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# Licensed to the StackStorm, Inc ('StackStorm') under one or more |
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# contributor license agreements. See the NOTICE file distributed with |
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# this work for additional information regarding copyright ownership. |
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# The ASF licenses this file to You under the Apache License, Version 2.0 |
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# (the "License"); you may not use this file except in compliance with |
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# the License. You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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import os |
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import sys |
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import collections |
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import six |
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__all__ = [ |
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'prefix_dict_keys', |
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'compare_path_file_name' |
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] |
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def prefix_dict_keys(dictionary, prefix='_'): |
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""" |
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Prefix dictionary keys with a provided prefix. |
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:param dictionary: Dictionary whose keys to prefix. |
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:type dictionary: ``dict`` |
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:param prefix: Key prefix. |
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:type prefix: ``str`` |
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:rtype: ``dict``: |
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""" |
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result = {} |
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for key, value in six.iteritems(dictionary): |
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result['%s%s' % (prefix, key)] = value |
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return result |
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def compare_path_file_name(file_path_a, file_path_b): |
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""" |
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Custom compare function which compares full absolute file paths just using |
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the file name. |
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This function can be used with ``sorted`` or ``list.sort`` function. |
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""" |
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file_name_a = os.path.basename(file_path_a) |
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file_name_b = os.path.basename(file_path_b) |
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return file_name_a < file_name_b |
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def strip_shell_chars(input_str): |
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""" |
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Strips the last '\r' or '\n' or '\r\n' string at the end of |
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the input string. This is typically used to strip ``stdout`` |
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and ``stderr`` streams of those characters. |
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:param input_str: Input string to be stripped. |
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:type input_str: ``str`` |
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:rtype: ``str`` |
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""" |
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stripped_str = rstrip_last_char(input_str, '\n') |
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stripped_str = rstrip_last_char(stripped_str, '\r') |
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return stripped_str |
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def rstrip_last_char(input_str, char_to_strip): |
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""" |
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Strips the last `char_to_strip` from input_str if |
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input_str ends with `char_to_strip`. |
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:param input_str: Input string to be stripped. |
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:type input_str: ``str`` |
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:rtype: ``str`` |
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""" |
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if not input_str: |
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return input_str |
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if not char_to_strip: |
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return input_str |
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if input_str.endswith(char_to_strip): |
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return input_str[:-len(char_to_strip)] |
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return input_str |
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def deep_update(d, u): |
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""" |
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Perform deep merge / update of the target dict. |
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""" |
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for k, v in u.iteritems(): |
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if isinstance(v, collections.Mapping): |
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r = deep_update(d.get(k, {}), v) |
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d[k] = r |
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else: |
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d[k] = u[k] |
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return d |
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def get_normalized_file_path(file_path): |
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""" |
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Return a full normalized file path for the provided path string. |
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:rtype: ``str`` |
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""" |
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if hasattr(sys, 'frozen'): # support for py2exe |
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file_path = 'logging%s__init__%s' % (os.sep, file_path[-4:]) |
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elif file_path[-4:].lower() in ['.pyc', '.pyo']: |
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file_path = file_path[:-4] + '.py' |
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else: |
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file_path = file_path |
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file_path = os.path.normcase(file_path) |
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return file_path |
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Plexxi /
st2
