+#define SGR(s) ("\x1b[" s "m")
+
+typedef enum color_t {
+ RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, GRAY,
+ RESET, // not really a color
+} color_t;
+
+typedef struct priority_disp_t {
+ const char *name;
+ color_t color;
+} priority_disp_t;
+
+static const priority_disp_t priorities[] = {
+ [LOG_EMERG] = {"EMERGENCY", MAGENTA},
+ [LOG_ALERT] = {"ALERT", MAGENTA},
+ [LOG_CRIT] = {"CRITICAL", MAGENTA},
+ [LOG_ERR] = {"ERROR", RED},
+ [LOG_WARNING] = {"WARNING", YELLOW},
+ [LOG_NOTICE] = {"NOTICE", CYAN},
+ [LOG_INFO] = {"INFO", GREEN},
+ [LOG_DEBUG] = {"DEBUG", BLUE},
+};
+
+static const char *ansi_codes[] = {
+ [RED] = SGR("31;1"),
+ [GREEN] = SGR("32;1"),
+ [YELLOW] = SGR("33;1"),
+ [BLUE] = SGR("34;1"),
+ [MAGENTA] = SGR("35;1"),
+ [CYAN] = SGR("36;1"),
+ [WHITE] = SGR("37;1"),
+ [GRAY] = SGR("90"),
+ [RESET] = SGR("0"),
+};
+
+static priority_disp_t get_priority(int priority) {
+ static const priority_disp_t unknown = {"UNKNOWN", WHITE};
+
+ if(priority >= LOG_EMERG && priority <= LOG_DEBUG) {
+ return priorities[priority];
+ } else {
+ return unknown;
+ }
+}
+
+// Formats current time to the second.
+// Reuses result so repeated calls within the same second are more efficient.
+static const char *current_time_str(void) {
+ static char timestr[sizeof("2000-12-31 12:34:56")] = "";
+ static time_t last_time = 0;
+
+ if(!now.tv_sec) {
+ gettimeofday(&now, NULL);
+ }
+
+ time_t now_sec = now.tv_sec;
+
+ if(!*timestr || now_sec != last_time) {
+ last_time = now_sec;
+ strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&now_sec));
+ }
+
+ return timestr;
+}
+
+// Format log entry with time, log level, and (possibly) colors, remembering if it was colorized.
+// Returns true if buffer has been changed.
+static bool format_pretty(char *buf, size_t buflen, int prio, const char *message, bool colorize, bool *colorized) {
+ // If we already wrote to buffer, and its colorization matches, we're done here
+ if(*buf && colorize == *colorized) {
+ return false;
+ }
+
+ // Otherwise, remember current colorization for future comparisons
+ *colorized = colorize;
+
+ priority_disp_t priority = get_priority(prio);
+ const char *color = "", *reset = "", *timecol = "";
+
+ if(colorize) {
+ color = ansi_codes[priority.color];
+ reset = ansi_codes[RESET];
+ timecol = ansi_codes[GRAY];
+ }
+
+ const char *timestr = current_time_str();
+ snprintf(buf, buflen, "%s%s %s%-7s%s %s", timecol, timestr, color, priority.name, reset, message);
+ return true;
+}
+
+static bool should_log(debug_t level) {
+ return (level <= debug_level && logmode != LOGMODE_NULL) || logcontrol;
+}
+
+static void real_logger(debug_t level, int priority, const char *message) {
+ char pretty[1024] = "";
+ bool pretty_colorized = false;
+ static bool suppress = false;
+
+ if(suppress) {
+ return;
+ }
+
+ if(level <= debug_level) {
+ switch(logmode) {