annotate sat_frontends/jp/xml_tools.py @ 3254:6cf4bd6972c2

core, frontends: avatar refactoring: /!\ huge commit Avatar logic has been reworked around the IDENTITY plugin: plugins able to handle avatar or other identity related metadata (like nicknames) register to IDENTITY plugin in the same way as for other features like download/upload. Once registered, IDENTITY plugin will call them when suitable in order of priority, and handle caching. Methods to manage those metadata from frontend now use serialised data. For now `avatar` and `nicknames` are handled: - `avatar` is now a dict with `path` + metadata like `media_type`, instead of just a string path - `nicknames` is now a list of nicknames in order of priority. This list is never empty, and `nicknames[0]` should be the preferred nickname to use by frontends in most cases. In addition to contact specified nicknames, user set nickname (the one set in roster) is used in priority when available. Among the side changes done with this commit, there are: - a new `contactGet` bridge method to get roster metadata for a single contact - SatPresenceProtocol.send returns a Deferred to check when it has actually been sent - memory's methods to handle entities data now use `client` as first argument - metadata filter can be specified with `getIdentity` - `getAvatar` and `setAvatar` are now part of the IDENTITY plugin instead of XEP-0054 (and there signature has changed) - `isRoom` and `getBareOrFull` are now part of XEP-0045 plugin - jp avatar/get command uses `xdg-open` first when available for `--show` flag - `--no-cache` has been added to jp avatar/get and identity/get - jp identity/set has been simplified, explicit options (`--nickname` only for now) are used instead of `--field`. `--field` may come back in the future if necessary for extra data. - QuickContactList `SetContact` now handle None as a value, and doesn't use it to delete the metadata anymore - improved cache handling for `metadata` and `nicknames` in quick frontend - new `default` argument in QuickContactList `getCache`
author Goffi <goffi@goffi.org>
date Tue, 14 Apr 2020 21:00:33 +0200
parents 559a625a236b
children be6d91572633
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1 #!/usr/bin/env python3
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2
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4 # jp: a SàT command line tool
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5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat_frontends.jp.constants import Const as C
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22
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23 def etreeParse(cmd, raw_xml, reraise=False):
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24 """Import lxml and parse raw XML
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25
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26 @param cmd(CommandBase): current command instance
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27 @param raw_xml(file, str): an XML bytestring, string or file-like object
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28 @param reraise(bool): if True, re raise exception on parse error instead of doing a
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29 parser.error (which terminate the execution)
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30 @return (tuple(etree.Element, module): parsed element, etree module
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31 """
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32 try:
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33 from lxml import etree
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34 except ImportError:
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35 cmd.disp(
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36 'lxml module must be installed, please install it with "pip install lxml"',
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37 error=True,
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38 )
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39 cmd.host.quit(C.EXIT_ERROR)
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40 try:
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41 if isinstance(raw_xml, str):
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42 parser = etree.XMLParser(remove_blank_text=True)
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43 element = etree.fromstring(raw_xml, parser)
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44 else:
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45 element = etree.parse(raw_xml).getroot()
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46 except Exception as e:
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47 if reraise:
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48 raise e
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49 cmd.parser.error(
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50 _("Can't parse the payload XML in input: {msg}").format(msg=e)
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51 )
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52 return element, etree
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54 def getPayload(cmd, element):
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55 """Retrieve payload element and exit with and error if not found
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56
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57 @param element(etree.Element): root element
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58 @return element(etree.Element): payload element
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59 """
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60 if element.tag in ("item", "{http://jabber.org/protocol/pubsub}item"):
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61 if len(element) > 1:
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62 cmd.disp(_("<item> can only have one child element (the payload)"),
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63 error=True)
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64 cmd.host.quit(C.EXIT_DATA_ERROR)
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65 element = element[0]
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66 return element