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1"""
2Logging support for make_layout.
3"""
4
5__author__ = "Steve Dower <steve.dower@python.org>"
6__version__ = "3.8"
7
8import logging
9import sys
10
11__all__ = []
12
13LOG = None
14HAS_ERROR = False
15
16
17def public(f):
18    __all__.append(f.__name__)
19    return f
20
21
22@public
23def configure_logger(ns):
24    global LOG
25    if LOG:
26        return
27
28    LOG = logging.getLogger("make_layout")
29    LOG.level = logging.DEBUG
30
31    if ns.v:
32        s_level = max(logging.ERROR - ns.v * 10, logging.DEBUG)
33        f_level = max(logging.WARNING - ns.v * 10, logging.DEBUG)
34    else:
35        s_level = logging.ERROR
36        f_level = logging.INFO
37
38    handler = logging.StreamHandler(sys.stdout)
39    handler.setFormatter(logging.Formatter("{levelname:8s} {message}", style="{"))
40    handler.setLevel(s_level)
41    LOG.addHandler(handler)
42
43    if ns.log:
44        handler = logging.FileHandler(ns.log, encoding="utf-8", delay=True)
45        handler.setFormatter(
46            logging.Formatter("[{asctime}]{levelname:8s}: {message}", style="{")
47        )
48        handler.setLevel(f_level)
49        LOG.addHandler(handler)
50
51
52class BraceMessage:
53    def __init__(self, fmt, *args, **kwargs):
54        self.fmt = fmt
55        self.args = args
56        self.kwargs = kwargs
57
58    def __str__(self):
59        return self.fmt.format(*self.args, **self.kwargs)
60
61
62@public
63def log_debug(msg, *args, **kwargs):
64    return LOG.debug(BraceMessage(msg, *args, **kwargs))
65
66
67@public
68def log_info(msg, *args, **kwargs):
69    return LOG.info(BraceMessage(msg, *args, **kwargs))
70
71
72@public
73def log_warning(msg, *args, **kwargs):
74    return LOG.warning(BraceMessage(msg, *args, **kwargs))
75
76
77@public
78def log_error(msg, *args, **kwargs):
79    global HAS_ERROR
80    HAS_ERROR = True
81    return LOG.error(BraceMessage(msg, *args, **kwargs))
82
83
84@public
85def log_exception(msg, *args, **kwargs):
86    global HAS_ERROR
87    HAS_ERROR = True
88    return LOG.exception(BraceMessage(msg, *args, **kwargs))
89
90
91@public
92def error_was_logged():
93    return HAS_ERROR
94