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New method dates_extract which finds begining and ending at once

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This commit is contained in:
Jonathan Golder
2016-03-03 17:20:57 +01:00
parent baf4ae2a07
commit 163972c924
1 changed files with 110 additions and 66 deletions
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176
redfam.py
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@@ -30,7 +30,9 @@ import locale
import re
from datetime import datetime
import mwparserfromhell as mwparser # noqa
import pywikibot
from pywikibot.tools import deprecated # noqa
import jogobot
from mysqlred import MysqlRedFam
@@ -40,12 +42,12 @@ class RedFam:
"""
Basic class for RedFams, containing the basic data structure
"""
def __init__( self, articlesList, beginning, ending=None, red_page_id=None,
status=0, fam_hash=None, heading=None ):
"""
Generates a new RedFam object
@param articlesList list List of articles
@param beginning datetime Beginning date
@param ending datetime Ending date
@@ -54,7 +56,7 @@ class RedFam:
@param fam_hash str SHA1 hash of articlesList
@param heading str Original heading of RedFam (Link)
"""
# Initial attribute values
self._articlesList = articlesList
self._beginning = beginning
@@ -63,18 +65,18 @@ class RedFam:
self._status = status
self._fam_hash = fam_hash
self._heading = heading
# Calculates the sha1 hash over self._articlesList to
# rediscover known redundance families
self.calc_fam_hash()
def __repr__( self ):
"""
Returns repression str of RedFam object
@returns str repr() string
"""
__repr = "RedFam( " + \
"articlesList=" + repr( self._articlesList ) + \
", heading=" + repr( self._heading ) + \
@@ -84,28 +86,28 @@ class RedFam:
", status=" + repr( self._status ) + \
", fam_hash=" + repr( self._fam_hash ) + \
" )"
return __repr
def calc_fam_hash( self ):
"""
Calculates the SHA-1 hash for the articlesList of redundance family.
Since we don't need security SHA-1 is just fine.
@returns str String with the hexadecimal hash digest
"""
h = hashlib.sha1()
h.update( str( self._articlesList[:8] ).encode('utf-8') )
if self._fam_hash and h.hexdigest() != self._fam_hash:
raise RedFamHashError( self._fam_hash, h.hexdigest() )
elif self._fam_hash:
return
else:
self._fam_hash = h.hexdigest()
@classmethod
def flush_db_cache( cls ):
"""
@@ -119,28 +121,28 @@ class RedFamParser( RedFam ):
Provides an interface to RedFam for adding/updating redundance families
while parsig redundance pages
"""
# Define the timestamp format
__timestamp_format = jogobot.config['redundances']['timestamp_format']
# Define section heading re.pattern
__sectionhead_pat = re.compile( r"^(=+)(.*\[\[.+\]\].*\[\[.+\]\].*)\1" )
# Define timestamp re.pattern
__timestamp_pat = re.compile( jogobot.config['redundances']
['timestamp_regex'] )
# Textpattern for recognisation of done-notices
__done_notice = ":<small>Archivierung dieses Abschnittes \
wurde gewünscht von:"
__done_notice2 = "{{Erledigt|"
def __init__( self, heading, red_page_id, red_page_archive,
beginning, ending=None ):
"""
Creates a RedFam object based on data collected while parsing red_pages
combined with possibly former known data from db
@param red_fam_heading str Wikitext heading of section
@param red_page_id int MediaWiki page_id
@param red_page_archive bool Is red_page an archive
@@ -149,57 +151,57 @@ class RedFamParser( RedFam ):
@param ending datetime Timestamp of ending
str strptime parseable string
"""
# Set object attributes:
self._red_page_id = red_page_id
self._red_page_archive = red_page_archive
self._fam_hash = None
# Method self.add_beginning sets self._beginning directly
self.add_beginning( beginning )
# Method self.add_ending sets self._ending directly
if( ending ):
self.add_ending( ending )
else:
# If no ending was provided set to None
self._ending = None
self._status = None
# Parse the provided heading of redundance section
# to set self._articlesList
self.heading_parser( heading )
# Calculates the sha1 hash over self._articlesList to
# rediscover known redundance families
self.calc_fam_hash()
# Open database connection, ask for data if existing,
# otherwise create entry
self.__handle_db()
# Check status changes
self.status()
# Triggers db update if anything changed
self.changed()
def __handle_db( self ):
"""
Handles opening of db connection
"""
# We need a connection to our mysqldb
self.__mysql = MysqlRedFam( )
self.__mysql.get_fam( self._fam_hash )
if not self.__mysql.data:
self.__mysql.add_fam( self._articlesList, self._heading,
self._red_page_id, self._beginning,
self._ending )
def heading_parser( self, heading ):
"""
Parses given red_fam_heading string and saves articles list
@@ -238,43 +240,43 @@ Maximum number of articles in red_fam exceeded, maximum number is 8, \
def add_beginning( self, beginning ):
"""
Adds the beginning date of a redundance diskussion to the object
@param datetime datetime Beginning date
"""
self._beginning = self.__datetime( beginning )
def add_ending( self, ending ):
"""
Adds the ending date of a redundance diskussion to the object.
