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dumpgenerator.py
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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# dumpgenerator.py A generator of dumps for wikis
# Copyright (C) 2011-2018 WikiTeam developers
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# To learn more, read the documentation:
# https://github.com/WikiTeam/wikiteam/wiki
try:
from kitchen.text.converters import getwriter, to_unicode
except ImportError:
print "Please install the kitchen module."
try:
import xml.etree.cElementTree as ET
except ImportError:
import xml.etree.ElementTree as ET
import xml.dom.minidom as MD
import cookielib
import cPickle
import datetime
import sys
import io
import traceback
try:
import argparse
except ImportError:
print "Please install the argparse module."
sys.exit(1)
import json
try:
from hashlib import md5
except ImportError: # Python 2.4 compatibility
from md5 import new as md5
import os
import re
import subprocess
try:
import requests
except ImportError:
print "Please install or update the Requests module."
sys.exit(1)
try:
import mwclient
except ImportError:
print "Please install the mwclient module if you want to use --xmlrevisions."
try:
from lxml import etree
from lxml.builder import E
except ImportError:
print "Please install the lxml module if you want to use --xmlrevisions."
import time
import urllib
try:
from urlparse import urlparse, urlunparse
except ImportError:
from urllib.parse import urlparse, urlunparse
UTF8Writer = getwriter('utf8')
sys.stdout = UTF8Writer(sys.stdout)
__VERSION__ = '0.4.1-alpha' # major, minor, micro: semver.org
class PageMissingError(Exception):
def __init__(self, title, xml):
self.title = title
self.xml = xml
def __str__(self):
return "page '%s' not found" % self.title
class ExportAbortedError(Exception):
def __init__(self, index):
self.index = index
def __str__(self):
return "Export from '%s' did not return anything." % self.index
def getVersion():
return(__VERSION__)
def truncateFilename(other={}, filename=''):
""" Truncate filenames when downloading images with large filenames """
return filename[:other['filenamelimit']] + \
md5(filename.encode('utf-8')).hexdigest() + '.' + filename.split('.')[-1]
def delay(config={}, session=None):
""" Add a delay if configured for that """
if config['delay'] > 0:
print 'Sleeping... %d seconds...' % (config['delay'])
time.sleep(config['delay'])
def cleanHTML(raw=''):
""" Extract only the real wiki content and remove rubbish """
""" This function is ONLY used to retrieve page titles and file names when no API is available """
""" DO NOT use this function to extract page content """
# different "tags" used by different MediaWiki versions to mark where
# starts and ends content
if re.search('<!-- bodytext -->', raw):
raw = raw.split('<!-- bodytext -->')[1].split('<!-- /bodytext -->')[0]
elif re.search('<!-- start content -->', raw):
raw = raw.split(
'<!-- start content -->')[1].split('<!-- end content -->')[0]
elif re.search('<!-- Begin Content Area -->', raw):
raw = raw.split(
'<!-- Begin Content Area -->')[1].split('<!-- End Content Area -->')[0]
elif re.search('<!-- content -->', raw):
raw = raw.split('<!-- content -->')[1].split('<!-- mw_content -->')[0]
elif re.search('<article id="WikiaMainContent" class="WikiaMainContent">', raw):
raw = raw.split('<article id="WikiaMainContent" class="WikiaMainContent">')[
1].split('</article>')[0]
elif re.search('<body class=', raw):
raw = raw.split('<body class=')[1].split(
'<div class="printfooter">')[0]
else:
print raw[:250]
print 'This wiki doesn\'t use marks to split content'
sys.exit()
return raw
def handleStatusCode(response):
statuscode = response.status_code
if statuscode >= 200 and statuscode < 300:
return
print "HTTP Error %d." % statuscode
if statuscode >= 300 and statuscode < 400:
print "Redirect should happen automatically: please report this as a bug."
print response.url
elif statuscode == 400:
print "Bad Request: The wiki may be malfunctioning."
print "Please try again later."
print response.url
sys.exit(1)
elif statuscode == 401 or statuscode == 403:
print "Authentication required."
print "Please use --user and --pass."
print response.url
elif statuscode == 404:
print "Not found. Is Special:Export enabled for this wiki?"
print response.url
sys.exit(1)
elif statuscode == 429 or (statuscode >= 500 and statuscode < 600):
print "Server error, max retries exceeded."
