X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fdaemon%2Futils_time.c;h=ab440edb6d84fbdb4def2a5c4c66ad9be6e7fd46;hb=196f5bd17880d91ba0da33a8f5f6168d039cfa0c;hp=6bdf124bd67a784e0b18af7b388f6508edda67d6;hpb=2079ee1517e34de372f58e7e2267ad5c71a8a41f;p=collectd.git

diff --git a/src/daemon/utils_time.c b/src/daemon/utils_time.c
index 6bdf124b..ab440edb 100644
--- a/src/daemon/utils_time.c
+++ b/src/daemon/utils_time.c
@@ -50,10 +50,10 @@ cdtime_t cdtime(void) /* {{{ */
     char errbuf[1024];
     ERROR("cdtime: clock_gettime failed: %s",
           sstrerror(errno, errbuf, sizeof(errbuf)));
-    return (0);
+    return 0;
   }
 
-  return (TIMESPEC_TO_CDTIME_T(&ts));
+  return TIMESPEC_TO_CDTIME_T(&ts);
 } /* }}} cdtime_t cdtime */
 #else /* !HAVE_CLOCK_GETTIME */
 /* Work around for Mac OS X which doesn't have clock_gettime(2). *sigh* */
@@ -67,14 +67,58 @@ cdtime_t cdtime(void) /* {{{ */
     char errbuf[1024];
     ERROR("cdtime: gettimeofday failed: %s",
           sstrerror(errno, errbuf, sizeof(errbuf)));
-    return (0);
+    return 0;
   }
 
-  return (TIMEVAL_TO_CDTIME_T(&tv));
+  return TIMEVAL_TO_CDTIME_T(&tv);
 } /* }}} cdtime_t cdtime */
 #endif
 #endif
 
+/**********************************************************************
+ Time retrieval functions
+***********************************************************************/
+
+static int get_utc_time(cdtime_t t, struct tm *t_tm, long *nsec) /* {{{ */
+{
+  struct timespec t_spec = CDTIME_T_TO_TIMESPEC(t);
+  NORMALIZE_TIMESPEC(t_spec);
+
+  if (gmtime_r(&t_spec.tv_sec, t_tm) == NULL) {
+    char errbuf[1024];
+    int status = errno;
+    ERROR("get_utc_time: gmtime_r failed: %s",
+          sstrerror(status, errbuf, sizeof(errbuf)));
+    return status;
+  }
+
+  *nsec = t_spec.tv_nsec;
+  return 0;
+} /* }}} int get_utc_time */
+
+static int get_local_time(cdtime_t t, struct tm *t_tm, long *nsec) /* {{{ */
+{
+  struct timespec t_spec = CDTIME_T_TO_TIMESPEC(t);
+  NORMALIZE_TIMESPEC(t_spec);
+
+  if (localtime_r(&t_spec.tv_sec, t_tm) == NULL) {
+    char errbuf[1024];
+    int status = errno;
+    ERROR("get_local_time: localtime_r failed: %s",
+          sstrerror(status, errbuf, sizeof(errbuf)));
+    return status;
+  }
+
+  *nsec = t_spec.tv_nsec;
+  return 0;
+} /* }}} int get_local_time */
+
+/**********************************************************************
+ Formatting functions
+***********************************************************************/
+
+static const char zulu_zone[] = "Z";
+
 /* format_zone reads time zone information from "extern long timezone", exported
  * by <time.h>, and formats it according to RFC 3339. This differs from
  * strftime()'s "%z" format by including a colon between hour and minute. */
@@ -107,61 +151,92 @@ static int format_zone(char *buffer, size_t buffer_size,
   return 0;
 } /* }}} int format_zone */
 