@param datetime datetime Ending date
"""
self._ending = self.__datetime( ending )
def __datetime( self, timestamp ):
"""
Decides wether given timestamp is a parseable string or a
datetime object and returns a datetime object in both cases
@param datetime timestamp Datetime object
str timestamp Parseable string with timestamp
@returns datetime Datetime object
"""
# Make sure locale is set to 'de_DE.UTF-8' to prevent problems
# with wrong month abreviations in strptime
locale.setlocale(locale.LC_ALL, 'de_DE.UTF-8')
if( isinstance( timestamp, datetime ) ):
return timestamp
else:
result = datetime.strptime( timestamp,
type( self ).__timestamp_format )
return result
def status( self ):
"""
Handles detection of correct status
@@ -284,10 +286,10 @@ Maximum number of articles in red_fam exceeded, maximum number is 8, \
- 2 Discussion archived --> ending (normaly) present, page is archive
- 3 and greater status was set by worker script, do not change it
"""
# Do not change stati set by worker script etc.
if not self.__mysql.data['status'] > 2:
# No ending, discussion is running:
# Sometimes archived discussions also have no detectable ending
if not self._ending and not self._red_page_archive:
@@ -299,36 +301,36 @@ Maximum number of articles in red_fam exceeded, maximum number is 8, \
self._status = 2
else:
self._status = self.__mysql.data[ 'status' ]
def changed( self ):
"""
Checks wether anything has changed and maybe triggers db update
"""
# On archived red_fams do not delete possibly existing ending
if( not self._ending and self._status > 1
and self.__mysql.data[ 'ending' ] ):
self._ending = self.__mysql.data[ 'ending' ]
# Since status change means something has changed, update database
if( self._status != self.__mysql.data[ 'status' ] or
self._beginning != self.__mysql.data[ 'beginning' ] or
self._ending != self.__mysql.data[ 'ending' ] or
self._red_page_id != self.__mysql.data[ 'red_page_id' ] or
self._heading != self.__mysql.data[ 'heading' ]):
self.__mysql.update_fam( self._red_page_id, self._heading,
self._beginning, self._ending,
self._status )
@classmethod
def is_sectionheading( cls, line ):
"""
Checks wether given line is a red_fam section heading
@param str line String to check
@returns bool Returns True if it is a section heading
"""
@@ -336,7 +338,49 @@ Maximum number of articles in red_fam exceeded, maximum number is 8, \
return True
else:
return False
@classmethod
def extract_dates( cls, text, isarchive=False ):
"""
Returns tuple of the first and maybe last timestamp of a section.
Last timestamp is only returned if there is a done notice or param
*isarchiv* is set to 'True'
@param text Text to search in
@type line Any Type castable to str
@param isarchive If true skip searching done notice (on archivepages)
@type isarchive bool
@returns Timestamps, otherwise None
@returntype tuple of strs
"""
# Match all timestamps
matches = cls.__timestamp_pat.findall( str( text ) )
if matches:
# First one is beginning
# Since some timestamps are broken we need to reconstruct them
# by regex match groups
beginning = ( matches[0][0] + ", " + matches[0][1] + ". " +
matches[0][2] + ". " + matches[0][3] )
# Last one maybe is ending
# Done notice format 1
# Done notice format 2
# Or on archivepages
if ( cls.__done_notice in text or
cls.__done_notice2 in text or
isarchive ):
ending = ( matches[-1][0] + ", " + matches[-1][1] + ". " +
matches[-1][2] + ". " + matches[-1][3] )
else:
ending = None
return (beginning, ending)
@classmethod
def is_beginning( cls, line ):
"""
@@ -402,17 +446,17 @@ class RedFamWorker( RedFam ):
where discussion is finished
"""
def __init__( self, mysql_data ):
articlesList = []
for key in sorted( mysql_data.keys() ):
if 'article' in key and mysql_data[ key ]:
articlesList.append( mysql_data[ key ] )
super().__init__( articlesList, mysql_data[ 'beginning' ],
mysql_data[ 'ending' ], mysql_data[ 'red_page_id' ],
mysql_data[ 'status' ], mysql_data[ 'fam_hash' ],
mysql_data[ 'heading' ] )
@classmethod
def list_by_status( cls, status ):
"""
@@ -426,12 +470,12 @@ class RedFamWorker( RedFam ):
print(fam)
raise
class RedFamError( Exception ):
"""
Base class for all Errors of RedFam-Module
"""
def __init__( self, message=None ):
"""
Handles Instantiation of RedFamError's
@@ -440,12 +484,12 @@ class RedFamError( Exception ):
self.message = "An Error occured while executing a RedFam action"
else:
self.message = message
def __str__( self ):
"""
Output of error message
"""
return self.message
@@ -453,12 +497,12 @@ class RedFamHashError( RedFamError ):
"""
Raised when given RedFamHash does not match with calculated
"""
def __init__( self, givenHash, calculatedHash ):
message = "Given fam_hash ('{given}') does not match with \
calculated ('{calc}'".format( given=givenHash, calc=calculatedHash )
super().__init__( message )
@@ -467,8 +511,8 @@ class RedFamHeadingError ( RedFamError ):
Raised when given RedFamHeading does not match __sectionhead_pat Regex
"""
def __init__( self, heading ):
message = "Error while trying to parse section heading. Given heading \
'{heading}' does not match RegEx".format( heading=heading )
super().__init__( message )