/usr/lib/scons/SCons/Variables/PathVariable.py is in scons 2.5.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | """SCons.Variables.PathVariable
This file defines an option type for SCons implementing path settings.
To be used whenever a user-specified path override should be allowed.
Arguments to PathVariable are:
option-name = name of this option on the command line (e.g. "prefix")
option-help = help string for option
option-dflt = default value for this option
validator = [optional] validator for option value. Predefined
validators are:
PathAccept -- accepts any path setting; no validation
PathIsDir -- path must be an existing directory
PathIsDirCreate -- path must be a dir; will create
PathIsFile -- path must be a file
PathExists -- path must exist (any type) [default]
The validator is a function that is called and which
should return True or False to indicate if the path
is valid. The arguments to the validator function
are: (key, val, env). The key is the name of the
option, the val is the path specified for the option,
and the env is the env to which the Options have been
added.
Usage example:
Examples:
prefix=/usr/local
opts = Variables()
opts = Variables()
opts.Add(PathVariable('qtdir',
'where the root of Qt is installed',
qtdir, PathIsDir))
opts.Add(PathVariable('qt_includes',
'where the Qt includes are installed',
'$qtdir/includes', PathIsDirCreate))
opts.Add(PathVariable('qt_libraries',
'where the Qt library is installed',
'$qtdir/lib'))
"""
#
# Copyright (c) 2001 - 2016 The SCons Foundation
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# without limitation the rights to use, copy, modify, merge, publish,
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# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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#
__revision__ = "src/engine/SCons/Variables/PathVariable.py rel_2.5.1:3735:9dc6cee5c168 2016/11/03 14:02:02 bdbaddog"
__all__ = ['PathVariable',]
import os
import os.path
import SCons.Errors
class _PathVariableClass(object):
def PathAccept(self, key, val, env):
"""Accepts any path, no checking done."""
pass
def PathIsDir(self, key, val, env):
"""Validator to check if Path is a directory."""
if not os.path.isdir(val):
if os.path.isfile(val):
m = 'Directory path for option %s is a file: %s'
else:
m = 'Directory path for option %s does not exist: %s'
raise SCons.Errors.UserError(m % (key, val))
def PathIsDirCreate(self, key, val, env):
"""Validator to check if Path is a directory,
creating it if it does not exist."""
if os.path.isfile(val):
m = 'Path for option %s is a file, not a directory: %s'
raise SCons.Errors.UserError(m % (key, val))
if not os.path.isdir(val):
os.makedirs(val)
def PathIsFile(self, key, val, env):
"""Validator to check if Path is a file"""
if not os.path.isfile(val):
if os.path.isdir(val):
m = 'File path for option %s is a directory: %s'
else:
m = 'File path for option %s does not exist: %s'
raise SCons.Errors.UserError(m % (key, val))
def PathExists(self, key, val, env):
"""Validator to check if Path exists"""
if not os.path.exists(val):
m = 'Path for option %s does not exist: %s'
raise SCons.Errors.UserError(m % (key, val))
def __call__(self, key, help, default, validator=None):
"""
The input parameters describe a 'path list' option, thus they
are returned with the correct converter and validator appended. The
result is usable for input to opts.Add() .
The 'default' option specifies the default path to use if the
user does not specify an override with this option.
validator is a validator, see this file for examples
"""
if validator is None:
validator = self.PathExists
if SCons.Util.is_List(key) or SCons.Util.is_Tuple(key):
return (key, '%s ( /path/to/%s )' % (help, key[0]), default,
validator, None)
else:
return (key, '%s ( /path/to/%s )' % (help, key), default,
validator, None)
PathVariable = _PathVariableClass()
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
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