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tiramisu-cmdline-parser
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update README.md

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Emmanuel Garette 2018-12-01 08:28:35 +01:00
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144
README.md
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@ -1,60 +1,140 @@
# tiramisu-parser # tiramisu-cmdline-parser
Python3 parser for command-line options and arguments using Tiramisu engine. Python3 parser for command-line options and arguments using Tiramisu engine.
# simple example # example
Let us start with a simple example
```python ```python
#!/usr/bin/env python3 #!/usr/bin/env python3
from tiramisu_cmdline_parser import TiramisuCmdlineParser from tiramisu_cmdline_parser import TiramisuCmdlineParser
from tiramisu import StrOption, BoolOption, SymLinkOption, OptionDescription, \ from tiramisu import IntOption, StrOption, BoolOption, ChoiceOption, \
Config SymLinkOption, OptionDescription, Config
parser = TiramisuCmdlineParser() # build a Config with:
# * a choice for select a sub argument (str, list, int)
choiceoption = ChoiceOption('cmd',
'choice the sub argument',
('str', 'list', 'int'),
properties=('mandatory',
'positional'))
# * a boolean to pass script in verbosity mode with argument -v --verbosity
booloption = BoolOption('verbosity', booloption = BoolOption('verbosity',
'increase output verbosity', 'increase output verbosity',
default=False) default=False)
config = Config(OptionDescription('root', 'root', [StrOption('var', short_booloption = SymLinkOption('v', booloption)
'a string option', # * a string option if cmd is 'str'
properties=('mandatory', str_ = StrOption('str',
'positional')), 'string option',
booloption, properties=('mandatory',),
SymLinkOption('v', booloption)])) requires=[{'option': choiceoption,
'expected': 'str',
'action': 'disabled',
'inverse': True}])
# * a list of strings option if cmd is 'list'
list_ = StrOption('list',
'list string option',
multi=True,
properties=('mandatory',),
requires=[{'option': choiceoption,
'expected': 'list',
'action': 'disabled',
'inverse': True}])
# * an integer option if cmd is 'int'
int_ = IntOption('int',
'int option',
properties=('mandatory',),
requires=[{'option': choiceoption,
'expected': 'int',
'action': 'disabled',
'inverse': True}])
config = Config(OptionDescription('root',
'root',
[choiceoption,
booloption,
short_booloption,
str_,
list_,
int_
]))
# initialise the parser
parser = TiramisuCmdlineParser()
# add the config to parser
parser.add_arguments(config) parser.add_arguments(config)
# parse arguments of current script
parser.parse_args() parser.parse_args()
print('result:', config.value.dict()) # now, print the result
print('result:')
config.property.read_only()
for key, value in config.value.dict().items():
print('- {} ({}): {}'.format(key,
config.option(key).option.doc(),
value))
``` ```
Let's print help:
```bash ```bash
[gnunux@localhost tiramisu-parser]$ ./prog.py -h [gnunux@localhost tiramisu-parser]$ python3 prog.py str -h
usage: prog.py [-h] [-v] var usage: prog.py [-h] [-v] --str STR --list LIST [LIST ...] --int INT
{str,list,int}
positional arguments: positional arguments:
var a string option {str,list,int} choice the sub argument
optional arguments: optional arguments:
-h, --help show this help message and exit -h, --help show this help message and exit
-v, --verbosity increase output verbosity -v, --verbosity increase output verbosity
--str STR string option
--list LIST [LIST ...]
