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#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include "log.h"
#include "macros.h"
#include "misc.h"
typedef enum colour colour;
enum colour {
BLACK,
RED,
GREEN,
YELLOW,
BLUE,
MAGENTA,
CYAN,
WHITE,
NUM_COLOURS,
RESET = NUM_COLOURS,
};
static const char *print_ansi_colour(colour colour, int is_bg, int is_bright) {
if (colour < NUM_COLOURS) {
static char str[const_strlen("\x1B[100m")+1] = {0};
int colour_code = colour + 30;
if (is_bg) {
colour_code += 10;
}
if (is_bright) {
colour_code += 60;
}
snprintf(str, sizeof(str)-1, "\x1B[%dm", colour_code);
return str;
} else {
return "\x1B[0m";
}
}
static const char *print_priority_colour(int priority) {
colour colour = RESET;
int is_bg = 0;
int is_bright = 0;
switch (priority) {
case LOG_ERR : colour = RED; break;
case LOG_WARNING: colour = YELLOW; is_bright = 1; break;
case LOG_NOTICE : colour = CYAN; break;
case LOG_INFO : colour = MAGENTA; break;
case LOG_DEBUG : colour = GREEN; break;
default : break;
}
return print_ansi_colour(colour, is_bg, is_bright);
}
static const char *priority_to_str(int priority) {
switch (priority) {
case LOG_ERR : return "ERROR";
case LOG_WARNING: return "WARNING";
case LOG_NOTICE : return "NOTICE";
case LOG_INFO : return "INFO";
case LOG_DEBUG : return "DEBUG";
default : return "UNKNOWN";
}
}
void vprintlog(log_output output_type, int priority, const char *fmt, va_list args) {
const char *priority_str = priority_to_str(priority);
char *buf = calloc(vformat_len_copy(fmt, args)+1, sizeof(char));
vsprintf(buf, fmt, args);
switch (output_type) {
case LOG_OUT_SYSLOG: {
syslog(priority, "%s: %s", priority_str, buf);
break;
}
case LOG_OUT_STDERR:
case LOG_OUT_STDOUT: {
FILE *output = (output_type == LOG_OUT_STDOUT) ? stdout : stderr;
fprintf(output, "%s%s: %s\x1B[0m\n", print_priority_colour(priority), priority_str, buf);
break;
}
default:
break;
}
free(buf);
}
void printlog(log_output output_type, int priority, const char *fmt, ...) {
va_list args;
va_start(args, fmt);
vprintlog(output_type, priority, fmt, args);
va_end(args);
}
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