-from subprocess import Popen, PIPE
-from collections import deque
-from hashlib import sha1
-
-from mwxml import Dump
-
-from deltas.tokenizers import wikitext_split
-import mwpersistence
-import mwreverts
-from urllib.parse import quote
-TO_ENCODE = ('title', 'editor')
-PERSISTENCE_RADIUS=7
-from deltas import SequenceMatcher
-
-def calculate_persistence(tokens_added):
- return(sum([(len(x.revisions)-1) for x in tokens_added]),
- len(tokens_added))
-
-
-class WikiqIterator():
- def __init__(self, fh, collapse_user=False):
- self.fh = fh
- self.collapse_user = collapse_user
- self.mwiterator = Dump.from_file(self.fh)
- self.namespace_map = { ns.id : ns.name for ns in
- self.mwiterator.site_info.namespaces }
- self.__pages = self.load_pages()
-
- def load_pages(self):
- for page in self.mwiterator:
- yield WikiqPage(page,
- namespace_map = self.namespace_map,
- collapse_user=self.collapse_user)
-
- def __iter__(self):
- return self.__pages
-
- def __next__(self):
- return next(self._pages)
-
-class WikiqPage():
- __slots__ = ('id', 'title', 'namespace', 'redirect',
- 'restrictions', 'mwpage', '__revisions',
- 'collapse_user')
-
- def __init__(self, page, namespace_map, collapse_user=False):
- self.id = page.id
- self.namespace = page.namespace
- if page.namespace != 0:
- self.title = ':'.join([namespace_map[page.namespace], page.title])
- else:
- self.title = page.title
- self.restrictions = page.restrictions
- self.collapse_user = collapse_user
- self.mwpage = page
- self.__revisions = self.rev_list()
-
- def rev_list(self):
- # Outline for how we want to handle collapse_user=True
- # iteration rev.user prev_rev.user add prev_rev?
- # 0 A None Never
- # 1 A A False
- # 2 B A True
- # 3 A B True
- # 4 A A False
- # Post-loop A Always
- for i, rev in enumerate(self.mwpage):
- # never yield the first time
- if i == 0:
- if self.collapse_user:
- collapsed_revs = 1
- rev.collapsed_revs = collapsed_revs
-
- else:
- if self.collapse_user:
- # yield if this is the last edit in a seq by a user and reset
- # also yield if we do know who the user is
-
- if rev.deleted.user or prev_rev.deleted.user:
- yield prev_rev
- collapsed_revs = 1
- rev.collapsed_revs = collapsed_revs
-
- elif not rev.user.text == prev_rev.user.text:
- yield prev_rev
- collapsed_revs = 1
- rev.collapsed_revs = collapsed_revs
- # otherwise, add one to the counter
- else:
- collapsed_revs += 1
- rev.collapsed_revs = collapsed_revs
- # if collapse_user is false, we always yield
- else:
- yield prev_rev
-
- prev_rev = rev
-
- # also yield the final time
- yield prev_rev
-
- def __iter__(self):
- return self.__revisions
-
- def __next__(self):
- return next(self.__revisions)
-
-class WikiqParser():
-
- def __init__(self, input_file, output_file, collapse_user=False, persist=False, urlencode=False, persist_legacy=False):
-
- self.input_file = input_file
- self.output_file = output_file
- self.collapse_user = collapse_user
- self.persist = persist
- self.persist_legacy = persist_legacy
- self.printed_header = False
- self.namespaces = []
- self.urlencode = urlencode
-
- def __get_namespace_from_title(self, title):
- default_ns = None
-
- for ns in self.namespaces:
- # skip if the namespace is not defined
- if ns == None:
- default_ns = self.namespaces[ns]
- continue
-
- if title.startswith(ns + ":"):
- return self.namespaces[ns]
-
- # if we've made it this far with no matches, we return the default namespace
- return default_ns
-
- def process(self):
-
- # create a regex that creates the output filename
- # output_filename = re.sub(r'^.*/(enwiki\-\d+)\-.*p(\d+)p.*$',
- # r'output/wikiq-\1-\2.tsv',
- # input_filename)
-
- # Construct dump file iterator
- dump = WikiqIterator(self.input_file, collapse_user=self.collapse_user)
-
- # extract list of namspaces
- self.namespaces = {ns.name : ns.id for ns in dump.mwiterator.site_info.namespaces}
-
- page_count = 0
- rev_count = 0
-
-
- # Iterate through pages
- for page in dump:
- rev_detector = mwreverts.Detector()
-
- if self.persist or self.persist_legacy:
- window = deque(maxlen=PERSISTENCE_RADIUS)
-
- if not self.persist_legacy:
- state = mwpersistence.DiffState(SequenceMatcher(tokenizer = wikitext_split),
- revert_radius=PERSISTENCE_RADIUS)
-
- else:
- from mw.lib import persistence
- state = persistence.State()
-
- # Iterate through a page's revisions
- for rev in page:
-
- rev_data = {'revid' : rev.id,
- 'date_time' : rev.timestamp.strftime('%Y-%m-%d %H:%M:%S'),
- 'articleid' : page.id,
- 'editor_id' : "" if rev.deleted.user == True or rev.user.id is None else rev.user.id,
- 'title' : '"' + page.title + '"',
