author | Julien Cristau <julien.cristau@logilab.fr> |
Mon, 01 Aug 2011 17:59:48 +0200 | |
branch | stable |
changeset 7723 | badfd5524ab6 |
parent 6911 | 75849076fd6c |
child 7815 | 2a164a9cf81c |
permissions | -rw-r--r-- |
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""Some parsers to detect action to do from text |
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Currently only a parser to look for state change instruction is provided. |
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Take care to security when you're using it, think about the user that |
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will provide the text to analyze... |
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""" |
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__docformat__ = "restructuredtext en" |
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import re |
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from cubicweb import UnknownEid, typed_eid |
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from cubicweb.view import Component |
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class TextAnalyzer(Component): |
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"""analyze and extract information from plain text by calling registered |
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text parsers |
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""" |
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__regid__ = 'textanalyzer' |
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def parse(self, caller, text): |
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for parsercls in self._cw.vreg['components'].get('textparser', ()): |
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parsercls(self._cw).parse(caller, text) |
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class TextParser(Component): |
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"""base class for text parser, responsible to extract some information |
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from plain text. When something is done, it usually call the |
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.fire_event(something, {event args}) |
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method on the caller. |
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""" |
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__regid__ = 'textparser' |
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__abstract__ = True |
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def parse(self, caller, text): |
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raise NotImplementedError |
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class ChangeStateTextParser(TextParser): |
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"""search some text for change state instruction in the form |
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:<transition name>: #?<eid> |
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""" |
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instr_rgx = re.compile(':(\w+):\s*#?(\d+)', re.U) |
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def parse(self, caller, text): |
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for trname, eid in self.instr_rgx.findall(text): |
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try: |
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entity = self._cw.entity_from_eid(typed_eid(eid)) |
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except UnknownEid: |
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self.error("can't get entity with eid %s", eid) |
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continue |
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if not hasattr(entity, 'in_state'): |
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self.error('bad change state instruction for eid %s', eid) |
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continue |
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iworkflowable = entity.cw_adapt_to('IWorkflowable') |
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if iworkflowable.current_workflow: |
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tr = iworkflowable.current_workflow.transition_by_name(trname) |
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else: |
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tr = None |
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if tr and tr.may_be_fired(entity.eid): |
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try: |
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trinfo = iworkflowable.fire_transition(tr) |
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caller.fire_event('state-changed', {'trinfo': trinfo, |
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'entity': entity}) |
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except: |
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self.exception('while changing state of %s', entity) |
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else: |
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self.error("can't pass transition %s on entity %s", |
2e7d399ee075
add textparser object, designed to trigger some actions from textual content such as email or checkin-message (unused in the library itself yet, see email cube)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
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90 |
trname, entity) |