print "Please resume the dump later."
print response.url
sys.exit(1)
def getNamespacesScraper(config={}, session=None):
""" Hackishly gets the list of namespaces names and ids from the dropdown in the HTML of Special:AllPages """
""" Function called if no API is available """
namespaces = config['namespaces']
namespacenames = {0: ''} # main is 0, no prefix
if namespaces:
r = session.post(
url=config['index'], params={'title': 'Special:Allpages'}, timeout=60)
raw = r.text
delay(config=config, session=session)
# [^>]*? to include selected="selected"
m = re.compile(
r'<option [^>]*?value="(?P<namespaceid>\d+)"[^>]*?>(?P<namespacename>[^<]+)</option>').finditer(raw)
if 'all' in namespaces:
namespaces = []
for i in m:
namespaces.append(int(i.group("namespaceid")))
namespacenames[int(i.group("namespaceid"))] = i.group(
"namespacename")
else:
# check if those namespaces really exist in this wiki
namespaces2 = []
for i in m:
if int(i.group("namespaceid")) in namespaces:
namespaces2.append(int(i.group("namespaceid")))
namespacenames[int(i.group("namespaceid"))] = i.group(
"namespacename")
namespaces = namespaces2
else:
namespaces = [0]
namespaces = list(set(namespaces)) # uniques
print '%d namespaces found' % (len(namespaces))
return namespaces, namespacenames
def getNamespacesAPI(config={}, session=None):
""" Uses the API to get the list of namespaces names and ids """
namespaces = config['namespaces']
namespacenames = {0: ''} # main is 0, no prefix
if namespaces:
r = session.get(
url=config['api'],
params={
'action': 'query',
'meta': 'siteinfo',
'siprop': 'namespaces',
'format': 'json'},
timeout=60
)
result = getJSON(r)
delay(config=config, session=session)
try:
nsquery = result['query']['namespaces']
except KeyError:
print "Error: could not get namespaces from the API request."
print "HTTP %d" % r.status_code
print r.text
return None
if 'all' in namespaces:
namespaces = []
for i in nsquery.keys():
if int(i) < 0: # -1: Special, -2: Media, excluding
continue
namespaces.append(int(i))
namespacenames[int(i)] = nsquery[i]['*']
else:
# check if those namespaces really exist in this wiki
namespaces2 = []
for i in nsquery.keys():
bi = i
i = int(i)
if i < 0: # -1: Special, -2: Media, excluding
continue
if i in namespaces:
namespaces2.append(i)
namespacenames[i] = nsquery[bi]['*']
namespaces = namespaces2
else:
namespaces = [0]
namespaces = list(set(namespaces)) # uniques
print '%d namespaces found' % (len(namespaces))
return namespaces, namespacenames
def getPageTitlesAPI(config={}, session=None):
""" Uses the API to get the list of page titles """
titles = []
namespaces, namespacenames = getNamespacesAPI(
config=config, session=session)
for namespace in namespaces:
if namespace in config['exnamespaces']:
print ' Skipping namespace = %d' % (namespace)
continue
c = 0
print ' Retrieving titles in the namespace %d' % (namespace)
apiurl = urlparse(config['api'])
site = mwclient.Site(apiurl.netloc, apiurl.path.replace("api.php", ""), scheme=apiurl.scheme)
for page in site.allpages(namespace=namespace):
title = page.name
titles.append(title)
c += 1
yield title
if len(titles) != len(set(titles)):
print 'Probably a loop, switching to next namespace'
titles = list(set(titles))
delay(config=config, session=session)
print ' %d titles retrieved in the namespace %d' % (c, namespace)
def getPageTitlesScraper(config={}, session=None):
""" Scrape the list of page titles from Special:Allpages """
titles = []
namespaces, namespacenames = getNamespacesScraper(
config=config, session=session)
for namespace in namespaces:
