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websubmit.py
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websubmit.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2011, 2012 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.
"""
This is an example for a WebSubmit element to upload videos to Invenio,
using BibEncode to generate preview images.
Requirements:
Server side:
Fully enabled BibEncode module (Codecs, FFmpeg, Mediainfo ...)
Uploadify JQuery Plugin
js/jquery.min.js
js/jquery.uploadify.min.js
js/swfobject.js
"""
import os
import pkg_resources
from invenio.modules.encoder.config import (
CFG_BIBENCODE_WEBSUBMIT_ASPECT_SAMPLE_DIR,
CFG_BIBENCODE_WEBSUBMIT_ASPECT_SAMPLE_FNAME
)
from invenio.config import CFG_SITE_URL, CFG_PYLIBDIR
def gcd(a,b):
""" the euclidean algorithm """
while a:
a, b = b%a, a
return b
def get_session_id(req, uid, user_info):
"""
Returns by all means the current session id of the user.
Raises ValueError if cannot be found
"""
# Get the session id
## This can be later simplified once user_info object contain 'sid' key
session_id = None
try:
try:
from flask import session
session_id = session.sid
except AttributeError as e:
# req was maybe not available (for eg. when this is run
# through Create_Modify_Interface.py)
session_id = user_info['session']
except Exception as e:
raise ValueError("Cannot retrieve user session")
return session_id
def websubmit_singlepage(curdir, doctype, uid, access, session_id):
""" Creates a single websubmit response element for the submission
prototype
"""
external_js_path = pkg_resources.resource_filename('invenio.modules.encoder', 'websubmit.js')
external_js_fh = open(external_js_path)
external_js = external_js_fh.read()
external_js_fh.close()
indir = 'running'
## Check if we can continue the submission because a video has allready been uploaded
## And a response was given by the upload handler in websubmit
if (os.path.exists(os.path.join(curdir, 'files', str(uid), 'response', 'response'))):
## We need to check if the temporary video is still there or has been
## eaten by the garbage collector
file_storing_path = os.path.join(curdir, "files", str(uid), "NewFile", 'filepath')
try:
fp = open(file_storing_path)
fullpath = fp.read()
fp.close()
if os.path.exists(fullpath):
resume = "true"
else:
resume = "false"
except:
resume = "false"
else:
resume = "false"
body = form_body() % {
'CFG_SITE_URL' : CFG_SITE_URL,
'guidelines_url': "localhost"
}
javascript = form_javascript() % {
'CFG_SITE_URL' : CFG_SITE_URL,
'indir': indir,
'doctype': doctype,
'access': access,
'key': CFG_BIBENCODE_WEBSUBMIT_ASPECT_SAMPLE_DIR,
'uid': uid,
'session_id': session_id,
'resume': resume,
'external_js': external_js
}
return body + javascript
def form_body():
return """
<link rel="stylesheet" href="%(CFG_SITE_URL)s/vendors/uploadify/uploadify.css" type="text/css" />
<div class="websubmit_demovid_form">
<label for="DEMOVID_TITLE">Title: </label>
<input type="text" name="DEMOVID_TITLE" id="DEMOVID_TITLE" size="64" maxlength="50"/>
<label for="DEMOVID_YEAR">Year: </label>
<input type="text" name="DEMOVID_YEAR" id="DEMOVID_YEAR" size="4" maxlength="4"/>
<label for="DEMOVID_AU">Author(s), one per line: </label>
<textarea name="DEMOVID_AU" id="DEMOVID_AU" rows="5" cols="64"></textarea>
<label for="DEMOVID_DESCR">Description: </label>
<textarea name="DEMOVID_DESCR" id="DEMOVID_DESCR" rows="5" cols="64"></textarea>
<div id="websubmit_demovid_preview" style="display: none">
Video Preview: <br />
<div id="websubmit_demovid_samples_wrapper">
<div id="websubmit_demovid_samples">
<!-- SAMPLE FRAMES TO BE INSERTED HERE -->
</div>
</div>
<label for="Aspect">Aspect Ratio: </label>
<div class="websubmit_demovid_radio">
<input type="radio" name="Aspect" value="16:9" id="Aspect16_9" checked="checked" />
<label for="Aspect16_9">16:9</label>
</div>
<div class="websubmit_demovid_radio">
<input type="radio" name="Aspect" value="4:3" id="Aspect4_3" />
<label for="Aspect4_3">4:3</label>
</div>
<div class="websubmit_demovid_radio">
<input type="radio" name="Aspect" value="Other" id="AspectOther" />
<label for="AspectOther">Custom</label>
<div id="custom_aspect_input" style="display: inline">
<input type="text" id="AspectX" name="AspectX" size="2" value="" /> to
<input type="text" id="AspectY" name="AspectY" size="2" value="" />
</div>
</div>
<input name="DEMOVID_ASPECT" id="DEMOVID_ASPECT" type="hidden" value="">
</div>
<div id="websubmit_demovid_error" style="display: none">
Your video could not be processed.
The file might be corrupted or its codec(s) might not be supported by Invenio.
Please verify your video or see the <a href="%(guidelines_url)s">video submission guidelines</a>.
</div>
<div>
<div id="uploadify_loading"><img src="%(CFG_SITE_URL)s/img/loading.gif"/></div>
<input type="file" size="40" id="uploadFile" name="DEMOVID_FILE"/>
</div>
</div>
"""
def form_javascript():
return """
<script type="text/javascript" src="%(CFG_SITE_URL)s/vendors/jquery/dist/jquery.min.js"></script>
<script type="text/javascript" src="%(CFG_SITE_URL)s/vendors/uploadify/jquery.uploadify.min.js"></script>
<script type="text/javascript" src="%(CFG_SITE_URL)s/vendors/swfobject/swfobject/swfobject.js"></script>
<script type="text/javascript">
var global_resume = %(resume)s;
var global_site_url = "%(CFG_SITE_URL)s";
var global_indir = "%(indir)s";
var global_doctype = "%(doctype)s";
var global_access = "%(access)s";
var global_uid = "%(uid)s";
var global_session_id = "%(session_id)s";
var global_key = "%(key)s";
%(external_js)s
</script>
"""

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