eqtexsvg.py revision 73a0d16664d469d5002cc17c752df3b731ed1245
#!/usr/bin/env python
# -*- coding: cp1252 -*-
"""
EQTEXSVG.py
functions for converting LATEX equation string into SVG path
This extension need, to work properly :
- a TEX/LATEX distribution (MiKTEX ...)
- pstoedit software: <http://www.pstoedit.net/pstoedit>
Copyright (C) 2006 Julien Vitard, julienvitard@gmail.com
- I will try to code XML parsing, not the hard way ;-)
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
import inkex, os, tempfile
def create_equation_tex(filename, equation):
tex = open(filename, 'w')
tex.write("""%% processed with EqTeXSVG.py
\documentclass{article}
\\thispagestyle{empty}
\\begin{document}
""")
tex.write("$$\n")
tex.write(equation)
tex.write("\n$$\n")
tex.write("\end{document}\n")
tex.close()
def svg_open(self,filename):
# parsing of SVG file with the equation
# real parsing XML to use!!!! it will be easier !!!
svg = open(filename, 'r')
svg_lines = svg.readlines()
# trip top/bottom lines from svg file
svg_lines.pop(0)
svg_lines.pop(1)
svg_lines.pop(len(svg_lines)-1)
group = self.document.createElement('svg:g')
self.document.documentElement.appendChild(group)
# deleting "<g... >" "</g>" "<path d=" and "/>" from svg_lines
nodegroup=''
s_nodegroup_path=''
for i in range(1,len(svg_lines)):
if svg_lines[i].find("<g") != -1:
nodegroup=svg_lines[i].split("<g")
nodegroup=nodegroup[1].split(" >")
nodegroup=nodegroup[0]+'\n'
elif svg_lines[i].find("<path d=") != -1:
s_nodegroup_path=svg_lines[i].split("<path d=")
s_nodegroup_path=s_nodegroup_path[1]
elif svg_lines[i].find("/>") != -1:
s_nodegroup_path=s_nodegroup_path+'"\n'
elif svg_lines[i].find("</g>") != -1:
nodegroup_svg = self.document.createElement('svg:g')
nodegroup_svg.setAttribute('style',nodegroup)
nodegroup_path = self.document.createElement('svg:path')
nodegroup_path.setAttribute('d',s_nodegroup_path)
group.appendChild(nodegroup_svg)
nodegroup_svg.appendChild(nodegroup_path)
else:
s_nodegroup_path=s_nodegroup_path+svg_lines[i]
class EQTEXSVG(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.OptionParser.add_option("-f", "--formule",
action="store", type="string",
dest="formule", default=10.0,
help="Formule LaTeX")
def effect(self):
base_file = os.path.join(tempfile.gettempdir(), "inkscape-latex.tmp")
latex_file = base_file + ".tex"
create_equation_tex(latex_file, self.options.formule)
out_file = os.path.join(tempfile.gettempdir(), "inkscape-latex.tmp.output")
os.system('latex -output-directory=' + tempfile.gettempdir() + ' ' + latex_file + '> ' + out_file)
ps_file = base_file + ".ps"
dvi_file = base_file + ".dvi"
svg_file = base_file + ".svg"
os.system('dvips -q -f -E -D 600 -y 5000 -o ' + ps_file + ' ' + dvi_file)
os.system('pstoedit -f svg -dt -ssp ' + ps_file + ' ' + svg_file + '>> ' + out_file)
# ouvrir le svg et remplacer #7F7F7F par #000000
svg_open(self, svg_file)
# clean up
aux_file = base_file + ".aux"
log_file = base_file + ".log"
os.remove(latex_file)
os.remove(aux_file)
os.remove(log_file)
os.remove(dvi_file)
os.remove(ps_file)
os.remove(svg_file)
os.remove(out_file)
e = EQTEXSVG()
e.affect()