print ' Retrieving titles in the namespace', namespace
url = '%s?title=Special:Allpages&namespace=%s' % (
config['index'], namespace)
r = session.get(url=url, timeout=60)
raw = r.text
raw = cleanHTML(raw)
r_title = r'title="(?P<title>[^>]+)">'
r_suballpages = ''
r_suballpages1 = r'&from=(?P<from>[^>]+)&to=(?P<to>[^>]+)">'
r_suballpages2 = r'Special:Allpages/(?P<from>[^>]+)">'
r_suballpages3 = r'&from=(?P<from>[^>]+)" title="[^>]+">'
if re.search(r_suballpages1, raw):
r_suballpages = r_suballpages1
elif re.search(r_suballpages2, raw):
r_suballpages = r_suballpages2
elif re.search(r_suballpages3, raw):
r_suballpages = r_suballpages3
else:
pass # perhaps no subpages
# Should be enought subpages on Special:Allpages
deep = 50
c = 0
oldfr = ''
checked_suballpages = []
rawacum = raw
while r_suballpages and re.search(r_suballpages, raw) and c < deep:
# load sub-Allpages
m = re.compile(r_suballpages).finditer(raw)
for i in m:
fr = i.group('from')
currfr = fr
if oldfr == currfr:
# We are looping, exit the loop
pass
if r_suballpages == r_suballpages1:
to = i.group('to')
name = '%s-%s' % (fr, to)
url = '%s?title=Special:Allpages&namespace=%s&from=%s&to=%s' % (
config['index'], namespace, fr, to) # do not put urllib.quote in fr or to
# fix, esta regexp no carga bien todas? o falla el r_title en
# este tipo de subpag? (wikiindex)
elif r_suballpages == r_suballpages2:
# clean &namespace=\d, sometimes happens
fr = fr.split('&namespace=')[0]
name = fr
url = '%s?title=Special:Allpages/%s&namespace=%s' % (
config['index'], name, namespace)
elif r_suballpages == r_suballpages3:
fr = fr.split('&namespace=')[0]
name = fr
url = '%s?title=Special:Allpages&from=%s&namespace=%s' % (
config['index'], name, namespace)
if name not in checked_suballpages:
# to avoid reload dupe subpages links
checked_suballpages.append(name)
delay(config=config, session=session)
r = session.get(url=url, timeout=10)
#print 'Fetching URL: ', url
raw = r.text
raw = cleanHTML(raw)
rawacum += raw # merge it after removed junk
print ' Reading', name, len(raw), 'bytes', \
len(re.findall(r_suballpages, raw)), 'subpages', \
len(re.findall(r_title, raw)), 'pages'
delay(config=config, session=session)
oldfr = currfr
c += 1
c = 0
m = re.compile(r_title).finditer(rawacum)
for i in m:
t = undoHTMLEntities(text=i.group('title'))
if not t.startswith('Special:'):
if t not in titles:
titles.append(t)
c += 1
print ' %d titles retrieved in the namespace %d' % (c, namespace)
return titles
def getPageTitles(config={}, session=None):
""" Get list of page titles """
# http://en.wikipedia.org/wiki/Special:AllPages
# http://archiveteam.org/index.php?title=Special:AllPages
# http://www.wikanda.es/wiki/Especial:Todas
print 'Loading page titles from namespaces = %s' % (config['namespaces'] and ','.join([str(i) for i in config['namespaces']]) or 'None')
print 'Excluding titles from namespaces = %s' % (config['exnamespaces'] and ','.join([str(i) for i in config['exnamespaces']]) or 'None')
titles = []
if 'api' in config and config['api']:
try:
titles = getPageTitlesAPI(config=config, session=session)
except:
print "Error: could not get page titles from the API"
titles = getPageTitlesScraper(config=config, session=session)
elif 'index' in config and config['index']:
titles = getPageTitlesScraper(config=config, session=session)
titlesfilename = '%s-%s-titles.txt' % (
domain2prefix(config=config), config['date'])
titlesfile = open('%s/%s' % (config['path'], titlesfilename), 'wt')
c = 0
for title in titles:
titlesfile.write(title.encode('utf-8') + "\n")
