390499dd90
Since our execution environment requires this Signed-off-by: Will Beason <willbeason@gmail.com>
656 lines
26 KiB
Python
Executable File
656 lines
26 KiB
Python
Executable File
#!/usr/bin/env python3
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# original wikiq headers are: title articleid revid date_time anon
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# editor editor_id minor text_size text_entropy text_md5 reversion
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# additions_size deletions_size
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import argparse
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import sys
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import os.path
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import re
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from io import TextIOWrapper
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from itertools import groupby
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from subprocess import Popen, PIPE
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from collections import deque
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from hashlib import sha1
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from typing import Any, IO, TextIO, Generator, Union
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import mwxml
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from mwxml import Dump
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from deltas.tokenizers import wikitext_split
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import mwpersistence
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import mwreverts
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import tables
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from tables import RevisionTable
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TO_ENCODE = ('title', 'editor')
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PERSISTENCE_RADIUS = 7
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from deltas import SequenceMatcher, SegmentMatcher
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import pyarrow as pa
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import pyarrow.parquet as pq
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import pyarrow.csv as pc
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class PersistMethod:
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none = 0
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sequence = 1
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segment = 2
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legacy = 3
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def calculate_persistence(tokens_added):
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return (sum([(len(x.revisions) - 1) for x in tokens_added]),
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len(tokens_added))
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def fix_hex_digests(revs: list[mwxml.Revision]) -> list[mwxml.Revision]:
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i = 0
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for rev in revs:
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if rev.text is None:
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rev.text = ""
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if not rev.sha1 and not rev.deleted.text:
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rev.sha1 = sha1(bytes(rev.text, "utf8")).hexdigest()
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revs[i] = rev
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i+=1
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return revs
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class WikiqIterator:
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def __init__(self, fh, collapse_user=False):
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self.fh = fh
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self.collapse_user = collapse_user
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self.mwiterator = Dump.from_file(self.fh)
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self.namespace_map = {ns.id: ns.name for ns in
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self.mwiterator.site_info.namespaces}
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self.__pages: Generator[WikiqPage] = self.load_pages()
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def load_pages(self):
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for page in self.mwiterator:
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yield WikiqPage(page,
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namespace_map=self.namespace_map,
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collapse_user=self.collapse_user)
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def __iter__(self):
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return self.__pages
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def __next__(self):
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return next(self.__pages)
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class WikiqPage:
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__slots__ = ('id', 'redirect',
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'restrictions', 'mwpage', '__revisions',
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'collapse_user')
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def __init__(self, page, namespace_map, collapse_user=False):
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self.id = page.id
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# following mwxml, we assume namespace 0 in cases where
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# page.namespace is inconsistent with namespace_map
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if page.namespace not in namespace_map:
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page.namespace = 0
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if page.namespace != 0:
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page.title = ':'.join([namespace_map[page.namespace], page.title])
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self.restrictions = page.restrictions
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self.collapse_user = collapse_user
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self.mwpage = page
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self.__revisions: Generator[list[mwxml.Revision]] = self.rev_list()
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@staticmethod
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def user_text(rev) -> Union[str, None]:
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return None if rev.deleted.user else rev.user.text
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def rev_list(self):
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# Outline for how we want to handle collapse_user=True
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# iteration rev.user prev_rev.user add prev_rev?
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# 0 A None Never
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# 1 A A False
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# 2 B A True
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# 3 A B True
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# 4 A A False
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# Post-loop A Always
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if not self.collapse_user:
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for rev in self.mwpage:
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yield [rev]
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return
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for _, revs in groupby(self.mwpage, self.user_text):
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# All revisions are either from the same user, or this is a single
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# revision where the user is missing.
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yield list(revs)
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def __iter__(self):
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return self.__revisions
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def __next__(self):
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return next(self.__revisions)
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"""
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A RegexPair is defined by a regular expression (pattern) and a label.
