mirror of https://git.lain.church/x3/caniadd.git
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
#define _XOPEN_SOURCE
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "util.h"
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void util_byte2hex(const uint8_t* bytes, size_t bytes_len,
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bool uppercase, char* out)
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{
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const char* hex = (uppercase) ? "0123456789ABCDEF" : "0123456789abcdef";
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for (size_t i = 0; i < bytes_len; i++) {
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*out++ = hex[bytes[i] >> 4];
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*out++ = hex[bytes[i] & 0xF];
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}
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*out = '\0';
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}
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void util_hex2byte(const char *str, uint8_t* out_bytes)
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{
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while (*str) {
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if (*str >= '0' && *str <= '9')
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*out_bytes = (*str - '0') << 4;
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if (*str >= 'A' && *str <= 'F')
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*out_bytes = (*str - ('A' - 10)) << 4;
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else
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*out_bytes = (*str - ('a' - 10)) << 4;
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str++;
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if (*str >= '0' && *str <= '9')
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*out_bytes |= (*str - '0');
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if (*str >= 'A' && *str <= 'F')
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*out_bytes |= (*str - ('A' - 10));
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else
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*out_bytes |= (*str - ('a' - 10));
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out_bytes++;
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str++;
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}
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}
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const char *util_get_home()
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{
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const char *home_env = getenv("HOME");
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return home_env; /* TODO this can be null, use other methods as fallback */
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}
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char *util_basename(const char *fullpath)
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{
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char *name_part = strrchr(fullpath, '/');
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if (name_part)
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name_part++;
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else
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name_part = (char*)fullpath;
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return name_part;
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}
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uint64_t util_timespec_diff(const struct timespec *past,
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const struct timespec *future)
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{
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int64_t sdiff = future->tv_sec - past->tv_sec;
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int64_t nsdiff = future->tv_nsec - past->tv_nsec;
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return sdiff * 1000 + (nsdiff / 1000000);
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}
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uint64_t util_iso2unix(const char *isotime)
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{
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struct tm tm = {0};
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char *ms = strptime(isotime, "%Y-%m-%d", &tm);
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if (!ms || (*ms != '\0' && *ms != ' ' && *ms != 'T'))
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return 0;
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if (*ms == '\0')
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ms = "T00:00:00";
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ms = strptime(ms + 1, "%H:%M", &tm);
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if (!ms || (*ms != '\0' && *ms != ':'))
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return 0;
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if (*ms == '\0')
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ms = ":00";
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ms = strptime(ms + 1, "%S", &tm);
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if (!ms)
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return 0;
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return mktime(&tm);
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}
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