from deltas.tokenizers import wikitext_split
from mwdiffs.utilities import dump2diffs
import mwpersistence
-from mwpersistence.state import Version, apply_opdocs, apply_operations, persist_revision_once
+from mwpersistence.state import DiffState
from mwpersistence import Token
from mwpersistence.utilities import diffs2persistence
TO_ENCODE = ('title', 'editor')
PERSISTENCE_RADIUS=7
-# this is a simple override of mwpersistence.DiffState that doesn't do anything special for reverts.
-class WikiqDiffState(mwpersistence.DiffState):
- def _update(self, text=None, checksum=None, opdocs=None, revision=None):
- if checksum is None:
- if text is None:
- raise TypeError("Either 'text' or 'checksum' must be " +
- "specified.")
- else:
- checksum = sha1(bytes(text, 'utf8')).hexdigest()
-
- current_version = Version()
-
- # the main difference we have is that we don't do anything special for reverts
- if opdocs is not None:
- transition = apply_opdocs(opdocs, self.last.tokens or [])
- current_version.tokens, _, _ = transition
- else:
- # NOTICE: HEAVY COMPUTATION HERE!!!
- #
- # Diffs usually run in O(n^2) -- O(n^3) time and most
- # tokenizers produce a lot of tokens.
- if self.diff_processor is None:
- raise RuntimeError("DiffState cannot process raw text " +
- "without a diff_engine specified.")
- operations, _, current_tokens = \
- self.diff_processor.process(text, token_class=Token)
-
- transition = apply_operations(operations,
- self.last.tokens or [],
- current_tokens)
- current_version.tokens, _, _ = transition
-
- # Record persistence
- persist_revision_once(current_version.tokens, revision)
-
- # Update last version
- self.last = current_version
-
- # Return the tranisitoned state
- return transition
+ws_lex = ['break','whitespace']
+punct_lex = ['period','qmark','epoint','comma','colon','scolon','paren_open','paren_close','brack_open','brack_close','dbrack_close','dbrack_open','tab_close','tab_open','dcurly_close','dcurly_open','equals','bar','etc','bold','italic','tag','comment_end','comment_start']
class PersistMethod:
none = 0
segment = 2
legacy = 3
-def calculate_persistence(tokens_added, tokens_removed, exclude_ws = True, exclude_punct = False):
- cond = True
- ws_lex = ['break','whitespace']
- punct_lex = ['period','qmark','epoint','comma','colon','scolon','paren_open','paren_close','brack_open','brack_close','dbrack_close','dbrack_open','tab_close','tab_open','dcurly_close','dcurly_open','equals','bar','etc','bold','italic','tag','comment_end','comment_start']
+def calculate_persistence(tokens_added, tokens_removed, exclude_ws = False, exclude_punct = False, legacy = False):
+ if not legacy:
+ cond = lambda t: not (exclude_punct and (t.type in punct_lex)) \
+ and not(exclude_ws and (t.type in ws_lex))
- if exclude_ws:
- cond = lambda t: cond and not t.type in ws_lex
-
- if exclude_punct:
- cond = lambda t: cond and not t.type in punct_lex
-
- tokens_added = [t for t in tokens_added if cond(t)]
- tokens_removed = [t for t in tokens_removed if cond(t)]
+ tokens_added = [t for t in tokens_added if cond(t)]
+ tokens_removed = [t for t in tokens_removed if cond(t)]
return(sum([(len(x.revisions)-1) for x in tokens_added]),
len(tokens_added),
@classmethod
def from_file(cls, fh, collapse_user = False):
- cls = super(WikiqIterator, cls).from_file(fh)
cls.fh = fh
cls.collapse_user = collapse_user
- cls.namespace_map = { ns.id : ns.name for ns in
- cls.site_info.namespaces }
+ cls = super(WikiqIterator, cls).from_file(fh)
return cls
@classmethod
- def process_item(cls, item_element, namespace_map, collapse_user = False):
+ def process_item(cls, item_element, namespace_map):
+ if not hasattr(cls,'inv_namespace_map'):
+ cls.inv_namespace_map = {ns.id:name for name, ns in namespace_map.items()}
+
if item_element.tag == "page":
- return WikiqPage.from_element(item_element, namespace_map, collapse_user)
+ return WikiqPage.from_element(item_element, namespace_map, cls.inv_namespace_map, cls.collapse_user)
elif item_element.tag == "logitem":
return LogItem.from_element(item_element, namespace_map)
else:
'restrictions','collapse_user')
@classmethod
- def from_element(cls, item_element, namespace_map, collapse_user = False):
+ def from_element(cls, item_element, namespace_map, inv_namespace_map, collapse_user = False):
cls.prev_rev = None
- inv_namespace_map = {ns.id:name for name,ns in namespace_map.items()}
-
cls = super(WikiqPage, cls).from_element(item_element, namespace_map)
# following mwxml, we assume namespace 0 in cases where
if self.collapse_user:
collapsed_revs = 1
- rev.collapsed_revs = collapsed_revs
+ self.prev_rev.collapsed_revs = collapsed_revs
+ prev_rev = self.prev_rev
for rev in self.revisions:
rev = WikiqPage._correct_sha(rev)
revision.page = self
yield revision
- # 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=None, urlencode=False, namespaces = None):
window = deque(maxlen=PERSISTENCE_RADIUS)
if self.persist == PersistMethod.sequence:
- state = WikiqDiffState(SequenceMatcher(tokenizer = wikitext_split),
+ state = DiffState(SequenceMatcher(tokenizer = wikitext_split),
revert_radius=PERSISTENCE_RADIUS)
elif self.persist == PersistMethod.segment:
- state = WikiqDiffState(SegmentMatcher(tokenizer = wikitext_split),
+ state = DiffState(SegmentMatcher(tokenizer = wikitext_split),
revert_radius=PERSISTENCE_RADIUS)
else:
if len(window) == PERSISTENCE_RADIUS:
old_rev_id, old_rev_data, old_tokens_added, old_tokens_removed = window[0]
- num_token_revs, num_tokens_added, num_tokens_removed = calculate_persistence(old_tokens_added, old_tokens_removed)
+ num_token_revs, num_tokens_added, num_tokens_removed = calculate_persistence(old_tokens_added, old_tokens_removed, legacy = self.persist == PersistMethod.legacy)
old_rev_data["token_revs"] = num_token_revs
old_rev_data["tokens_added"] = num_tokens_added
rev_id, rev_data, tokens_added, tokens_removed = item
- num_token_revs, num_tokens_added, num_tokens_removed = calculate_persistence(tokens_added, tokens_removed)
+ num_token_revs, num_tokens_added, num_tokens_removed = calculate_persistence(tokens_added, tokens_removed, legacy = self.persist == PersistMethod.legacy)
rev_data["token_revs"] = num_token_revs
rev_data["tokens_added"] = num_tokens_added
projects / mediawiki_dump_tools.git / blobdiff