alejandrogs73
cb051ead76
git-subtree-dir: suckless/clipmenu git-subtree-split: e0ec3bc6608ecc70ed17e8da76e27bf90b1e8e90
111 lines
5 KiB
C
111 lines
5 KiB
C
#ifndef CM_UTIL_H
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#define CM_UTIL_H
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#include <dirent.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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struct selection;
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#define _drop_(x) __attribute__((__cleanup__(drop_##x)))
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#define _must_use_ __attribute__((warn_unused_result))
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#define _nonnull_ __attribute__((nonnull))
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#define _nonnull_n_(...) __attribute__((nonnull(__VA_ARGS__)))
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#define _noreturn_ __attribute__((noreturn))
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#define _packed_ __attribute__((packed))
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#define _printf_(a, b) __attribute__((__format__(printf, a, b)))
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#define _unused_ __attribute__((__unused__))
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#ifndef __cplusplus
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#define static_assert _Static_assert
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#endif
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#define UINT64_MAX_STRLEN 20 // (1 << 64) - 1 is 20 digits wide
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#define streq(a, b) (strcmp((a), (b)) == 0)
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#define strceq(a, b) (strcasecmp((a), (b)) == 0)
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#define strnull(s) (s) ? (s) : "[null]"
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#define arrlen(x) \
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(__builtin_choose_expr( \
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!__builtin_types_compatible_p(typeof(x), typeof(&*(x))), \
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sizeof(x) / sizeof((x)[0]), (void)0 /* decayed, compile error */))
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#define _msg(level, fmt, ...) fprintf(stderr, level ": " fmt, ##__VA_ARGS__)
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#define warn(fmt, ...) _msg("WARN", fmt, ##__VA_ARGS__)
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#define _die(dump, fmt, ...) \
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do { \
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_msg("FATAL", fmt, ##__VA_ARGS__); \
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if (dump) { \
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abort(); \
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} \
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exit(1); \
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} while (0)
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#define die(fmt, ...) _die(0, fmt, ##__VA_ARGS__)
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#define die_on(cond, fmt, ...) \
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do { \
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if (unlikely(cond)) { \
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die(fmt, ##__VA_ARGS__); \
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} \
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} while (0)
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#define expect(x) \
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do { \
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if (!likely(x)) { \
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_die(1, "!(%s) at %s:%s:%d\n", #x, __FILE__, __func__, __LINE__); \
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} \
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} while (0)
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#define dbg(fmt, ...) \
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do { \
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if (debug_mode_enabled()) { \
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fprintf(stderr, "%s:%ld:%s:%s:%d: " fmt, prog_name, \
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(long)getpid(), __FILE__, __func__, __LINE__, \
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##__VA_ARGS__); \
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} \
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} while (0)
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void _nonnull_ write_safe(int fd, const char *buf, size_t count);
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size_t _nonnull_ read_safe(int fd, char *buf, size_t count);
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size_t _printf_(3, 4)
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snprintf_safe(char *buf, size_t len, const char *fmt, ...);
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void run_clipserve(uint64_t hash, const struct selection *selections);
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uint64_t _nonnull_ fnv1a_64_hash(const char *buf);
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/**
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* __attribute__((cleanup)) functions
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*/
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#define DEFINE_DROP_FUNC_PTR(type, func) \
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static inline void drop_##func(type *p) { func(p); }
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#define DEFINE_DROP_FUNC(type, func) \
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static inline void drop_##func(type *p) { \
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if (*p) \
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func(*p); \
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}
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#define DEFINE_DROP_FUNC_VOID(func) \
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static inline void drop_##func(void *p) { \
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void **pp = p; \
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if (*pp) \
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func(*pp); \
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}
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static inline void drop_close(int *fd) {
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if (*fd >= 0) {
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close(*fd);
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}
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}
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DEFINE_DROP_FUNC_VOID(free)
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DEFINE_DROP_FUNC(FILE *, fclose)
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DEFINE_DROP_FUNC(DIR *, closedir)
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int _must_use_ negative_errno(void);
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int _nonnull_ str_to_uint64(const char *input, uint64_t *output);
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int _nonnull_ str_to_hex64(const char *input, uint64_t *output);
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bool debug_mode_enabled(void);
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#endif
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