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# Copyright © 2016-2022 Jakub Wilk <jwilk@jwilk.net>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
'''
English parser
'''
import re
class Location():
'''
location in a file
'''
def __init__(self, file, lineno):
self.file = file
self.lineno = lineno
def __str__(self):
return f'{self.file.name}:{self.lineno}'
find_articles = re.compile(
r'''(?<!\w['’])(?:\b(an?)\s+(?:['‘"“]\s*)?(\d+|[^\W\d_]+)|\b(an?)\s*$)''',
re.IGNORECASE
).finditer
def parse_file(file):
'''
parse the file:
return sequence of (<location>, <article>, <word>) tuples
'''
carry = ''
for i, line in enumerate(file, start=1):
cline = carry + line
carry = ''
for match in find_articles(cline):
art, word, eol_art = match.groups()
if art is not None:
assert word is not None
yield (Location(file, i), art, word)
else:
assert eol_art is not None
carry = eol_art + ' '
__all__ = ['parse_file']
# vim:ts=4 sts=4 sw=4 et
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