from collections import deque
from hashlib import sha1
-from mw.xml_dump import Iterator
-from mw.lib import persistence
-from mw.lib import reverts
+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
+from deltas import SegmentMatcher
+
+class PersistMethod:
+ none = 0
+ sequence = 1
+ segment = 2
+ legacy = 3
def calculate_persistence(tokens_added):
return(sum([(len(x.revisions)-1) for x in tokens_added]),
len(tokens_added))
+def matchmaker(rev_data, regular_expression, scanner, rev): #rev_data,self.regex,self.scanner, rev
+ for location in scanner: #presumably 'comment' 'text' 'comment text' made into a list by args
+ if location == "comment":
+ matching_string = rev.comment
+ elif location == "text":
+ matching_string = rev.text
+ else:
+ sys.exit("regex scanner location must be 'comment' or 'text'.")
+
+ if (re.search(regular_expression, matching_string) is not None): # we know that there is a match somewhere
+ m = re.finditer(regular_expression, matching_string) # all our matchObjects in a list
+ blob=""
+ for result in m:
+ blob = blob + "," + result.group(0)
+ # columns we want
+ rev_data['matches'] = blob #### the list of matchObjects. gleaned in post-processing
+ else:
+ rev_data['matches'] = None
+
+ return rev_data
+
+
+
class WikiqIterator():
def __init__(self, fh, collapse_user=False):
self.fh = fh
self.collapse_user = collapse_user
- self.mwiterator = Iterator.from_file(self.fh)
+ 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, collapse_user=self.collapse_user)
+ yield WikiqPage(page,
+ namespace_map = self.namespace_map,
+ collapse_user=self.collapse_user)
def __iter__(self):
return self.__pages
'restrictions', 'mwpage', '__revisions',
'collapse_user')
- def __init__(self, page, collapse_user=False):
+ def __init__(self, page, namespace_map, collapse_user=False):
self.id = page.id
- self.title = page.title
self.namespace = page.namespace
- self.redirect = page.redirect
+ # following mwxml, we assume namespace 0 in cases where
+ # page.namespace is inconsistent with namespace_map
+ if page.namespace not in namespace_map:
+ self.title = page.title
+ page.namespace = 0
+ 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()
else:
if self.collapse_user:
# yield if this is the last edit in a seq by a user and reset
- if not rev.contributor.user_text == prev_rev.contributor.user_text:
+ # 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
yield prev_rev
prev_rev = rev
+
# also yield the final time
yield prev_rev
return next(self.__revisions)
class WikiqParser():
+
+ def __init__(self, input_file, output_file, scanner, match_regex, collapse_user=False, persist=None, urlencode=False, namespaces = None):
+ """
+ Parameters:
+ persist : what persistence method to use. Takes a PersistMethod value
+ """
-
- def __init__(self, input_file, output_file, collapse_user=False, persist=False, urlencode=False):
-
self.input_file = input_file
self.output_file = output_file
self.collapse_user = collapse_user
self.printed_header = False
self.namespaces = []
self.urlencode = urlencode
-
+ self.scanner = scanner
+ self.match_regex = match_regex
+
+ if namespaces is not None:
+ self.namespace_filter = set(namespaces)
+ else:
+ self.namespace_filter = None
+
def __get_namespace_from_title(self, title):
default_ns = None
# 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
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.namespaces}
+ 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:
- if self.persist:
- state = persistence.State()
+ namespace = page.namespace if page.namespace is not None else self.__get_namespace_from_title(page.title)
+
+ # skip namespaces not in the filter
+ if self.namespace_filter is not None:
+ if namespace not in self.namespace_filter:
+ continue
+
+ rev_detector = mwreverts.Detector()
+
+ if self.persist != PersistMethod.none:
window = deque(maxlen=PERSISTENCE_RADIUS)
- rev_detector = reverts.Detector()
+ if self.persist == PersistMethod.sequence:
+ state = mwpersistence.DiffState(SequenceMatcher(tokenizer = wikitext_split),
+ revert_radius=PERSISTENCE_RADIUS)
+
+ elif self.persist == PersistMethod.segment:
+ state = mwpersistence.DiffState(SegmentMatcher(tokenizer = wikitext_split),
+ revert_radius=PERSISTENCE_RADIUS)
+
+ # self.persist == PersistMethod.legacy
+ 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.contributor.id == None else rev.contributor.id,
- 'title' : '"' + page.title + '"',
