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views.py
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Thu, Aug 8, 16:27
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R3600 invenio-infoscience
views.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2012, 2013, 2014, 2015 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.
"""Implementation of Blueprint for previewers."""
import
itertools
from
flask
import
Blueprint
,
request
,
current_app
from
flask_breadcrumbs
import
default_breadcrumb_root
from
invenio.base.globals
import
cfg
from
invenio.config
import
CFG_SITE_RECORD
from
invenio.modules.records.views
import
request_record
from
.registry
import
previewers
from
.utils
import
get_record_documents
,
get_record_files
blueprint
=
Blueprint
(
'previewer'
,
__name__
,
url_prefix
=
"/"
+
CFG_SITE_RECORD
,
static_url_path
=
'/record'
,
template_folder
=
'templates'
,
static_folder
=
'static'
)
default_breadcrumb_root
(
blueprint
,
'.'
)
@blueprint.route
(
'/<int:recid>/preview'
,
methods
=
[
'GET'
,
'POST'
])
@request_record
def
preview
(
recid
):
"""Preview file for given record."""
filename
=
request
.
args
.
get
(
'filename'
,
type
=
str
)
for
f
in
itertools
.
chain
(
get_record_documents
(
recid
,
filename
),
get_record_files
(
recid
,
filename
)):
if
f
.
name
+
f
.
superformat
==
filename
or
filename
is
None
:
ordered
=
previewers
.
keys
()
if
"CFG_PREVIEW_PREFERENCE"
in
cfg
and
\
f
.
superformat
in
cfg
[
"CFG_PREVIEW_PREFERENCE"
]:
from
collections
import
OrderedDict
ordered
=
OrderedDict
.
fromkeys
(
cfg
[
"CFG_PREVIEW_PREFERENCE"
][
f
.
superformat
]
+
ordered
)
.
keys
()
try
:
for
plugin_id
in
ordered
:
if
previewers
[
plugin_id
][
'can_preview'
](
f
):
return
previewers
[
plugin_id
][
'preview'
](
f
)
except
Exception
:
current_app
.
logger
.
exception
(
"Preview plugin {0} failed "
"previewing {1} in record {2}"
.
format
(
plugin_id
,
filename
,
recid
)
)
return
previewers
[
'default'
][
'preview'
](
None
)
@blueprint.route
(
'/<int:recid>/preview/pdfmaxpage'
,
methods
=
[
'GET'
,
'POST'
])
@request_record
def
get_pdf_maxpage
(
recid
):
"""Get maximal page from pdf."""
from
invenio.legacy.bibdocfile.api
import
BibRecDocs
from
.previewerext.pdftk
import
maxpage
return
maxpage
(
BibRecDocs
(
recid
)
.
list_latest_files
(
list_hidden
=
False
)[
0
])
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