remove_pardir_symbols() - Code Metrics - lambdalisue/django-roughpages - Measure and Improve Code Quality continuously with Scrutinizer

remove_pardir_symbols() A
last analyzed 2017-02-11 14:59 UTC

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Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
c	1
b	0
f	0
dl	0
loc	15
rs	9.4285

# coding=utf-8
"""
"""
__author__ = 'Alisue <[email protected]>'
import os


def url_to_filename(url):
    """
    Safely translate url to relative filename

    Args:
        url (str): A target url string

    Returns:
        str
    """
    # remove leading/trailing slash
    if url.startswith('/'):
        url = url[1:]
    if url.endswith('/'):
        url = url[:-1]
    # remove pardir symbols to prevent unwilling filesystem access
    url = remove_pardir_symbols(url)
    # replace dots to underscore in filename part
    url = replace_dots_to_underscores_at_last(url)
    return url


def remove_pardir_symbols(path, sep=os.sep, pardir=os.pardir):
    """
    Remove relative path symobls such as '..'

    Args:
        path (str): A target path string
        sep (str): A strint to refer path delimiter (Default: `os.sep`)
        pardir (str): A string to refer parent directory (Default: `os.pardir`)

    Returns:
        str
    """
    bits = path.split(sep)
    bits = (x for x in bits if x != pardir)
    return sep.join(bits)


def replace_dots_to_underscores_at_last(path):
    """
    Remove dot ('.') while a dot is treated as a special character in backends

    Args:
        path (str): A target path string

    Returns:
        str
    """
    if path == '':
        return path
    bits = path.split('/')
    bits[-1] = bits[-1].replace('.', '_')
    return '/'.join(bits)


if __name__ == '__main__':
    import doctest
    doctest.testmod()


1			# coding=utf-8
2			"""
3			"""
4			__author__ = 'Alisue <[email protected]>'
5			import os
6
7
8			def url_to_filename(url):
9			"""
10			Safely translate url to relative filename
11
12			Args:
13			url (str): A target url string
14
15			Returns:
16			str
17			"""
18			# remove leading/trailing slash
19			if url.startswith('/'):
20			url = url[1:]
21			if url.endswith('/'):
22			url = url[:-1]
23			# remove pardir symbols to prevent unwilling filesystem access
24			url = remove_pardir_symbols(url)
25			# replace dots to underscore in filename part
26			url = replace_dots_to_underscores_at_last(url)
27			return url
28
29
30			def remove_pardir_symbols(path, sep=os.sep, pardir=os.pardir):
31			"""
32			Remove relative path symobls such as '..'
33
34			Args:
35			path (str): A target path string
36			sep (str): A strint to refer path delimiter (Default: `os.sep`)
37			pardir (str): A string to refer parent directory (Default: `os.pardir`)
38
39			Returns:
40			str
41			"""
42			bits = path.split(sep)
43			bits = (x for x in bits if x != pardir)
44			return sep.join(bits)
45
46
47			def replace_dots_to_underscores_at_last(path):
48			"""
49			Remove dot ('.') while a dot is treated as a special character in backends
50
51			Args:
52			path (str): A target path string
53
54			Returns:
55			str
56			"""
57			if path == '':
58			return path
59			bits = path.split('/')
60			bits[-1] = bits[-1].replace('.', '_')
61			return '/'.join(bits)
62
63
64			if __name__ == '__main__':
65			import doctest
66			doctest.testmod()
67

lambdalisue / django-roughpages

remove_pardir_symbols() A last analyzed 2017-02-11 14:59 UTC

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remove_pardir_symbols() A
last analyzed 2017-02-11 14:59 UTC