, items))
|
| 80 |
965
|
aaronmk
|
from_ = items.get('from', None)
|
| 81 |
|
|
to = items.get('to', None)
|
| 82 |
|
|
if from_ == None or to == None: return None
|
| 83 |
326
|
aaronmk
|
return str(to - from_)
|
| 84 |
995
|
aaronmk
|
funcs['_range'] = _range
|
| 85 |
86
|
aaronmk
|
|
| 86 |
995
|
aaronmk
|
def _avg(items):
|
| 87 |
86
|
aaronmk
|
count = 0
|
| 88 |
|
|
sum_ = 0.
|
| 89 |
278
|
aaronmk
|
for name, value in conv_items(float, items):
|
| 90 |
86
|
aaronmk
|
count += 1
|
| 91 |
|
|
sum_ += value
|
| 92 |
|
|
return str(sum_/count)
|
| 93 |
995
|
aaronmk
|
funcs['_avg'] = _avg
|
| 94 |
86
|
aaronmk
|
|
| 95 |
968
|
aaronmk
|
class CvException(Exception):
|
| 96 |
|
|
def __init__(self):
|
| 97 |
|
|
Exception.__init__(self, 'CV (coefficient of variation) values are only'
|
| 98 |
|
|
' allowed for ratio scale data '
|
| 99 |
|
|
'(see <http://en.wikipedia.org/wiki/Coefficient_of_variation>)')
|
| 100 |
|
|
|
| 101 |
995
|
aaronmk
|
def _noCV(items):
|
| 102 |
968
|
aaronmk
|
try: name, value = items.next()
|
| 103 |
|
|
except StopIteration: return None
|
| 104 |
|
|
if re.match('^(?i)CV *\d+$', value): raise SyntaxException(CvException())
|
| 105 |
|
|
return value
|
| 106 |
995
|
aaronmk
|
funcs['_noCV'] = _noCV
|
| 107 |
968
|
aaronmk
|
|
| 108 |
995
|
aaronmk
|
def _date(items):
|
| 109 |
917
|
aaronmk
|
items = conv_items(str, items) # get *once* from iter and check types
|
| 110 |
786
|
aaronmk
|
try: str_ = dict(items)['date']
|
| 111 |
|
|
except KeyError:
|
| 112 |
|
|
items = dict(filter(lambda (k, v): v != 0, conv_items(int, items)))
|
| 113 |
|
|
items.setdefault('year', 1900)
|
| 114 |
|
|
items.setdefault('month', 1)
|
| 115 |
|
|
items.setdefault('day', 1)
|
| 116 |
|
|
try: date = datetime.date(**items)
|
| 117 |
|
|
except ValueError, e: raise SyntaxException(e)
|
| 118 |
|
|
else:
|
| 119 |
324
|
aaronmk
|
try: year = float(str_)
|
| 120 |
|
|
except ValueError:
|
| 121 |
|
|
try: import dateutil.parser
|
| 122 |
|
|
except ImportError: return str_
|
| 123 |
|
|
try: date = dateutil.parser.parse(str_)
|
| 124 |
|
|
except ValueError, e: raise SyntaxException(e)
|
| 125 |
|
|
else: date = (datetime.date(int(year), 1, 1) +
|
| 126 |
|
|
datetime.timedelta(round((year % 1.)*365)))
|
| 127 |
818
|
aaronmk
|
try: return dates.strftime('%Y-%m-%d', date)
|
| 128 |
843
|
aaronmk
|
except ValueError, e: raise FormatException(e)
|
| 129 |
995
|
aaronmk
|
funcs['_date'] = _date
|
| 130 |
86
|
aaronmk
|
|
| 131 |
328
|
aaronmk
|
_name_parts_slices_items = [
|
| 132 |
|
|
('first', slice(None, 1)),
|
| 133 |
|
|
('middle', slice(1, -1)),
|
| 134 |
|
|
('last', slice(-1, None)),
|
| 135 |
|
|
]
|
| 136 |
|
|
name_parts_slices = dict(_name_parts_slices_items)
|
| 137 |
|
|
name_parts = [name for name, slice_ in _name_parts_slices_items]
|
| 138 |
|
|
|
| 139 |
995
|
aaronmk
|
def _name(items):
|
| 140 |
89
|
aaronmk
|
items = dict(items)
|
| 141 |
102
|
aaronmk
|
parts = []
|
| 142 |
328
|
aaronmk
|
for part in name_parts:
|
| 143 |
|
|
if part in items: parts.append(items[part])
|
| 144 |
102
|
aaronmk
|
return ' '.join(parts)
|
| 145 |
995
|
aaronmk
|
funcs['_name'] = _name
|
| 146 |
102
|
aaronmk
|
|
| 147 |
995
|
aaronmk
|
def _namePart(items):
|
| 148 |
328
|
aaronmk
|
out_items = []
|
| 149 |
|
|
for part, value in items:
|
| 150 |
|
|
try: slice_ = name_parts_slices[part]
|
| 151 |
|
|
except KeyError, e: raise SyntaxException(e)
|
| 152 |
|
|
else: out_items.append((part, ' '.join(value.split(' ')[slice_])))
|
| 153 |
995
|
aaronmk
|
return _name(out_items)
|
| 154 |
|
|
funcs['_namePart'] = _namePart
|
