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# R Overlay -- ebuild construction
# Copyright 2006-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
class Ebuilder ( object ):
"""Used to create ebuilds."""
def __init__ ( self ):
self._evars = list()
# newlines \n will be inserted after an evar if the priority
# delta (current evar, next evar) is >= this value.
# <= 0 means newline after each statement
self.min_newline_distance = 20
def sort ( self ):
"""Sorts the content of the Ebuilder."""
self._evars.sort ( key=lambda e: ( e.priority, e.name ) )
#self._evars.sort ( key=lambda e: e.priority )
def get_lines ( self ):
"""Creates and returns (ordered) text lines."""
self.sort()
last = len ( self._evars ) - 1
newline = lambda i, k=1 : abs (
self._evars [i + k].priority - self._evars [i].priority
) >= self.min_newline_distance
lines = list()
for index, e in enumerate ( self._evars ):
if e.active():
lines.append ( str ( e ) )
if index < last and newline ( index ): lines.append ( '' )
return lines
# --- end of get_lines (...) ---
def to_str ( self ): return '\n'.join ( self.get_lines() )
__str__ = to_str
def use ( self, *evar_list ):
"""Adds evars to this Ebuilder.
arguments:
* *evar_list --
"""
for e in evar_list:
if e is not None: self._evars.append ( e )
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