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basic/time-util: add FORMAT_TIMESTAMP

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This uses the same idea of an anonyous buffer as ETHER_ADDR_TO_STR().
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2021-07-09 11:03:35 +02:00
parent e265fa8198
commit ae7c644c22
2 changed files with 34 additions and 9 deletions
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src/basic/time-util.h
+12 -7
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@@ -111,20 +111,25 @@ usec_t triple_timestamp_by_clock(triple_timestamp *ts, clockid_t clock);
usec_t timespec_load(const struct timespec *ts) _pure_;
nsec_t timespec_load_nsec(const struct timespec *ts) _pure_;
struct timespec *timespec_store(struct timespec *ts, usec_t u);
struct timespec *timespec_store_nsec(struct timespec *ts, nsec_t n);
struct timespec* timespec_store(struct timespec *ts, usec_t u);
struct timespec* timespec_store_nsec(struct timespec *ts, nsec_t n);
usec_t timeval_load(const struct timeval *tv) _pure_;
struct timeval *timeval_store(struct timeval *tv, usec_t u);
struct timeval* timeval_store(struct timeval *tv, usec_t u);
char *format_timestamp_style(char *buf, size_t l, usec_t t, TimestampStyle style);
char *format_timestamp_relative(char *buf, size_t l, usec_t t);
char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy);
char* format_timestamp_style(char *buf, size_t l, usec_t t, TimestampStyle style);
char* format_timestamp_relative(char *buf, size_t l, usec_t t);
char* format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy);
static inline char *format_timestamp(char *buf, size_t l, usec_t t) {
static inline char* format_timestamp(char *buf, size_t l, usec_t t) {
return format_timestamp_style(buf, l, t, TIMESTAMP_PRETTY);
}
/* Note: the lifetime of the compound literal is the immediately surrounding block,
* see C11 §6.5.2.5, and
* https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */
#define FORMAT_TIMESTAMP(t) format_timestamp((char[FORMAT_TIMESTAMP_MAX]){}, FORMAT_TIMESTAMP_MAX, t)
int parse_timestamp(const char *t, usec_t *usec);
int parse_sec(const char *t, usec_t *usec);