c += 1
# TODO: Sort to remove dupes? In CZ, Widget:AddThis appears two times:
# main namespace and widget namespace.
# We can use sort -u in UNIX, but is it worth it?
titlesfile.write(u'--END--\n')
titlesfile.close()
print 'Titles saved at...', titlesfilename
print '%d page titles loaded' % (c)
return titlesfilename
def getImageNames(config={}, session=None):
""" Get list of image names """
print 'Retrieving image filenames'
images = []
if 'api' in config and config['api']:
images = getImageNamesAPI(config=config, session=session)
elif 'index' in config and config['index']:
images = getImageNamesScraper(config=config, session=session)
# images = list(set(images)) # it is a list of lists
images.sort()
print '%d image names loaded' % (len(images))
return images
def getXMLHeader(config={}, session=None):
""" Retrieve a random page to extract XML headers (namespace info, etc) """
# get the header of a random page, to attach it in the complete XML backup
# similar to: <mediawiki xmlns="http://www.mediawiki.org/xml/export-0.3/"
# xmlns:x....
randomtitle = 'Main_Page' # previously AMF5LKE43MNFGHKSDMRTJ
print config['api']
xml = ''
if config['xmlrevisions'] and config['api'] and config['api'].endswith("api.php"):
try:
print 'Getting the XML header from the API'
# Export and exportnowrap exist from MediaWiki 1.15, allpages from 1.18
r = requests.get(config['api'] + '?action=query&export=1&exportnowrap=1&list=allpages&aplimit=1', timeout=10)
xml = r.text
# Otherwise try without exportnowrap, e.g. Wikia returns a blank page on 1.19
if not re.match(r"\s*<mediawiki", xml):
r = requests.get(config['api'] + '?action=query&export=1&list=allpages&aplimit=1&format=json', timeout=10)
try:
xml = r.json()['query']['export']['*']
except KeyError:
pass
if not re.match(r"\s*<mediawiki", xml):
# Do without a generator, use our usual trick of a random page title
r = requests.get(config['api'] + '?action=query&export=1&exportnowrap=1&titles=' + randomtitle, timeout=10)
xml = r.text
# Again try without exportnowrap
if not re.match(r"\s*<mediawiki", xml):
r = requests.get(config['api'] + '?action=query&export=1&format=json&titles=' + randomtitle, timeout=10)
try:
xml = r.json()['query']['export']['*']
except KeyError:
pass
except requests.exceptions.RetryError:
pass
else:
try:
xml = "".join([x for x in selectXMLQueryMode(config=config, title=randomtitle, verbose=False, session=session)])
except PageMissingError as pme:
# The <page> does not exist. Not a problem, if we get the <siteinfo>.
xml = pme.xml
# Issue 26: Account for missing "Special" namespace.
# Hope the canonical special name has not been removed.
# http://albens73.fr/wiki/api.php?action=query&meta=siteinfo&siprop=namespacealiases
except ExportAbortedError:
try:
if config['api']:
print "Trying the local name for the Special namespace instead"
r = session.get(
url=config['api'],
params={
'action': 'query',
'meta': 'siteinfo',
'siprop': 'namespaces',
'format': 'json'},
timeout=60
)
config['export'] = json.loads(r.text)['query']['namespaces']['-1']['*'] \
+ ':Export'
xml = "".join([x for x in selectXMLQueryMode(config=config, title=randomtitle, verbose=False, session=session)])
except PageMissingError as pme:
xml = pme.xml
except ExportAbortedError:
pass
header = xml.split('</mediawiki>')[0]
if not re.match(r"\s*<mediawiki", xml):
if config['xmlrevisions']:
# Try again the old way
print 'Export test via the API failed. Wiki too old? Trying without xmlrevisions.'
config['xmlrevisions'] = False
header, config = getXMLHeader(config=config, session=session)
else:
print 'XML export on this wiki is broken, quitting.'
logerror(u'XML export on this wiki is broken, quitting.')
