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__pycache__
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*.pyc
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*.swp
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CC0 1.0 Universal
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Statement of Purpose
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The laws of most jurisdictions throughout the world automatically confer
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exclusive Copyright and Related Rights (defined below) upon the creator and
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subsequent owner(s) (each and all, an "owner") of an original work of
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authorship and/or a database (each, a "Work").
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Certain owners wish to permanently relinquish those rights to a Work for the
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purpose of contributing to a commons of creative, cultural and scientific
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works ("Commons") that the public can reliably and without fear of later
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claims of infringement build upon, modify, incorporate in other works, reuse
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and redistribute as freely as possible in any form whatsoever and for any
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purposes, including without limitation commercial purposes. These owners may
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contribute to the Commons to promote the ideal of a free culture and the
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further production of creative, cultural and scientific works, or to gain
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reputation or greater distribution for their Work in part through the use and
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efforts of others.
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For these and/or other purposes and motivations, and without any expectation
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of additional consideration or compensation, the person associating CC0 with a
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Work (the "Affirmer"), to the extent that he or she is an owner of Copyright
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and Related Rights in the Work, voluntarily elects to apply CC0 to the Work
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and publicly distribute the Work under its terms, with knowledge of his or her
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Copyright and Related Rights in the Work and the meaning and intended legal
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effect of CC0 on those rights.
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1. Copyright and Related Rights. A Work made available under CC0 may be
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protected by copyright and related or neighboring rights ("Copyright and
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Related Rights"). Copyright and Related Rights include, but are not limited
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to, the following:
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i. the right to reproduce, adapt, distribute, perform, display, communicate,
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and translate a Work;
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ii. moral rights retained by the original author(s) and/or performer(s);
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iii. publicity and privacy rights pertaining to a person's image or likeness
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iv. rights protecting against unfair competition in regards to a Work,
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subject to the limitations in paragraph 4(a), below;
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v. rights protecting the extraction, dissemination, use and reuse of data in
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a Work;
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vi. database rights (such as those arising under Directive 96/9/EC of the
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European Parliament and of the Council of 11 March 1996 on the legal
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protection of databases, and under any national implementation thereof,
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including any amended or successor version of such directive); and
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vii. other similar, equivalent or corresponding rights throughout the world
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based on applicable law or treaty, and any national implementations thereof.
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2. Waiver. To the greatest extent permitted by, but not in contravention of,
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unconditionally waives, abandons, and surrenders all of Affirmer's Copyright
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License for any reason be judged legally invalid or ineffective under
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applicable law, such partial invalidity or ineffectiveness shall not
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a. No trademark or patent rights held by Affirmer are waived, abandoned,
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discoverable, all to the greatest extent permissible under applicable law.
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c. Affirmer disclaims responsibility for clearing rights of other persons
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disclaims responsibility for obtaining any necessary consents, permissions
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d. Affirmer understands and acknowledges that Creative Commons is not a
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party to this document and has no duty or obligation with respect to this
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CC0 or use of the Work.
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For more information, please see
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<http://creativecommons.org/publicdomain/zero/1.0/>
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@ -0,0 +1,24 @@
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import markup
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import wikipedia_api
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def main():
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links = []
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while True:
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try:
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go = input('go> ')
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except (EOFError, KeyboardInterrupt):
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break
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if go[:1] == '!':
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page = go[1:]
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else:
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# Links are 1-indexed
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page = links[markup.debase26(go) - 1]
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wikitext = wikipedia_api.wikitext(page)
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rendered, references, links = markup.render(wikitext)
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print(rendered)
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if __name__ == '__main__':
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main()
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@ -0,0 +1,220 @@
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import html.entities
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import re
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def base26(num):
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digits = []
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while num > 0:
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# ceil(num / 26) - 1
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next_num = (num + 25) // 26 - 1
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digits.append(num - 26 * next_num)
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num = next_num
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return ''.join(chr(ord('a') + i - 1) for i in reversed(digits))
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def debase26(digits):
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num = 0
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for digit in digits:
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num = 26 * num + ord(digit) - ord('a') + 1
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return num
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def render(text, inline = False, references = None, links = None):
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index = 0
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start_of_line = True
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def eof():
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nonlocal index
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return index >= len(text)
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def char():
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nonlocal index, start_of_line
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c = text[index]
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if c == '\n':
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start_of_line = True
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else:
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start_of_line = False
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index += 1
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return c
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def starts(prefix):
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nonlocal index
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return text[index:index + len(prefix)] == prefix
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def consume(prefix):
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nonlocal index, start_of_line
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assert text[index:index + len(prefix)] == prefix
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index += len(prefix)
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start_of_line = prefix[-1] == '\n'
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def read_until(delimiter):
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nonlocal index
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start = index
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while not eof() and not starts(delimiter): char()
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return text[start:index]
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def space():
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nonlocal index
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return text[index].isspace()
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def save():
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nonlocal index, start_of_line
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return (index, start_of_line)
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def load(state):
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nonlocal index, start_of_line
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index, start_of_line = state
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rendered = ''
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if references is None:
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references = []
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references = references[:]
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if links is None:
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links = []
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links = links[:]
