167 lines
3.4 KiB
C
167 lines
3.4 KiB
C
/*-*- Mode: C; c-basic-offset: 8 -*-*/
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "macro.h"
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#include "util.h"
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usec_t now(clockid_t clock) {
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struct timespec ts;
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assert_se(clock_gettime(clock, &ts) == 0);
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return timespec_load(&ts);
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}
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usec_t timespec_load(const struct timespec *ts) {
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assert(ts);
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return
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(usec_t) ts->tv_sec * USEC_PER_SEC +
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(usec_t) ts->tv_nsec / NSEC_PER_USEC;
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}
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struct timespec *timespec_store(struct timespec *ts, usec_t u) {
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assert(ts);
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ts->tv_sec = (time_t) (u / USEC_PER_SEC);
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ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC);
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return ts;
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}
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usec_t timeval_load(const struct timeval *tv) {
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assert(tv);
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return
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(usec_t) tv->tv_sec * USEC_PER_SEC +
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(usec_t) tv->tv_usec;
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}
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struct timeval *timeval_store(struct timeval *tv, usec_t u) {
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assert(tv);
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tv->tv_sec = (time_t) (u / USEC_PER_SEC);
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tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC);
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return tv;
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}
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bool endswith(const char *s, const char *postfix) {
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size_t sl, pl;
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assert(s);
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assert(postfix);
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sl = strlen(s);
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pl = strlen(postfix);
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if (sl < pl)
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return false;
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return memcmp(s + sl - pl, postfix, pl) == 0;
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}
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bool startswith(const char *s, const char *prefix) {
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size_t sl, pl;
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assert(s);
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assert(prefix);
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sl = strlen(s);
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pl = strlen(prefix);
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if (sl < pl)
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return false;
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return memcmp(s, prefix, pl) == 0;
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}
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int close_nointr(int fd) {
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assert(fd >= 0);
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for (;;) {
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int r;
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if ((r = close(fd)) >= 0)
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return r;
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if (errno != EINTR)
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return r;
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}
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}
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int parse_boolean(const char *v) {
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assert(v);
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if (!strcmp(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
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return 1;
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else if (!strcmp(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
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return 0;
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return -EINVAL;
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}
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int safe_atou(const char *s, unsigned *ret_u) {
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char *x = NULL;
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unsigned l;
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assert(s);
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assert(ret_u);
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errno = 0;
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l = strtoul(s, &x, 0);
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if (!x || *x || errno)
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return errno ? -errno : -EINVAL;
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if ((unsigned) l != l)
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return -ERANGE;
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*ret_u = (unsigned) l;
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return 0;
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}
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int safe_atoi(const char *s, int *ret_i) {
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char *x = NULL;
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int l;
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assert(s);
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assert(ret_i);
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errno = 0;
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l = strtol(s, &x, 0);
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if (!x || *x || errno)
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return errno ? -errno : -EINVAL;
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if ((int) l != l)
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return -ERANGE;
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*ret_i = (unsigned) l;
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return 0;
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}
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/* What is interpreted as whitespace? */
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#define WHITESPACE " \t\n"
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/* Split a string into words. */
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char *split_spaces(const char *c, size_t *l, char **state) {
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char *current;
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current = *state ? *state : (char*) c;
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if (!*current || *c == 0)
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return NULL;
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current += strspn(current, WHITESPACE);
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*l = strcspn(current, WHITESPACE);
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*state = current+*l;
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return (char*) current;
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}
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