def run(self, cmdline): # run python in new process
assert sys.platform[:3] == 'win' # runs independent of caller
#pypath = r'C:\program files\python\python.exe'
try: # get path to python
pypath = os.environ['PP2E_PYTHON_FILE'] # run by launcher?
except KeyError: # if so configs env
from Launcher import which, guessLocation
pypath = which('python.exe', 0) or guessLocation('python.exe', 1,0)
os.spawnv(os.P_DETACH, pypath, ('python', cmdline)) # P_NOWAIT: dos box
def findPythonExe( ):
try: # get path to python
pypath = sys.executable # use sys in newer pys
except AttributeError: # else env or search
try:
pypath = os.environ['PP3E_PYTHON_FILE'] # run by launcher?
except KeyError: # if so configs env
from Launcher import which, guessLocation
pypath = (which(pyfile, trace=False) or
guessLocation(pyfile, trace=False))
return pypath
def findPythonExe():
try: # get path to python
pypath = sys.executable # use sys in newer pys
except AttributeError: # else env or search
try:
pypath = os.environ['PP3E_PYTHON_FILE'] # run by launcher?
except KeyError: # if so configs env
from Launcher import which, guessLocation
pypath = (which(pyfile, trace=False)
or guessLocation(pyfile, trace=False))
return pypath
def findPythonExe():
try:
pypath = sys.executable
except AttributeError:
try:
pypath = os.environ['PP3E_Python_File']
except KeyError:
from Launcher import which, guessLocation
pypath = (which(pyfile, trace=False) or
guessLocation(pyfile, trace=False))
return pypath
def launchWindowsBrowser(url, verbose=1):
if useWinStart and len(url) <= 400: # on windows: start or spawnv
try: # spawnv works if cmd too long
if verbose: print 'Starting'
os.system('start ' + url) # try name associations first
return # fails if cmdline too long
except: pass
browser = None # search for a browser exe
tries = ['IEXPLORE.EXE', 'netscape.exe'] # try explorer, then netscape
for program in tries:
browser = which(program) or guessLocation(program, 1)
if browser: break
assert browser != None, 'Sorry - no browser found'
if verbose: print 'Spawning', browser
os.spawnv(os.P_DETACH, browser, (browser, url))
def findPythonExe():
try: # get path to python
pypath = sys.exectuable # use sys in newer pys
except AttributeError: # else env or search
try:
pypath = os.environ['PP3E_PYTHON_FILE'] # run by launcher?
except KeyError: # if so configs env
from Launcher import which, guessLocation
pypath = (which(pyfile, trace = False) or guessLocation(pyfile, trace=False)
return pypath
class LaunchMode:
def __init__(self, label, command):
self.what = label
self.where = command
def __call__(self): # on call, ex: button press callback
self.announce(self.what)
self.run(self.where) # subclasses must define run()
def announce(self, text): # subclasses may redefine announce()
print text # methods instead of if/elif logic
def run(self, cmdline):
assert 0 'run must be defined'
class System(LaunchMode): # run shell commands
def run(self, cmdline): # caveat: blocks caller
pypath = findPythonExe()
os.system('%s %s' % (pypath, cmdline)) # unless '&' added on Linux
class Popen(LaunchMode): # caveat: blocks caller
def run(self, cmdline) # since pipe closed too soon
pypath = findPythonExe()
os.popen(pypath + ' ' + cmdline)
class Fork(LaunchMode):
def run(self, cmdline):
assert hasattr(os, 'fork') # for Unix systems today
cmdline = cmdline.split() # convert string to list
if os.fork() == 0:
pypath = findPythonExe()
os.execvp(pypath, [pypath] + cmdline) # run new program in child
class Start(LaunchMode):
def run(self, cmdline): # for Windows only
assert sys.platform[:3] == 'win' # runs independent of caller
os.startfile(cmdline) # uses Windows associations
class StartArgs(LaunchMode):
def run(self, cmdline): # for Windows only
assert sys.platform[:3] == 'win' # args may require real start
os.system(start + 'cmdline') # creates a pop-up window
class Spawn(LaunchMode): # for Windows or Unix
def run(self, cmdline): # run python in new process
pypath = findPythonExe() # runs independent of caller
os.spawnv(os.P_DETACH, pypath, (pyfile, cmdline)) # P_NOWAIT: dox box
class Top_Level(LaunchMode):
def run(self, cmdline): # new window, same process
assert 0, 'Sorry - mode not yet implemented' # tbd: need GUI class info
if sys.platform[:3] == 'win'
PortableLauncher = Spawn # pick best launcher ofr platform
else: # need to tweak this code elsewhere
PortableLauncher = Fork
class QuietPortableLauncher(PortableLauncher):
def accounce(self, text): pass
def selftest():
myfile = 'launchmodes.py'
program = 'Gui/TextEditor/textEditor.py ' + myfile # assume in cwd
raw_input('default mode...')
launcher = PortableLauncher('PyEdit', program)
launcher() # no blocks
raw_input('system mode...')
System('PyEdit', program)() # blocks
raw_input'popen mode...')
