/* * Copyright © 1998 NCSA * All rights reserved. * * Programmer: Robb Matzke * Friday, July 24, 1998 * * Purpose: The object modification time message. */ #include #include #include #include #define PABLO_MASK H5O_mtime_mask static void *H5O_mtime_decode(H5F_t *f, const uint8 *p, H5O_shared_t *sh); static herr_t H5O_mtime_encode(H5F_t *f, uint8 *p, const void *_mesg); static void *H5O_mtime_copy(const void *_mesg, void *_dest); static size_t H5O_mtime_size(H5F_t *f, const void *_mesg); static herr_t H5O_mtime_debug(H5F_t *f, const void *_mesg, FILE * stream, intn indent, intn fwidth); /* This message derives from H5O */ const H5O_class_t H5O_MTIME[1] = {{ H5O_MTIME_ID, /*message id number */ "mtime", /*message name for debugging */ sizeof(time_t), /*native message size */ H5O_mtime_decode, /*decode message */ H5O_mtime_encode, /*encode message */ H5O_mtime_copy, /*copy the native value */ H5O_mtime_size, /*raw message size */ NULL, /*free internal memory */ NULL, /*get share method */ NULL, /*set share method */ H5O_mtime_debug, /*debug the message */ }}; /* Interface initialization */ static hbool_t interface_initialize_g = FALSE; #define INTERFACE_INIT NULL /*------------------------------------------------------------------------- * Function: H5O_mtime_decode * * Purpose: Decode a modification time message and return a pointer to a * new time_t value. * * Return: Success: Ptr to new message in native struct. * * Failure: NULL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 24 1998 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5O_mtime_decode(H5F_t __unused__ *f, const uint8 *p, H5O_shared_t __unused__ *sh) { time_t *mesg, the_time; intn i; struct tm tm; static int ncalls=0; FUNC_ENTER(H5O_mtime_decode, NULL); /* check args */ assert(f); assert(p); assert (!sh); /* Initialize time zone information */ if (0==ncalls++) tzset(); /* decode */ for (i=0; i<14; i++) { if (!isdigit(p[i])) { HRETURN_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "badly formatted modification time message"); } } /* * Convert YYYYMMDDhhmmss UTC to a time_t. This is a little problematic * because mktime() operates on local times. We convert to local time * and then figure out the adjustment based on the local time zone and * daylight savings setting. */ memset(&tm, 0, sizeof tm); tm.tm_year = (p[0]-'0')*1000 + (p[1]-'0')*100 + (p[2]-'0')*10 + (p[3]-'0') - 1900; tm.tm_mon = (p[4]-'0')*10 + (p[5]-'0') - 1; tm.tm_mday = (p[6]-'0')*10 + (p[7]-'0'); tm.tm_hour = (p[8]-'0')*10 + (p[9]-'0'); tm.tm_min = (p[10]-'0')*10 + (p[11]-'0'); tm.tm_sec = (p[12]-'0')*10 + (p[13]-'0'); tm.tm_isdst = -1; /*figure it out*/ if ((time_t)-1==(the_time=mktime(&tm))) { HRETURN_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "badly formatted modification time message"); } #if defined(HAVE_TM_GMTOFF) /* FreeBSD, OSF 4.0 */ the_time += tm.tm_gmtoff; #elif defined(HAVE_TIMEZONE) /* Linux */ the_time -= timezone - (tm.tm_isdst?3600:0); #elif defined(HAVE_BSDGETTIMEOFDAY) && defined(HAVE_STRUCT_TIMEZONE) /* Irix5.3 */ { struct timezone tz; if (BSDgettimeofday(NULL, &tz)<0) { HRETURN_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "unable to obtain local timezone information"); } the_time -= tz.tz_minuteswest*60 - (tm.tm_isdst?3600:0); } #elif defined(HAVE_GETTIMEOFDAY) && defined(HAVE_STRUCT_TIMEZONE) { struct timezone tz; if (gettimeofday(NULL, &tz)<0) { HRETURN_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "unable to obtain local timezone information"); } the_time -= tz.tz_minuteswest*60 - (tm.tm_isdst?3600:0); } #else /* * The catch-all. If we can't convert a character string universal * coordinated time to a time_t value reliably then we can't decode the * modification time message. This really isn't as bad as it sounds -- * the only way a user can get the modification time is from H5Gstat() * and H5G_stat() can gracefully recover. */ /* Irix64 */ HRETURN_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "unable to obtain local timezone information"); #endif /* The return value */ if (NULL==(mesg = H5MM_calloc(sizeof(time_t)))) { HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); } *mesg = the_time; FUNC_LEAVE((void*)mesg); } /*------------------------------------------------------------------------- * Function: H5O_mtime_encode * * Purpose: Encodes a modification time message. * * Return: Success: SUCCEED * * Failure: FAIL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 24 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_mtime_encode(H5F_t __unused__ *f, uint8 *p, const void *_mesg) { const time_t *mesg = (const time_t *) _mesg; struct tm *tm; FUNC_ENTER(H5O_mtime_encode, FAIL); /* check args */ assert(f); assert(p); assert(mesg); /* encode */ tm = gmtime(mesg); sprintf((char*)p, "%04d%02d%02d%02d%02d%02d", 1900+tm->tm_year, 1+tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec); FUNC_LEAVE(SUCCEED); } /*------------------------------------------------------------------------- * Function: H5O_mtime_copy * * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if * necessary. * * Return: Success: Ptr to _DEST * * Failure: NULL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 24 1998 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5O_mtime_copy(const void *_mesg, void *_dest) { const time_t *mesg = (const time_t *) _mesg; time_t *dest = (time_t *) _dest; FUNC_ENTER(H5O_mtime_copy, NULL); /* check args */ assert(mesg); if (!dest && NULL==(dest = H5MM_calloc(sizeof(time_t)))) { HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); } /* copy */ *dest = *mesg; FUNC_LEAVE((void *) dest); } /*------------------------------------------------------------------------- * Function: H5O_mtime_size * * Purpose: Returns the size of the raw message in bytes not * counting the message type or size fields, but only the data * fields. This function doesn't take into account * alignment. * * Return: Success: Message data size in bytes w/o alignment. * * Failure: FAIL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 14 1998 * * Modifications: * *------------------------------------------------------------------------- */ static size_t H5O_mtime_size(H5F_t __unused__ *f, const void __unused__ *mesg) { FUNC_ENTER(H5O_mtime_size, 0); /* check args */ assert(f); assert(mesg); FUNC_LEAVE(16); } /*------------------------------------------------------------------------- * Function: H5O_mtime_debug * * Purpose: Prints debugging info for the message. * * Return: Success: SUCCEED * * Failure: FAIL * * Programmer: Robb Matzke * matzke@llnl.gov * Jul 24 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_mtime_debug(H5F_t __unused__ *f, const void *_mesg, FILE *stream, intn indent, intn fwidth) { const time_t *mesg = (const time_t *)_mesg; struct tm *tm; char buf[128]; FUNC_ENTER(H5O_mtime_debug, FAIL); /* check args */ assert(f); assert(mesg); assert(stream); assert(indent >= 0); assert(fwidth >= 0); /* debug */ tm = localtime(mesg); strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S %z", tm); fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth, "Time:", buf); FUNC_LEAVE(SUCCEED); }