123 lines
2.8 KiB
Python
123 lines
2.8 KiB
Python
"""Global utils collection."""
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import contextlib
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import re
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import sys
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from contextlib import suppress
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from distutils.version import LooseVersion
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import yaml
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from ansiblelater import logger
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try:
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import ConfigParser as configparser # noqa
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except ImportError:
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import configparser # noqa
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LOG = logger.get_logger(__name__)
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def count_spaces(c_string):
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leading_spaces = 0
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trailing_spaces = 0
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for _i, e in enumerate(c_string):
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if not e.isspace():
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break
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leading_spaces += 1
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for _i, e in reversed(list(enumerate(c_string))):
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if not e.isspace():
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break
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trailing_spaces += 1
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return ((leading_spaces, trailing_spaces))
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def standards_latest(standards):
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return max([standard.version for standard in standards if standard.version] or ["0.1"],
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key=LooseVersion)
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def lines_ranges(lines_spec):
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if not lines_spec:
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return None
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result = []
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for interval in lines_spec.split(","):
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(start, end) = interval.split("-")
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result.append(range(int(start), int(end) + 1))
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return result
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def is_line_in_ranges(line, ranges):
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return not ranges or any(line in r for r in ranges)
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def safe_load(string):
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"""
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Parse the provided string returns a dict.
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:param string: A string to be parsed.
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:returns: dict
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"""
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with suppress(yaml.scanner.ScannerError):
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return yaml.safe_load(string) or {}
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@contextlib.contextmanager
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def open_file(filename, mode="r"):
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"""
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Open the provide file safely and returns a file type.
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:param filename: A string containing an absolute path to the file to open.
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:param mode: A string describing the way in which the file will be used.
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:returns: file type
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"""
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with open(filename, mode) as stream:
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yield stream
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def add_dict_branch(tree, vector, value):
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key = vector[0]
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tree[key] = value \
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if len(vector) == 1 \
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else add_dict_branch(tree[key] if key in tree else {},
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vector[1:],
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value)
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return tree
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def has_jinja(value):
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"""Return true if a string seems to contain jinja templating."""
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re_has_jinja = re.compile(r"{[{%#].*[%#}]}", re.DOTALL)
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return bool(isinstance(value, str) and re_has_jinja.search(value))
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def has_glob(value):
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"""Return true if a string looks like having a glob pattern."""
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re_has_glob = re.compile("[][*?]")
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return bool(isinstance(value, str) and re_has_glob.search(value))
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def sysexit(code=1):
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sys.exit(code)
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def sysexit_with_message(msg, code=1):
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LOG.critical(msg)
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sysexit(code)
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class Singleton(type):
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"""Meta singleton class."""
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_instances = {}
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def __call__(cls, *args, **kwargs):
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if cls not in cls._instances:
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cls._instances[cls] = super().__call__(*args, **kwargs)
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return cls._instances[cls]
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