1 #define _POSIX_C_SOURCE 200112L
2 #include <signal.h>
3 #include <stdarg.h>
4 #include <stdio.h>
5 #include <stdlib.h>
6 #include <time.h>
7 #include <unistd.h>
8 #include "log.h"
9
10 static terminate_callback_t log_terminate = exit;
11
_sway_abort(const char * format,...)12 void _sway_abort(const char *format, ...) {
13 va_list args;
14 va_start(args, format);
15 _sway_vlog(SWAY_ERROR, format, args);
16 va_end(args);
17 log_terminate(EXIT_FAILURE);
18 }
19
_sway_assert(bool condition,const char * format,...)20 bool _sway_assert(bool condition, const char *format, ...) {
21 if (condition) {
22 return true;
23 }
24
25 va_list args;
26 va_start(args, format);
27 _sway_vlog(SWAY_ERROR, format, args);
28 va_end(args);
29
30 #ifndef NDEBUG
31 raise(SIGABRT);
32 #endif
33
34 return false;
35 }
36
37 static bool colored = true;
38 static sway_log_importance_t log_importance = SWAY_ERROR;
39 static struct timespec start_time = {-1, -1};
40
41 static const char *verbosity_colors[] = {
42 [SWAY_SILENT] = "",
43 [SWAY_ERROR ] = "\x1B[1;31m",
44 [SWAY_INFO ] = "\x1B[1;34m",
45 [SWAY_DEBUG ] = "\x1B[1;90m",
46 };
47
timespec_sub(struct timespec * r,const struct timespec * a,const struct timespec * b)48 static void timespec_sub(struct timespec *r, const struct timespec *a,
49 const struct timespec *b) {
50 const long NSEC_PER_SEC = 1000000000;
51 r->tv_sec = a->tv_sec - b->tv_sec;
52 r->tv_nsec = a->tv_nsec - b->tv_nsec;
53 if (r->tv_nsec < 0) {
54 r->tv_sec--;
55 r->tv_nsec += NSEC_PER_SEC;
56 }
57 }
58
init_start_time(void)59 static void init_start_time(void) {
60 if (start_time.tv_sec >= 0) {
61 return;
62 }
63 clock_gettime(CLOCK_MONOTONIC, &start_time);
64 }
65
sway_log_stderr(sway_log_importance_t verbosity,const char * fmt,va_list args)66 static void sway_log_stderr(sway_log_importance_t verbosity, const char *fmt,
67 va_list args) {
68 init_start_time();
69
70 if (verbosity > log_importance) {
71 return;
72 }
73
74 struct timespec ts = {0};
75 clock_gettime(CLOCK_MONOTONIC, &ts);
76 timespec_sub(&ts, &ts, &start_time);
77
78 fprintf(stderr, "%02d:%02d:%02d.%03ld ", (int)(ts.tv_sec / 60 / 60),
79 (int)(ts.tv_sec / 60 % 60), (int)(ts.tv_sec % 60),
80 ts.tv_nsec / 1000000);
81
82 unsigned c = (verbosity < SWAY_LOG_IMPORTANCE_LAST) ? verbosity :
83 SWAY_LOG_IMPORTANCE_LAST - 1;
84
85 if (colored && isatty(STDERR_FILENO)) {
86 fprintf(stderr, "%s", verbosity_colors[c]);
87 }
88
89 vfprintf(stderr, fmt, args);
90
91 if (colored && isatty(STDERR_FILENO)) {
92 fprintf(stderr, "\x1B[0m");
93 }
94 fprintf(stderr, "\n");
95 }
96
sway_log_init(sway_log_importance_t verbosity,terminate_callback_t callback)97 void sway_log_init(sway_log_importance_t verbosity, terminate_callback_t callback) {
98 init_start_time();
99
100 if (verbosity < SWAY_LOG_IMPORTANCE_LAST) {
101 log_importance = verbosity;
102 }
103 if (callback) {
104 log_terminate = callback;
105 }
106 }
107
_sway_vlog(sway_log_importance_t verbosity,const char * fmt,va_list args)108 void _sway_vlog(sway_log_importance_t verbosity, const char *fmt, va_list args) {
109 sway_log_stderr(verbosity, fmt, args);
110 }
111
_sway_log(sway_log_importance_t verbosity,const char * fmt,...)112 void _sway_log(sway_log_importance_t verbosity, const char *fmt, ...) {
113 va_list args;
114 va_start(args, fmt);
115 sway_log_stderr(verbosity, fmt, args);
116 va_end(args);
117 }
118