latex2pdf

latex2pdf.py

def latex2pdf(expr:str,
              out_pdf:Filepath,
              font:str='normalsize',
              font_white:bool=False,
              texname:str='latex'
              )->None:
  makedirs('_tex',exist_ok=True)
  tex=f'_tex/{texname}.tex'
  pdf=f'_tex/{texname}.pdf'
  with open(tex, 'w') as f:
    f.write(('\\documentclass{standalone}\n'
            '\\usepackage{varwidth}\n\\usepackage{amsmath}\n'
            '\\usepackage{xcolor}\n' +
            ('\\color[rgb]{0.77,0.77,0.77}\n' if font_white else '') +
            '\\begin{document}\n'
            '\\begin{varwidth}{\\linewidth}\n'
            '\\strut{\\'+font+'{\n$$\n'+expr.strip()+'\n$$\n}}\n'
            '\\end{varwidth}\n\\end{document}'))
  with open('_tex/latex2pnf_stdout_stderr.txt','w') as f:
    ret=call(['pdflatex', f'{texname}.tex'],cwd='_tex', stdout=f, stderr=f)
    assert ret==0, f"pdflatex returned {ret}"
  ret=call(['mv', pdf, out_pdf])
  assert ret==0, f"cp returned {ret}"