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miraclecast/src/shared/shl_util.h
David Herrmann bc69f5b27b shl: update shl files
Sync files with upstream libshl. See upstream commits for changes/fixes.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
2014-03-14 19:44:53 +01:00

163 lines
3.9 KiB
C

/*
* SHL - Utility Helpers
*
* Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
* Dedicated to the Public Domain
*/
/*
* Utility Helpers
*/
#ifndef SHL_UTIL_H
#define SHL_UTIL_H
#include <errno.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "shl_macro.h"
/* strict atoi */
int shl_ctoi(char ch, unsigned int base);
int shl_atoi_ulln(const char *str,
size_t len,
unsigned int base,
const char **next,
unsigned long long *out);
int shl_atoi_uln(const char *str,
size_t len,
unsigned int base,
const char **next,
unsigned long *out);
int shl_atoi_un(const char *str,
size_t len,
unsigned int base,
const char **next,
unsigned int *out);
int shl_atoi_zn(const char *str,
size_t len,
unsigned int base,
const char **next,
size_t *out);
static inline int shl_atoi_ull(const char *str,
unsigned int base,
const char **next,
unsigned long long *out)
{
return shl_atoi_ulln(str, strlen(str), base, next, out);
}
static inline int shl_atoi_ul(const char *str,
unsigned int base,
const char **next,
unsigned long *out)
{
return shl_atoi_uln(str, strlen(str), base, next, out);
}
static inline int shl_atoi_u(const char *str,
unsigned int base,
const char **next,
unsigned int *out)
{
return shl_atoi_un(str, strlen(str), base, next, out);
}
static inline int shl_atoi_z(const char *str,
unsigned int base,
const char **next,
size_t *out)
{
return shl_atoi_zn(str, strlen(str), base, next, out);
}
/* greedy alloc */
void *shl_greedy_realloc(void **mem, size_t *size, size_t need);
void *shl_greedy_realloc0(void **mem, size_t *size, size_t need);
void *shl_greedy_realloc_t(void **arr, size_t *cnt, size_t need, size_t ts);
void *shl_greedy_realloc0_t(void **arr, size_t *cnt, size_t need, size_t ts);
#define SHL_GREEDY_REALLOC_T(array, count, need) \
shl_greedy_realloc_t((void**)&(array), &count, need, sizeof(*(array)))
#define SHL_GREEDY_REALLOC0_T(array, count, need) \
shl_greedy_realloc0_t((void**)&(array), &count, need, sizeof(*(array)))
/* string helpers */
char *shl_strcat(const char *first, const char *second);
_shl_sentinel_ char *shl_strjoin(const char *first, ...);
int shl_strsplit_n(const char *str, size_t len, const char *sep, char ***out);
int shl_strsplit(const char *str, const char *sep, char ***out);
static inline char *shl_startswith(const char *str, const char *prefix)
{
if (!strncmp(str, prefix, strlen(prefix)))
return (char*)str + strlen(prefix);
else
return NULL;
}
/* strv */
void shl_strv_free(char **strv);
static inline void shl_strv_freep(char ***strv)
{
shl_strv_free(*strv);
}
#define _shl_strv_free_ _shl_cleanup_(shl_strv_freep)
/* quoted strings */
char shl_qstr_unescape_char(char c);
void shl_qstr_decode_n(char *str, size_t length);
int shl_qstr_tokenize_n(const char *str, size_t length, char ***out);
int shl_qstr_tokenize(const char *str, char ***out);
int shl_qstr_join(char **strv, char **out);
/* mkdir */
int shl_mkdir_p(const char *path, mode_t mode);
int shl_mkdir_p_prefix(const char *prefix, const char *path, mode_t mode);
/* time */
uint64_t shl_now(clockid_t clock);
/* ratelimit */
struct shl_ratelimit {
uint64_t interval;
uint64_t begin;
unsigned burst;
unsigned num;
};
#define SHL_RATELIMIT_DEFINE(_name, _interval, _burst) \
struct shl_ratelimit _name = { (_interval), (_burst), 0, 0 }
#define SHL_RATELIMIT_INIT(_v, _interval, _burst) do { \
struct shl_ratelimit *_r = &(_v); \
_r->interval = (_interval); \
_r->burst = (_burst); \
_r->num = 0; \
_r->begin = 0; \
} while (false)
#define SHL_RATELIMIT_RESET(_v) do { \
struct shl_ratelimit *_r = &(_v); \
_r->num = 0; \
_r->begin = 0; \
} while (false)
bool shl_ratelimit_test(struct shl_ratelimit *r);
#endif /* SHL_UTIL_H */