blob: 53d68702df8225770c92cc0f2b60736c94677be0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
# Copyright (c) 2017 Ansible Project
# Simplified BSD License (see licenses/simplified_bsd.txt or https://opensource.org/licenses/BSD-2-Clause)
# The rules used in these functions are derived from the below
# https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
# https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/
Function Escape-Argument($argument, $force_quote = $false) {
# this converts a single argument to an escaped version, use Join-Arguments
# instead of this function as this only escapes a single string.
# check if argument contains a space, \n, \t, \v or "
if ($force_quote -eq $false -and $argument.Length -gt 0 -and $argument -notmatch "[ \n\t\v`"]") {
# argument does not need escaping (and we don't want to force it),
# return as is
return $argument
}
else {
# we need to quote the arg so start with "
$new_argument = '"'
for ($i = 0; $i -lt $argument.Length; $i++) {
$num_backslashes = 0
# get the number of \ from current char until end or not a \
while ($i -ne ($argument.Length - 1) -and $argument[$i] -eq "\") {
$num_backslashes++
$i++
}
$current_char = $argument[$i]
if ($i -eq ($argument.Length - 1) -and $current_char -eq "\") {
# We are at the end of the string so we need to add the same \
# * 2 as the end char would be a "
$new_argument += ("\" * ($num_backslashes + 1) * 2)
}
elseif ($current_char -eq '"') {
# we have a inline ", we need to add the existing \ but * by 2
# plus another 1
$new_argument += ("\" * (($num_backslashes * 2) + 1))
$new_argument += $current_char
}
else {
# normal character so no need to escape the \ we have counted
$new_argument += ("\" * $num_backslashes)
$new_argument += $current_char
}
}
# we need to close the special arg with a "
$new_argument += '"'
return $new_argument
}
}
Function Argv-ToString($arguments, $force_quote = $false) {
# Takes in a list of un escaped arguments and convert it to a single string
# that can be used when starting a new process. It will escape the
# characters as necessary in the list.
# While there is a CommandLineToArgvW function there is a no
# ArgvToCommandLineW that we can call to convert a list to an escaped
# string.
# You can also pass in force_quote so that each argument is quoted even
# when not necessary, by default only arguments with certain characters are
# quoted.
# TODO: add in another switch which will escape the args for cmd.exe
$escaped_arguments = @()
foreach ($argument in $arguments) {
$escaped_argument = Escape-Argument -argument $argument -force_quote $force_quote
$escaped_arguments += $escaped_argument
}
return ($escaped_arguments -join ' ')
}
# this line must stay at the bottom to ensure all defined module parts are exported
Export-ModuleMember -Alias * -Function * -Cmdlet *
|
