c38a3428f3
* wrap/python/cgi/ltl2tgba.in (print_footer, alarm_handler) (reset_alarm): New functions. Kill the script and its children if it runs for too long. (render_dot): Call reset_alarm.
438 lines
14 KiB
Python
438 lines
14 KiB
Python
#!@PYTHON@
|
|
# -*- mode: python; coding: iso-8859-1 -*-
|
|
# Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
|
|
# département Systèmes Répartis Coopératifs (SRC), Université Pierre
|
|
# et Marie Curie.
|
|
#
|
|
# This file is part of Spot, a model checking library.
|
|
#
|
|
# Spot 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.
|
|
#
|
|
# Spot 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 Spot; see the file COPYING. If not, write to the Free
|
|
# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
|
# 02111-1307, USA.
|
|
|
|
import sys
|
|
import os
|
|
import cgi
|
|
import cgitb; cgitb.enable()
|
|
import signal
|
|
|
|
print "Content-Type: text/html"
|
|
print
|
|
|
|
# Redirect stderr to stdout.
|
|
os.close(sys.stderr.fileno())
|
|
os.dup2(sys.stdout.fileno(), sys.stderr.fileno())
|
|
|
|
sys.path.insert(0, '@pythondir@')
|
|
# Directory for temporary files (images and other auxiliary files).
|
|
imgdir = 'spotimg'
|
|
|
|
import spot
|
|
import buddy
|
|
|
|
def print_footer():
|
|
print '<hr>'
|
|
print 'ltl2tgba.py @PACKAGE_VERSION@; Spot', spot.version()
|
|
|
|
# We want the script to kill itself whenever it run for more than 30
|
|
# seconds. `dot' can be very long at drawing huge graphs, and may
|
|
# bring a web server to its knees. Doing so also protects us from any
|
|
# infinite loop in Spot.
|
|
#
|
|
# We use alarm(30) because 30 seconds ought to be enough for everyone.
|
|
# We create a process group for the script and its children (dot).
|
|
# Upon SIGALRM, we kill the whole process group.
|
|
#
|
|
# For all this to work, SIGALRM and SIGTERM must not be blocked.
|
|
# Apache (at least in my tests with version 2.0.48) blocks them by
|
|
# default. I haven't figured a Python way to unblock them, so the
|
|
# spot bindings supply unblock_signal(signum) for this purpose.
|
|
|
|
def alarm_handler(signum, frame):
|
|
print """<p><font color="red">The script was aborted because
|
|
it has been running for too long.</font> Please try a shorter formula,
|
|
or different options (not drawing automata usually helps).
|
|
If you want to benchmark big formulae it is
|
|
better to install Spot on your own computer.</p>"""
|
|
print_footer()
|
|
sys.stdout.flush()
|
|
os.kill(0, signal.SIGTERM)
|
|
|
|
def reset_alarm():
|
|
signal.alarm(30)
|
|
|
|
spot.unblock_signal(signal.SIGALRM)
|
|
spot.unblock_signal(signal.SIGTERM)
|
|
os.setpgrp()
|
|
signal.signal(signal.SIGALRM, alarm_handler)
|
|
reset_alarm()
|
|
|
|
|
|
# Cleanup stale files from our image directory.
|
|
os.system('find ' + imgdir + ' -type f -amin +10 -print | xargs rm -f')
|
|
|
|
myself = os.environ['SCRIPT_NAME'];
|
|
form = cgi.FieldStorage()
|
|
filled = form.has_key('formula')
