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# R Overlay -- constants
# Copyright 2006-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import copy
import time
_CONSTANTS = dict (
DESCRIPTION = dict (
field_separator = ':',
comment_char = '#',
list_split_regex = '\s*[,;]{1}\s*',
file_name = 'DESCRIPTION',
),
R_PACKAGE = dict (
suffix_regex = '[.](tgz|tbz2|tar|(tar[.](gz|bz2)))',
name_ver_separator = '_',
),
EBUILD = dict (
indent = '\t',
default_header = '\n'.join ( (
'# Copyright 1999-%i Gentoo Foundation' % ( time.gmtime() [0] ),
'# Distributed under the terms of the GNU General Public License v2',
'# $Header: $',
'',
'EAPI=4',
'',
'inherit R-packages'
) ),
),
OVERLAY = dict (
category = 'sci-R',
),
)
def lookup ( key, fallback_value=None ):
"""Looks up a constant. See config.get (...) for details.
Returns constant if found else None.
"""
path = key.split ( '.' )
const_position = _CONSTANTS
for k in path:
if k in const_position:
const_position = const_position [k]
else:
return fallback_value
return const_position
def clone ( ):
"""Returns a deep copy of the constants."""
return copy.deepcopy ( _CONSTANTS )
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