- 'namespace' : page.namespace if page.namespace else self.__get_namespace_from_title(page.title),
- 'deleted' : "TRUE" if rev.text.deleted else "FALSE" }
+ ## m = re.finditer() #so we can find all instances
+ ## m.groupdict() #so we can look at them all with their names
+
+ # initialize rev_dat
+ rev_data = {}
+
+ if self.scanner is not None: # we know we want to do a regex search
+ ## comment = want to look in comment attached to revision
+ ## text = want to look in revision text
+
+ ### call the scanner function
+ rev_data = matchmaker(rev_data, self.match_regex, self.scanner, rev)
+
+ if self.scanner is not None and rev_data['matches'] is None:
+ next
+
+ # we fill out the rest of the data structure now
+ rev_data['revid'] = rev.id
+ rev_data['date_time'] = rev.timestamp.strftime('%Y-%m-%d %H:%M:%S')
+ rev_data['articleid'] = page.id
+ rev_data['editor_id'] = "" if rev.deleted.user == True or rev.user.id is None else rev.user.id
+ rev_data['title'] = '"' + page.title + '"'
+ rev_data['namespace'] = namespace
+ rev_data['deleted'] = "TRUE" if rev.deleted.text else "FALSE"
# if revisions are deleted, /many/ things will be missing
- if rev.text.deleted:
+ 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]) + '"'
# 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 rev.contributor.user_text:
+ if not rev.deleted.user:
# wrap user-defined editors in quotes for fread
- rev_data['editor'] = '"' + rev.contributor.user_text + '"'
- rev_data['anon'] = "TRUE" if rev.contributor.id == None else "FALSE"
+ rev_data['editor'] = '"' + rev.user.text + '"'
+ rev_data['anon'] = "TRUE" if rev.user.id == None else "FALSE"
else:
rev_data['anon'] = ""
if self.collapse_user:
rev_data['collapsed_revs'] = rev.collapsed_revs
- if self.persist:
- if rev.text.deleted:
+ if self.persist != PersistMethod.none:
+ if rev.deleted.text:
for k in ["token_revs", "tokens_added", "tokens_removed", "tokens_window"]:
old_rev_data[k] = None
else:
- _, tokens_added, tokens_removed = state.process(rev.text, rev.id, text_sha1)
+
+ if self.persist != PersistMethod.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:
rev_count += 1
- if self.persist:
+ if self.persist != PersistMethod.none:
# 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 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
elif re.match(r'.*\.gz$', input_filename):
cmd = ["zcat", input_filename]
elif re.match(r'.*\.bz2$', input_filename):
- cmd = ["zcat", input_filename]
+ cmd = ["bzcat", "-dk", input_filename]
try:
input_file = Popen(cmd, stdout=PIPE).stdout
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", action="store_true",
- 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.")
+parser.add_argument('-p', '--persistence', dest="persist", default="", 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 defualt 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('-u', '--url-encode', dest="urlencode", action="store_true",
help="Output url encoded text strings. This works around some data issues like newlines in editor names. In the future it may be used to output other text data.")
+parser.add_argument('-n', '--namespace-include', dest="namespace_filter", type=int, action='append',
+ help="Id number of namspace to include. Can be specified more than once.")
+
+parser.add_argument('-rs', '--regex-scanner', dest="scanner",type=str, action='append',
+ help="Find the regex match specified by -R/--match searching in: (1) comment (2) text.")
+
+parser.add_argument('-R', '--match', dest="match_regex", type=str,
+ help="The regular expression you would like to find in the string and put in capture group")
+
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)
wikiq = WikiqParser(input_file, output_file,
collapse_user=args.collapse_user,
- persist=args.persist,
- urlencode=args.urlencode)
-
+ persist=persist,
+ urlencode=args.urlencode,
+ namespaces = namespaces,
+ match_regex=args.match_regex, # adding in the new 2 args for regex searching
+ scanner=args.scanner)
wikiq.process()
else:
wikiq = WikiqParser(sys.stdin, sys.stdout,
collapse_user=args.collapse_user,
- persist=args.persist,
- urlencode=args.urlencode)
+ persist=persist,
+ #persist_legacy=args.persist_legacy,
+ urlencode=args.urlencode,
+ namespaces = namespaces,
+ match_regex=args.match_regex, # adding in the new 2 args for regex searching
+ scanner=args.scanner)
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"
projects / mediawiki_dump_tools.git / blobdiff