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The pattern can include capture groups. If it does then each capture group will have a resulting column in the output.
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If the pattern does not include a capture group, then only one output column will result.
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"""
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class RegexPair(object):
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def __init__(self, pattern, label):
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self.pattern = re.compile(pattern)
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self.label = label
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self.has_groups = bool(self.pattern.groupindex)
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if self.has_groups:
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self.capture_groups = list(self.pattern.groupindex.keys())
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def get_pyarrow_fields(self):
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if self.has_groups:
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fields = [pa.field(self._make_key(cap_group), pa.string())
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for cap_group in self.capture_groups]
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else:
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fields = [pa.field(self.label, pa.string())]
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return fields
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def _make_key(self, cap_group):
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return "{}_{}".format(self.label, cap_group)
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def matchmake(self, content: str) -> dict:
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temp_dict = {}
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# if there are named capture groups in the regex
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if self.has_groups:
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# if there are matches of some sort in this revision content, fill the lists for each cap_group
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if self.pattern.search(content) is not None:
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m = self.pattern.finditer(content)
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matchobjects = list(m)
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for cap_group in self.capture_groups:
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key = self._make_key(cap_group)
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temp_list = []
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for match in matchobjects:
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# we only want to add the match for the capture group if the match is not None
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if match.group(cap_group) is not None:
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temp_list.append(match.group(cap_group))
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# if temp_list of matches is empty just make that column None
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if len(temp_list) == 0:
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temp_dict[key] = None
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# else we put in the list we made in the for-loop above
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else:
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temp_dict[key] = ', '.join(temp_list)
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# there are no matches at all in this revision content, we default values to None
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else:
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for cap_group in self.capture_groups:
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key = self._make_key(cap_group)
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temp_dict[key] = None
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# there are no capture groups, we just search for all the matches of the regex
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else:
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# given that there are matches to be made
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if type(content) in (str, bytes):
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if self.pattern.search(content) is not None:
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m = self.pattern.findall(content)
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temp_dict[self.label] = ', '.join(m)
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else:
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temp_dict[self.label] = None
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return temp_dict
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class WikiqParser:
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def __init__(self,
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input_file: Union[TextIOWrapper, IO[Any], IO[bytes]],
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output_file: Union[TextIO, str],
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regex_match_revision: list[str],
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regex_match_comment: list[str],
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regex_revision_label: list[str],
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regex_comment_label: list[str],
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collapse_user: bool = False,
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persist: int = None,
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namespaces: Union[list[int], None] = None,
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revert_radius: int = 15,
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output_parquet: bool = True,
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parquet_buffer_size: int = 2000):
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"""
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Parameters:
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persist : what persistence method to use. Takes a PersistMethod value
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"""
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self.input_file = input_file
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self.collapse_user: bool = collapse_user
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self.persist: int = persist
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self.namespaces = []
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self.revert_radius = revert_radius
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if namespaces is not None:
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self.namespace_filter = set(namespaces)
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else:
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self.namespace_filter = None
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self.regex_schemas = []
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self.regex_revision_pairs: list[RegexPair] = self.make_matchmake_pairs(regex_match_revision,
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regex_revision_label)
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self.regex_comment_pairs: list[RegexPair] = self.make_matchmake_pairs(regex_match_comment, regex_comment_label)
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# here we initialize the variables we need for output.
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if output_parquet is True:
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self.output_parquet = True
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self.pq_writer = None
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self.output_file = output_file
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self.parquet_buffer = []
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self.parquet_buffer_size = parquet_buffer_size
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else:
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self.print_header = True
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if output_file == sys.stdout.buffer:
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self.output_file = output_file
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else:
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self.output_file = open(output_file, 'wb')
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self.output_parquet = False
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def make_matchmake_pairs(self, patterns, labels) -> list[RegexPair]:
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if (patterns is not None and labels is not None) and \
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(len(patterns) == len(labels)):
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result: list[RegexPair] = []
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for pattern, label in zip(patterns, labels):
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rp = RegexPair(pattern, label)
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result.append(rp)
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self.regex_schemas = self.regex_schemas + rp.get_pyarrow_fields()
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return result
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elif (patterns is None) and (labels is None):
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return []
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else:
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sys.exit('Each regular expression *must* come with a corresponding label and vice versa.')
