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#! /usr/bin/env python
#-*- coding: utf-8 -*-
# JARR - A Web based news aggregator.
# Copyright (C) 2010-2016 Cédric Bonhomme - https://www.cedricbonhomme.org
#
# For more information : https://github.com/JARR/JARR
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
__author__ = "Cedric Bonhomme"
__version__ = "$Revision: 0.6 $"
__date__ = "$Date: 2011/10/24 $"
__revision__ = "$Date: 2014/04/12 $"
__copyright__ = "Copyright (c) Cedric Bonhomme"
__license__ = "AGPLv3"
#
# This file contains the export functions of jarr. Indeed
# it is possible to export the database of articles in different formats:
# - simple HTML webzine;
# - text file.
#
import os
import shutil
import time
import tarfile
from datetime import datetime
from flask import jsonify
import conf
from web import models
def HTML_HEADER(title="jarr", css="./style.css"):
return """<!DOCTYPE html>
<html lang="en-US">
<head>
<title>%s</title>
<meta charset="utf-8"/>
<link rel="stylesheet" href="%s" />
</head>
<body>""" % (title, css)
HTML_FOOTER = """<hr />
<p>This archive has been generated with
<a href="https://github.com/JARR/JARR">jarr</a>.
A software under AGPLv3 license.
You are welcome to copy, modify or redistribute the source code according to the
<a href="https://www.gnu.org/licenses/agpl-3.0.txt">AGPLv3</a> license.</p>
</body>
</html>
"""
CSS = """body {
font:normal medium 'Gill Sans','Gill Sans MT',Verdana,sans-serif;
margin:1.20em auto;
width:80%;
line-height:1.75;
}
blockquote {
font-size:small;
line-height:2.153846;
margin:2.153846em 0;
padding:0;font-style:oblique;
border-left:1px dotted;
margin-left:2.153846em;
padding-left:2.153846em;
}
blockquote p{
margin:2.153846em 0;
}
p+br {
display:none;
}
h1 {
font-size:large;
}
h2,h3 {
font-size:medium;
}
hr {
border-style:dotted;
height:1px;
border-width: 1px 0 0 0;
margin:1.45em 0 1.4em;
padding:0;
}
a {
text-decoration:none;
color:#00008B;
}
#footer {
clear:both;
text-align:center;
font-size:small;
}
img {
border:0;
}
.horizontal,.simple li {
margin:0;
padding:0;
list-style:none;
display:inline
}
.simple li:before {
content:"+ ";
}
.simple > li:first-child:before {
content:"";
}
.author {
text-decoration:none;
display:block;
float:right;
margin-left:2em;
font-size:small;
}
.content {
margin:1.00em 1.00em;
}"""
def export_html(user):
"""
Export all articles of 'user' in Web pages.
"""
webzine_root = conf.WEBZINE_ROOT + "/webzine/"
nb_articles = format(len(models.Article.query.filter(models.Article.user_id == user.id).all()), ",d")
index = HTML_HEADER("News archive")
index += "<h1>List of feeds</h1>\n"
index += """<p>%s articles.</p>\n<ul>\n""" % (nb_articles,)
for feed in user.feeds.order_by(models.Feed.title):
# creates a folder for each stream
feed_folder = webzine_root + str(feed.id)
try:
os.makedirs(feed_folder)
except OSError:
# directories already exists (not a problem)
pass
index += """ <li><a href="%s">%s</a></li>\n""" % (feed.id, feed.title)
posts = HTML_HEADER(feed.title, "../style.css")
posts += """<h1>Articles of the feed <a href="%s">%s</a></h1>\n""" % (feed.site_link, feed.title)
posts += """<p>%s articles.</p>\n""" % (format(len(feed.articles.all()), ",d"),)
for article in feed.articles:
post_file_name = os.path.normpath(feed_folder + "/" + str(article.id) + ".html")
feed_index = os.path.normpath(feed_folder + "/index.html")
posts += article.date.ctime() + " - " + """<a href="./%s.html">%s</a>""" % \
(article.id, article.title[:150]) + "<br />\n"
a_post = HTML_HEADER(article.title, "../style.css")
a_post += '<div style="width:60%; overflow:hidden; text-align:justify; margin:0 auto">\n'
a_post += """<h1><a href="%s">%s</a></h1>\n<br />""" % \
(article.link, article.title)
a_post += article.content
a_post += "</div>\n<hr />\n"
a_post += """<br />\n<a href="%s">Complete story</a>\n<br />\n""" % (article.link,)
a_post += HTML_FOOTER
with open(post_file_name, "w") as f:
f.write(a_post)
posts += HTML_FOOTER
if len(feed.articles.all()) != 0:
with open(feed_index, "w") as f:
f.write(posts)
index += "</ul>\n"
index += "<p>" + time.strftime("Generated on %d %b %Y at %H:%M.") + "</p>\n"
index += HTML_FOOTER
with open(webzine_root + "index.html", "w") as f:
f.write(index)
with open(webzine_root + "style.css", "w") as f:
f.write(CSS)
archive_file_name = datetime.now().strftime('%Y-%m-%d') + '.tar.gz'
with tarfile.open(conf.WEBZINE_ROOT + archive_file_name, "w:gz") as tar:
tar.add(webzine_root, arcname=os.path.basename(webzine_root))
shutil.rmtree(webzine_root)
with open(conf.WEBZINE_ROOT + archive_file_name, 'rb') as export_file:
return export_file.read(), archive_file_name
def export_json(user):
"""
Export all articles of 'user' in JSON.
"""
result = []
for feed in user.feeds:
result.append({
"title": feed.title,
"description": feed.description,
"link": feed.link,
"site_link": feed.site_link,
"enabled": feed.enabled,
"created_date": feed.created_date.strftime('%s'),
"articles": [ {
"title": article.title,
"link": article.link,
"content": article.content,
"readed": article.readed,
"like": article.like,
"date": article.date.strftime('%s'),
"retrieved_date": article.retrieved_date.strftime('%s')
}
for article in feed.articles
]
})
return jsonify(result=result)
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