1 # GNU MediaGoblin -- federated, autonomous media hosting
2 # Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
4 # This program is free software: you can redistribute it and/or modify
5 # it under the terms of the GNU Affero General Public License as published by
6 # the Free Software Foundation, either version 3 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU Affero General Public License for more details.
14 # You should have received a copy of the GNU Affero General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
21 from mediagoblin
import mg_globals
as mgg
22 from mediagoblin
.processing
import create_pub_filepath
23 from mediagoblin
.media_types
.ascii
import asciitoimage
25 _log
= logging
.getLogger(__name__
)
27 SUPPORTED_EXTENSIONS
= ['txt', 'asc', 'nfo']
30 def sniff_handler(media_file
, **kw
):
31 if kw
.get('media') is not None:
32 name
, ext
= os
.path
.splitext(kw
['media'].filename
)
33 clean_ext
= ext
[1:].lower()
35 if clean_ext
in SUPPORTED_EXTENSIONS
:
41 def process_ascii(proc_state
):
42 """Code to process a txt file. Will be run by celery.
44 A Workbench() represents a local tempory dir. It is automatically
45 cleaned up when this function exits.
47 entry
= proc_state
.entry
48 workbench
= proc_state
.workbench
49 ascii_config
= mgg
.global_config
['media_type:mediagoblin.media_types.ascii']
50 # Conversions subdirectory to avoid collisions
51 conversions_subdir
= os
.path
.join(
52 workbench
.dir, 'conversions')
53 os
.mkdir(conversions_subdir
)
55 queued_filepath
= entry
.queued_media_file
56 queued_filename
= workbench
.localized_file(
57 mgg
.queue_store
, queued_filepath
,
60 queued_file
= file(queued_filename
, 'rb')
63 queued_file_charset
= chardet
.detect(queued_file
.read())
65 # Only select a non-utf-8 charset if chardet is *really* sure
66 # Tested with "Feli\x0109an superjaron", which was detecte
67 if queued_file_charset
['confidence'] < 0.9:
68 interpreted_charset
= 'utf-8'
70 interpreted_charset
= queued_file_charset
['encoding']
72 _log
.info('Charset detected: {0}\nWill interpret as: {1}'.format(
76 queued_file
.seek(0) # Rewind the queued file
78 thumb_filepath
= create_pub_filepath(
79 entry
, 'thumbnail.png')
81 tmp_thumb_filename
= os
.path
.join(
82 conversions_subdir
, thumb_filepath
[-1])
84 ascii_converter_args
= {}
86 if ascii_config
['thumbnail_font']:
87 ascii_converter_args
.update(
88 {'font': ascii_config
['thumbnail_font']})
90 converter
= asciitoimage
.AsciiToImage(
91 **ascii_converter_args
)
93 thumb
= converter
._create
_image
(
96 with
file(tmp_thumb_filename
, 'w') as thumb_file
:
98 (mgg
.global_config
['media:thumb']['max_width'],
99 mgg
.global_config
['media:thumb']['max_height']),
101 thumb
.save(thumb_file
)
103 _log
.debug('Copying local file to public storage')
104 mgg
.public_store
.copy_local_to_storage(
105 tmp_thumb_filename
, thumb_filepath
)
109 original_filepath
= create_pub_filepath(entry
, queued_filepath
[-1])
111 with mgg
.public_store
.get_file(original_filepath
, 'wb') \
113 original_file
.write(queued_file
.read())
115 queued_file
.seek(0) # Rewind *again*
117 unicode_filepath
= create_pub_filepath(entry
, 'ascii-portable.txt')
119 with mgg
.public_store
.get_file(unicode_filepath
, 'wb') \
121 # Decode the original file from its detected charset (or UTF8)
122 # Encode the unicode instance to ASCII and replace any non-ASCII
123 # with an HTML entity (&#
125 unicode(queued_file
.read().decode(
126 interpreted_charset
)).encode(
128 'xmlcharrefreplace'))
130 mgg
.queue_store
.delete_file(queued_filepath
)
131 entry
.queued_media_file
= []
132 media_files_dict
= entry
.setdefault('media_files', {})
133 media_files_dict
['thumb'] = thumb_filepath
134 media_files_dict
['unicode'] = unicode_filepath
135 media_files_dict
['original'] = original_filepath