def parse_settings(settings, conversion_map={}, defaults={}, required=(),
prefix=None, strip_prefix=True):
"""Convert the values of ``settings``.
To convert only a subset of the settings, pass ``prefix``; only the
settings with a key matching ``prefix`` will be returned (see
:func:`get_items_with_key_prefix` for details).
Settings passed via ``defaults`` will be added if they're not
already present in ``settings`` (and they'll be converted too).
Required fields can be listed in ``required``. If any required
fields are missing, a ``ValueError`` will be raised.
For each setting...
- If the key for the setting specifies a converter via the
``(converter)key`` syntax, the specified converter will be
called to convert its value (the converter must be a builtin
or a function from :mod:`tangled.converters`).
- If the key for the setting is in ``conversion_map``, the
function it maps to will be used to convert its value.
- If the special key '*' is in ``conversion_map``, the function
it maps to will be used to convert the setting.
- Otherwise, the value will be used as is (i.e., as a string).
The original ``settings`` dict will not be changed.
"""
parsed_settings = {}
if prefix is not None:
settings = get_items_with_key_prefix(settings, prefix, strip_prefix)
for k, v in defaults.items():
settings.setdefault(k, v)
for k, v in settings.items():
if isinstance(v, str):
match = CONVERTER_KEY_RE.search(k)
if match:
k = match.group('k')
converter = match.group('converter')
converter = converters.get_converter(converter)
elif k in conversion_map:
converter = converters.get_converter(conversion_map[k])
elif '*' in conversion_map:
converter = converters.get_converter(conversion_map['*'])
else:
converter = lambda v: v
v = converter(v)
parsed_settings[k] = v
if required:
check_required(parsed_settings, required)
return parsed_settings
def process_ways(self):
"""Process ways"""
get_tag = self.get_tag
normalize_street_name = self.normalize_street_name
bool_converter = get_converter('bool')
# TODO: Change oneway from bool to (-1, 0, 1)?
# 0 => not a one way
# 1 => one way in node order
# -1 => one way in reverse node order
def oneway_converter(v):
try:
return bool_converter(v)
except ValueError:
return True
way_id = 0
rows = []
empty_tags = []
def insert():
self.engine.execute(STREET_TABLE.insert(), rows)
rows.clear()
self.engine.execute(STREET_TABLE.delete())
for el in self.iter_ways():
osm_id = el['id']
node_ids = el['nodes']
tags = el.get('tags', empty_tags)
name = get_tag(tags, 'name', normalize_street_name)
highway = get_tag(tags, 'highway')
bicycle = get_tag(tags, 'bicycle')
cycleway = get_tag(tags, 'cycleway')
foot = get_tag(tags, 'foot')
sidewalk = get_tag(tags, 'sidewalk')
oneway = get_tag(tags, 'oneway', oneway_converter, False)
oneway_bicycle = get_tag(tags, 'oneway:bicycle', oneway_converter)
if oneway_bicycle is None:
oneway_bicycle = get_tag(tags, 'bicycle:oneway', oneway_converter)
if oneway_bicycle is None:
oneway_bicycle = oneway
node_q = NODE_TABLE.select()
node_q = node_q.where(NODE_TABLE.c.id.in_(node_ids))
node_map = {n.id: n for n in self.engine.execute(node_q)}
nodes = [node_map[i] for i in node_ids]
way = []
ways = []
last_i = len(nodes) - 1
for i, node in enumerate(nodes):
way.append(node)
if len(way) > 1 and node.is_intersection:
ways.append(way)
if i < last_i:
way = [node]
for i, way in enumerate(ways):
way_id += 1
start_node_id = way[0].id
end_node_id = way[-1].id
geom = LineString((n.geom.coords[0] for n in way))
rows.append({
'id': way_id,
'osm_id': osm_id,
'osm_seq': i,
'geom': geom,
'start_node_id': start_node_id,
'end_node_id': end_node_id,
'name': name,
'highway': highway,
'bicycle': bicycle,
'cycleway': cycleway,
'foot': foot,
'sidewalk': sidewalk,
'oneway': oneway,
'oneway_bicycle': oneway_bicycle,
})
if len(rows) > 500:
insert()
if rows:
insert()
def __init__(self, name, factory, path, methods=(), method_name=None,
add_slash=False):
if not path.startswith('/'):
path = '/' + path
if path == '/':
add_slash = False
else:
if path.endswith('/'):
add_slash = True
elif add_slash:
path = '{}/'.format(path)
self.name = name
self.factory = factory
self.path = path # normalized path
self.methods = set(as_tuple(methods, sep=','))
self.method_name = method_name
self.add_slash = add_slash
urlvars_info = {}
path_regex = []
format_string = []
i = 0
for match in re.finditer(self.urlvar_regex, path):
info = match.groupdict()
identifier = info['identifier']
if identifier in urlvars_info:
raise ValueError('{} already present'.format(identifier))
regex = info['regex'] or r'[\w-]+'
converter = info['converter']
if converter:
if ':' in converter:
converter = load_object(converter)
else:
converter = get_converter(converter)
else:
converter = str
urlvars_info[identifier] = {'regex': regex, 'converter': converter}
# Get the non-matching part of the string after the previous
# match and before the current match.
s, e = match.span()
if i != s:
before_match = path[i:s]
path_regex.append(before_match)
format_string.append(before_match)
i = e
path_regex.append(r'(?P<{}>{})'.format(identifier, regex))
format_string.extend(('{', identifier, '}'))
if i != len(path):
remainder = path[i:]
path_regex.append(remainder)
format_string.append(remainder)
path_regex = ''.join(path_regex)
self.urlvars_info = urlvars_info
self.segments = path_regex.strip('/').split('/')
self.format_string = ''.join(format_string)
if add_slash:
path_regex = r'{}(?:/?)'.format(path_regex.rstrip('/'))
self.path_regex = path_regex
