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Commit 8995314c authored by Jean-Paul Smets's avatar Jean-Paul Smets
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NO longer needed since all documents are potentially external documents. 

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@13569 20353a03-c40f-0410-a6d1-a30d3c3de9de
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product/ERP5/Document/ExternalDocument.py deleted 100644 → 0
View file @ 15161f5c
##############################################################################
#
# Copyright (c) 2002-2006 Nexedi SARL and Contributors. All Rights Reserved.
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
from AccessControl import ClassSecurityInfo
from Products.CMFCore.WorkflowCore import WorkflowMethod
from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
from Products.ERP5.Document.Document import Document
from Products.CMFCore.utils import getToolByName
import mimetypes
import re
import urllib
from htmlentitydefs import name2codepoint
from DateTime import DateTime
class SpiderException(Exception):
def __init__(self,code, msg):
msg="%i: %s" % (code, msg)
Exception.__init__(self,msg)
class Opener(urllib.FancyURLopener):
def http_error_default(self, url, fp, code, msg, headers):
raise SpiderException(code, msg)
class ExternalDocument(Document):
"""
caching sources from outside
This is basically an abstract class
classes deriving from it should overwrite method _processData (this
is the one that does something with character data obtained from source)
Spidering method supports http, ftp and file protocols, and possibly many others
"""
# CMF Type Definition
meta_type = 'ERP5 External Document'
portal_type = 'External Document'
isPortalContent = 1
isRADContent = 1
# Declarative security
security = ClassSecurityInfo()
security.declareObjectProtected(Permissions.AccessContentsInformation)
# Default Properties
property_sheets = ( PropertySheet.Base
, PropertySheet.CategoryCore
, PropertySheet.DublinCore
, PropertySheet.Version
, PropertySheet.Reference
, PropertySheet.Document
, PropertySheet.TextDocument
, PropertySheet.Url
, PropertySheet.ExternalDocument
)
protocols=(('Web page','http'),('FTP site','ftp'),('Local file','file'),)
searchable_property_list = Document.searchable_property_list + ('text_content',)
security.declareProtected(Permissions.View, 'getProtocolList')
def getProtocolList(self):
"""
"""
return [x[1] for x in self.protocols]
security.declareProtected(Permissions.View, 'getProtocolItemList')
def getProtocolItemList(self):
"""
"""
return self.protocols
security.declarePrivate(Permissions.View, '_spiderSource')
def _spiderSource(self):
"""
FancyURLopener can open various protocols
"""
op=Opener()
f=op.open(self.getQualifiedUrl())
s=f.read()
inf=f.info()
return s, inf
security.declarePrivate('_processData')
def _processData(self,s, inf):
raise Exception('this should be implemented in subclass')
security.declareProtected(Permissions.ModifyPortalContent,'resetTopObject')
def resetTopObject(self):
'''
abstract function for maintaining interface
call before beginning recursive spidering
used mostly in web pages
'''
pass
security.declareProtected(Permissions.View, 'getProtocolItemList')
def spiderSource(self):
"""
spiders external datasource
sets status message
returned value tells us if it succeeded or failed
"""
portal_workflow = getToolByName(self, 'portal_workflow')
try:
s,inf=self._spiderSource()
except Exception,e:
self.log(e,level=1)
msg = "Tried on %s: %s" % (self._time(),str(e))
portal_workflow.doActionFor(self, 'process', comment=msg)
return False
chars=len(s)
if chars==0:
msg = "Tried on %s: got empty string" % self._time()
portal_workflow.doActionFor(self, 'process', comment=msg)
return False
try:
s=self._processData(s,inf)
except Exception,e:
self.log(e,level=1)
msg = "Spidered on %s, %i chars, but could not process; reason: %s" % (self._time(), chars, str(e))
portal_workflow.doActionFor(self, 'process', comment=msg)
return False
self.setTextContent(s)
msg = "Spidered on %s, %i chars, recorded %i chars" % (self._time(), chars, len(s))
portal_workflow.doActionFor(self, 'process', comment=msg)
return True
security.declareProtected(Permissions.View, 'getProtocolItemList')
def getQualifiedUrl(self):
"""
this should be in the Url, not here
otherwise why does the url have a property 'url_protocol'?
"""
return (self.getUrlProtocol() or '')+'://'+(self.getUrlString() or '')
def _time(self):
return DateTime().strftime('%Y/%m/%d %H:%M:%S')
