lib/iso3307.c

   1 #include "squid.h"
   2 #include "util.h"
   3
   4 #if HAVE_STDIO_H
   5 #include <stdio.h>
   6 #endif
   7 #if HAVE_STRING_H
   8 #include <string.h>
   9 #endif
  10 #if HAVE_CTYPE_H
  11 #include <ctype.h>
  12 #endif
  13 #if HAVE_TIME_H
  14 #include <time.h>
  15 #endif
  16
  17 #define ASCII_DIGIT(c) ((c)-48)
  18
  19 time_t
  20 parse_iso3307_time(const char *buf)
  21 {
  22     /* buf is an ISO 3307 style time: YYYYMMDDHHMMSS or YYYYMMDDHHMMSS.xxx */
  23     struct tm tms;
  24     time_t t;
  25     while (*buf == ' ' || *buf == '\t')
  26         buf++;
  27     if ((int) strlen(buf) < 14)
  28         return 0;
  29     memset(&tms, '\0', sizeof(struct tm));
  30     tms.tm_year = (ASCII_DIGIT(buf[0]) * 1000) + (ASCII_DIGIT(buf[1]) * 100) +
  31                   (ASCII_DIGIT(buf[2]) * 10) + ASCII_DIGIT(buf[3]) - 1900;
  32     tms.tm_mon = (ASCII_DIGIT(buf[4]) * 10) + ASCII_DIGIT(buf[5]) - 1;
  33     tms.tm_mday = (ASCII_DIGIT(buf[6]) * 10) + ASCII_DIGIT(buf[7]);
  34     tms.tm_hour = (ASCII_DIGIT(buf[8]) * 10) + ASCII_DIGIT(buf[9]);
  35     tms.tm_min = (ASCII_DIGIT(buf[10]) * 10) + ASCII_DIGIT(buf[11]);
  36     tms.tm_sec = (ASCII_DIGIT(buf[12]) * 10) + ASCII_DIGIT(buf[13]);
  37 #if HAVE_TIMEGM
  38     t = timegm(&tms);
  39 #elif HAVE_MKTIME
  40     t = mktime(&tms);
  41 #else
  42     t = (time_t) 0;
  43 #endif
  44     return t;
  45 }