list string option
--int INT int option
```
The positional argument 'cmd' is mandatory:
```bash
[gnunux@localhost tiramisu-parser]$ python3 prog.py
usage: prog.py [-h] [-v] --str STR --list LIST [LIST ...] --int INT
{str,list,int}
prog.py: error: the following arguments are required: cmd
```
If 'cmd' is 'str', --str become mandatory:
```bash
[gnunux@localhost tiramisu-parser]$ python3 prog.py str
usage: prog.py [-h] [-v] --str STR --list LIST [LIST ...] --int INT
{str,list,int}
prog.py: error: the following arguments are required: --str
```
With all mandatories arguments:
```bash
[gnunux@localhost tiramisu-parser]$ python3 prog.py str --str value
result:
- cmd (choice the sub argument): str
- verbosity (increase output verbosity): False
- v (increase output verbosity): False
- str (string option): value
``` ```
```bash ```bash
[gnunux@localhost tiramisu-parser]$ ./prog.py -v [gnunux@localhost tiramisu-parser]$ python3 prog.py int --int 3
usage: prog.py [-h] [-v] var result:
prog.py: error: the following arguments are required: var - cmd (choice the sub argument): int
- verbosity (increase output verbosity): False
- v (increase output verbosity): False
- int (int option): 3
``` ```
```bash ```bash
[gnunux@localhost tiramisu-parser]$ ./prog.py test [gnunux@localhost tiramisu-parser]$ python3 prog.py list --list a b c
result: {'var': 'test', 'verbosity': False, 'v': False} result:
``` - cmd (choice the sub argument): list
- verbosity (increase output verbosity): False
```bash - v (increase output verbosity): False
[gnunux@localhost tiramisu-parser]$ ./prog.py -v test - list (list string option): ['a', 'b', 'c']
result: {'var': 'test', 'verbosity': True, 'v': True}
```
```bash
[gnunux@localhost tiramisu-parser]$ ./prog.py --verbosity test
result: {'var': 'test', 'verbosity': True, 'v': True}
``` ```

30
test/test_simple.py
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@ -22,7 +22,7 @@ for test in listdir(DATA_DIR):
TEST_DIRS.sort() TEST_DIRS.sort()
# TEST_DIRS.remove('test/data/compare/10_positional_list') # TEST_DIRS.remove('test/data/compare/10_positional_list')
# TEST_DIRS = ['test/data/compare/50_conditional_disable'] # TEST_DIRS = ['test/data/compare/10_positional_list']
@fixture(scope="module", params=TEST_DIRS) @fixture(scope="module", params=TEST_DIRS)
@ -76,6 +76,15 @@ def test_files(test_list):
['bar', '--verbosity'], ['--verbosity', 'bar'], ['bar', '--verbosity'], ['--verbosity', 'bar'],
] ]
for arg in args: for arg in args:
# FIXME unknown argument is check before mandatory
if test_list == 'test/data/compare/10_positional_list':
check = False
for subarg in arg:
if not subarg.startswith('-'):
check = True
break
if not check:
continue
tiramparser = TiramisuCmdlineParser('prog.py') tiramparser = TiramisuCmdlineParser('prog.py')
tiramparser_dict, tiramparser_system_err, tiramparser_error, tiramparser_help = import_subfile_and_test(test_list + '/tiramisu.py', tiramparser_dict, tiramparser_system_err, tiramparser_error, tiramparser_help = import_subfile_and_test(test_list + '/tiramisu.py',
tiramparser, arg) tiramparser, arg)
@ -83,15 +92,16 @@ def test_files(test_list):
argparser = ArgumentParser('prog.py') argparser = ArgumentParser('prog.py')
argparser_dict, argparser_system_err, argparser_error, argparser_help = import_subfile_and_test(test_list + '/argparse.py', argparser_dict, argparser_system_err, argparser_error, argparser_help = import_subfile_and_test(test_list + '/argparse.py',
argparser, arg) argparser, arg)
#print(tiramparser_dict) # print('===>', test_list, arg)
#print(tiramparser_system_err) # print(tiramparser_dict)
#print(tiramparser_error) # print(tiramparser_system_err)
#print(tiramparser_help) # print(tiramparser_error)
#print('-----') # print(tiramparser_help)
#print(argparser_dict) # print('-----')
#print(argparser_system_err) # print(argparser_dict)
#print(argparser_error) # print(argparser_system_err)
#print(argparser_help) # print(argparser_error)
# print(argparser_help)
assert tiramparser_dict == argparser_dict assert tiramparser_dict == argparser_dict
assert tiramparser_error == argparser_error assert tiramparser_error == argparser_error
assert tiramparser_help == argparser_help assert tiramparser_help == argparser_help

66
tiramisu_cmdline_parser.py
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@ -23,12 +23,14 @@ from tiramisu.error import PropertiesOptionError
class TiramisuNamespace(Namespace): class TiramisuNamespace(Namespace):
def _populate(self): def _populate(self):
self._config.property.read_only()
for tiramisu_key, tiramisu_value in self._config.value.dict().items(): for tiramisu_key, tiramisu_value in self._config.value.dict().items():
option = self._config.option(tiramisu_key) option = self._config.option(tiramisu_key)
if not isinstance(option.option.get(), SymLinkOption): if not isinstance(option.option.get(), SymLinkOption):
if tiramisu_value == [] and option.option.ismulti() and option.owner.isdefault(): if tiramisu_value == [] and option.option.ismulti() and option.owner.isdefault():
