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bfe_duration.py
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Created
Sat, Aug 31, 01:27
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text/x-python
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R3600 invenio-infoscience
bfe_duration.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2007, 2008, 2009, 2010, 2011 CERN.
##
## Invenio 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.
##
## Invenio 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 Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""BibFormat element - Display the duration of a media file
"""
__revision__
=
"$Id$"
import
re
re_duration
=
re
.
compile
(
'(\s|\A)(((?P<hours>\d{1,2}):)?(?P<minutes>\d{1,2}):(?P<seconds>\d\d))(\s|\Z)'
)
def
format_element
(
bfo
,
input_units
=
"m"
,
output_format
=
"
%(H)02i
:
%(M)02i
:
%(S)02i
"
):
"""
Display the duration of a media file (300__a).
@param input_units: if field 300__a is digit, expect it to be:
- s: seconds
- m: minutes
- h: hours
If field 300__a is not digit, expect it to contain some variant of HH:MM:SS
@param output_format: how to display the duration. A basic Pythonic string replacement is
done on the input string. You can use the following keys:
- H: The number of hours
- M: The number of minutes
- S: The number of seconds
- H: The total number of hours
- M: The total number of minutes
- S: The total number of seconds
"""
# Get the duration
duration_in_seconds
=
None
duration
=
bfo
.
field
(
'300__a'
)
try
:
int_duration
=
int
(
float
(
duration
))
if
input_units
==
's'
:
duration_in_seconds
=
int_duration
elif
input_units
==
'm'
:
duration_in_seconds
=
int_duration
*
60
elif
input_units
==
'h'
:
duration_in_seconds
=
int_duration
*
3600
except
Exception
,
e
:
pass
if
duration_in_seconds
is
None
:
# Try to find something like HH:MM:SS
match_obj
=
re_duration
.
match
(
duration
)
if
match_obj
:
seconds
=
int
(
match_obj
.
group
(
'seconds'
))
minutes
=
int
(
match_obj
.
group
(
'minutes'
))
hours
=
match_obj
.
group
(
'hours'
)
if
not
hours
:
hours
=
0
else
:
hours
=
int
(
hours
)
duration_in_seconds
=
seconds
+
(
60
*
minutes
)
+
(
360
*
hours
)
# Output the duration
if
duration_in_seconds
:
return
output_format
%
{
'H'
:
duration_in_seconds
/
3600
,
'M'
:
(
duration_in_seconds
/
60
)
%
60
,
'S'
:
duration_in_seconds
%
60
,
'h'
:
duration_in_seconds
/
3600.0
,
# Absolute nb of hours
'm'
:
duration_in_seconds
/
60.0
,
# Absolute nb of minutes
's'
:
duration_in_seconds
#Absolute nb of seconds
}
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