def main():
rmc = Viewer()
arg = None
isfile = True
if len(argv) > 1:
arg = abspath(argv[1])
if not exists(arg):
arg = None
elif isdir(arg):
isfile = False
dngs = [f for f in listdir(arg) if f.lower().endswith(".dng")]
if len(dngs) > 0:
isfile = True
if arg and isfile:
rmc.load(abspath(arg))
else:
rmc.openBrowser(arg)
ret = rmc.run()
PerformanceLog.PLOG_PRINT()
return ret
