def read_rules(options, args):
"""
Instantiate and return a Blueprint object created by rules read from
either standard input or the given pathname.
"""
try:
pathname = args[0]
except IndexError:
pathname = None
pathname, stdin = '-' == pathname and (None, True) or (pathname, False)
r = rules.none()
if not os.isatty(sys.stdin.fileno()) or stdin:
r.parse(sys.stdin)
with context_managers.mkdtemp():
b = blueprint.Blueprint.rules(r, 'blueprint-rendered-rules')
b.commit(options.message or '')
return b
if pathname is not None:
name, _ = os.path.splitext(os.path.basename(pathname))
try:
r.parse(open(pathname))
with context_managers.mkdtemp():
b = blueprint.Blueprint.rules(r, name)
b.commit(options.message or '')
return b
except blueprint.NameError:
logging.error('invalid blueprint name {0}'.format(name))
sys.exit(1)
except IOError:
logging.error('{0} does not exist'.format(pathname))
sys.exit(1)
logging.error('no rules found on standard input')
sys.exit(1)
def read_rules(options, args):
"""
Instantiate and return a Blueprint object created by rules read from
either standard input or the given pathname.
"""
try:
pathname = args[0]
except IndexError:
pathname = None
pathname, stdin = '-' == pathname and (None, True) or (pathname, False)
r = rules.none()
if not os.isatty(sys.stdin.fileno()) or stdin:
r.parse(sys.stdin)
with context_managers.mkdtemp():
b = blueprint.Blueprint.rules(r, 'blueprint-rendered-rules')
b.commit(options.message or '')
return b
if pathname is not None:
name, _ = os.path.splitext(os.path.basename(pathname))
try:
r.parse(open(pathname))
with context_managers.mkdtemp():
b = blueprint.Blueprint.rules(r, name)
b.commit(options.message or '')
return b
except blueprint.NameError:
logging.error('invalid blueprint name {0}'.format(name))
sys.exit(1)
except IOError:
logging.error('{0} does not exist'.format(pathname))
sys.exit(1)
logging.error('no rules found on standard input')
sys.exit(1)
def create(options, args):
"""
Instantiate and return a Blueprint object from either standard input or by
reverse-engineering the system.
"""
try:
with context_managers.mkdtemp():
if not os.isatty(sys.stdin.fileno()):
try:
b = blueprint.Blueprint.load(sys.stdin, args[0])
except ValueError:
logging.error(
'standard input contains invalid blueprint JSON')
sys.exit(1)
else:
b = blueprint.Blueprint.create(args[0])
if options.subtrahend:
logging.info('subtracting {0}'.format(options.subtrahend))
b_s = blueprint.Blueprint.checkout(options.subtrahend)
b = b - b_s
b.commit(options.message or '')
return b
except blueprint.NameError:
logging.error('invalid blueprint name')
sys.exit(1)
def create(options, args):
"""
Instantiate and return a Blueprint object from either standard input or by
reverse-engineering the system.
"""
try:
with context_managers.mkdtemp():
if not os.isatty(sys.stdin.fileno()):
try:
b = blueprint.Blueprint.load(sys.stdin, args[0])
except ValueError:
logging.error(
'standard input contains invalid blueprint JSON')
sys.exit(1)
else:
b = blueprint.Blueprint.create(args[0])
if options.subtrahend:
logging.info('subtracting {0}'.format(options.subtrahend))
b_s = blueprint.Blueprint.checkout(options.subtrahend)
b = b - b_s
b.commit(options.message or '')
return b
except blueprint.NameError:
logging.error('invalid blueprint name')
sys.exit(1)