Mercurial > sci
comparison log.c @ 0:f1de39079243
misc: initial import
author | David Demelier <markand@malikania.fr> |
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date | Mon, 07 Jun 2021 09:41:37 +0200 |
parents | |
children | 3051ef92173a |
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-1:000000000000 | 0:f1de39079243 |
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1 /* | |
2 * log.c -- logging routines | |
3 * | |
4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> | |
5 * | |
6 * Permission to use, copy, modify, and/or distribute this software for any | |
7 * purpose with or without fee is hereby granted, provided that the above | |
8 * copyright notice and this permission notice appear in all copies. | |
9 * | |
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
17 */ | |
18 | |
19 #include <assert.h> | |
20 #include <stdio.h> | |
21 #include <syslog.h> | |
22 | |
23 #include "log.h" | |
24 | |
25 /* TODO: replace. */ | |
26 static struct { | |
27 enum log_level verbosity; | |
28 } config = { | |
29 .verbosity = LOG_LEVEL_DEBUG | |
30 }; | |
31 | |
32 static int syslog_levels[] = { | |
33 [LOG_LEVEL_DEBUG] = LOG_DEBUG, | |
34 [LOG_LEVEL_INFO] = LOG_INFO, | |
35 [LOG_LEVEL_WARNING] = LOG_WARNING | |
36 }; | |
37 | |
38 void | |
39 log_open(const char *name) | |
40 { | |
41 openlog(name, 0, LOG_USER); | |
42 } | |
43 | |
44 void | |
45 log_write(enum log_level level, const char *fmt, ...) | |
46 { | |
47 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG); | |
48 assert(fmt); | |
49 | |
50 if (config.verbosity >= level) { | |
51 va_list ap; | |
52 | |
53 va_start(ap, fmt); | |
54 log_vwrite(level, fmt, ap); | |
55 va_end(ap); | |
56 } | |
57 } | |
58 | |
59 void | |
60 log_vwrite(enum log_level level, const char *fmt, va_list ap) | |
61 { | |
62 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG); | |
63 assert(fmt); | |
64 | |
65 char line[BUFSIZ]; | |
66 | |
67 vsnprintf(line, sizeof (line), fmt, ap); | |
68 syslog(syslog_levels[level], "%s", line); | |
69 } | |
70 | |
71 void | |
72 log_finish(void) | |
73 { | |
74 if (config.verbosity > 0) | |
75 closelog(); | |
76 } |