class Scheduler:
frequency_help = trim_docstring(frequency_help)
def __init__(self):
try:
self._sys_scheduler = get_scheduler()
except PlatformError as e:
raise SchedulerError('scheduler error: ' + str(e))
def set_frequency(self, freq):
assert type(freq) == str
if freq is None:
return
cmd = const.scheduler_cmdline
taskname = const.scheduler_task_name
try:
self._sys_scheduler.parse(freq)
if self._sys_scheduler.exists(taskname):
self._sys_scheduler.delete(taskname)
r = self._sys_scheduler.schedule(freq, cmd, taskname)
print('schedule creation %s..' % ('succeeded' if r else 'failed'))
except FrequencyError as e:
help = trim_docstring(self._sys_scheduler.parse.__doc__)
raise SchedulerError('scheduler error: ' + str(e) + '\n' + help)
def remove(self):
taskname = const.scheduler_task_name
if self._sys_scheduler.exists(taskname):
r = self._sys_scheduler.delete(taskname)
print('schedule deletion %s..' % ('succeeded' if r else 'failed'))
else:
print('no schedule exists..')
def set_frequency(self, freq):
assert type(freq) == str
if freq is None:
return
cmd = const.scheduler_cmdline
taskname = const.scheduler_task_name
try:
self._sys_scheduler.parse(freq)
if self._sys_scheduler.exists(taskname):
self._sys_scheduler.delete(taskname)
r = self._sys_scheduler.schedule(freq, cmd, taskname)
print('schedule creation %s..' % ('succeeded' if r else 'failed'))
except FrequencyError as e:
help = trim_docstring(self._sys_scheduler.parse.__doc__)
raise SchedulerError('scheduler error: ' + str(e) + '\n' + help)
def _format_usage(self, usage, actions, groups, prefix):
help = ''
usage = 'usage: ' + self._prog + ' '
optionals = []
positionals = []
col1 = 0
for action in actions:
if action.option_strings:
optionals.append(action)
names_len = len(', '.join(action.option_strings)) + 2
col1 = names_len if names_len > col1 else col1
else:
positionals.append(action)
names_len = 0
if action.__class__ == _SubParsersAction:
names_len = max([len(n) for n in action.choices.keys()]) + 2
else:
names_len = len(action.dest) + 2
col1 = names_len if names_len > col1 else col1
terminal_width, _ = get_terminal_size()
col2 = terminal_width - col1
def format_help_lines(lines):
out = ''
first_line = True
at_least_one_line = False
for line in lines:
if first_line:
out += line
first_line = False
else:
out += ('{0:<%d}{1}'%col1).format('', line)
out += os.linesep
at_least_one_line = True
if not at_least_one_line:
out += os.linesep
return out
def format_action(name, helptext, choices, default, is_action, hidden):
if hidden:
return ''
out = ''
def wrap(text):
lines = []
if text is not None and len(text) > 0 :
lines = textwrap.wrap(text, col2)
return lines
help_lines = []
if helptext is not None:
for help_line in helptext.split('\n'):
help_lines += wrap(help_line.strip())
if choices is not None:
choices = 'choices: ' + ', '.join(choices)
choices_lines = wrap(choices)
default_lines = []
if not is_action:
if not default in [None, SUPPRESS] :
default = 'default: ' + str(default)
else:
default = None
default_lines = wrap(default)
out += ('{0:<%d}'%(col1)).format(name)
out += format_help_lines(help_lines + choices_lines + default_lines)
return out
pos_usage = ''
has_subcmd = False
for p in positionals:
if p.__class__ == _SubParsersAction:
has_subcmd = True
help += os.linesep + 'subcommands:' + os.linesep
for subcmd in p.choices.keys():
help += format_action(subcmd, p.choices[subcmd].description, None, None, False, False)
usage += 'subcommand [args...]'
else:
hidden = getattr(p, const.action_hidden_attr, False) or False
help += format_action(p.dest, p.help, p.choices, p.default, False, hidden)
pos_usage += '%s '%p.dest
if len(optionals) > 0:
usage += '[options] ' if not has_subcmd else ''
help += os.linesep + 'options:' + os.linesep
usage += pos_usage
for o in optionals:
name = ', '.join(o.option_strings)
is_action = True if issubclass(o.__class__, Action) else False
hidden = getattr(o, const.action_hidden_attr, False) or False
help += format_action(name, o.help, o.choices, o.default, is_action, hidden)
if self._extrahelp is not None:
help += os.linesep + trim_docstring(self._extrahelp)
usage += os.linesep + os.linesep
if help == '':
return None
return usage + help
def _format_text(self, text): return trim_docstring(text) + os.linesep
def _format_usage(self, usage, actions, groups, prefix):
help = ''
usage = 'usage: ' + self._prog + ' '
optionals = []
positionals = []
col1 = 0
for action in actions:
if action.option_strings:
optionals.append(action)
names_len = len(', '.join(action.option_strings)) + 2
col1 = names_len if names_len > col1 else col1
else:
positionals.append(action)
names_len = 0
if action.__class__ == _SubParsersAction:
names_len = max([len(n)
for n in action.choices.keys()]) + 2
else:
names_len = len(action.dest) + 2
col1 = names_len if names_len > col1 else col1
terminal_width, _ = get_terminal_size()
col2 = terminal_width - col1
def format_help_lines(lines):
out = ''
first_line = True
at_least_one_line = False
for line in lines:
if first_line:
out += line
first_line = False
else:
out += ('{0:<%d}{1}' % col1).format('', line)
out += os.linesep
at_least_one_line = True
if not at_least_one_line:
out += os.linesep
return out
def format_action(name, helptext, choices, default, is_action, hidden):
if hidden:
return ''
out = ''
def wrap(text):
lines = []
if text is not None and len(text) > 0:
lines = textwrap.wrap(text, col2)
return lines
help_lines = []
if helptext is not None:
for help_line in helptext.split('\n'):
help_lines += wrap(help_line.strip())
if choices is not None:
choices = 'choices: ' + ', '.join(choices)
choices_lines = wrap(choices)
default_lines = []
if not is_action:
if not default in [None, SUPPRESS]:
default = 'default: ' + str(default)
else:
default = None
default_lines = wrap(default)
out += ('{0:<%d}' % (col1)).format(name)
out += format_help_lines(help_lines + choices_lines +
default_lines)
return out
pos_usage = ''
has_subcmd = False
for p in positionals:
if p.__class__ == _SubParsersAction:
has_subcmd = True
help += os.linesep + 'subcommands:' + os.linesep
for subcmd in p.choices.keys():
help += format_action(subcmd,
p.choices[subcmd].description, None,
None, False, False)
usage += 'subcommand [args...]'
else:
hidden = getattr(p, const.action_hidden_attr, False) or False
help += format_action(p.dest, p.help, p.choices, p.default,
False, hidden)
pos_usage += '%s ' % p.dest
if len(optionals) > 0:
usage += '[options] ' if not has_subcmd else ''
help += os.linesep + 'options:' + os.linesep
usage += pos_usage
for o in optionals:
name = ', '.join(o.option_strings)
is_action = True if issubclass(o.__class__, Action) else False
hidden = getattr(o, const.action_hidden_attr, False) or False
help += format_action(name, o.help, o.choices, o.default,
is_action, hidden)
if self._extrahelp is not None:
help += os.linesep + trim_docstring(self._extrahelp)
usage += os.linesep + os.linesep
if help == '':
return None
return usage + help
def _format_text(self, text):
return trim_docstring(text) + os.linesep