[thecurse] blacklist of latex commands. fixes #2796
This commit is contained in:
parent
c1c30d20de
commit
1114b4c946
|
@ -578,47 +578,69 @@ class ConversationTextview:
|
|||
|
||||
def latex_to_image(self, str):
|
||||
result = None
|
||||
|
||||
exitcode = 0
|
||||
|
||||
# some latex commands are really bad
|
||||
blacklist = ["\\def", "\\let", "\\futurelet",
|
||||
"\\newcommand", "\\renewcomment", "\\else", "\\fi", "\\write",
|
||||
"\\input", "\\include", "\\chardef", "\\catcode", "\\makeatletter",
|
||||
"\\noexpand", "\\toksdef", "\\every", "\\errhelp", "\\errorstopmode",
|
||||
"\\scrollmode", "\\nonstopmode", "\\batchmode", "\\read", "\\csname",
|
||||
"\\newhelp", "\\relax", "\\afterground", "\\afterassignment",
|
||||
"\\expandafter", "\\noexpand", "\\special", "\\command", "\\loop",
|
||||
"\\repeat", "\\toks", "\\output", "\\line", "\\mathcode", "\\name",
|
||||
"\\item", "\\section", "\\mbox", "\\DeclareRobustCommand", "\\[",
|
||||
"\\]"]
|
||||
|
||||
str = str[2:len(str)-2]
|
||||
|
||||
random.seed()
|
||||
tmpfile = os.path.join(gettempdir(), "gajimtex_" + random.randint(0, 100).__str__())
|
||||
|
||||
# build latex string
|
||||
texstr = "\\documentclass[12pt]{article}\\usepackage[dvips]{graphicx}\\usepackage{amsmath}\\usepackage{amssymb}\\pagestyle{empty}"
|
||||
texstr += "\\begin{document}\\begin{large}\\begin{gather*}"
|
||||
texstr += str
|
||||
texstr += "\\end{gather*}\\end{large}\\end{document}"
|
||||
# filter latex code with bad commands
|
||||
for word in blacklist:
|
||||
if word in str:
|
||||
exitcode = 1
|
||||
break
|
||||
|
||||
file = open(os.path.join(tmpfile + ".tex"), "w+")
|
||||
file.write(texstr)
|
||||
file.flush()
|
||||
file.close()
|
||||
if exitcode == 0:
|
||||
random.seed()
|
||||
tmpfile = os.path.join(gettempdir(), "gajimtex_" + random.randint(0,
|
||||
100).__str__())
|
||||
|
||||
p = Popen(['latex', '--interaction=nonstopmode', tmpfile + '.tex'], cwd=gettempdir())
|
||||
exitcode = p.wait()
|
||||
# build latex string
|
||||
texstr = "\\documentclass[12pt]{article}\\usepackage[dvips]{graphicx}\\usepackage{amsmath}\\usepackage{amssymb}\\pagestyle{empty}"
|
||||
texstr += "\\begin{document}\\begin{large}\\begin{gather*}"
|
||||
texstr += str
|
||||
texstr += "\\end{gather*}\\end{large}\\end{document}"
|
||||
|
||||
file = open(os.path.join(tmpfile + ".tex"), "w+")
|
||||
file.write(texstr)
|
||||
file.flush()
|
||||
file.close()
|
||||
|
||||
p = Popen(['latex', '--interaction=nonstopmode', tmpfile + '.tex'],
|
||||
cwd=gettempdir())
|
||||
exitcode = p.wait()
|
||||
|
||||
if exitcode == 0:
|
||||
p = Popen(['dvips', '-E', '-o', tmpfile + '.ps', tmpfile + '.dvi'], cwd=gettempdir())
|
||||
p = Popen(['dvips', '-E', '-o', tmpfile + '.ps', tmpfile + '.dvi'],
|
||||
cwd=gettempdir())
|
||||
exitcode = p.wait()
|
||||
|
||||
if exitcode == 0:
|
||||
p = Popen(['convert', tmpfile + '.ps', tmpfile + '.png'], cwd=gettempdir())
|
||||
exitcode = p.wait()
|
||||
|
||||
p = Popen(['convert', tmpfile + '.ps', tmpfile + '.png'],
|
||||
cwd=gettempdir())
|
||||
exitcode = p.wait()
|
||||
|
||||
extensions = [".tex", ".log", ".aux", ".dvi", ".ps"]
|
||||
|
||||
for ext in extensions:
|
||||
try:
|
||||
os.remove(tmpfile + ext)
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
|
||||
if exitcode == 0:
|
||||
result = tmpfile + '.png'
|
||||
|
||||
return result
|
||||
|
||||
return result
|
||||
|
||||
def print_special_text(self, special_text, other_tags):
|
||||
'''is called by detect_and_print_special_text and prints
|
||||
|
|
Loading…
Reference in New Issue