swayfx/common/log.c
Manuel Stoeckl 2dc4978d8a Use -fmacro-prefix-map to strip build path
Because meson does not provide a simple way to get the relative build
path, it is computed with a pair of foreach loops. As meson does not
have a simple way to compute string length (except via underscorify
and 63 split operations), the build script uses a shell command
instead.

If the compiler does not suppot -fmacro-prefix-map, then fall back
to passing in the relative path prefix, and use its length to offset
the uses of __FILE__ in log messages so that the build path is at
least still not included in the logs. This is significantly more
efficient than calling _sway_strip_path.
2019-07-15 16:35:50 -04:00

96 lines
2.1 KiB
C

#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);
}