summaryrefslogtreecommitdiff
path: root/tools/build/src/util/option.py
blob: 47d6abdff6224725b61bb1d0f0192d2ffa8e1e51 (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
#  Copyright (c) 2005-2010 Vladimir Prus.
#
#  Use, modification and distribution is subject to the Boost Software
#  License Version 1.0. (See accompanying file LICENSE_1_0.txt or
#  http://www.boost.org/LICENSE_1_0.txt)

import sys
import re
import b2.util.regex

options = {}

# Set a value for a named option, to be used when not overridden on the command
# line.
def set(name, value=None):
    
    global options
    
    options[name] = value

def get(name, default_value=None, implied_value=None):

    global options

    matches = b2.util.regex.transform(sys.argv, "--" + re.escape(name) + "=(.*)")
    if matches:
        return matches[-1]
    else:
        m = b2.util.regex.transform(sys.argv, "--(" + re.escape(name) + ")")
        if m and implied_value:
            return implied_value
        elif options.has_key(name) and options[name] != None:
            return options[name]
        else:
            return default_value