wlroots/common/log.c

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C
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#define _POSIX_C_SOURCE 1
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include "wlr/common/log.h"
#include "common/log.h"
static bool colored = true;
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static log_callback_t log_callback = wlr_log_stderr;
static const char *verbosity_colors[] = {
[L_SILENT] = "",
[L_ERROR ] = "\x1B[1;31m",
[L_INFO ] = "\x1B[1;34m",
[L_DEBUG ] = "\x1B[1;30m",
};
void wlr_log_init(log_callback_t callback) {
log_callback = callback;
}
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void wlr_log_stderr(log_importance_t verbosity, const char *fmt, va_list args) {
// prefix the time to the log message
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struct tm result;
time_t t = time(NULL);
struct tm *tm_info = localtime_r(&t, &result);
char buffer[26];
// generate time prefix
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strftime(buffer, sizeof(buffer), "%F %T - ", tm_info);
fprintf(stderr, "%s", buffer);
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unsigned c = (verbosity < L_LAST) ? verbosity : L_LAST - 1;
if (colored && isatty(STDERR_FILENO)) {
fprintf(stderr, "%s", verbosity_colors[c]);
}
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vfprintf(stderr, fmt, args);
if (colored && isatty(STDERR_FILENO)) {
fprintf(stderr, "\x1B[0m");
}
fprintf(stderr, "\n");
}
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void _wlr_vlog(log_importance_t verbosity, const char *fmt, va_list args) {
log_callback(verbosity, fmt, args);
}
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void _wlr_log(log_importance_t verbosity, const char *fmt, ...) {
va_list args;
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va_start(args, fmt);
log_callback(verbosity, fmt, args);
va_end(args);
}