swaylock/log.c

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1.4 KiB
C
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#define _POSIX_C_SOURCE 199506L
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "log.h"
static enum log_importance log_importance = LOG_ERROR;
static const char *verbosity_colors[] = {
[LOG_SILENT] = "",
[LOG_ERROR ] = "\x1B[1;31m",
[LOG_INFO ] = "\x1B[1;34m",
[LOG_DEBUG ] = "\x1B[1;30m",
};
void swaylock_log_init(enum log_importance verbosity) {
if (verbosity < LOG_IMPORTANCE_LAST) {
log_importance = verbosity;
}
}
void _swaylock_log(enum log_importance verbosity, const char *fmt, ...) {
if (verbosity > log_importance) {
return;
}
va_list args;
va_start(args, fmt);
// 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 < LOG_IMPORTANCE_LAST)
? verbosity : LOG_IMPORTANCE_LAST - 1;
if (isatty(STDERR_FILENO)) {
fprintf(stderr, "%s", verbosity_colors[c]);
}
vfprintf(stderr, fmt, args);
if (isatty(STDERR_FILENO)) {
fprintf(stderr, "\x1B[0m");
}
fprintf(stderr, "\n");
va_end(args);
}
const char *_swaylock_strip_path(const char *filepath) {
if (*filepath == '.') {
while (*filepath == '.' || *filepath == '/') {
++filepath;
}
}
return filepath;
}