171 lines
4.1 KiB
Python
171 lines
4.1 KiB
Python
from flask import current_app, request
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from itertools import islice
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import os.path
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import json
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import math
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import user_agents
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import re
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import pattern.en
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metres_per_mile = 1609.344
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feet_per_metre = 3.28084
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feet_per_mile = 5280
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def chunk(it, size):
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it = iter(it)
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return iter(lambda: tuple(islice(it, size)), ())
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def flatten(l):
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return [item for sublist in l for item in sublist]
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def drop_start(s, start):
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assert s.startswith(start)
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return s[len(start) :]
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def remove_start(s, start):
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return s[len(start) :] if s.startswith(start) else s
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def normalize_url(url):
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for start in "http://", "https://", "www.":
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url = remove_start(url, start)
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return url.rstrip("/")
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def contains_digit(s):
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return any(c.isdigit() for c in s)
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def cache_dir():
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return current_app.config["CACHE_DIR"]
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def cache_filename(filename):
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return os.path.join(cache_dir(), filename)
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def load_from_cache(filename):
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return json.load(open(cache_filename(filename)))
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def get_radius(default=1000):
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arg_radius = request.args.get("radius")
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return int(arg_radius) if arg_radius and arg_radius.isdigit() else default
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def get_int_arg(name):
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if name in request.args and request.args[name].isdigit():
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return int(request.args[name])
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def calc_chunk_size(area_in_sq_km, size=22):
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side = math.sqrt(area_in_sq_km)
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return max(1, math.ceil(side / size))
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def file_missing_or_empty(filename):
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return os.path.exists(filename) or os.stat(filename).st_size == 0
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def is_bot():
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""" Is the current request from a web robot? """
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ua = request.headers.get("User-Agent")
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return ua and user_agents.parse(ua).is_bot
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def log_location():
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return current_app.config["LOG_DIR"]
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def good_location():
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return os.path.join(log_location(), "complete")
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def capfirst(value):
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""" Uppercase first letter of string, leave rest as is. """
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return value[0].upper() + value[1:] if value else value
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def any_upper(value):
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return any(c.isupper() for c in value)
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def find_log_file(place):
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start = f"{place.place_id}_"
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for f in os.scandir(good_location()):
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if f.name.startswith(start):
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return f.path
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def get_free_space(config):
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s = os.statvfs(config["FREE_SPACE_PATH"])
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return s.f_bsize * s.f_bavail
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def display_distance(units, dist):
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if units in ("miles_and_feet", "miles_and_yards"):
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total_feet = dist * feet_per_metre
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miles = total_feet / feet_per_mile
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if miles > 0.5:
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return f"{miles:,.2f} miles"
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else:
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return {
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"miles_and_feet": f"{total_feet:,.0f} feet",
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"miles_and_yards": f"{total_feet / 3:,.0f} yards",
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}[units]
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if units == "miles_and_metres":
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miles = dist / metres_per_mile
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return f"{miles:,.2f} miles" if miles > 0.5 else f"{dist:,.0f} metres"
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if units == "km_and_metres":
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units = "km" if dist > 500 else "metres"
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if units == "metres":
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return f"{dist:,.0f} m"
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if units == "km":
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return f"{dist / 1000:,.2f} km"
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re_range = re.compile(r"\b(\d+) ?(?:to|-) ?(\d+)\b", re.I)
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re_number_list = re.compile(r"\b([\d, ]+) (?:and|&) (\d+)\b", re.I)
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re_number = re.compile(r"^(?:No\.?|Number)? ?(\d+)\b")
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def is_in_range(address_range, address):
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m_number = re_number.match(address)
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if not m_number:
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return False
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m_range = re_range.search(address_range)
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if m_range:
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start, end = int(m_range.group(1)), int(m_range.group(2))
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if re_range.search(address):
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return False
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return start <= int(m_number.group(1)) <= end
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m_list = re_number_list.search(address_range)
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if m_list:
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numbers = {n.strip() for n in m_list.group(1).split(",")} | {m_list.group(2)}
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if re_number_list.search(address):
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return False
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return m_number.group(1) in numbers
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return False
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def pluralize_label(label):
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text = label["value"]
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if label["language"] != "en":
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return text
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# pattern.en.pluralize has the plural of 'mine' as 'ours'
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if text == "mine":
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return "mines"
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return pattern.en.pluralize(text)
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