forked from ScoDoc/DocScoDoc
96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
# -*- mode: python -*-
|
|
# -*- coding: utf-8 -*-
|
|
|
|
##############################################################################
|
|
#
|
|
# Gestion scolarite IUT
|
|
#
|
|
# Copyright (c) 1999 - 2021 Emmanuel Viennet. All rights reserved.
|
|
#
|
|
# This program 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.
|
|
#
|
|
# 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 General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
#
|
|
# Emmanuel Viennet emmanuel.viennet@viennet.net
|
|
#
|
|
##############################################################################
|
|
|
|
"""Gestion des images logos (nouveau ScoDoc 9)
|
|
|
|
Les logos sont `logo_header.<ext>` et `logo_footer.<ext>`
|
|
avec `ext` membre de LOGOS_IMAGES_ALLOWED_TYPES (= jpg, png)
|
|
|
|
SCODOC_LOGOS_DIR /opt/scodoc-data/config/logos
|
|
"""
|
|
import imghdr
|
|
import os
|
|
|
|
from flask import abort, current_app
|
|
|
|
from app.scodoc import sco_utils as scu
|
|
|
|
|
|
def get_logo_filename(logo_type: str, scodoc_dept: str) -> str:
|
|
"""return full filename for this logo, or "" if not found
|
|
an existing file with extension.
|
|
logo_type: "header" or "footer"
|
|
scodoc-dept: acronym
|
|
"""
|
|
# Search logos in dept specific dir (/opt/scodoc-data/config/logos/logos_<dept>),
|
|
# then in config dir /opt/scodoc-data/config/logos/
|
|
for image_dir in (
|
|
scu.SCODOC_LOGOS_DIR + "/logos_" + scodoc_dept,
|
|
scu.SCODOC_LOGOS_DIR, # global logos
|
|
):
|
|
for suffix in scu.LOGOS_IMAGES_ALLOWED_TYPES:
|
|
filename = os.path.join(image_dir, f"logo_{logo_type}.{suffix}")
|
|
if os.path.isfile(filename) and os.access(filename, os.R_OK):
|
|
return filename
|
|
|
|
return ""
|
|
|
|
|
|
def guess_image_type(stream) -> str:
|
|
"guess image type from header in stream"
|
|
header = stream.read(512)
|
|
stream.seek(0)
|
|
fmt = imghdr.what(None, header)
|
|
if not fmt:
|
|
return None
|
|
return fmt if fmt != "jpeg" else "jpg"
|
|
|
|
|
|
def _ensure_directory_exists(filename):
|
|
"create enclosing directory if necessary"
|
|
directory = os.path.split(filename)[0]
|
|
if not os.path.exists(directory):
|
|
current_app.logger.info(f"sco_logos creating directory %s", directory)
|
|
os.mkdir(directory)
|
|
|
|
|
|
def store_image(stream, basename):
|
|
img_type = guess_image_type(stream)
|
|
if img_type not in scu.LOGOS_IMAGES_ALLOWED_TYPES:
|
|
abort(400, "type d'image invalide")
|
|
filename = basename + "." + img_type
|
|
_ensure_directory_exists(filename)
|
|
with open(filename, "wb") as f:
|
|
f.write(stream.read())
|
|
current_app.logger.info(f"sco_logos.store_image %s", filename)
|
|
# erase other formats if they exists
|
|
for extension in set(scu.LOGOS_IMAGES_ALLOWED_TYPES) - set([img_type]):
|
|
try:
|
|
os.unlink(basename + "." + extension)
|
|
except IOError:
|
|
pass
|