sys.exit()
return header, config
def getXMLFileDesc(config={}, title='', session=None):
""" Get XML for image description page """
config['curonly'] = 1 # tricky to get only the most recent desc
return("".join([x for x in selectXMLQueryMode( config=config, title=title, verbose=False, session=session)]))
def getUserAgent():
""" Return a cool user-agent to hide Python user-agent """
useragents = [
# firefox
#'Mozilla/5.0 (X11; Linux x86_64; rv:72.0) Gecko/20100101 Firefox/72.0',
#'Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0',
'Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0'
]
return useragents[0]
def logerror(config={}, text=''):
""" Log error in file """
if text:
with open('%s/errors.log' % (config['path']), 'a') as outfile:
output = u'%s: %s\n' % (
datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S'), text)
outfile.write(output.encode('utf-8'))
def reconstructRevisions(root=None):
#print ET.tostring(rev)
page = ET.Element('stub')
edits = 0
for rev in root.find('query').find('pages').find('page').find('revisions').findall('rev'):
try:
rev_ = ET.SubElement(page,'revision')
ET.SubElement(rev_,'id').text = rev.attrib['revid']
ET.SubElement(rev_,'timestamp').text = rev.attrib['timestamp']
contributor = ET.SubElement(rev_,'contributor')
if not rev.attrib.has_key('userhidden'):
ET.SubElement(contributor,'username').text = rev.attrib['user']
ET.SubElement(contributor,'id').text = rev.attrib['userid']
else:
contributor.set('deleted','deleted')
comment = ET.SubElement(rev_,'comment')
if not rev.attrib.has_key('commenthidden'):
comment.text = rev.attrib['comment']
else:
comment.set('deleted','deleted')
# some revision does not return model and format, so just use hard-code
ET.SubElement(rev_,'model').text = 'wikitext'
ET.SubElement(rev_,'format').text = 'text/x-wiki'
text = ET.SubElement(rev_,'text')
if not rev.attrib.has_key('texthidden'):
text.attrib['xml:space'] = "preserve"
text.attrib['bytes'] = rev.attrib['size']
text.text = rev.text
else:
text.set('deleted','deleted')
# delete sha1 here :)
#sha1 = ET.SubElement(rev_,'sha1')
#if not rev.attrib.has_key('sha1missing'):
#sha1.text = rev.attrib['sha1']
if rev.attrib.has_key('minor'):
ET.SubElement(rev_,'minor')
edits += 1
except Exception as e:
#logerror(config=config, text='Error reconstructing revision, xml:%s' % (ET.tostring(rev)))
print ET.tostring(rev)
traceback.print_exc()
page = None
edits = 0
raise e
return page,edits
def getXMLPageCoreWithApi(headers={}, params={}, config={}, session=None):
""" """
# just send the API request
# if it fails, it will reduce params['rvlimit']
xml = ''
c = 0
maxseconds = 100 # max seconds to wait in a single sleeping
maxretries = config['retries'] # x retries and skip
increment = 20 # increment every retry
while not re.search(r'</api>' if not config['curonly'] else r'</mediawiki>', xml) or re.search(r'</error>', xml):
if c > 0 and c < maxretries:
wait = increment * c < maxseconds and increment * \
c or maxseconds # incremental until maxseconds
print ' In attempt %d, XML for "%s" is wrong. Waiting %d seconds and reloading...'%(c, params['titles' if config['apiquery'] else 'pages'], wait)
time.sleep(wait)
# reducing server load requesting smallest chunks (if curonly then
# rvlimit = 1 from mother function)
if params['rvlimit'] > 1:
params['rvlimit'] = params['rvlimit'] / 2 # half
if c >= maxretries:
print ' We have retried %d times' % (c)
print ' MediaWiki error for "%s", network error or whatever...' % (params['titles' if config['apiquery'] else 'pages'])
# If it's not already what we tried: our last chance, preserve only the last revision...
# config['curonly'] means that the whole dump is configured to save only the last,
# params['curonly'] should mean that we've already tried this
# fallback, because it's set by the following if and passed to
# getXMLPageCore
# TODO: save only the last version when failed
print ' Saving in the errors log, and skipping...'
