354 lines
15 KiB
Python
354 lines
15 KiB
Python
import sys
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import re
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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 deltas.tokenizers import wikitext_split
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from mwxml import Dump
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import mwpersistence
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import mwreverts
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from urllib.parse import quote
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from urllib.parse import unquote
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from deltas import SequenceMatcher
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TO_ENCODE = ('title', 'editor')
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PERSISTENCE_RADIUS = 7
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def try_unquote(obj):
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if type(obj) is str:
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obj = unquote(obj)
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return obj.strip('\"')
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else:
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return
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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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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 = 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', 'title', 'namespace', '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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self.namespace = page.namespace
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if page.namespace != 0:
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self.title = ':'.join([namespace_map[page.namespace], page.title])
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else:
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self.title = 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 = self.rev_list()
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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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for i, rev in enumerate(self.mwpage):
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# never yield the first time
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if i == 0:
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if self.collapse_user:
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collapsed_revs = 1
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rev.collapsed_revs = collapsed_revs
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else:
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if self.collapse_user:
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# yield if this is the last edit in a seq by a user and reset
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# also yield if we do know who the user is
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if rev.deleted.user or prev_rev.deleted.user:
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yield prev_rev
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collapsed_revs = 1
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rev.collapsed_revs = collapsed_revs
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elif not rev.user.text == prev_rev.user.text:
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yield prev_rev
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collapsed_revs = 1
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rev.collapsed_revs = collapsed_revs
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# otherwise, add one to the counter
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else:
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collapsed_revs += 1
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rev.collapsed_revs = collapsed_revs
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# if collapse_user is false, we always yield
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else:
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yield prev_rev
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prev_rev = rev
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# also yield the final time
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yield prev_rev
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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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class WikiqParser():
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def __init__(self, input_file, output_file, collapse_user=False, persist=False, urlencode=False, persist_legacy=False):
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self.input_file = input_file
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self.output_file = output_file
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self.collapse_user = collapse_user
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self.persist = persist
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self.persist_legacy = persist_legacy
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self.printed_header = False
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self.namespaces = []
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self.urlencode = urlencode
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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 == 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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# extract list of namspaces
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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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# Iterate through pages
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for page in dump:
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rev_detector = mwreverts.Detector()
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if self.persist or self.persist_legacy:
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window = deque(maxlen=PERSISTENCE_RADIUS)
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if not self.persist_legacy:
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state = mwpersistence.DiffState(SequenceMatcher(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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# Iterate through a page's revisions
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for rev in page:
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rev_data = {'revid' : rev.id,
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'date_time' : rev.timestamp.strftime('%Y-%m-%d %H:%M:%S'),
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'articleid' : page.id,
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'editor_id' : "" if rev.deleted.user == True or rev.user.id is None else rev.user.id,
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'title' : '"' + page.title + '"',
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'namespace' : page.namespace if page.namespace is not None else self.__get_namespace_from_title(page.title),
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'deleted' : "TRUE" if rev.deleted.text else "FALSE" }
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# if revisions are deleted, /many/ things will be missing
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if rev.deleted.text:
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rev_data['text_chars'] = ""
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rev_data['sha1'] = ""
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rev_data['revert'] = ""
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rev_data['reverteds'] = ""
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else:
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# rev.text can be None if the page has no text
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if not rev.text:
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rev.text = ""
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# if text exists, we'll check for a sha1 and generate one otherwise
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if rev.sha1:
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text_sha1 = rev.sha1
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else:
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text_sha1 = sha1(bytes(rev.text, "utf8")).hexdigest()
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rev_data['sha1'] = text_sha1
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# TODO rev.bytes doesn't work.. looks like a bug
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rev_data['text_chars'] = len(rev.text)
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# generate revert data
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revert = rev_detector.process(text_sha1, rev.id)
