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#define _XOPEN_SOURCE 700 // for snprintf
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <wayland-server-core.h>
#include <wlr/util/log.h>
static bool colored = true;
static enum wlr_log_importance log_importance = WLR_ERROR;
static const char *verbosity_colors[] = {
[WLR_SILENT] = "",
[WLR_ERROR ] = "\x1B[1;31m",
[WLR_INFO ] = "\x1B[1;34m",
[WLR_DEBUG ] = "\x1B[1;30m",
};
static void log_stderr(enum wlr_log_importance verbosity, const char *fmt,
va_list args) {
if (verbosity > log_importance) {
return;
}
// prefix the time to the log message
struct tm result;
time_t t = time(NULL);
struct tm *tm_info = localtime_r(&t, &result);
char buffer[26];
// generate time prefix
strftime(buffer, sizeof(buffer), "%F %T - ", tm_info);
fprintf(stderr, "%s", buffer);
unsigned c = (verbosity < WLR_LOG_IMPORTANCE_LAST) ? verbosity : WLR_LOG_IMPORTANCE_LAST - 1;
if (colored && isatty(STDERR_FILENO)) {
fprintf(stderr, "%s", verbosity_colors[c]);
}
vfprintf(stderr, fmt, args);
if (colored && isatty(STDERR_FILENO)) {
fprintf(stderr, "\x1B[0m");
}
fprintf(stderr, "\n");
}
static wlr_log_func_t log_callback = log_stderr;
static void log_wl(const char *fmt, va_list args) {
static char wlr_fmt[1024];
int n = snprintf(wlr_fmt, sizeof(wlr_fmt), "[wayland] %s", fmt);
if (n > 0 && wlr_fmt[n - 1] == '\n') {
wlr_fmt[n - 1] = '\0';
}
_wlr_vlog(WLR_INFO, wlr_fmt, args);
}
void wlr_log_init(enum wlr_log_importance verbosity, wlr_log_func_t callback) {
if (verbosity < WLR_LOG_IMPORTANCE_LAST) {
log_importance = verbosity;
}
if (callback) {
log_callback = callback;
}
wl_log_set_handler_server(log_wl);
}
void _wlr_vlog(enum wlr_log_importance verbosity, const char *fmt, va_list args) {
log_callback(verbosity, fmt, args);
}
void _wlr_log(enum wlr_log_importance verbosity, const char *fmt, ...) {
va_list args;
va_start(args, fmt);
log_callback(verbosity, fmt, args);
va_end(args);
}
enum wlr_log_importance wlr_log_get_verbosity(void) {
return log_importance;
}
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