summaryrefslogtreecommitdiffstats
path: root/src/H5Omtime.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/H5Omtime.c')
-rw-r--r--src/H5Omtime.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/src/H5Omtime.c b/src/H5Omtime.c
new file mode 100644
index 0000000..ae85abb
--- /dev/null
+++ b/src/H5Omtime.c
@@ -0,0 +1,316 @@
+/*
+ * Copyright © 1998 NCSA
+ * All rights reserved.
+ *
+ * Programmer: Robb Matzke <matzke@llnl.gov>
+ * Friday, July 24, 1998
+ *
+ * Purpose: The object modification time message.
+ */
+#include <H5private.h>
+#include <H5Eprivate.h>
+#include <H5MMprivate.h>
+#include <H5Oprivate.h>
+
+#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_idst?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(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);
+}
+
generated by cgit v0.12 at 2024-11-15 23:54:23 (GMT)