|
|
# FIXME: This assumes Apache.
|
|
uid = os.environ['UNIQUE_ID'];
|
|
imgprefix = imgdir + '/' + uid
|
|
|
|
def escaped_print_dot(dict, what):
|
|
print '<pre>'; sys.stdout.flush()
|
|
s = spot.ostringstream()
|
|
spot.bdd_print_dot(s, dict, what)
|
|
print cgi.escape(s.str())
|
|
del s
|
|
print '</pre>'; sys.stdout.flush()
|
|
|
|
def escaped_print_set(dict, what):
|
|
print '<pre>'; sys.stdout.flush()
|
|
s = spot.ostringstream()
|
|
spot.bdd_print_set(s, dict, what)
|
|
print cgi.escape(s.str())
|
|
del s
|
|
print '</pre>'; sys.stdout.flush()
|
|
|
|
def print_stats(automaton):
|
|
stats = spot.stats_reachable(automaton)
|
|
print "<p>", stats.states,
|
|
if stats.states <= 1:
|
|
print " state,",
|
|
else:
|
|
print " states,",
|
|
print stats.transitions,
|
|
if stats.transitions <= 1:
|
|
print " transition,",
|
|
else:
|
|
print " transitions,",
|
|
# compute the number of acceptance conditions
|
|
acc = all = automaton.all_acceptance_conditions()
|
|
count = 0
|
|
while all != buddy.bddfalse:
|
|
all -= buddy.bdd_satone(all)
|
|
count += 1
|
|
if count > 0:
|
|
print count,
|
|
if count <= 1:
|
|
print "acceptance condition:",
|
|
else:
|
|
print "acceptance conditions:",
|
|
sys.stdout.flush()
|
|
spot.bdd_print_accset(spot.get_cout(), automaton.get_dict(), acc)
|
|
else:
|
|
print "no acceptance condition (all cycles are accepting)"
|
|
print "</p>"
|
|
sys.stdout.flush()
|
|
|
|
def render_dot(basename):
|
|
os.spawnlp(os.P_WAIT, 'dot', 'dot', '-Tpng', '-Gsize=14,14', '-o',
|
|
basename + '.png', basename + '.dot')
|
|
reset_alarm()
|
|
print '<img src="' + basename + '.png">'
|
|
|
|
def render_automaton(basename, automata):
|
|
outfile = spot.ofstream(basename + '.dot')
|
|
spot.dotty_reachable(outfile, automata)
|
|
del outfile
|
|
render_dot(basename)
|
|
|
|
def render_bdd(basename, dictionary, bdd):
|
|
outfile = spot.ofstream(basename + '.dot')
|
|
spot.bdd_print_dot(outfile, dictionary, bdd)
|
|
del outfile
|
|
render_dot(basename)
|
|
|
|
|
|
print "<TITLE>LTL-to-Büchi test</TITLE>"
|
|
print """<H1><a href="http://spot.lip6.fr/">Spot</a>'s on-line
|
|
LTL-to-Büchi translator</H1>"""
|
|
|
|
formula = form.getfirst('formula', '')
|
|
|
|
options = [
|
|
('show_parse', 'show traces during parsing', 0),
|
|
('show_formula_dot', 'print the formula as .dot', 0),
|
|
('show_formula_gif', 'draw the formula', 0),
|
|
('show_automaton_dot', 'print Büchi automaton as .dot', 0),
|
|
('show_automaton_gif', 'draw Büchi automaton', 1),
|
|
('show_degen_dot', 'print degeneralized Büchi automaton as .dot', 0),
|
|
('show_degen_gif', 'draw degeneralized Büchi automaton', 0),
|
|
('show_dictionnay', 'print BDD dictionary', 0),
|
|
('show_relation_dot',
|
|
'print the transition relation as .dot (LaCIM only)', 0),
|
|
('show_relation_set',
|
|
'print the transition relation as a BDD set (LaCIM only)', 0),
|
|
('show_relation_gif',
|
|
'draw the transition relation (LaCIM only)', 0),
|
|
('show_acceptance_dot',
|
|
'print the acceptance relation as .dot (LaCIM only)' , 0),
|
|
('show_acceptance_set',
|
|
'print the acceptance relation as a BDD set (LaCIM only)', 0),
|
|
('show_acceptance_gif',
|
|
'draw the acceptance relation (LaCIM only)', 0),
|
|
('show_lbtt', 'convert automaton for LBTT', 0),
|
|
]
|
|
|
|
default_translator = 'trans_fm';
|
|
translators = [
|
|
('trans_fm', 'Convreur/FM'),
|
|
('trans_lacim', 'Convreur/LaCIM'),
|
|
]
|
|
|
|
print """<FORM action="%s" method="post"><P>
|
|
Formula to translate:
|
|
<INPUT size=50 type="text" name="formula" value="%s"><BR>
|
|
|
|
<p>Use alphanumeric identifiers or double-quoted strings for atomic