tiramisu_value = None tiramisu_value = None
super().__setattr__(tiramisu_key, tiramisu_value) super().__setattr__(tiramisu_key, tiramisu_value)
self._config.property.read_write()
def __init__(self, config): def __init__(self, config):
self._config = config self._config = config
@ -46,9 +48,7 @@ class TiramisuNamespace(Namespace):
def __getattribute__(self, key): def __getattribute__(self, key):
if key == '__dict__' and hasattr(self, '_config'): if key == '__dict__' and hasattr(self, '_config'):
self._config.property.read_only()
self._populate() self._populate()
self._config.property.read_write()
return super().__getattribute__(key) return super().__getattribute__(key)
@ -77,16 +77,13 @@ class TiramisuCmdlineParser(ArgumentParser):
else: else:
raise NotImplementedError('do not use add_argument') raise NotImplementedError('do not use add_argument')
def add_arguments(self, tiramisu: Union[Config, Option, List[Option], OptionDescription]) -> None: def add_subparsers(self, *args, **kwargs):
if not isinstance(tiramisu, Config): raise NotImplementedError('do not use add_subparsers')
if not isinstance(tiramisu, OptionDescription):
if isinstance(tiramisu, Option): def _config_to_argparser(self,
tiramisu = [tiramisu] _forhelp: bool):
tiramisu = OptionDescription('root', 'root', tiramisu)
tiramisu = Config(tiramisu)
self.config = tiramisu
actions = {} actions = {}
for obj in tiramisu.unrestraint.option.list(): for obj in self.config.unrestraint.option.list():
if obj.option.properties(only_raises=True) or 'frozen' in obj.option.properties(): if obj.option.properties(only_raises=True) or 'frozen' in obj.option.properties():
continue continue
option = obj.option option = obj.option
@ -108,7 +105,7 @@ class TiramisuCmdlineParser(ArgumentParser):
args = [self.prefix_chars + name] args = [self.prefix_chars + name]
else: else:
args = [self.prefix_chars * 2 + name] args = [self.prefix_chars * 2 + name]
if 'mandatory' in properties: if _forhelp and 'mandatory' in properties:
kwargs['required'] = True kwargs['required'] = True
if isinstance(tiramisu_option, BoolOption): if isinstance(tiramisu_option, BoolOption):
if 'mandatory' in properties: if 'mandatory' in properties:
@ -126,7 +123,7 @@ class TiramisuCmdlineParser(ArgumentParser):
#kwargs['action'] = 'store_const' #kwargs['action'] = 'store_const'
kwargs['nargs'] = '?' kwargs['nargs'] = '?'
if option.ismulti(): if option.ismulti():
if 'mandatory' in properties: if _forhelp and 'mandatory' in properties:
kwargs['nargs'] = '+' kwargs['nargs'] = '+'
else: else:
kwargs['nargs'] = '*' kwargs['nargs'] = '*'
@ -147,19 +144,50 @@ class TiramisuCmdlineParser(ArgumentParser):
for args, kwargs in actions.values(): for args, kwargs in actions.values():
super().add_argument(*args, **kwargs) super().add_argument(*args, **kwargs)
def add_arguments(self,
tiramisu: Union[Config, Option, List[Option], OptionDescription],
_forhelp: bool=False) -> None:
if not isinstance(tiramisu, Config):
if not isinstance(tiramisu, OptionDescription):
if isinstance(tiramisu, Option):
tiramisu = [tiramisu]
tiramisu = OptionDescription('root', 'root', tiramisu)
tiramisu = Config(tiramisu)
self.config = tiramisu
self._config_to_argparser(_forhelp)
def parse_args(self, *args, **kwargs): def parse_args(self, *args, **kwargs):
kwargs['namespace'] = TiramisuNamespace(self.config) kwargs['namespace'] = TiramisuNamespace(self.config)
namespaces = super().parse_args(*args, **kwargs)
try: try:
namespaces = super().parse_args(*args, **kwargs) del namespaces.__dict__['_config']
except PropertiesOptionError as err: except PropertiesOptionError as err:
# import traceback if err.proptype == ['mandatory']:
# traceback.print_exc() name = err._option_bag.option.impl_getname()
if err.proptype == ('mandatory',): properties = self.config.option(name).property.get()
self.error('the following arguments are required: {}'.format(err._option_bag.option.impl_getname())) if 'positional' not in properties:
if len(name) == 1 and 'longargument' not in properties:
name = self.prefix_chars + name
else:
name = self.prefix_chars * 2 + name
self.error('the following arguments are required: {}'.format(name))
else: else:
self.error('unexpected error: {}'.format(err)) self.error('unexpected error: {}'.format(err))
del namespaces.__dict__['_config']
return namespaces return namespaces
def format_usage(self, *args, _forhelp=False, **kwargs):
if _forhelp:
return super().format_usage(*args, **kwargs)
help_formatter = TiramisuCmdlineParser(self.prog)
help_formatter.add_arguments(self.config, _forhelp=True)
return help_formatter.format_usage(*args, **kwargs, _forhelp=True)
def format_help(self, *args, _forhelp=False, **kwargs):
if _forhelp:
return super().format_help(*args, **kwargs)
help_formatter = TiramisuCmdlineParser(self.prog)
help_formatter.add_arguments(self.config, _forhelp=True)
return help_formatter.format_help(*args, **kwargs, _forhelp=True)
def get_config(self): def get_config(self):
return self.config return self.config