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extlinks = []
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while not eof():
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if start_of_line and starts('=') and not inline:
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# ^\=+heading\=+\W*$
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start = save()
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line = read_until('\n')
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if not eof(): consume('\n')
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match = re.fullmatch('(\=+.*\=+)\W*', line)
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if match is None:
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# Was not a heading after all
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load(start)
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rendered += char()
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continue
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heading, = match.groups()
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# Figure out which equal signs mark heading level and which are part of heading itself
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equals_start = 0
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while all(i == '=' for i in heading[:equals_start + 1]):
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equals_start += 1
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equals_end = 0
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while all(i == '=' for i in heading[-(equals_end + 1):]):
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equals_end += 1
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heading_level = min(equals_start, equals_end)
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# Extract the heading
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heading, references, links = render(heading[heading_level:-heading_level], inline = True, links = links, references = references)
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# Add '#'s before the heading to mark it's a heading
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while rendered[-2:] != '\n\n':
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rendered += '\n'
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rendered += f"{'#' * (heading_level - 1)} {heading}\n"
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elif start_of_line and starts('*') and not inline:
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# List item
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list_level = 0
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while starts('*'):
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consume('*')
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list_level += 1
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list_item, references, links = render(read_until('\n'), inline = True, links = links, references = references)
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if not eof(): consume('\n')
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if rendered[-1:] != '\n':
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rendered += '\n'
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rendered += f"{' ' * (list_level - 1)}* {list_item}\n"
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elif starts('[['):
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# Wikilink
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consume('[[')
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link = ''
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while not eof() and not starts(']]') and not starts('|'):
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link += char()
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displaytext = link
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nesting = 1
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while nesting > 0:
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if starts('[['):
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consume('[[')
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nesting += 1
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elif starts(']]'):
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consume(']]')
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nesting -= 1
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elif nesting == 1 and starts('|'):
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consume('|')
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displaytext = ''
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else:
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displaytext += char()
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links.append(link)
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link_id = base26(len(links))
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displaytext, references, links = render(displaytext, inline = True, links = links, references = references)
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rendered += f"{displaytext}[{link_id}]"
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elif starts("'''"):
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# '''bold'''
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consume("'''")
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rendered += '*'
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elif starts("''"):
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# ''italic''
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consume("''")
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rendered += '*'
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elif starts('{{'):
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# {{Template|arg1{{!}}|arg2}}
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# TODO: Handle templates
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consume('{{')
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nesting = 1
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while not eof() and nesting > 0:
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if starts('{{'):
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nesting += 1
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consume('{{')
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elif starts('}}'):
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nesting -= 1
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consume('}}')
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else:
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char()
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elif starts('<ref'):
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# <ref name="foo">…</ref>
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# <ref name="foo"/>
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tag = read_until('>')
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if not eof(): consume('>')
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if tag[-1:] != '/':
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references.append(read_until('</ref>'))
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if not eof(): consume('</ref>')
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# TODO: Use correct reference numbers for reused references
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rendered += f'[{len(references)}]'
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elif starts('\n\n'):
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# New paragraph
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consume('\n\n')
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if rendered != '':
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rendered += '\n\n'
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elif starts('\n'):
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# Can be removed
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consume('\n')
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elif starts('&'):
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start = save()
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consume('&')
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if starts('#'):
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# Numeric charref
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num = read_until(';')
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if not eof(): consume(';')
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if num.startswith('x'):
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rendered += chr(int(num[1:], 16))
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else:
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rendered += chr(int(num))
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else:
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# Named entity
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for entity in html.entities.html5:
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if starts(entity):
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rendered += html.entities.html5[entity]
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consume(entity)
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break
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else:
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# Was not an entity
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load(start)
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rendered += char()
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else:
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rendered += char()
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return rendered, references, links
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@ -0,0 +1,34 @@
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import urllib.parse
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import urllib.request
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default_endpoint = 'https://en.wikipedia.org/w/index.php'
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default_timeout = 10
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def wikitext(title, endpoint = default_endpoint, timeout = default_timeout):
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protocol, host, path, query, fragment = urllib.parse.urlsplit(endpoint)
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query = urllib.parse.urlencode(urllib.parse.parse_qsl(query) + [
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('action', 'raw'),
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('title', title)
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])
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url = urllib.parse.urlunsplit((protocol, host, path, query, fragment))
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with urllib.request.urlopen(url, timeout=timeout) as r:
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contents = r.read()
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charset = r.headers.get_content_charset()
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if charset is not None:
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try:
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return contents.decode(charset)
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except LookupError:
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# Unknown encoding
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pass
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# Default to trying utf-8, windows-1252, iso-8859-1
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try:
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return contents.decode('utf-8')
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except UnicodeDecodeError:
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pass
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try:
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return contents.decode('windows-1252')
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except UnicodeDecodeError:
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pass
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return contents.decode('iso-8859-1')
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