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# Copyright Pedro Ferreira 2005. Distributed under the Boost
# Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
import sys
class NullLogger:
def __init__ (self):
self.indent_ = ''
def log (self, source_name, *args):
if self.on () and self.interesting (source_name):
self.do_log (self.indent_)
for i in args:
self.do_log (i)
self.do_log ('\n')
def increase_indent (self):
if self.on ():
self.indent_ += ' '
def decrease_indent (self):
if self.on () and len (self.indent_) > 4:
self.indent_ = self.indent_ [-4:]
def do_log (self, *args):
pass
def interesting (self, source_name):
return False
def on (self):
return True
class TextLogger (NullLogger):
def __init__ (self):
NullLogger.__init__ (self)
def do_log (self, arg):
sys.stdout.write (str (arg))
def interesting (self, source_name):
return True
def on (self):
return True
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