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#include "log.h"
static struct {
char *name;
int set;
FILE *fps[MAX_LOGFILES];
int nfps;
int stder;
#ifdef COLOR
char *color;
#endif
} log_levels[LOG_LEVEL_COUNT] = {
[LOG_DEBUG] = {
.name = "DEBUG", .set = 1, .fps = {0}, .nfps = 0, .stder = 1,
#ifdef COLOR
.color = "\e[38;2;255;255;0m"
#endif
},
[LOG_INFO] = {
.name = "INFO", .set = 1, .fps = {0}, .nfps = 0, .stder = 1,
#ifdef COLOR
.color = "\e[38;2;0;224;255m"
#endif
},
[LOG_WARN] = {
.name = "WARN", .set = 1, .fps = {0}, .nfps = 0, .stder = 1,
#ifdef COLOR
.color = "\e[38;2;255;165;0m"
#endif
},
[LOG_ERROR] = {
.name = "ERROR", .set = 1, .fps = {0}, .nfps = 0, .stder = 1,
#ifdef COLOR
.color = "\e[38;2;255;0;0m"
#endif
}
};
static char time_format[16] = "%T";
static int nanosecond_precision = 0;
int log_set_stderr(int level, int of){
if(level >= 0 && level < LOG_LEVEL_COUNT){
return log_levels[level].stder = of;
}
return 0;
}
void log_set_level(int level, int of){
if(level >= 0 && level < LOG_LEVEL_COUNT){
log_levels[level].set = of;
}
}
int log_add_fp(int level, FILE *fp){
if(level >= 0 && level < LOG_LEVEL_COUNT && log_levels[level].nfps < MAX_LOGFILES){
log_levels[level].fps[log_levels[level].nfps++] = fp;
return 0;
}
return 1;
}
int log_remove_fp(int level, FILE *fp){
if(level < 0 || level >= LOG_LEVEL_COUNT){
return 1;
}
for(int i = 0; i < log_levels[level].nfps; i++){
if(log_levels[level].fps[i] == fp){
for(int j = i; j < MAX_LOGFILES-1; j++){
log_levels[level].fps[j] = log_levels[level].fps[j+1];
}
log_levels[level].fps[log_levels[level].nfps--] = NULL;
return 0;
}
}
return 1;
}
void log_time_format(char *tf){
strncpy(time_format, tf, sizeof(time_format)/sizeof(time_format[0]));
}
int log_nanoseconds(int n){
return nanosecond_precision = n%10;
}
void log_message(int level, char *file, int line, char *fmt, ...){
struct timespec ts;
clock_gettime(CLOCK_REALTIME, &ts);
if(level >= 0 && level < LOG_LEVEL_COUNT && log_levels[level].set){
struct tm *lt = localtime(&ts.tv_sec);
char t[32] = {0};
strftime(t, 31, time_format, lt);
char ns[9] = {0};
snprintf(ns, nanosecond_precision+1, "%ld", ts.tv_nsec);
char msg[MSG_LIMIT] = {0};
int written = snprintf(msg, MSG_LIMIT-2,
#ifdef PID
"[%d] "
#endif
"%s%s%s%s%s%s%s\t",
#ifdef PID
getpid(),
#endif
t, nanosecond_precision ? "." : "", ns,
t[0] != '\0' ? " " : "",
#ifdef COLOR
log_levels[level].color,
#else
"",
#endif
log_levels[level].name, "\e[0m"
);
if(level == LOG_DEBUG){
written += snprintf(msg+written, MSG_LIMIT-2-written, "%s:%d: ",file, line);
}
va_list args;
va_start(args, fmt);
written += vsnprintf(msg+written, MSG_LIMIT-2-written, fmt, args);
msg[written] = '\n';
if(log_levels[level].stder) fputs(msg, stderr);
for(int i = 0; i < log_levels[level].nfps; i++){
if(log_levels[level].fps[i] != NULL)
fputs(msg, log_levels[level].fps[i++]);
}
}
}
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