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if revert:
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rev_data['revert'] = "TRUE"
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rev_data['reverteds'] = '"' + ",".join([str(x) for x in revert.reverteds]) + '"'
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else:
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rev_data['revert'] = "FALSE"
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rev_data['reverteds'] = ""
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# if the fact that the edit was minor can be hidden, this might be an issue
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rev_data['minor'] = "TRUE" if rev.minor else "FALSE"
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if not rev.deleted.user:
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# wrap user-defined editors in quotes for fread
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rev_data['editor'] = '"' + rev.user.text + '"'
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rev_data['anon'] = "TRUE" if rev.user.id == None else "FALSE"
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else:
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rev_data['anon'] = ""
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rev_data['editor'] = ""
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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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# if collapse user was on, lets run that
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if self.collapse_user:
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rev_data['collapsed_revs'] = rev.collapsed_revs
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if self.persist or self.persist_legacy:
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if rev.deleted.text:
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for k in ["token_revs", "tokens_added", "tokens_removed", "tokens_window"]:
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old_rev_data[k] = None
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else:
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if not self.persist_legacy:
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_, tokens_added, tokens_removed = state.update(rev.text, rev.id)
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else:
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_, tokens_added, tokens_removed = state.process(rev.text, rev.id, text_sha1)
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window.append((rev.id, rev_data, tokens_added, tokens_removed))
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if len(window) == PERSISTENCE_RADIUS:
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old_rev_id, old_rev_data, old_tokens_added, old_tokens_removed = window[0]
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num_token_revs, num_tokens = calculate_persistence(old_tokens_added)
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old_rev_data["token_revs"] = num_token_revs
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old_rev_data["tokens_added"] = num_tokens
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old_rev_data["tokens_removed"] = len(old_tokens_removed)
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old_rev_data["tokens_window"] = PERSISTENCE_RADIUS-1
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self.print_rev_data(old_rev_data)
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else:
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self.print_rev_data(rev_data)
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rev_count += 1
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if self.persist or self.persist_legacy:
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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, rev_data, tokens_added, tokens_removed = item
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num_token_revs, num_tokens = calculate_persistence(tokens_added)
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rev_data["token_revs"] = num_token_revs
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rev_data["tokens_added"] = num_tokens
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rev_data["tokens_removed"] = len(tokens_removed)
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rev_data["tokens_window"] = len(window)-(i+1)
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self.print_rev_data(rev_data)
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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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def print_rev_data(self, rev_data):
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# if it's the first time through, print the header
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if self.urlencode:
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for field in TO_ENCODE:
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rev_data[field] = quote(str(rev_data[field]))
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if not self.printed_header:
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print("\t".join([str(k) for k in sorted(rev_data.keys())]), file=self.output_file)
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self.printed_header = True
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print("\t".join([str(v) for k, v in sorted(rev_data.items())]), file=self.output_file)
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def open_input_file(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$', input_filename):
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cmd = ["bzcat", "-dk", input_filename]
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try:
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input_file = Popen(cmd, stdout=PIPE).stdout
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except NameError:
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input_file = open(input_filename, 'r')
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return input_file
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def open_output_file(input_filename):
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# create a regex that creates the output filename
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output_filename = re.sub(r'\.(7z|gz|bz2)?$', '', input_filename)
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output_filename = re.sub(r'\.xml', '', output_filename)
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output_filename = output_filename + ".tsv"
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output_file = open(output_filename, "w")
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return output_file
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class IPCheck(object):
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# IP address regexes taken from https://gist.github.com/mnordhoff/2213179
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ipv4_address = re.compile('^(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$')
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ipv6_address_or_addrz = re.compile('^(?:(?:[0-9A-Fa-f]{1,4}:){6}(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|::(?:[0-9A-Fa-f]{1,4}:){5}(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|(?:[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){4}(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){3}(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|(?:(?:[0-9A-Fa-f]{1,4}:){,2}[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){2}(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|(?:(?:[0-9A-Fa-f]{1,4}:){,3}[0-9A-Fa-f]{1,4})?::[0-9A-Fa-f]{1,4}:(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|(?:(?:[0-9A-Fa-f]{1,4}:){,4}[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}|(?:(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))|(?:(?:[0-9A-Fa-f]{1,4}:){,5}[0-9A-Fa-f]{1,4})?::[0-9A-Fa-f]{1,4}|(?:(?:[0-9A-Fa-f]{1,4}:){,6}[0-9A-Fa-f]{1,4})?::)(?:%25(?:[A-Za-z0-9\\-._~]|%[0-9A-Fa-f]{2})+)?$')
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@staticmethod
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def is_ip(username):
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if not type(username) is str:
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return False
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'''Check if a username is an ip (v4 or v6) address. We use this as
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a marker of whether the user is anonymous.'''
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if IPCheck.ipv4_address.match(username) or IPCheck.ipv6_address_or_addrz.match(username):
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return True
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else:
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return False
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