|
|
propositions, and parentheses for grouping.<BR>Identifiers cannot
|
|
start with the letter of a prefix operator (<code>F</code>,
|
|
<code>G</code>, or <code>X</code>): for instance <code>GFa</code>
|
|
means <code>G(F(a))</code>. Use <code>"GFa"</code> if you really want
|
|
to refer to <code>GFa</code> as a proposition.<br>Conversly, infix
|
|
letter operators are not assumed to be operators if they are part of
|
|
an indentifier: <code>aUb</code> is an atomic proposition, unlike
|
|
<code>a U b</code> and <code>(a)U(b)</code><br>
|
|
|
|
<table border="1"><tr><td>
|
|
<table border="0" rules="groups" frame="void" cellpadding="3" cellspacing=0>
|
|
<colgroup span=2>
|
|
<colgroup span=2>
|
|
<colgroup span=2>
|
|
<colgroup span=2>
|
|
<thead>
|
|
<tr>
|
|
<th colspan=2>Unary operators<br>(prefix)</th>
|
|
<th colspan=4>Binary operators<br>(infix)</th>
|
|
<th colspan=2>Constants</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td align="right">not:</td><td><code>!</code></td>
|
|
<td align="right">and:</td><td><code>&</code> <code>&&</code>
|
|
<code>.</code> <code>*</code>
|
|
<code>/\</code></td>
|
|
<td align="right">xor:</td><td><code>^</code> <code>xor</code></td>
|
|
<td align="right">true:</td><td><code>1</code>
|
|
<code>true</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td align="right">eventually:</td><td><code>F</code>
|
|
<code><></code></td>
|
|
<td align="right">or:</td><td><code>|</code> <code>||</code>
|
|
<code>+</code> <code>\/</code></td>
|
|
|
|
<td align="right">until:</td><td><code>U</code></td>
|
|
<td align="right">false:</td><td><code>0</code>
|
|
<code>false</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td align="right">always:</td><td><code>G</code>
|
|
<code>[]</code></td>
|
|
<td align="right">implies:</td><td><code>-></code>
|
|
<code>=></code></td>
|
|
<td align="right">release:</td><td><code>R</code>
|
|
<code>V</code></td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
<tr>
|
|
<td align="right">next:</td><td><code>X</code> <code>()</code></td>
|
|
<td align="right">equivalent:</td><td><code><-></code>
|
|
<code><=></code></td>
|
|
<td></td><td></td>
|
|
<td></td><td></td>
|
|
</tr>
|
|
|
|
</tbody>
|
|
</table></td></tr></table></p>
|
|
Translator:<TABLE><TR><TD>""" % (myself, cgi.escape(formula, True))
|
|
|
|
|
|
trans = form.getfirst("trans", default_translator)
|
|
for opt, desc, in translators:
|
|
if trans == opt:
|
|
str = "checked"
|
|
else:
|
|
str = ""
|
|
globals()[opt] = str
|
|
print '<INPUT type="radio" name="trans" value="%s" %s>%s<br>' % (opt, str,
|
|
desc)
|
|
|
|
print """</TD></TR></TABLE>
|
|
Options:<TABLE><TR><TD>"""
|
|
|
|
for opt, desc, arg, in options:
|
|
if formula:
|
|
val = int(form.getfirst(opt, 0))
|
|
else:
|
|
val = arg
|
|
if val:
|
|
str = "checked"
|
|
else:
|
|
str = ""
|
|
globals()[opt] = val
|
|
print '<INPUT type="checkbox" name="%s" value="1" %s>%s<br>' % (opt, str,
|
|
desc)
|
|
print '</TD></TR></TABLE><INPUT type="submit" value="Send"></FORM>'
|
|
|
|
if not filled:
|
|
sys.exit(0)
|
|
|
|
reset_alarm()
|
|
|
|
print "<hr><H1>Output</H1>"
|
|
|
|
env = spot.default_environment.instance()
|
|
|
|
print "<H2>LTL Formula</H2>"
|
|
|
|
if show_parse: print '<pre>'
|
|
sys.stdout.flush()
|
|
sys.stderr.flush()
|
|
|
|
pel = spot.empty_parse_error_list()
|
|
f = spot.parse(formula, pel, env, show_parse)
|
|
if show_parse: print '</pre>'
|
|
|
|
print '<font color="red"><pre>'
|
|
err = spot.format_parse_errors(spot.get_cout(), formula, pel)
|
|
print '</pre></font>'
|
|
|
|
if not f:
|
|
print '<p><b>Aborting...</b></p>'
|
|
sys.exit(0)
|
|
