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annotate src/cagou/plugins/plugin_upload_android_gallery.py @ 88:3dc526bb4a5a

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upload: plugin android gallery, first draft: - added "external" key in PLUGIN_INFO which indicate that a plugin doesn't create a widget when set to True - callback and cancel_cb method in UploadMenu now use a cleaning_cb arguments which can be None. If set, the callback will be called without argument once the file is uploaded - the AndroidGallery plugin looks for images on Android, then save the content to a temporary file an upload it, then clean the file. This plugin is only active on android platform.
author Goffi <goffi@goffi.org>
date Sun, 25 Dec 2016 22:53:50 +0100
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client
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5 # Copyright (C) 2016 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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21 from sat.core import log as logging
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22 log = logging.getLogger(__name__)
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23 from sat.core.i18n import _
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24 import sys
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25 import tempfile
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26 import os
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27 import os.path
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28 if sys.platform=="android":
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29 from jnius import autoclass
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30 from android import activity, mActivity
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31
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32 Intent = autoclass('android.content.Intent')
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33 OpenableColumns = autoclass('android.provider.OpenableColumns')
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34 PHOTO_GALLERY = 1
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35 RESULT_OK = -1
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36
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38
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39 PLUGIN_INFO = {
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40 "name": _(u"photo"),
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41 "main": "AndroidGallery",
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42 "platforms": ('android',),
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43 "external": True,
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44 "description": _(u"upload a photo from photo gallery"),
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45 }
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48 class AndroidGallery(object):
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49
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50 def __init__(self, callback, cancel_cb):
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51 self.callback = callback
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52 self.cancel_cb = cancel_cb
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53 activity.bind(on_activity_result=self.on_activity_result)
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54 intent = Intent()
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55 intent.setType('image/*')
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56 intent.setAction(Intent.ACTION_GET_CONTENT)
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57 mActivity.startActivityForResult(intent, PHOTO_GALLERY);
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58
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59 def on_activity_result(self, requestCode, resultCode, data):
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60 # TODO: move file dump to a thread or use async callbacks during file writting
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61 if requestCode == PHOTO_GALLERY and resultCode == RESULT_OK:
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62 if data is None:
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63 log.warning(u"No data found in activity result")
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64 self.cancel_cb(self, None)
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65 return
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66 uri = data.getData()
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67
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68 # we get filename in the way explained at https://developer.android.com/training/secure-file-sharing/retrieve-info.html
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69 cursor = mActivity.getContentResolver().query(uri, None, None, None, None )
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70 name_idx = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
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71 cursor.moveToFirst()
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72 filename = cursor.getString(name_idx)
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73
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74 # we save data in a temporary file that we send to callback
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75 # the file will be removed once upload is done (or if an error happens)
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76 input_stream = mActivity.getContentResolver().openInputStream(uri)
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77 tmp_dir = tempfile.mkdtemp()
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78 tmp_file = os.path.join(tmp_dir, filename)
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79 def cleaning():
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80 os.unlink(tmp_file)
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81 os.rmdir(tmp_dir)
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82 log.debug(u'temporary file cleaned')
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83 buff = bytearray(4096)
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84 with open(tmp_file, 'wb') as f:
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85 while True:
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86 ret = input_stream.read(buff, 0, 4096)
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87 if ret != -1:
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88 f.write(buff)
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89 else:
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90 break
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91 input_stream.close()
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92 self.callback(tmp_file, cleaning)
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93 else:
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94 self.cancel_cb(self, None)