Mercurial > sci

comparison libsci/log.c @ 33:1d0ddf9e6efd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
misc: general documentation
author David Demelier <markand@malikania.fr>
date Thu, 04 Aug 2022 16:47:10 +0200
parents lib/log.c@081e1c258e64
children 835d52f72786
comparison
equal deleted inserted replaced
32:081e1c258e64 33:1d0ddf9e6efd
1 /*
2 * log.c -- logging routines
3 *
4 * Copyright (c) 2020-2022 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 #include <time.h>
23
24 #include "log.h"
25
26 /* TODO: replace. */
27 static struct {
28 enum log_level verbosity;
29 } config = {
30 .verbosity = LOG_LEVEL_DEBUG
31 };
32
33 static int syslog_levels[] = {
34 [LOG_LEVEL_DEBUG] = LOG_DEBUG,
35 [LOG_LEVEL_INFO] = LOG_INFO,
36 [LOG_LEVEL_WARNING] = LOG_WARNING
37 };
38
39 static const char * const levelsyms[] = {
40 [LOG_LEVEL_DEBUG] = "D",
41 [LOG_LEVEL_INFO] = "I",
42 [LOG_LEVEL_WARNING] = "W"
43 };
44
45 void
46 log_open(const char *name)
47 {
48 openlog(name, 0, LOG_USER);
49 }
50
51 void
52 log_write(enum log_level level, const char *fmt, ...)
53 {
54 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG);
55 assert(fmt);
56
57 if (config.verbosity >= level) {
58 va_list ap;
59
60 va_start(ap, fmt);
61 log_vwrite(level, fmt, ap);
62 va_end(ap);
63 }
64 }
65
66 void
67 log_vwrite(enum log_level level, const char *fmt, va_list ap)
68 {
69 assert(level >= LOG_LEVEL_WARNING && level <= LOG_LEVEL_DEBUG);
70 assert(fmt);
71
72 char line[BUFSIZ] = {0}, timebuf[32] = {0};
73 time_t timestamp = time(NULL);
74 struct tm *tm = localtime(&timestamp);
75
76 vsnprintf(line, sizeof (line), fmt, ap);
77 syslog(syslog_levels[level], "%s", line);
78
79 strftime(timebuf, sizeof (timebuf), "%F %T", tm);
80 printf("%s %s %s\n", timebuf, levelsyms[level], line);
81 }
82
83 void
84 log_finish(void)
85 {
86 if (config.verbosity > 0)
87 closelog();
88 }