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
82
|
/*
* Logging functions used by Xwayback and wayback-session.
*
* SPDX-License-Identifier: MIT
*/
#include "wayback_log.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static enum wayback_log_level logging_max_verbosity = LOG_INFO;
static char *logging_context = "wayback";
static bool logging_use_color = true;
static const char *log_colors[] = {
[LOG_ERROR] = "\x1b[1;31m",
[LOG_WARN] = "\x1b[1;33m",
[LOG_INFO] = "\x1b[1;37m",
[LOG_DEBUG] = "\x1b[1;39m]",
};
static const char *log_prefix[] = {
[LOG_ERROR] = "[ERROR]",
[LOG_WARN] = "[WARN]",
[LOG_INFO] = "[INFO]",
[LOG_DEBUG] = "[DEBUG]",
};
static void default_log_func(enum wayback_log_level verbosity, const char *fmt, va_list args)
{
if (verbosity > logging_max_verbosity)
return;
unsigned verbosity_lvl = (verbosity < LOG_LAST) ? verbosity : LOG_LAST - 1;
if (logging_use_color)
fprintf(stderr, "%s", log_colors[verbosity_lvl]);
fprintf(stderr, "%s (%s): ", log_prefix[verbosity_lvl], logging_context);
vfprintf(stderr, fmt, args);
if (logging_use_color)
fprintf(stderr, "\x1b[0m");
fprintf(stderr, "\n");
}
static wayback_log_func_t logging_func = default_log_func;
void wayback_log_init(char *ctx,
enum wayback_log_level max_verbosity,
wayback_log_func_t log_function)
{
if (ctx)
logging_context = ctx;
logging_max_verbosity = max_verbosity;
if (log_function)
logging_func = log_function;
char *no_color = getenv("NO_COLOR");
if ((no_color != NULL && no_color[0] != '\0') || !isatty(STDERR_FILENO))
logging_use_color = false;
}
void wayback_vlog(enum wayback_log_level verbosity, const char *format, va_list args)
{
logging_func(verbosity, format, args);
}
void wayback_log(enum wayback_log_level verbosity, const char *format, ...)
{
va_list args;
va_start(args, format);
logging_func(verbosity, format, args);
va_end(args);
}
|
