This is a fork of https://github.com/swaywm/sway that replaces pango with https://codeberg.org/dnkl/fcft for font rendering. Note: do not use the master branch; use one of the fontconfig branches
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#ifndef _SWAY_LOG_H
#define _SWAY_LOG_H
#include <stdbool.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
typedef enum {
SWAY_SILENT = 0,
SWAY_ERROR = 1,
SWAY_INFO = 2,
SWAY_DEBUG = 3,
SWAY_LOG_IMPORTANCE_LAST,
} sway_log_importance_t;
#ifdef __GNUC__
#define ATTRIB_PRINTF(start, end) __attribute__((format(printf, start, end)))
#else
#define ATTRIB_PRINTF(start, end)
#endif
void error_handler(int sig);
typedef void (*terminate_callback_t)(int exit_code);
// Will log all messages less than or equal to `verbosity`
// The `terminate` callback is called by `sway_abort`
void sway_log_init(sway_log_importance_t verbosity, terminate_callback_t terminate);
void _sway_log(sway_log_importance_t verbosity, const char *format, ...) ATTRIB_PRINTF(2, 3);
void _sway_vlog(sway_log_importance_t verbosity, const char *format, va_list args) ATTRIB_PRINTF(2, 0);
void _sway_abort(const char *filename, ...) ATTRIB_PRINTF(1, 2);
bool _sway_assert(bool condition, const char* format, ...) ATTRIB_PRINTF(2, 3);
#ifdef SWAY_REL_SRC_DIR
// strip prefix from __FILE__, leaving the path relative to the project root
#define _SWAY_FILENAME ((const char *)__FILE__ + sizeof(SWAY_REL_SRC_DIR) - 1)
#else
#define _SWAY_FILENAME __FILE__
#endif
#define sway_log(verb, fmt, ...) \
_sway_log(verb, "[%s:%d] " fmt, _SWAY_FILENAME, __LINE__, ##__VA_ARGS__)
#define sway_vlog(verb, fmt, args) \
_sway_vlog(verb, "[%s:%d] " fmt, _SWAY_FILENAME, __LINE__, args)
#define sway_log_errno(verb, fmt, ...) \
sway_log(verb, fmt ": %s", ##__VA_ARGS__, strerror(errno))
#define sway_abort(FMT, ...) \
_sway_abort("[%s:%d] " FMT, _SWAY_FILENAME, __LINE__, ##__VA_ARGS__)
#define sway_assert(COND, FMT, ...) \
_sway_assert(COND, "[%s:%d] %s:" FMT, _SWAY_FILENAME, __LINE__, __PRETTY_FUNCTION__, ##__VA_ARGS__)
#endif