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def matchmake_revision(self, rev: mwxml.Revision):
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result = self.matchmake_text(rev.text)
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for k, v in self.matchmake_comment(rev.comment).items():
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result[k] = v
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return result
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def matchmake_text(self, text: str):
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return self.matchmake_pairs(text, self.regex_revision_pairs)
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def matchmake_comment(self, comment: str):
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return self.matchmake_pairs(comment, self.regex_comment_pairs)
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@staticmethod
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def matchmake_pairs(text, pairs):
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result = {}
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for pair in pairs:
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for k, v in pair.matchmake(text).items():
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result[k] = v
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return result
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def __get_namespace_from_title(self, title):
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default_ns = None
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for ns in self.namespaces:
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# skip if the namespace is not defined
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if ns is None:
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default_ns = self.namespaces[ns]
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continue
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if title.startswith(ns + ":"):
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return self.namespaces[ns]
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# if we've made it this far with no matches, we return the default namespace
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return default_ns
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def process(self):
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# create a regex that creates the output filename
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# output_filename = re.sub(r'^.*/(enwiki\-\d+)\-.*p(\d+)p.*$',
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# r'output/wikiq-\1-\2.tsv',
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# input_filename)
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# Construct dump file iterator
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dump = WikiqIterator(self.input_file, collapse_user=self.collapse_user)
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reverts_column = tables.RevisionReverts()
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table = RevisionTable([
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tables.RevisionId(),
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tables.RevisionTimestamp(),
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tables.RevisionArticleId(),
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tables.RevisionEditorId(),
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tables.RevisionPageTitle(),
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tables.RevisionNamespace(),
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tables.RevisionDeleted(),
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tables.RevisionTextChars(),
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reverts_column,
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tables.RevisionSha1(),
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tables.RevisionIsMinor(),
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tables.RevisionEditorText(),
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tables.RevisionIsAnon(),
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])
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if self.collapse_user:
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table.columns.append(tables.RevisionCollapsed())
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# extract list of namespaces
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self.namespaces = {ns.name: ns.id for ns in dump.mwiterator.site_info.namespaces}
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page_count = 0
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rev_count = 0
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writer: pq.ParquetWriter | pc.CSVWriter
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schema = table.schema()
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schema = schema.append(pa.field('revert', pa.bool_(), nullable=True))
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# Add regex fields to the schema.
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for pair in self.regex_revision_pairs:
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for field in pair.get_pyarrow_fields():
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schema = schema.append(field)
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for pair in self.regex_comment_pairs:
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for field in pair.get_pyarrow_fields():
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schema = schema.append(field)
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if self.persist != PersistMethod.none:
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table.columns.append(tables.RevisionText())
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schema = schema.append(pa.field('token_revs', pa.int64(), nullable=True))
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schema = schema.append(pa.field('tokens_added', pa.int64(), nullable=True))
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schema = schema.append(pa.field('tokens_removed', pa.int64(), nullable=True))
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schema = schema.append(pa.field('tokens_window', pa.int64(), nullable=True))
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if self.output_parquet:
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writer = pq.ParquetWriter(self.output_file, schema, flavor='spark')
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else:
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writer = pc.CSVWriter(self.output_file, schema, write_options=pc.WriteOptions(delimiter='\t'))
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regex_matches = {}
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# Iterate through pages
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for page in dump:
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# skip namespaces not in the filter
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if self.namespace_filter is not None:
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if page.mwpage.namespace not in self.namespace_filter:
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continue
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# Disable detecting reverts if radius is 0.