- 'namespace' : page.namespace if page.namespace is not None else self.__get_namespace_from_title(page.title),
- 'deleted' : "TRUE" if rev.deleted.text else "FALSE" }
-
- # if revisions are deleted, /many/ things will be missing
- if rev.deleted.text:
- rev_data['text_chars'] = ""
- rev_data['sha1'] = ""
- rev_data['revert'] = ""
- rev_data['reverteds'] = ""
-
- else:
- # rev.text can be None if the page has no text
- if not rev.text:
- rev.text = ""
- # if text exists, we'll check for a sha1 and generate one otherwise
-
- if rev.sha1:
- text_sha1 = rev.sha1
- else:
-
- text_sha1 = sha1(bytes(rev.text, "utf8")).hexdigest()
-
- rev_data['sha1'] = text_sha1
-
- # TODO rev.bytes doesn't work.. looks like a bug
- rev_data['text_chars'] = len(rev.text)
-
- # generate revert data
- revert = rev_detector.process(text_sha1, rev.id)
-
- if revert:
- rev_data['revert'] = "TRUE"
- rev_data['reverteds'] = '"' + ",".join([str(x) for x in revert.reverteds]) + '"'
- else:
- rev_data['revert'] = "FALSE"
- rev_data['reverteds'] = ""
-
- # if the fact that the edit was minor can be hidden, this might be an issue
- rev_data['minor'] = "TRUE" if rev.minor else "FALSE"
-
- if not rev.deleted.user:
- # wrap user-defined editors in quotes for fread
- rev_data['editor'] = '"' + rev.user.text + '"'
- rev_data['anon'] = "TRUE" if rev.user.id == None else "FALSE"
-
- else:
- rev_data['anon'] = ""
- rev_data['editor'] = ""
-
- #if re.match(r'^#redirect \[\[.*\]\]', rev.text, re.I):
- # redirect = True
- #else:
- # redirect = False
-
- #TODO missing: additions_size deletions_size
-
- # if collapse user was on, lets run that
- if self.collapse_user:
- rev_data['collapsed_revs'] = rev.collapsed_revs
-
- if self.persist or self.persist_legacy:
- if rev.deleted.text:
-
- for k in ["token_revs", "tokens_added", "tokens_removed", "tokens_window"]:
- old_rev_data[k] = None
- else:
-
- if not self.persist_legacy:
- _, tokens_added, tokens_removed = state.update(rev.text, rev.id)
-
- else:
- _, tokens_added, tokens_removed = state.process(rev.text, rev.id, text_sha1)
-
- window.append((rev.id, rev_data, tokens_added, tokens_removed))
-
- if len(window) == PERSISTENCE_RADIUS:
- old_rev_id, old_rev_data, old_tokens_added, old_tokens_removed = window[0]
-
- num_token_revs, num_tokens = calculate_persistence(old_tokens_added)
-
- old_rev_data["token_revs"] = num_token_revs
- old_rev_data["tokens_added"] = num_tokens
- old_rev_data["tokens_removed"] = len(old_tokens_removed)
- old_rev_data["tokens_window"] = PERSISTENCE_RADIUS-1
-
- self.print_rev_data(old_rev_data)
-
- else:
- self.print_rev_data(rev_data)
-
- rev_count += 1
-
- if self.persist or self.persist_legacy:
- # print out metadata for the last RADIUS revisions
- for i, item in enumerate(window):
- # if the window was full, we've already printed item 0
- if len(window) == PERSISTENCE_RADIUS and i == 0:
- continue
-
- rev_id, rev_data, tokens_added, tokens_removed = item
- num_token_revs, num_tokens = calculate_persistence(tokens_added)
-
- rev_data["token_revs"] = num_token_revs
- rev_data["tokens_added"] = num_tokens
- rev_data["tokens_removed"] = len(tokens_removed)
- rev_data["tokens_window"] = len(window)-(i+1)
-
- self.print_rev_data(rev_data)
-
- page_count += 1
-
- print("Done: %s revisions and %s pages." % (rev_count, page_count),
- file=sys.stderr)
-
- def print_rev_data(self, rev_data):
- # if it's the first time through, print the header
- if self.urlencode:
- for field in TO_ENCODE:
- rev_data[field] = quote(str(rev_data[field]))
-
- if not self.printed_header:
- print("\t".join([str(k) for k in sorted(rev_data.keys())]), file=self.output_file)
- self.printed_header = True
-
- print("\t".join([str(v) for k, v in sorted(rev_data.items())]), file=self.output_file)
-
-
-def open_input_file(input_filename):
- if re.match(r'.*\.7z$', input_filename):
- cmd = ["7za", "x", "-so", input_filename, '*']
- elif re.match(r'.*\.gz$', input_filename):
- cmd = ["zcat", input_filename]
- elif re.match(r'.*\.bz2$', input_filename):
- cmd = ["bzcat", "-dk", input_filename]
-
- try:
- input_file = Popen(cmd, stdout=PIPE).stdout
- except NameError:
- input_file = open(input_filename, 'r')
-
- return input_file
-
-def open_output_file(input_filename):
- # create a regex that creates the output filename
- output_filename = re.sub(r'\.(7z|gz|bz2)?$', '', input_filename)
- output_filename = re.sub(r'\.xml', '', output_filename)
- output_filename = output_filename + ".tsv"
- output_file = open(output_filename, "w")
-
- return output_file
projects / mediawiki_dump_tools.git / blobdiff