# vim: syntax=python shiftwidth=2
product/ERP5/Document/ExternalWebPage.py deleted 100644 → 0
View file @ 15161f5c
##############################################################################
#
# Copyright (c) 2002-2006 Nexedi SARL and Contributors. All Rights Reserved.
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
from AccessControl import ClassSecurityInfo
from Products.CMFCore.WorkflowCore import WorkflowMethod
from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
from Products.ERP5.Document.File import stripHtml
from Products.ERP5.Document.ExternalDocument import ExternalDocument, SpiderException
from Products.CMFCore.utils import getToolByName
import mimetypes, re, urllib
from htmlentitydefs import name2codepoint
rx=[]
rx.append(re.compile('<!--.*?-->',re.DOTALL|re.MULTILINE)) # clear comments (sometimes JavaScript code in comments contains > chars)
rx.append(re.compile('<[^>]*?>',re.DOTALL|re.MULTILINE)) # clear tags
rx.append(re.compile('\s+')) # compress multiple spaces
def clearHtml(s):
for r in rx:
s=r.sub(" ",s)
return s
tgtencoding='utf-8'
encodings=['iso-8859-2','iso-8859-15','windows-1250']
rx_charset=re.compile('<meta.*charset="?([\w\d\-]*)',re.DOTALL|re.MULTILINE|re.IGNORECASE)
def recode(s):
"""
maybe it can be useful system-wide
"""
_encodings=encodings[:] # local copy
_encodings.insert(0,tgtencoding) # if not declared or declared wrongly, we try
m=rx_charset.search(s)
if m and len(m.groups())>0:
enc=m.groups()[0].lower()
if enc==tgtencoding:
return s
if enc in _encodings:
_encodings.remove(enc)
_encodings.insert(0,enc) # we'll start from what we've found
for enc in _encodings:
try:
return s.decode(enc).encode('utf-8')
except UnicodeDecodeError, LookupError:
pass
raise CanNotDecode('sorry')
def _convertEntities(txt,rx,mapper=None):
def repl(code):
if mapper:
code=mapper.get(code)
if code is None:
return ''
return unichr(int(code)).encode(tgtencoding)
res=re.split(rx,txt)
res[1::2]=map(repl,res[1::2]) # Isn't it beautiful? :)
return ''.join(res)
rx_chars=re.compile('&#(\d{3});')
rx_ents=re.compile('&(\w{1,6});')
def convertEntities(txt):
txt=_convertEntities(txt,rx_chars)
txt=_convertEntities(txt,rx_ents, name2codepoint)
return txt
class ExternalWebPage(ExternalDocument):
"""
caching sources from outside
"""
# CMF Type Definition
meta_type = 'ERP5 External Web Page'
portal_type = 'External Web Page'
isPortalContent = 1
isRADContent = 1
# Declarative security
security = ClassSecurityInfo()
security.declareObjectProtected(Permissions.AccessContentsInformation)
# Default Properties
property_sheets = ( PropertySheet.Base
, PropertySheet.CategoryCore
, PropertySheet.DublinCore
, PropertySheet.Version
, PropertySheet.Reference
, PropertySheet.Document
, PropertySheet.TextDocument
, PropertySheet.Url
, PropertySheet.ExternalDocument
)
def _findTopObject(self):
'''
find the top object from which the spidering begun
we search upwards untill we find or reach portal object
the top object is the one that is maintaining the dictionary
I think we have to do it instead of using simple acquisition
because we have to find a non-empty one
'''
ob=self
if hasattr(self,'urldict') and len(self.urldict)>0:
return self
else:
while 1:
ob=ob.getParentValue()
if ob==self.getPortalObject():
return self
if hasattr(ob,'urldict') and len(ob.urldict)>0:
return ob
security.declareProtected(Permissions.ModifyPortalContent,'addUrl')
def addUrl(self,url):
'''
record url that has already been spidered
'''
self.urldict[url]=1
self._p_changed=1
security.declareProtected(Permissions.ModifyPortalContent,'checkUrl')
def checkUrl(self,url):
'''
check if the url has already been spidered
'''
return self.urldict.has_key(url)
security.declareProtected(Permissions.ModifyPortalContent,'resetTopObject')
def resetTopObject(self):
'''
reset the url dictionary
remember do it before you start recursive spidering
'''
self.urldict={}
self._p_changed=1
def _processData(self,s, inf):
# since this is a web page, we don't want anything else
# XXX we should find another way - like this, we end up with empty draft objects
if (inf.getmaintype(),inf.getsubtype())!=('text','html'):
raise SpiderException(100,'this is %s/%s' % (inf.getmaintype(),inf.getsubtype()))
top=self._findTopObject()
# remove current subobjects
self.manage_delObjects([i.getId() for i in self.searchFolder(portal_type='External Web Page')])
if self.getOptionRecursively()>0 and self.getRecursionDepth()>0:
# first find links in text
rx=re.compile('<a[^>]*href=[\'"](.*?)[\'"]',re.IGNORECASE)
for ref in re.findall(rx, s):
# eliminate anchors and specials, select internal links
if ref.startswith('javascript') or ref.startswith('mailto'):
continue
ref=re.sub('#.*','',ref)
if ref=='':continue
#baseref='/'.join(self.getQualifiedUrl().split('/'))
baseref=self.getQualifiedUrl()
if not ref.startswith('http'):
# complete relative paths
ref=baseref+'/'+ref
# eliminate multiple slashes
rx=re.compile('([^:]{1})\/{2,}')
ref=re.sub(rx,'\1/',ref)
# create subobjects
if ref.startswith(baseref) and not top.checkUrl(ref):
# record my url in top object
top.addUrl(ref)
n=self.newContent(portal_type='External Web Page')
# set coordinates
n.setUrlProtocol('http')
n.setUrlString(ref)
n.setOptionRecursively(1)
n.setRecursionDepth(self.getRecursionDepth()-1)
# copy attributes
for atr in self.portal_types[self.getPortalType()].getInstanceBaseCategoryList():
n.setProperty(atr,self.getProperty(atr))
n.activate(activity='SQLQueue').ExternalDocument_spiderAndSetState()
# process self
# here we check encoding and convert to UTF8
try:
s=recode(s)
except CanNotDecode:
msg = "Spidered on %s, %i chars, but could not decode" % (self._time(), chars)
portal_workflow = getToolByName(self, 'portal_workflow')
portal_workflow.doActionFor(context, 'process', comment=msg)
return False
s=stripHtml(s) # remove headers, doctype and the like
s=clearHtml(s) # remove tags
s=convertEntities(s) # convert charrefs and named entities
return s
# vim: filetype=python syntax=python shiftwidth=2
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