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if self.revert_radius > 0:
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reverts_column.rev_detector = mwreverts.Detector(radius=self.revert_radius)
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else:
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reverts_column.rev_detector = None
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# Iterate through a page's revisions
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for revs in page:
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# Revisions may or may not be grouped into lists of contiguous revisions by the
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# same user. We call these "edit sessions". Otherwise revs is a list containing
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# exactly one revision.
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revs = list(revs)
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revs = fix_hex_digests(revs)
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table.add(page.mwpage, revs)
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# if re.match(r'^#redirect \[\[.*\]\]', rev.text, re.I):
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# redirect = True
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# else:
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# redirect = False
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# TODO missing: additions_size deletions_size
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rev_count += 1
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# Get the last revision in the edit session.
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rev = revs[-1]
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regex_dict = self.matchmake_revision(rev)
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for k, v in regex_dict.items():
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if regex_matches.get(k) is None:
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regex_matches[k] = []
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regex_matches[k].append(v)
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# Collect the set of pages currently buffered in the table so we can run multi-page functions on them.
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row_buffer = table.pop()
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is_revert_column: list[Union[bool, None]] = []
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for r, d in zip(row_buffer['reverteds'], row_buffer['deleted']):
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if self.revert_radius == 0 or d:
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is_revert_column.append(None)
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else:
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is_revert_column.append(r is not None)
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row_buffer['revert'] = is_revert_column
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for k, v in regex_matches.items():
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row_buffer[k] = v
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regex_matches = {}
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if self.persist != PersistMethod.none:
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window = deque(maxlen=PERSISTENCE_RADIUS)
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row_buffer['token_revs'] = []
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row_buffer['tokens_added'] = []
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row_buffer['tokens_removed'] = []
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row_buffer['tokens_window'] = []
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if self.persist == PersistMethod.sequence:
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state = mwpersistence.DiffState(SequenceMatcher(tokenizer=wikitext_split),
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revert_radius=PERSISTENCE_RADIUS)
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elif self.persist == PersistMethod.segment:
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state = mwpersistence.DiffState(SegmentMatcher(tokenizer=wikitext_split),
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revert_radius=PERSISTENCE_RADIUS)
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else:
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from mw.lib import persistence
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state = persistence.State()
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for idx, text in enumerate(row_buffer['text']):
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rev_id = row_buffer['revid'][idx]
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if self.persist != PersistMethod.legacy:
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_, tokens_added, tokens_removed = state.update(text, rev_id)
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else:
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_, tokens_added, tokens_removed = state.process(text, rev_id)
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window.append((rev_id, tokens_added, tokens_removed))
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if len(window) == PERSISTENCE_RADIUS:
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old_rev_id, old_tokens_added, old_tokens_removed = window.popleft()
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num_token_revs, num_tokens = calculate_persistence(old_tokens_added)
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row_buffer['token_revs'].append(num_token_revs)
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row_buffer['tokens_added'].append(num_tokens)
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row_buffer['tokens_removed'].append(len(old_tokens_removed))
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row_buffer['tokens_window'].append(PERSISTENCE_RADIUS - 1)
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del row_buffer['text']
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# print out metadata for the last RADIUS revisions
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for i, item in enumerate(window):
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# if the window was full, we've already printed item 0
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if len(window) == PERSISTENCE_RADIUS and i == 0:
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continue
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rev_id, tokens_added, tokens_removed = item
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num_token_revs, num_tokens = calculate_persistence(tokens_added)
