mirror of
https://github.com/Relintai/pandemonium_engine.git
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108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
# MIT License
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#
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# Copyright The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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"""Variable type for package Variables.
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To be used whenever a 'package' may be enabled/disabled and the
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package path may be specified.
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Given these options ::
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x11=no (disables X11 support)
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x11=yes (will search for the package installation dir)
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x11=/usr/local/X11 (will check this path for existence)
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Can be used as a replacement for autoconf's ``--with-xxx=yyy`` ::
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opts = Variables()
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opts.Add(
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PackageVariable(
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key='x11',
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help='use X11 installed here (yes = search some places)',
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default='yes'
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)
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)
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...
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if env['x11'] == True:
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dir = ... # search X11 in some standard places ...
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env['x11'] = dir
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if env['x11']:
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... # build with x11 ...
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"""
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from typing import Tuple, Callable
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import SCons.Errors
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__all__ = ['PackageVariable',]
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ENABLE_STRINGS = ('1', 'yes', 'true', 'on', 'enable', 'search')
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DISABLE_STRINGS = ('0', 'no', 'false', 'off', 'disable')
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def _converter(val):
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""" """
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lval = val.lower()
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if lval in ENABLE_STRINGS:
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return True
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if lval in DISABLE_STRINGS:
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return False
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return val
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def _validator(key, val, env, searchfunc) -> None:
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""" """
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# NB: searchfunc is currently undocumented and unsupported
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# TODO write validator, check for path
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import os
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if env[key] is True:
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if searchfunc:
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env[key] = searchfunc(key, val)
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elif env[key] and not os.path.exists(val):
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raise SCons.Errors.UserError(
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'Path does not exist for option %s: %s' % (key, val))
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def PackageVariable(key, help, default, searchfunc=None) -> Tuple[str, str, str, Callable, Callable]:
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"""Return a tuple describing a package list SCons Variable.
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The input parameters describe a 'package list' option. Returns
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a tuple including the correct converter and validator appended.
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The result is usable as input to :meth:`Add` .
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A 'package list' option may either be 'all', 'none' or a pathname
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string. This information is appended to *help*.
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"""
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# NB: searchfunc is currently undocumented and unsupported
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help = '\n '.join(
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(help, '( yes | no | /path/to/%s )' % key))
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return (key, help, default,
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lambda k, v, e: _validator(k, v, e, searchfunc),
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_converter)
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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