1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
#include "logger.h"
G_DEFINE_INTERFACE (Logger, logger, G_TYPE_INVALID);
static void
logger_logv_default (Logger *self, GLogLevelFlags log_level, const gchar *format, va_list ap);
static void
logger_default_init (LoggerInterface *iface)
{
iface->logv = &logger_logv_default;
}
gint
logger_logprefix (Logger *self, gchar *buf, gulong buflen)
{
g_return_val_if_fail (IS_LOGGER (self), -1);
return LOGGER_GET_INTERFACE (self)->logprefix (self, buf, buflen);
}
void
logger_logv (Logger *self, GLogLevelFlags log_level, const gchar *format, va_list ap)
{
g_return_if_fail (IS_LOGGER (self));
LOGGER_GET_INTERFACE (self)->logv (self, log_level, format, ap);
}
void
logger_logv_default (Logger *self, GLogLevelFlags log_level, const gchar *format, va_list ap)
{
va_list ap_copy;
gint tmp;
/* figure out how long the prefix is */
tmp = logger_logprefix (self, NULL, 0);
if (tmp < 0)
{
g_error ("failed to get log prefix");
return;
}
/* print the prefix to a variable length array (to avoid malloc) */
gchar pfx[tmp + 1];
tmp = logger_logprefix (self, pfx, sizeof(pfx));
if (tmp < 0)
{
g_error ("failed to get log prefix");
return;
}
/* figure out how long the formatted message is */
va_copy (ap_copy, ap);
tmp = g_vsnprintf (NULL, 0, format, ap_copy);
va_end (ap_copy);
if (tmp < 0)
{
g_error ("failed to format log message");
return;
}
/* print the message to a variable length array (to avoid malloc) */
gchar msg[tmp+1];
tmp = g_vsnprintf (msg, sizeof(msg), format, ap);
if (tmp < 0)
{
g_error ("failed to format log message");
return;
}
/* log the message with the prefix */
g_log (G_LOG_DOMAIN, log_level, "%s%s", pfx, msg);
}
void
logger_log (Logger *self, GLogLevelFlags log_level, const gchar *format, ...)
{
va_list ap;
va_start (ap, format);
logger_logv (self, log_level, format, ap);
va_end (ap);
}
|