diff options
Diffstat (limited to 'libnetdata/datetime/rfc3339.c')
-rw-r--r-- | libnetdata/datetime/rfc3339.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/libnetdata/datetime/rfc3339.c b/libnetdata/datetime/rfc3339.c deleted file mode 100644 index 157e340d..00000000 --- a/libnetdata/datetime/rfc3339.c +++ /dev/null @@ -1,135 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "../libnetdata.h" - -#include "rfc3339.h" - -size_t rfc3339_datetime_ut(char *buffer, size_t len, usec_t now_ut, size_t fractional_digits, bool utc) { - if (!buffer || len == 0) - return 0; - - time_t t = (time_t)(now_ut / USEC_PER_SEC); - struct tm *tmp, tmbuf; - - if (utc) - tmp = gmtime_r(&t, &tmbuf); - else - tmp = localtime_r(&t, &tmbuf); - - if (!tmp) { - buffer[0] = '\0'; - return 0; - } - - size_t used_length = strftime(buffer, len, "%Y-%m-%dT%H:%M:%S", tmp); - if (used_length == 0) { - buffer[0] = '\0'; - return 0; - } - - if (fractional_digits >= 0 && fractional_digits <= 9) { - int fractional_part = (int)(now_ut % USEC_PER_SEC); - if (fractional_part && len - used_length > fractional_digits + 1) { - char format[] = ".%01d"; - format[3] = (char)('0' + fractional_digits); - - // Adjust fractional part - fractional_part /= (int)pow(10, 6 - fractional_digits); - - used_length += snprintf(buffer + used_length, len - used_length, - format, fractional_part); - } - } - - if (utc) { - if (used_length + 1 < len) { - buffer[used_length++] = 'Z'; - buffer[used_length] = '\0'; - } - } - else { - long offset = tmbuf.tm_gmtoff; - int hours = (int)(offset / 3600); - int minutes = abs((int)((offset % 3600) / 60)); - - if (used_length + 7 < len) { // Space for "+HH:MM\0" - used_length += snprintf(buffer + used_length, len - used_length, "%+03d:%02d", hours, minutes); - } - } - - return used_length; -} - -usec_t rfc3339_parse_ut(const char *rfc3339, char **endptr) { - struct tm tm = { 0 }; - int tz_hours = 0, tz_mins = 0; - char *s; - usec_t timestamp, usec = 0; - - // Use strptime to parse up to seconds - s = strptime(rfc3339, "%Y-%m-%dT%H:%M:%S", &tm); - if (!s) - return 0; // Parsing error - - // Parse fractional seconds if present - if (*s == '.') { - char *next; - usec = strtoul(s + 1, &next, 10); - int digits_parsed = (int)(next - (s + 1)); - - if (digits_parsed < 1 || digits_parsed > 9) - return 0; // parsing error - - static const usec_t fix_usec[] = { - 1000000, // 0 digits (not used) - 100000, // 1 digit - 10000, // 2 digits - 1000, // 3 digits - 100, // 4 digits - 10, // 5 digits - 1, // 6 digits - 10, // 7 digits - 100, // 8 digits - 1000, // 9 digits - }; - usec = digits_parsed <= 6 ? usec * fix_usec[digits_parsed] : usec / fix_usec[digits_parsed]; - - s = next; - } - - // Check and parse timezone if present - int tz_offset = 0; - if (*s == '+' || *s == '-') { - // Parse the hours:mins part of the timezone - - if (!isdigit(s[1]) || !isdigit(s[2]) || s[3] != ':' || - !isdigit(s[4]) || !isdigit(s[5])) - return 0; // Parsing error - - char tz_sign = *s; - tz_hours = (s[1] - '0') * 10 + (s[2] - '0'); - tz_mins = (s[4] - '0') * 10 + (s[5] - '0'); - - tz_offset = tz_hours * 3600 + tz_mins * 60; - tz_offset *= (tz_sign == '+' ? 1 : -1); - - s += 6; // Move past the timezone part - } - else if (*s == 'Z') - s++; - else - return 0; // Invalid RFC 3339 format - - // Convert to time_t (assuming local time, then adjusting for timezone later) - time_t epoch_s = mktime(&tm); - if (epoch_s == -1) - return 0; // Error in time conversion - - timestamp = (usec_t)epoch_s * USEC_PER_SEC + usec; - timestamp -= tz_offset * USEC_PER_SEC; - - if(endptr) - *endptr = s; - - return timestamp; -} |