mirror of
https://gitlab.federez.net/re2o/re2o
synced 2024-06-13 14:08:13 +00:00
72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
from django.template.loader import get_template
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from django.template import TemplateDoesNotExist, Context
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from django.http import HttpResponse, Http404, HttpResponseNotModified
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from django.core.cache import cache
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from django.conf import settings
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from django.shortcuts import redirect
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from tempfile import mkdtemp
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import subprocess
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import os
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import shutil
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from hashlib import md5
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TEMP_PREFIX = getattr(settings, 'TEX_TEMP_PREFIX', 'render_tex-')
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CACHE_PREFIX = getattr(settings, 'TEX_CACHE_PREFIX', 'render-tex')
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CACHE_TIMEOUT = getattr(settings, 'TEX_CACHE_TIMEOUT', 86400) # 1 day
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def render_tex(request, template, ctx={}):
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doc = template.rsplit('/', 1)[-1].rsplit('.', 1)[0]
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# Utile ? Parfois il faut le chemin absolu pour retrouver les images
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#ctx.setdefault('tpl_path', os.path.join(settings.BASE_DIR, 'factures/templates/factures'))
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try:
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body = get_template(template).render(Context(ctx)).encode('utf-8')
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except TemplateDoesNotExist:
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raise Http404()
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etag = md5(body).hexdigest()
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if request.META.get('HTTP_IF_NONE_MATCH', '') == etag:
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return HttpResponseNotModified()
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cache_key = "%s:%s:%s" % (CACHE_PREFIX, template, etag)
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pdf = cache.get(cache_key)
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if pdf is None:
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if b'\\nonstopmode' not in body:
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raise ValueError("\\nonstopmode not present in document, cowardly refusing to process.")
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tmp = mkdtemp(prefix=TEMP_PREFIX)
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try:
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with open("%s/%s.tex" % (tmp, doc), "w") as f:
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f.write(str(body))
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del body
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error = subprocess.Popen(
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["pdflatex", "%s.tex" % doc],
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cwd=tmp,
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stdin=open(os.devnull, "r"),
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stderr=open(os.devnull, "wb"),
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stdout=open(os.devnull, "wb")
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).wait()
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if error:
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log = open("%s/%s.log" % (tmp, doc)).read()
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return HttpResponse(log, content_type="text/plain")
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pdf = open("%s/%s.pdf" % (tmp, doc)).read()
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finally:
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shutil.rmtree(tmp)
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pass
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if pdf:
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cache.set(cache_key, pdf, CACHE_TIMEOUT)
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res = HttpResponse(pdf, content_type="application/pdf")
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res['ETag'] = etag
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return res
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