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#define _POSIX_C_SOURCE 199506L
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "log.h"
static terminate_callback_t log_terminate = exit;
void _sway_abort(const char *format, ...) {
va_list args;
va_start(args, format);
_sway_vlog(SWAY_ERROR, format, args);
va_end(args);
log_terminate(EXIT_FAILURE);
}
bool _sway_assert(bool condition, const char *format, ...) {
if (condition) {
return true;
}
va_list args;
va_start(args, format);
_sway_vlog(SWAY_ERROR, format, args);
va_end(args);
#ifndef NDEBUG
raise(SIGABRT);
#endif
return false;
}
static bool colored = true;
static sway_log_importance_t log_importance = SWAY_ERROR;
static const char *verbosity_colors[] = {
[SWAY_SILENT] = "",
[SWAY_ERROR ] = "\x1B[1;31m",
[SWAY_INFO ] = "\x1B[1;34m",
[SWAY_DEBUG ] = "\x1B[1;30m",
};
static void sway_log_stderr(sway_log_importance_t verbosity, const char *fmt,
va_list args) {
if (verbosity > log_importance) {
return;
}
// 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 < SWAY_LOG_IMPORTANCE_LAST) ? verbosity :
SWAY_LOG_IMPORTANCE_LAST - 1;
if (colored && isatty(STDERR_FILENO)) {
fprintf(stderr, "%s", verbosity_colors[c]);
}
vfprintf(stderr, fmt, args);
if (colored && isatty(STDERR_FILENO)) {
fprintf(stderr, "\x1B[0m");
}
fprintf(stderr, "\n");
}
void sway_log_init(sway_log_importance_t verbosity, terminate_callback_t callback) {
if (verbosity < SWAY_LOG_IMPORTANCE_LAST) {
log_importance = verbosity;
}
if (callback) {
log_terminate = callback;
}
}
void _sway_vlog(sway_log_importance_t verbosity, const char *fmt, va_list args) {
sway_log_stderr(verbosity, fmt, args);
}
void _sway_log(sway_log_importance_t verbosity, const char *fmt, ...) {
va_list args;
va_start(args, fmt);
sway_log_stderr(verbosity, fmt, args);
va_end(args);
}
// strips the path prefix from filepath
// will try to strip SWAY_SRC_DIR as well as a relative src dir
// e.g. '/src/build/sway/util/log.c' and
// '../util/log.c' will both be stripped to
// 'util/log.c'
const char *_sway_strip_path(const char *filepath) {
static int srclen = sizeof(SWAY_SRC_DIR);
if (strstr(filepath, SWAY_SRC_DIR) == filepath) {
filepath += srclen;
} else if (*filepath == '.') {
while (*filepath == '.' || *filepath == '/') {
++filepath;
}
}
return filepath;
}
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