logerror(
config=config,
text=u'Error while retrieving the last revision of "%s". Skipping.' %
(params['titles' if config['apiquery'] else 'pages']).decode('utf-8'))
#raise ExportAbortedError(config['index'])
return '' # empty xml
# FIXME HANDLE HTTP Errors HERE
try:
r = session.get(url=config['api'], params=params, headers=headers)
handleStatusCode(r)
xml = fixBOM(r)
#print xml
except requests.exceptions.ConnectionError as e:
print ' Connection error: %s'%(str(e[0]))
xml = ''
c += 1
return xml
def getXMLPageWithApi(config={}, title='', verbose=True, session=None):
""" Get the full history (or current only) of a page using API:Query
if params['curonly'] is set, then using export&exportwrap to export
"""
title_ = title
title_ = re.sub(' ', '_', title_)
# do not convert & into %26, title_ = re.sub('&', '%26', title_)
# action=query&rvlimit=50&format=xml&prop=revisions&titles=TITLE_HERE
# &rvprop=timestamp%7Cuser%7Ccomment%7Ccontent%7Cids%7Cuserid%7Csha1%7Csize
#print 'current:%s' % (title_)
if not config['curonly']:
params = {'titles': title_, 'action': 'query','format':'xml',
'prop':'revisions',
'rvprop' : 'timestamp|user|comment|content|ids|userid|sha1|size|flags',
'rvcontinue' : None,
'rvlimit' : 10 # TODO: set this by commandline
}
else:
params = {'titles': title_, 'action': 'query','format':'xml','export':1,'exportnowrap':1}
#print 'params:%s' % (params)
if not config['curonly']:
firstpartok = False
lastcontinue = None
numberofedits = 0
ret = ''
while True:
# in case the last request is not right, saving last time's progress
if not firstpartok:
try:
lastcontinue = params['rvcontinue']
except:
lastcontinue = None
xml = getXMLPageCoreWithApi(params=params, config=config, session=session)
if xml == "":
#just return so that we can continue, and getXMLPageCoreWithApi will log the error
return
try:
root = ET.fromstring(xml.encode('utf-8'))
except:
continue
try:
retpage = root.find('query').find('pages').find('page')
except:
continue
if retpage.attrib.has_key('missing') or retpage.attrib.has_key('invalid'):
print 'Page not found'
raise PageMissingError(params['titles'], xml)
if not firstpartok:
try:
# build the firstpart by ourselves to improve the memory usage
ret = ' <page>\n'
ret += ' <title>%s</title>\n' %(retpage.attrib['title'])
ret += ' <ns>%s</ns>\n' % (retpage.attrib['ns'])
ret += ' <id>%s</id>\n' % (retpage.attrib['pageid'])
except:
firstpartok = False
continue
else:
firstpartok = True
yield ret
try:
ret = ''
edits = 0
if config['curonly'] or root.find('continue') == None:
# transform the revision
rev_,edits = reconstructRevisions(root=root)
xmldom = MD.parseString('<stub1>'+ET.tostring(rev_)+'</stub1>')
# convert it into text in case it throws MemoryError
# delete the first three line and last two line,which is for setting the indent
ret += ''.join(xmldom.toprettyxml(indent=' ').splitlines(True)[3:-2])
yield ret
numberofedits += edits
break
else:
rev_,edits = reconstructRevisions(root=root)
xmldom = MD.parseString('<stub1>' + ET.tostring(rev_) + '</stub1>')
ret += ''.join(xmldom.toprettyxml(indent=' ').splitlines(True)[3:-2])
params['rvcontinue'] = root.find('continue').attrib['rvcontinue']
numberofedits += edits
yield ret
except:
traceback.print_exc()
params['rvcontinue'] = lastcontinue
ret = ''
yield ' </page>\n'
else:
xml = getXMLPageCoreWithApi(params=params, config=config, session=session)
if xml == "":
raise ExportAbortedError(config['index'])
if not "</page>" in xml:
raise PageMissingError(params['titles'], xml)
else:
# strip these sha1s sums which keep showing up in the export and
# which are invalid for the XML schema (they only apply to
# revisions)
xml = re.sub(r'\n\s*<sha1>\w+</sha1>\s*\n', r'\n', xml)
xml = re.sub(r'\n\s*<sha1/>\s*\n', r'\n', xml)
yield xml.split("</page>")[0]
# just for looking good :)
r_timestamp = r'<timestamp>([^<]+)</timestamp>'
numberofedits = 0
numberofedits += len(re.findall(r_timestamp, xml))
yield "</page>\n"
if verbose:
if (numberofedits == 1):
print ' %s, 1 edit' % (title.strip())
else:
print ' %s, %d edits' % (title.strip(), numberofedits)
def getXMLPageCore(headers={}, params={}, config={}, session=None):
""" """
# returns a XML containing params['limit'] revisions (or current only), ending in </mediawiki>
# if retrieving params['limit'] revisions fails, returns a current only version
# if all fail, returns the empty string
xml = ''
c = 0
maxseconds = 100 # max seconds to wait in a single sleeping
maxretries = config['retries'] # x retries and skip
increment = 20 # increment every retry
while not re.search(r'</mediawiki>', xml):
if c > 0 and c < maxretries:
wait = increment * c < maxseconds and increment * \
c or maxseconds # incremental until maxseconds
print ' In attempt %d, XML for "%s" is wrong. Waiting %d seconds and reloading...' %(c, params['pages'], wait)
time.sleep(wait)
# reducing server load requesting smallest chunks (if curonly then
# limit = 1 from mother function)
if params['limit'] > 1:
params['limit'] = params['limit'] / 2 # half
if c >= maxretries:
print ' We have retried %d times' % (c)
print ' MediaWiki error for "%s", network error or whatever...' % (params['pages'])
if config['failfast']:
print "Exit, it will be for another time"
sys.exit()
