sympytex.py

"""
%%
%% This is file `sympytex.py',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% sympytexpackage.dtx  (with options: `python')
%% 
%% This is a generated file.
%% 
%% Copyright (C) 2009-2014 by Tim Molteno <tim@physics.otago.ac.nz>
%% 
%% 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, see <http://www.gnu.org/licenses/>
%% 
"""
import sys
if __name__ == "__main__":
  print("""This file is part of the SympyTeX package.
It is not meant to be called directly.

This file will be used by Sympy scripts generated from a LaTeX document
using the sympytex package. Keep it somewhere where Sympy and Python can
find it and it will automatically be imported.""")
  sys.exit()
import sympy
from sympy.plotting.plot import plot, Plot
import os
import os.path
import hashlib
import traceback
import subprocess
import shutil
initplot_done = False
dirname       = None
filename      = ""
def ttexprint(exp):
  st = sympy.latex(exp, mode='inline')
  return st.strip('$')
def progress(t,linebreak=True):
  if linebreak:
    print(t)
  else:
    sys.stdout.write(t)
def openout(f):
  global filename
  filename = f
  global _file_
  _file_ = open(f + '.sout.tmp', 'w')
  s = '% This file was *autogenerated* from the file ' + \
        os.path.splitext(filename)[0] + '.sympy.\n'
  _file_.write(s)
  progress('Processing Sympy code for %s.tex...' % filename)
def initplot(f):
  global initplot_done
  if not initplot_done:
    progress('Initializing plots directory')
    global dirname
    dirname = 'sympy-plots-for-' + f + '.tex'
    if os.path.isdir(dirname):
      shutil.rmtree(dirname)
    os.mkdir(dirname)
    initplot_done = True
def inline(counter, s):
  progress('Inline formula %s' % counter)
  _file_.write('\\newlabel{@sympylabel' + str(counter) + '}{{' + \
               ttexprint(s) + '}{}{}{}{}}\n')
def inlineplain(counter, s):
  progress('Inline Plain formula %s' % counter)
  _file_.write('\\newlabel{@sympylabel' + str(counter) + '}{{' + \
               str(s) + '}{}{}{}{}}\n')
def blockbegin():
  progress('Code block begin...', False)
def blockend():
  progress('end')
def plot(counter, p, format='notprovided', epsmagick=False, **kwargs):
  global dirname
  progress('Plot %s' % counter)
  if format == 'notprovided':
    formats = ['eps', 'pdf']
  else:
    formats = [format]
  for fmt in formats:
    plotfilename = os.path.join(dirname, 'plot-%s.%s' % (counter, fmt))
    print('  plotting %s with args %s' % (plotfilename, kwargs))
    if (isinstance(p, Plot)):
      p.save(plotfilename)
    else:
      p.savefig(filename=plotfilename, **kwargs)
    if format != 'notprovided' and epsmagick is True:
      print('Calling Imagemagick to convert plot-%s.%s to EPS' % \
        (counter, format))
      toeps(counter, format)
def toeps(counter, ext):
  global dirname
  subprocess.check_call(['convert',\
    '%s/plot-%s.%s' % (dirname, counter, ext), \
    '%s/plot-%s.eps' % (dirname, counter)])
def goboom(line):
  global filename
  print('\n**** Error in Sympy code on line %s of %s.tex! Traceback\
 follows.' % (line, filename))
  traceback.print_exc()
  print('\n**** Running Sympy on %s.sympy failed! Fix %s.tex and try\
 again.' % (filename, filename))
  os.remove(filename + '.sout.tmp')
  sys.exit(1)
def endofdoc():
  global filename
  sympyf = open(filename + '.sympy', 'r')
  m = hashlib.md5()
  for line in sympyf:
    if line[0:15] != ' sympytex.goboom':
      m.update(line.encode('utf-8'))
  s = '%' + m.hexdigest() + '% md5sum of .sympy file (minus "goboom" \
lines) that produced this\n'
  _file_.write(s)
  _file_.close()
  os.rename(filename + '.sout.tmp', filename + '.sout')
  progress('Sympy processing complete. Run LaTeX on %s.tex again.' %\
           filename)
"""
\endinput
%%
%% End of file `sympytex.py'.
"""