{GPL, other}: Relicense to MIT license.

[collectd.git] / src / utils_time.c

diff --git a/src/utils_time.c b/src/utils_time.c
index aac6135..6603c15 100644 (file)
--- a/src/utils_time.c
+++ b/src/utils_time.c
@@ -1,19 +1,24 @@
 /**
- * collectd - src/utils_time.h
- * Copyright (C) 2010  Florian octo Forster
+ * collectd - src/utils_time.c
+ * Copyright (C) 2010       Florian octo Forster
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
  *   Florian octo Forster <ff at octo.it>
@@ -61,4 +66,39 @@ cdtime_t cdtime (void) /* {{{ */
 } /* }}} cdtime_t cdtime */
 #endif
 
+size_t cdtime_to_iso8601 (char *s, size_t max, cdtime_t t) /* {{{ */
+{
+  struct timespec t_spec;
+  struct tm t_tm;
+
+  size_t len;
+
+  CDTIME_T_TO_TIMESPEC (t, &t_spec);
+  NORMALIZE_TIMESPEC (t_spec);
+
+  if (localtime_r ((time_t *)&t_spec.tv_sec, &t_tm) == NULL) {
+    char errbuf[1024];
+    ERROR ("cdtime_to_iso8601: localtime_r failed: %s",
+        sstrerror (errno, errbuf, sizeof (errbuf)));
+    return (0);
+  }
+
+  len = strftime (s, max, "%Y-%m-%dT%H:%M:%S", &t_tm);
+  if (len == 0)
+    return 0;
+
+  if (max - len > 2) {
+    int n = snprintf (s + len, max - len, ".%09i", (int)t_spec.tv_nsec);
+    len += (n < max - len) ? n : max - len;
+  }
+
+  if (max - len > 3) {
+    int n = strftime (s + len, max - len, "%z", &t_tm);
+    len += (n < max - len) ? n : max - len;
+  }
+
+  s[max - 1] = '\0';
+  return len;
+} /* }}} size_t cdtime_to_iso8601 */
+
 /* vim: set sw=2 sts=2 et fdm=marker : */