if err:
|
|
print '<p><b>Continuing anyway...</b></p>'
|
|
|
|
print "<p>Formula is<code>", f, "</code></p>"
|
|
|
|
if show_formula_dot:
|
|
print '<pre>'; sys.stdout.flush()
|
|
s = spot.ostringstream()
|
|
spot.dotty(s, f)
|
|
print cgi.escape(s.str())
|
|
del s
|
|
print '</pre>'; sys.stdout.flush()
|
|
if show_formula_gif:
|
|
outfile = spot.ofstream(imgprefix + '-f.dot')
|
|
spot.dotty(outfile, f)
|
|
del outfile
|
|
os.spawnlp(os.P_WAIT, 'dot', 'dot', '-Tgif', '-Gsize=14,14', '-o',
|
|
imgprefix + '-f.gif', imgprefix + '-f.dot')
|
|
os.spawnlp(os.P_WAIT, 'convert', 'convert',
|
|
imgprefix + '-f.gif', imgprefix + '-f.png')
|
|
print '<img src="' + imgprefix + '-f.png">'
|
|
|
|
|
|
print '<H2>Automaton</H2>'
|
|
|
|
dict = spot.bdd_dict()
|
|
|
|
print '<p>Building automaton...',
|
|
sys.stdout.flush()
|
|
|
|
if trans_lacim:
|
|
automaton = spot.ltl_to_tgba_lacim(f, dict)
|
|
elif trans_fm:
|
|
automaton = spot.ltl_to_tgba_fm(f, dict)
|
|
|
|
print 'done.</p>'
|
|
sys.stdout.flush()
|
|
|
|
print_stats(automaton)
|
|
|
|
if show_automaton_dot:
|
|
print '<pre>'; sys.stdout.flush()
|
|
s = spot.ostringstream()
|
|
spot.dotty_reachable(s, automaton)
|
|
print cgi.escape(s.str())
|
|
del s
|
|
print '</pre>'; sys.stdout.flush()
|
|
|
|
if show_automaton_gif:
|
|
render_automaton(imgprefix + '-a', automaton)
|
|
|
|
if show_degen_dot or show_degen_gif:
|
|
print '<H3>Degeneralized automaton</H3>'
|
|
degen = spot.tgba_tba_proxy(automaton)
|
|
print_stats(degen)
|
|
if show_degen_dot:
|
|
print '<pre>'; sys.stdout.flush()
|
|
s = spot.ostringstream()
|
|
spot.dotty_reachable(s, degen)
|
|
print cgi.escape(s.str())
|
|
del s
|
|
print '</pre>'; sys.stdout.flush()
|
|
if show_degen_gif:
|
|
render_automaton(imgprefix + '-d', degen)
|
|
else:
|
|
degen = 0
|
|
|
|
if show_dictionnay:
|
|
print '<H3>BDD dictionary</H3>'
|
|
print '<pre>'
|
|
sys.stdout.flush()
|
|
automaton.get_dict().dump(spot.get_cout())
|
|
print '</pre>'
|
|
|
|
if (type(automaton) == spot.tgba_bdd_concretePtr
|
|
and (show_relation_dot or show_relation_set or show_relation_gif)):
|
|
print '<H3>Transition relation</H3>'
|
|
if show_relation_dot:
|
|
escaped_print_dot(automaton.get_dict(),
|
|
automaton.get_core_data().relation)
|
|
if show_relation_set:
|
|
escaped_print_set(automaton.get_dict(),
|
|
automaton.get_core_data().relation)
|
|
if show_relation_gif:
|
|
render_bdd(imgprefix + '-b', automaton.get_dict(),
|
|
automaton.get_core_data().relation)
|
|
|
|
if (type(automaton) == spot.tgba_bdd_concretePtr
|
|
and (show_acceptance_dot or show_acceptance_set or show_acceptance_gif)):
|
|
print '<H3>Acceptance relation</H3>'
|
|
if show_acceptance_dot:
|
|
escaped_print_dot(automaton.get_dict(),
|
|
automaton.get_core_data().acceptance_conditions)
|
|
if show_acceptance_set:
|
|
escaped_print_set(automaton.get_dict(),
|
|
automaton.get_core_data().acceptance_conditions)
|
|
if show_acceptance_gif:
|
|
render_bdd(imgprefix + '-c', automaton.get_dict(),
|
|
automaton.get_core_data().acceptance_conditions)
|
|
|
|
if show_lbtt:
|
|
print '<H3>LBTT conversion</H3>'
|
|
if degen:
|
|
print '<H4>Conversion of the generalized automaton</H4>'
|
|
print '<pre>'
|
|
sys.stdout.flush()
|
|
spot.lbtt_reachable(spot.get_cout(), automaton)
|
|
print '</pre>'
|
|
if degen:
|
|
print '<H4>Conversion of the degeneralized automaton</H4>'
|
|
print '<pre>'
|
|
sys.stdout.flush()
|
|
spot.lbtt_reachable(spot.get_cout(), degen)
|
|
print '</pre>'
|
|
|
|
sys.stdout.flush()
|
|
|
|
spot.destroy(f)
|
|
# Make sure degen is cleared before automaton.
|
|
del degen
|
|
del automaton
|
|
|
|
print_footer()
|