mirror of
https://gitlab2.federez.net/re2o/re2o
synced 2024-12-23 15:33:45 +00:00
113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
# coding: utf-8
|
|
# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
|
|
# se veut agnostique au réseau considéré, de manière à être installable en
|
|
# quelques clics.
|
|
#
|
|
# Copyright © 2017 Gabriel Détraz
|
|
# Copyright © 2017 Goulven Kermarec
|
|
# Copyright © 2017 Augustin Lemesle
|
|
#
|
|
# 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.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
"""tex.py
|
|
Module in charge of rendering some LaTex templates.
|
|
Used to generated PDF invoice.
|
|
"""
|
|
|
|
|
|
import tempfile
|
|
from subprocess import Popen, PIPE
|
|
import os
|
|
from datetime import datetime
|
|
|
|
from django.template.loader import get_template
|
|
from django.template import Context
|
|
from django.http import HttpResponse
|
|
from django.conf import settings
|
|
from django.utils.text import slugify
|
|
|
|
|
|
TEMP_PREFIX = getattr(settings, 'TEX_TEMP_PREFIX', 'render_tex-')
|
|
CACHE_PREFIX = getattr(settings, 'TEX_CACHE_PREFIX', 'render-tex')
|
|
CACHE_TIMEOUT = getattr(settings, 'TEX_CACHE_TIMEOUT', 86400) # 1 day
|
|
|
|
|
|
def render_invoice(_request, ctx={}):
|
|
"""
|
|
Render an invoice using some available information such as the current
|
|
date, the user, the articles, the prices, ...
|
|
"""
|
|
filename = '_'.join([
|
|
'invoice',
|
|
slugify(ctx.get('asso_name', "")),
|
|
slugify(ctx.get('recipient_name', "")),
|
|
str(ctx.get('DATE', datetime.now()).year),
|
|
str(ctx.get('DATE', datetime.now()).month),
|
|
str(ctx.get('DATE', datetime.now()).day),
|
|
])
|
|
r = render_tex(_request, 'cotisations/factures.tex', ctx)
|
|
r['Content-Disposition'] = 'attachment; filename="{name}.pdf"'.format(
|
|
name=filename
|
|
)
|
|
return r
|
|
|
|
|
|
def create_pdf(template, ctx={}):
|
|
"""Creates and returns a PDF from a LaTeX template using pdflatex.
|
|
|
|
It create a temporary file for the PDF then read it to return its content.
|
|
|
|
Args:
|
|
template: Path to the LaTeX template.
|
|
ctx: Dict with the context for rendering the template.
|
|
|
|
Returns:
|
|
The content of the temporary PDF file generated.
|
|
"""
|
|
context = Context(ctx)
|
|
template = get_template(template)
|
|
rendered_tpl = template.render(context).encode('utf-8')
|
|
|
|
with tempfile.TemporaryDirectory() as tempdir:
|
|
for _ in range(2):
|
|
process = Popen(
|
|
['pdflatex', '-output-directory', tempdir],
|
|
stdin=PIPE,
|
|
stdout=PIPE,
|
|
)
|
|
process.communicate(rendered_tpl)
|
|
with open(os.path.join(tempdir, 'texput.pdf'), 'rb') as f:
|
|
pdf = f.read()
|
|
|
|
return pdf
|
|
|
|
|
|
def render_tex(_request, template, ctx={}):
|
|
"""Creates a PDF from a LaTex templates using pdflatex.
|
|
|
|
Calls `create_pdf` and send back an HTTP response for
|
|
accessing this file.
|
|
|
|
Args:
|
|
_request: Unused, but allow using this function as a Django view.
|
|
template: Path to the LaTeX template.
|
|
ctx: Dict with the context for rendering the template.
|
|
|
|
Returns:
|
|
An HttpResponse with type `application/pdf` containing the PDF file.
|
|
"""
|
|
pdf = create_pdf(template, ctx)
|
|
r = HttpResponse(content_type='application/pdf')
|
|
r.write(pdf)
|
|
return r
|