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1 | # Copyright Pedro Ferreira 2005. Distributed under the Boost |
2 | # Software License, Version 1.0. (See accompanying | |
3 | # file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
4 | ||
5 | import sys | |
6 | ||
7 | class NullLogger: | |
8 | def __init__ (self): | |
9 | self.indent_ = '' | |
10 | ||
11 | def log (self, source_name, *args): | |
12 | if self.on () and self.interesting (source_name): | |
13 | self.do_log (self.indent_) | |
14 | for i in args: | |
15 | self.do_log (i) | |
16 | self.do_log ('\n') | |
17 | ||
18 | def increase_indent (self): | |
19 | if self.on (): | |
20 | self.indent_ += ' ' | |
21 | ||
22 | def decrease_indent (self): | |
23 | if self.on () and len (self.indent_) > 4: | |
24 | self.indent_ = self.indent_ [-4:] | |
25 | ||
26 | def do_log (self, *args): | |
27 | pass | |
28 | ||
29 | def interesting (self, source_name): | |
30 | return False | |
31 | ||
32 | def on (self): | |
33 | return True | |
34 | ||
35 | class TextLogger (NullLogger): | |
36 | def __init__ (self): | |
37 | NullLogger.__init__ (self) | |
38 | ||
39 | def do_log (self, arg): | |
40 | sys.stdout.write (str (arg)) | |
41 | ||
42 | def interesting (self, source_name): | |
43 | return True | |
44 | ||
45 | def on (self): | |
46 | return True |