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row_buffer['token_revs'].append(num_token_revs)
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row_buffer['tokens_added'].append(num_tokens)
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row_buffer['tokens_removed'].append(len(tokens_removed))
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row_buffer['tokens_window'].append(len(window) - (i + 1))
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writer.write(pa.table(row_buffer, schema=schema))
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page_count += 1
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print("Done: %s revisions and %s pages." % (rev_count, page_count),
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file=sys.stderr)
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writer.close()
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def match_archive_suffix(input_filename):
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if re.match(r'.*\.7z$', input_filename):
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cmd = ["7za", "x", "-so", input_filename]
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elif re.match(r'.*\.gz$', input_filename):
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cmd = ["zcat", input_filename]
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elif re.match(r'.*\.bz2$', input_filename):
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cmd = ["bzcat", "-dk", input_filename]
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else:
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raise ValueError("Unrecognized file type: %s" % input_filename)
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return cmd
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def open_input_file(input_filename, fandom_2020=False):
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cmd = match_archive_suffix(input_filename)
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if fandom_2020:
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cmd.append("*.xml")
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try:
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return Popen(cmd, stdout=PIPE).stdout
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except NameError:
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return open(input_filename, 'r')
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def get_output_filename(input_filename, parquet=False) -> str:
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output_filename = re.sub(r'\.(7z|gz|bz2)?$', '', input_filename)
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output_filename = re.sub(r'\.xml', '', output_filename)
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if parquet is False:
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output_filename = output_filename + ".tsv"
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else:
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output_filename = output_filename + ".parquet"
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return output_filename
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def open_output_file(input_filename):
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# create a regex that creates the output filename
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output_filename = get_output_filename(input_filename, parquet=False)
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output_file = open(output_filename, "w")
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return output_file
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|
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|
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def main():
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parser = argparse.ArgumentParser(description='Parse MediaWiki XML database dumps into tab delimited data.')
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|
|
# arguments for the input direction
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|
parser.add_argument('dumpfiles', metavar="DUMPFILE", nargs="*", type=str,
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|
help="Filename of the compressed or uncompressed XML database dump. If absent, we'll look for content on stdin and output on stdout.")
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|
|
|
parser.add_argument('-o', '--output', metavar='OUTPUT', dest='output', type=str, nargs=1,
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|
help="Directory for output files. If it ends with .parquet output will be in parquet format.")
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|
|
|
parser.add_argument('-s', '--stdout', dest="stdout", action="store_true",
|
|
help="Write output to standard out (do not create dump file)")
|
|
|
|
parser.add_argument('--collapse-user', dest="collapse_user", action="store_true",
|
|
help="Operate only on the final revision made by user a user within all sequences of consecutive edits made by a user. This can be useful for addressing issues with text persistence measures.")
|
|
|
|
parser.add_argument('-p', '--persistence', dest="persist", default=None, const='', type=str,
|
|
choices=['', 'segment', 'sequence', 'legacy'], nargs='?',
|
|
help="Compute and report measures of content persistent: (1) persistent token revisions, (2) tokens added, and (3) number of revision used in computing the first measure. This may by slow. The default is -p=sequence, which uses the same algorithm as in the past, but with improvements to wikitext parsing. Use -p=legacy for old behavior used in older research projects. Use -p=segment for advanced persistence calculation method that is robust to content moves, but prone to bugs, and slower.")
|
|
|
|
parser.add_argument('-n', '--namespace-include', dest="namespace_filter", type=int, action='append',
|
|
help="Id number of namespace to include. Can be specified more than once.")
|
|
|
|
parser.add_argument('-rr',
|
|
'--revert-radius',
|
|
dest="revert_radius",
|
|
type=int,
|
|
action='store',
|
|
default=15,
|
|
help="Number of edits to check when looking for reverts (default: 15)")
|
|
|
|
parser.add_argument('-RP', '--revision-pattern', dest="regex_match_revision", default=None, type=str,
|
|
action='append',
|
|
help="The regular expression to search for in revision text. The regex must be surrounded by quotes.")
|
|
|
|
parser.add_argument('-RPl', '--revision-pattern-label', dest="regex_revision_label", default=None, type=str,
|
|
action='append',
|
|
help="The label for the outputted column based on matching the regex in revision text.")
|
|
|
|
parser.add_argument('-CP', '--comment-pattern', dest="regex_match_comment", default=None, type=str, action='append',
|
|
help="The regular expression to search for in comments of revisions.")
