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python: have %%dve and %%pml honor SPOT_TMPDIR and TMPDIR

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* python/spot/aux.py (tmpdir): New context manager.
* python/spot/ltsmin.i: Use it for the two magics.
* NEWS: Mention this.
This commit is contained in:
Alexandre Duret-Lutz 2016-07-19 14:23:27 +02:00
parent b136b81c6d
commit e37f62dc75
3 changed files with 54 additions and 39 deletions
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4
NEWS
View file

@ -127,6 +127,10 @@ New in spot 2.0.3a (not yet released)
with spins, and dynamically load them. This is
akin to the %%dve magic that was already supported.
* The %%dve and %%pml magics honor the SPOT_TMPDIR and
TMPDIR environment variables. This especially helps
when the current directory is read-only.
Documentation:
* A new example page shows how to test the equivalence of

11
python/spot/aux.py
View file

@ -26,6 +26,7 @@ import subprocess
import sys
import os
import errno
import contextlib
def extend(*classes):
"""
@ -80,3 +81,13 @@ def rm_f(filename):
except OSError as e:
if e.errno != errno.ENOENT:
raise
@contextlib.contextmanager
def tmpdir():
cwd = os.getcwd()
tmpdir = os.environ.get('SPOT_TMPDIR') or os.environ.get('TMPDIR') or '.'
try:
os.chdir(tmpdir)
yield
finally:
os.chdir(cwd)

78
python/spot/ltsmin.i
View file

@ -149,28 +149,27 @@ try:
def dve(self, line, cell):
if not line:
raise ValueError("missing variable name for %%dve")
# DiViNe prefers when files are in the current directory
# so write cell into local file
with tempfile.NamedTemporaryFile(dir='.', suffix='.dve') as t:
t.write(cell.encode('utf-8'))
t.flush()
with spot.aux.tmpdir():
with tempfile.NamedTemporaryFile(dir='.', suffix='.dve') as t:
t.write(cell.encode('utf-8'))
t.flush()
try:
p = subprocess.Popen(['divine', 'compile',
'--ltsmin', t.name],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
out = p.communicate()
if out[0]:
print(out[0], file=sys.stderr)
ret = p.wait()
if ret:
raise subprocess.CalledProcessError(ret, 'divine')
self.shell.user_ns[line] = load(t.name + '2C')
finally:
spot.aux.rm_f(t.name + '.cpp')
spot.aux.rm_f(t.name + '2C')
try:
p = subprocess.Popen(['divine', 'compile',
'--ltsmin', t.name],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
out = p.communicate()
if out[0]:
print(out[0], file=sys.stderr)
ret = p.wait()
if ret:
raise subprocess.CalledProcessError(ret, 'divine')
self.shell.user_ns[line] = load(t.name + '2C')
finally:
spot.aux.rm_f(t.name + '.cpp')
spot.aux.rm_f(t.name + '2C')
@magics_class
class EditPML(Magics):
@ -179,25 +178,26 @@ try:
def pml(self, line, cell):
if not line:
raise ValueError("missing variable name for %%pml")
with tempfile.NamedTemporaryFile(dir='.', suffix='.pml') as t:
t.write(cell.encode('utf-8'))
t.flush()
with spot.aux.tmpdir():
with tempfile.NamedTemporaryFile(dir='.', suffix='.pml') as t:
t.write(cell.encode('utf-8'))
t.flush()
try:
p = subprocess.Popen(['spins', t.name],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
out = p.communicate()
if out[0]:
print(out[0], file=sys.stderr)
ret = p.wait()
if ret:
raise subprocess.CalledProcessError(ret, 'spins')
self.shell.user_ns[line] = load(t.name + '.spins')
finally:
spot.aux.rm_f(t.name + '.spins.c')
spot.aux.rm_f(t.name + '.spins')
try:
p = subprocess.Popen(['spins', t.name],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
out = p.communicate()
if out[0]:
print(out[0], file=sys.stderr)
ret = p.wait()
if ret:
raise subprocess.CalledProcessError(ret, 'spins')
self.shell.user_ns[line] = load(t.name + '.spins')
finally:
spot.aux.rm_f(t.name + '.spins.c')
spot.aux.rm_f(t.name + '.spins')
ip = get_ipython()
ip.register_magics(EditDVE)