def spawnViewer(self, fp):
"""
Spawns the first available image viewer specified in my I{exList}.
"Returns" a C{Deferred} that fires with the PID of the spawned
image viewer process.
"""
for ex in self.exList:
exPath = ex[0]
if os.path.exists(exPath):
self.ivp = self.IV_Protocol()
args = [os.path.basename(exPath)]
for arg in ex[1:]:
if "{}" in arg:
arg = arg.replace("{}", os.path.basename(fp.path))
args.append(arg)
args.append(fp.path)
self.transport = reactor.spawnProcess(self.ivp,
exPath,
args,
env=None)
self.savePID(self.transport.pid)
stderr = yield self.ivp.d
if stderr:
if not self.noComplain:
msg(0, "Error launching '{}':\n{}", args[0], stderr)
else:
break
else:
if not self.noComplain:
msg(0, "No image viewer found")
def tearDown(self):
msg(None)
while self.pendingCalls:
call = list(self.pendingCalls.keys())[0]
if call.active():
self.pendingCalls[call].callback(None)
call.cancel()
msg(None)
def __init__(self, *args, **kw):
if getattr(self, 'verbose', False) or globals().get('VERBOSE', False):
msg(True)
self.pendingCalls = {}
super(TestCase, self).__init__(*args, **kw)
def extract_examples():
"""
Call via the I{ade-examples} entry point to extract example files
to a subdirectory I{ade-examples} of your home directory, creating
the subdirectory if necessary.
It will not overwrite existing files, so feel free to modify the
examples. Delete a modified example file (or the whole
subdirectory) and run this again to restore the default file.
"""
import re
pkg_dir = ('ade', 'examples')
from ade.util import msg
msg(True)
import os, os.path, shutil, pkg_resources
sDir = pkg_resources.resource_filename(*pkg_dir)
eDir = os.path.expanduser(os.path.join("~", "-".join(pkg_dir)))
msg("Extracting {} to\n{}\n{}", " ".join(pkg_dir), eDir, "-" * 79)
if os.path.exists(eDir):
msg("Subdirectory already exists")
else:
os.mkdir(eDir)
msg("Subdirectory created")
reFile = re.compile(r'[a-z].+\.(py|c|txt)$')
for fileName in pkg_resources.resource_listdir(*pkg_dir):
if not reFile.match(fileName):
continue
ePath = os.path.join(eDir, fileName)
if os.path.exists(ePath):
msg("{} already exists", ePath)
else:
sPath = os.path.join(sDir, fileName)
if os.path.isfile(sPath):
shutil.copy(sPath, ePath)
msg("{} created", ePath)