# If it's not already what we tried: our last chance, preserve only the last revision...
# config['curonly'] means that the whole dump is configured to save only the last,
# params['curonly'] should mean that we've already tried this
# fallback, because it's set by the following if and passed to
# getXMLPageCore
if not config['curonly'] and not 'curonly' in params:
print ' Trying to save only the last revision for this page...'
params['curonly'] = 1
logerror(
config=config,
text=u'Error while retrieving the full history of "%s". Trying to save only the last revision for this page' %
(params['pages'])
)
return getXMLPageCore(
headers=headers,
params=params,
config=config,
session=session
)
else:
print ' Saving in the errors log, and skipping...'
logerror(
config=config,
text=u'Error while retrieving the last revision of "%s". Skipping.' %
(params['pages']))
raise ExportAbortedError(config['index'])
return '' # empty xml
# FIXME HANDLE HTTP Errors HERE
try:
r = session.post(url=config['index'], params=params, headers=headers, timeout=10)
handleStatusCode(r)
xml = fixBOM(r)
except requests.exceptions.ConnectionError as e:
print ' Connection error: %s'%(str(e[0]))
xml = ''
except requests.exceptions.ReadTimeout as e:
print ' Read timeout: %s'%(str(e[0]))
xml = ''
c += 1
return xml
def getXMLPage(config={}, title='', verbose=True, session=None):
""" Get the full history (or current only) of a page """
# if server errors occurs while retrieving the full page history, it may return [oldest OK versions] + last version, excluding middle revisions, so it would be partially truncated
# http://www.mediawiki.org/wiki/Manual_talk:Parameters_to_Special:Export#Parameters_no_longer_in_use.3F
limit = 1000
truncated = False
title_ = title
title_ = re.sub(' ', '_', title_)
# do not convert & into %26, title_ = re.sub('&', '%26', title_)
try:
params = {'title': config['export'], 'pages': title_, 'action': 'submit'}
except KeyError:
params = {'title': 'Special:Export', 'pages': title_, 'action': 'submit'}
if config['curonly']:
params['curonly'] = 1
params['limit'] = 1
else:
params['offset'] = '1' # 1 always < 2000s
params['limit'] = limit
# in other case, do not set params['templates']
if 'templates' in config and config['templates']:
params['templates'] = 1
xml = getXMLPageCore(params=params, config=config, session=session)
if xml == "":
raise ExportAbortedError(config['index'])
if not "</page>" in xml:
raise PageMissingError(params['title'], xml)
else:
# strip these sha1s sums which keep showing up in the export and
# which are invalid for the XML schema (they only apply to
# revisions)
xml = re.sub(r'\n\s*<sha1>\w+</sha1>\s*\n', r'\n', xml)
xml = re.sub(r'\n\s*<sha1/>\s*\n', r'\n', xml)
yield xml.split("</page>")[0]
# if complete history, check if this page history has > limit edits, if so, retrieve all using offset if available
# else, warning about Special:Export truncating large page histories
r_timestamp = r'<timestamp>([^<]+)</timestamp>'
numberofedits = 0
numberofedits += len(re.findall(r_timestamp, xml))
# search for timestamps in xml to avoid analysing empty pages like
# Special:Allpages and the random one
if not config['curonly'] and re.search(r_timestamp, xml):
while not truncated and params['offset']: # next chunk
# get the last timestamp from the acum XML
params['offset'] = re.findall(r_timestamp, xml)[-1]
try:
xml2 = getXMLPageCore(
params=params, config=config, session=session)
except MemoryError:
print "The page's history exceeds our memory, halving limit."
params['limit'] = params['limit'] / 2
continue
# are there more edits in this next XML chunk or no <page></page>?
if re.findall(r_timestamp, xml2):
if re.findall(r_timestamp, xml2)[-1] == params['offset']:
# again the same XML, this wiki does not support params in
# Special:Export, offer complete XML up to X edits (usually
# 1000)
print 'ATTENTION: This wiki does not allow some parameters in Special:Export, therefore pages with large histories may be truncated'
truncated = True
break
else:
""" </namespaces>
</siteinfo>
<page>
<title>Main Page</title>
<id>15580374</id>
<restrictions>edit=sysop:move=sysop</restrictions> (?)