-static int format_rfc3339(char *buffer, size_t buffer_size, cdtime_t t,
-                          _Bool print_nano) /* {{{ */
+int format_rfc3339(char *buffer, size_t buffer_size, struct tm const *t_tm,
+                   long nsec, _Bool print_nano, char const *zone) /* {{{ */
+{
+  int len;
+  char *pos = buffer;
+  size_t size_left = buffer_size;
+
+  if ((len = strftime(pos, size_left, "%Y-%m-%dT%H:%M:%S", t_tm)) == 0)
+    return ENOMEM;
+  pos += len;
+  size_left -= len;
+
+  if (print_nano) {
+    if ((len = snprintf(pos, size_left, ".%09ld", nsec)) == 0)
+      return ENOMEM;
+    pos += len;
+    size_left -= len;
+  }
+
+  sstrncpy(pos, zone, size_left);
+  return 0;
+} /* }}} int format_rfc3339 */
+
+int format_rfc3339_utc(char *buffer, size_t buffer_size, cdtime_t t,
+                       _Bool print_nano) /* {{{ */
 {
-  struct timespec t_spec;
   struct tm t_tm;
-  char base[20]; /* 2006-01-02T15:04:05 */
-  char nano[11]; /* .999999999 */
-  char zone[7];  /* +00:00 */
-  char *fields[] = {base, nano, zone};
-  size_t len;
+  long nsec = 0;
   int status;
 
-  CDTIME_T_TO_TIMESPEC(t, &t_spec);
-  NORMALIZE_TIMESPEC(t_spec);
+  if ((status = get_utc_time(t, &t_tm, &nsec)) != 0)
+    return status; /* The error should have already be reported. */
 
-  if (localtime_r(&t_spec.tv_sec, &t_tm) == NULL) {
-    char errbuf[1024];
-    status = errno;
-    ERROR("format_rfc3339: localtime_r failed: %s",
-          sstrerror(status, errbuf, sizeof(errbuf)));
-    return (status);
-  }
+  return format_rfc3339(buffer, buffer_size, &t_tm, nsec, print_nano,
+                        zulu_zone);
+} /* }}} int format_rfc3339_utc */
 
-  len = strftime(base, sizeof(base), "%Y-%m-%dT%H:%M:%S", &t_tm);
-  if (len == 0)
-    return ENOMEM;
+int format_rfc3339_local(char *buffer, size_t buffer_size, cdtime_t t,
+                         _Bool print_nano) /* {{{ */
+{
+  struct tm t_tm;
+  long nsec = 0;
+  int status;
+  char zone[7]; /* +00:00 */
 
-  if (print_nano)
-    ssnprintf(nano, sizeof(nano), ".%09ld", (long)t_spec.tv_nsec);
-  else
-    sstrncpy(nano, "", sizeof(nano));
+  if ((status = get_local_time(t, &t_tm, &nsec)) != 0)
+    return status; /* The error should have already be reported. */
 
-  status = format_zone(zone, sizeof(zone), &t_tm);
-  if (status != 0)
+  if ((status = format_zone(zone, sizeof(zone), &t_tm)) != 0)
     return status;
 
-  if (strjoin(buffer, buffer_size, fields, STATIC_ARRAY_SIZE(fields), "") < 0)
-    return ENOMEM;
-  return 0;
-} /* }}} int format_rfc3339 */
+  return format_rfc3339(buffer, buffer_size, &t_tm, nsec, print_nano, zone);
+} /* }}} int format_rfc3339_local */
+
+/**********************************************************************
+ Public functions
+***********************************************************************/
 
 int rfc3339(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
 {
   if (buffer_size < RFC3339_SIZE)
     return ENOMEM;
 
-  return format_rfc3339(buffer, buffer_size, t, 0);
-} /* }}} size_t cdtime_to_rfc3339 */
+  return format_rfc3339_utc(buffer, buffer_size, t, 0);
+} /* }}} int rfc3339 */
 
 int rfc3339nano(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
 {
   if (buffer_size < RFC3339NANO_SIZE)
     return ENOMEM;
 
-  return format_rfc3339(buffer, buffer_size, t, 1);
-} /* }}} size_t cdtime_to_rfc3339nano */
+  return format_rfc3339_utc(buffer, buffer_size, t, 1);
+} /* }}} int rfc3339nano */
+
+int rfc3339_local(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
+{
+  if (buffer_size < RFC3339_SIZE)
+    return ENOMEM;
+
+  return format_rfc3339_local(buffer, buffer_size, t, 0);
+} /* }}} int rfc3339 */
+
+int rfc3339nano_local(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
+{
+  if (buffer_size < RFC3339NANO_SIZE)
+    return ENOMEM;
 
-/* vim: set sw=2 sts=2 et fdm=marker : */
+  return format_rfc3339_local(buffer, buffer_size, t, 1);
+} /* }}} int rfc3339nano */