import os from subprocess import PIPE, run import tempfile from django.template.loader import get_template from django_tex.exceptions import TexError from django.conf import settings DEFAULT_INTERPRETER = 'pdflatex' def run_tex(source): """ Copy the source to temp dict and run latex. """ with tempfile.TemporaryDirectory() as tempdir: filename = os.path.join(tempdir, 'texput.tex') with open(filename, 'x', encoding='utf-8') as f: f.write(source) print(source) latex_interpreter = getattr(settings, 'LATEX_INTERPRETER', DEFAULT_INTERPRETER) latex_command = 'cd "{tempdir}" && {latex_interpreter} -interaction=batchmode {path}'.format(tempdir=tempdir, latex_interpreter=latex_interpreter, path=os.path.basename(filename)) process = run(latex_command, shell=True, stdout=PIPE, stderr=PIPE) try: if process.returncode == 1: with open(os.path.join(tempdir, 'texput.log'), encoding='utf8') as f: log = f.read() raise TexError(log=log, source=source) with open(os.path.join(tempdir, 'texput.pdf'), 'rb') as pdf_file: pdf = pdf_file.read() except FileNotFoundError: if process.stderr: raise Exception(process.stderr.decode('utf-8')) raise return pdf def compile_template_to_pdf(template_name, context): """ Compile the source with :func:`~django_tex.core.render_template_with_context` and :func:`~django_tex.core.run_tex`. """ source = render_template_with_context(template_name, context) return run_tex(source) def render_template_with_context(template_name, context): """ Render the template """ template = get_template(template_name, using='tex') return template.render(context)