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from contextlib import contextmanager
from dataclasses import dataclass
from datetime import datetime
import locale
from operator import attrgetter
from os import path
from pathlib import Path
import re
from typing import Iterator, Optional
def guess_language(filename):
parent = str(Path(filename).parent)
if parent == '.':
return 'fr'
return parent
def relative_path(*, to, ref):
# pathlib.Path(x).relative_to(y) cannot handle y not being under x,
# os.path.dirname('x') yields '' rather than '.'.
# 😮💨
return path.relpath(to, Path(ref).parent)
@contextmanager
def tmplocale(lang):
old_lang, encoding = locale.getlocale()
try:
locale.setlocale(locale.LC_TIME, (lang, encoding))
yield
finally:
locale.setlocale(locale.LC_TIME, (old_lang, encoding))
_LICENSE_URLS = {
'CC0': 'https://creativecommons.org/publicdomain/zero',
'CC BY': 'https://creativecommons.org/licenses/by',
'CC BY-SA': 'https://creativecommons.org/licenses/by-sa',
}
_LICENSE_RE = re.compile(
'('+'|'.join(_LICENSE_URLS.keys())+')' + ' ([0-9.]+)'
)
@dataclass
class LicenseInfo:
tag: str
version: str
@classmethod
def deserialize(cls, info):
if info is None:
return None
return cls(*_LICENSE_RE.fullmatch(info).groups())
def format(self):
url = f'{_LICENSE_URLS[self.tag]}/{self.version}/'
return f'<a href="{url}" target="_blank">{self.tag}</a>'
@dataclass
class Illustration:
file: str
alt_text: str
source_name: str
source_link: Optional[str]
license_info: Optional[LicenseInfo]
@classmethod
def deserialize(cls, d):
return cls(d['pic_file'],
d['pic_alt'],
d['pic_src'],
d['pic_link'],
LicenseInfo.deserialize(d['pic_license']))
@dataclass
class Concert:
time: datetime
place: str
address: str
pieces: Iterator[str]
instructions: str
illustration: Illustration
warning: Optional[str]
@classmethod
def deserialize(cls, d):
return cls(
time=datetime.strptime(d['time'], '%d/%m/%Y %Hh%M'),
place=d['place'],
address=d['address'],
pieces=d['pieces'],
instructions=d['instructions'],
illustration=Illustration.deserialize(d),
warning=d['warning']
)
def _optional(line):
return f'(?:{line})?'
_CONCERT_LINES = (
r'QUAND : (?P<time>[^\n]+)\n',
r'O[UÙ] : (?P<place>[^\n]+)\n',
'ADRESSE :\n',
'(?P<address>.+?)\n',
'PROGRAMME :\n',
'(?P<pieces>.+?)\n',
'INSTRUCTIONS :\n',
'(?P<instructions>.+?)\n',
'ILLUSTRATION :\n',
r'fichier : (?P<pic_file>[^\n]+)\n',
r'légende : (?P<pic_alt>[^\n]+)\n',
r'source : (?P<pic_src>[^\n]+)\n',
_optional(r'lien : (?P<pic_link>[^\n]+)\n'),
_optional(r'licence : (?P<pic_license>[^\n]+)\n'),
_optional(r'AVERTISSEMENT : (?P<warning>[^\n]+)\n'),
)
_CONCERT_RE = re.compile(''.join(_CONCERT_LINES), flags=re.DOTALL)
def read_concerts(filename):
with open(filename) as f:
concerts = (
Concert.deserialize(match)
for match in re.finditer(_CONCERT_RE, f.read())
)
return tuple(sorted(concerts, key=attrgetter('time')))
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