|
|
|
|
parser.add_argument('-CPl', '--comment-pattern-label', dest="regex_comment_label", default=None, type=str,
|
|
action='append',
|
|
help="The label for the outputted column based on matching the regex in comments.")
|
|
|
|
parser.add_argument('--fandom-2020', dest="fandom_2020",
|
|
action='store_true',
|
|
help="Whether the archive is from the fandom 2020 dumps by Wikiteam. These dumps can have multiple .xml files in their archives.")
|
|
|
|
args = parser.parse_args()
|
|
|
|
# set persistence method
|
|
|
|
if args.persist is None:
|
|
persist = PersistMethod.none
|
|
elif args.persist == "segment":
|
|
persist = PersistMethod.segment
|
|
elif args.persist == "legacy":
|
|
persist = PersistMethod.legacy
|
|
else:
|
|
persist = PersistMethod.sequence
|
|
|
|
if args.namespace_filter is not None:
|
|
namespaces = args.namespace_filter
|
|
else:
|
|
namespaces = None
|
|
|
|
if len(args.dumpfiles) > 0:
|
|
for filename in args.dumpfiles:
|
|
input_file = open_input_file(filename, args.fandom_2020)
|
|
|
|
# open directory for output
|
|
if args.output:
|
|
output = args.output[0]
|
|
else:
|
|
output = "."
|
|
|
|
output_parquet = output.endswith(".parquet")
|
|
|
|
print("Processing file: %s" % filename, file=sys.stderr)
|
|
|
|
if args.stdout:
|
|
# Parquet libraries need a binary output, so just sys.stdout doesn't work.
|
|
output_file = sys.stdout.buffer
|
|
elif os.path.isdir(output) or output_parquet:
|
|
filename = os.path.join(output, os.path.basename(filename))
|
|
output_file = get_output_filename(filename, parquet=output_parquet)
|
|
else:
|
|
output_file = output
|
|
|
|
wikiq = WikiqParser(input_file,
|
|
output_file,
|
|
collapse_user=args.collapse_user,
|
|
persist=persist,
|
|
namespaces=namespaces,
|
|
revert_radius=args.revert_radius,
|
|
regex_match_revision=args.regex_match_revision,
|
|
regex_revision_label=args.regex_revision_label,
|
|
regex_match_comment=args.regex_match_comment,
|
|
regex_comment_label=args.regex_comment_label,
|
|
output_parquet=output_parquet)
|
|
|
|
wikiq.process()
|
|
|
|
# close things
|
|
input_file.close()
|
|
|
|
else:
|
|
wikiq = WikiqParser(sys.stdin,
|
|
sys.stdout,
|
|
collapse_user=args.collapse_user,
|
|
persist=persist,
|
|
# persist_legacy=args.persist_legacy,
|
|
namespaces=namespaces,
|
|
revert_radius=args.revert_radius,
|
|
regex_match_revision=args.regex_match_revision,
|
|
regex_revision_label=args.regex_revision_label,
|
|
regex_match_comment=args.regex_match_comment,
|
|
regex_comment_label=args.regex_comment_label)
|
|
|
|
wikiq.process()
|
|
|
|
# stop_words = "a,able,about,across,after,all,almost,also,am,among,an,and,any,are,as,at,be,because,been,but,by,can,cannot,could,dear,did,do,does,either,else,ever,every,for,from,get,got,had,has,have,he,her,hers,him,his,how,however,i,if,in,into,is,it,its,just,least,let,like,likely,may,me,might,most,must,my,neither,no,nor,not,of,off,often,on,only,or,other,our,own,rather,said,say,says,she,should,since,so,some,than,that,the,their,them,then,there,these,they,this,tis,to,too,twas,us,wants,was,we,were,what,when,where,which,while,who,whom,why,will,with,would,yet,you,your"
|
|
# stop_words = stop_words.split(",")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|