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"""scons.Builder
XXX
"""
__revision__ = "Builder.py __REVISION__ __DATE__ __DEVELOPER__"
import os
from types import *
from scons.Node.FS import Dir, File, lookup
class Builder:
"""Base class for Builders, objects that create output
nodes (files) from input nodes (files).
"""
def __init__(self, name = None,
action = None,
input_suffix = None,
output_suffix = None,
node_class = File):
self.name = name
self.action = action
self.insuffix = input_suffix
self.outsuffix = output_suffix
self.node_class = node_class
if not self.insuffix is None and self.insuffix[0] != '.':
self.insuffix = '.' + self.insuffix
if not self.outsuffix is None and self.outsuffix[0] != '.':
self.outsuffix = '.' + self.outsuffix
def __cmp__(self, other):
return cmp(self.__dict__, other.__dict__)
def __call__(self, target = None, source = None):
node = lookup(self.node_class, target)
node.builder_set(self)
node.sources = source # XXX REACHING INTO ANOTHER OBJECT
return node
def execute(self, **kw):
"""Execute a builder's action to create an output object.
"""
# XXX THIS SHOULD BE DONE BY TURNING Builder INTO A FACTORY
# FOR SUBCLASSES FOR StringType AND FunctionType
t = type(self.action)
if t == StringType:
cmd = self.action % kw
print cmd
os.system(cmd)
elif t == FunctionType:
# XXX WHAT SHOULD WE PRINT HERE
self.action(kw)
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