<revision>
<id>418009832</id>
<timestamp>2011-03-09T19:57:06Z</timestamp>
<contributor>
"""
# offset is OK in this wiki, merge with the previous chunk
# of this page history and continue
try:
xml2 = xml2.split("</page>")[0]
yield ' <revision>' + ('<revision>'.join(xml2.split('<revision>')[1:]))
except MemoryError:
print "The page's history exceeds our memory, halving limit."
params['limit'] = params['limit'] / 2
continue
xml = xml2
numberofedits += len(re.findall(r_timestamp, xml))
else:
params['offset'] = '' # no more edits in this page history
yield "</page>\n"
if verbose:
if (numberofedits == 1):
print ' %s, 1 edit' % (title.strip())
else:
print ' %s, %d edits' % (title.strip(), numberofedits)
def selectXMLQueryMode(config={}, title='', verbose=True, session=None):
if config['apiquery']:
#Using api.php?Query instead of relying on Special:Export
return getXMLPageWithApi(config=config, title=title, verbose=verbose, session=session)
else:
#Using the traditional method(default)
return getXMLPage(config=config, title=title, verbose=verbose, session=session)
return ''
def makeXmlPageFromRaw(xml):
""" Discard the metadata around a <page> element in <mediawiki> string"""
root = etree.XML(xml)
find = etree.XPath("//*[local-name() = 'page']")
# The tag will inherit the namespace, like:
# <page xmlns="http://www.mediawiki.org/xml/export-0.10/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
# FIXME: pretty_print doesn't seem to work, only adds a newline
return etree.tostring(find(root)[0], pretty_print=True)
def cleanXML(xml=''):
""" Trim redundant info from the XML however it comes """
# do not touch XML codification, leave AS IS
if re.search(r'</siteinfo>\n', xml):
xml = xml.split('</siteinfo>\n')[1]
if re.search(r'</mediawiki>', xml):
xml = xml.split('</mediawiki>')[0]
return xml
def generateXMLDump(config={}, titles=[], start=None, session=None):
""" Generates a XML dump for a list of titles or from revision IDs """
# TODO: titles is now unused.
header, config = getXMLHeader(config=config, session=session)
footer = '</mediawiki>\n' # new line at the end
xmlfilename = '%s-%s-%s.xml' % (domain2prefix(config=config),
config['date'],
config['curonly'] and 'current' or 'history')
xmlfile = ''
lock = True
if config['xmlrevisions']:
if start:
print("WARNING: will try to start the download from title: {}".format(start))
xmlfile = open('%s/%s' % (config['path'], xmlfilename), 'a')
else:
print 'Retrieving the XML for every page from the beginning'
xmlfile = open('%s/%s' % (config['path'], xmlfilename), 'w')
xmlfile.write(header.encode('utf-8'))
try:
r_timestamp = r'<timestamp>([^<]+)</timestamp>'
for xml in getXMLRevisions(config=config, session=session, start=start):
numrevs = len(re.findall(r_timestamp, xml))
# Due to how generators work, it's expected this may be less
# TODO: get the page title and reuse the usual format "X title, y edits"
print " %d more revisions exported" % numrevs
xml = cleanXML(xml=xml)
xmlfile.write(xml.encode('utf-8'))
except AttributeError as e:
print(e)
print "This API library version is not working"
sys.exit()
else:
print 'Retrieving the XML for every page from "%s"' % (start and start or 'start')
if start:
print "Removing the last chunk of past XML dump: it is probably incomplete."
for i in reverse_readline('%s/%s' % (config['path'], xmlfilename), truncate=True):
pass
else:
# requested complete xml dump
lock = False
xmlfile = open('%s/%s' % (config['path'], xmlfilename), 'w')
xmlfile.write(header.encode('utf-8'))
xmlfile.close()
xmlfile = open('%s/%s' % (config['path'], xmlfilename), 'a')
c = 1
for title in readTitles(config, start):
if not title:
continue
if title == start: # start downloading from start, included
lock = False
if lock:
continue