dovecot-2.1: Added t_strflocaltime().

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.1/rev/22cfba724675
changeset: 13923:22cfba724675
user:      Timo Sirainen <tss at iki.fi>
date:      Tue Jan 10 22:51:52 2012 +0200
description:
Added t_strflocaltime().

diffstat:

 src/lib/macros.h    |   5 ++++-
 src/lib/time-util.c |  21 +++++++++++++++++++++
 src/lib/time-util.h |   3 +++
 3 files changed, 28 insertions(+), 1 deletions(-)

diffs (68 lines):

diff -r 1362d8bda03c -r 22cfba724675 src/lib/macros.h
--- a/src/lib/macros.h	Tue Jan 10 21:39:13 2012 +0200
+++ b/src/lib/macros.h	Tue Jan 10 22:51:52 2012 +0200
@@ -93,6 +93,8 @@
 	__attribute__((format_arg (arg_idx)))
 #  define ATTR_SCANF(format_idx, arg_idx) \
 	__attribute__((format (scanf, format_idx, arg_idx)))
+#  define ATTR_STRFTIME(format_idx) \
+	__attribute__((format (strftime, format_idx, 0)))
 #  define ATTR_UNUSED __attribute__((unused))
 #  define ATTR_NORETURN __attribute__((noreturn))
 #  define ATTR_CONST __attribute__((const))
@@ -100,7 +102,8 @@
 #else
 #  define ATTR_FORMAT(format_idx, arg_idx)
 #  define ATTR_FORMAT_ARG(arg_idx)
-#  define ATTR_SCANF
+#  define ATTR_SCANF(format_idx, arg_idx)
+#  define ATTR_STRFTIME(format_idx)
 #  define ATTR_UNUSED
 #  define ATTR_NORETURN
 #  define ATTR_CONST
diff -r 1362d8bda03c -r 22cfba724675 src/lib/time-util.c
--- a/src/lib/time-util.c	Tue Jan 10 21:39:13 2012 +0200
+++ b/src/lib/time-util.c	Tue Jan 10 22:51:52 2012 +0200
@@ -3,6 +3,10 @@
 #include "lib.h"
 #include "time-util.h"
 
+#include <time.h>
+
+#define STRFTIME_MAX_BUFSIZE (1024*64)
+
 int timeval_cmp(const struct timeval *tv1, const struct timeval *tv2)
 {
 	if (tv1->tv_sec < tv2->tv_sec)
@@ -35,3 +39,20 @@
 	}
 	return ((long long)secs * 1000000ULL) + usecs;
 }
+
+const char *t_strflocaltime(const char *fmt, time_t t)
+{
+	const struct tm *tm;
+	size_t bufsize = strlen(fmt) + 32;
+	char *buf = t_buffer_get(bufsize);
+	size_t ret;
+
+	tm = localtime(&t);
+	while ((ret = strftime(buf, bufsize, fmt, tm)) == 0) {
+		bufsize *= 2;
+		i_assert(bufsize <= STRFTIME_MAX_BUFSIZE);
+		buf = t_buffer_get(bufsize);
+	}
+	t_buffer_alloc(ret + 1);
+	return buf;
+}
diff -r 1362d8bda03c -r 22cfba724675 src/lib/time-util.h
--- a/src/lib/time-util.h	Tue Jan 10 21:39:13 2012 +0200
+++ b/src/lib/time-util.h	Tue Jan 10 22:51:52 2012 +0200
@@ -11,4 +11,7 @@
 long long timeval_diff_usecs(const struct timeval *tv1,
 			     const struct timeval *tv2);
 
+/* Wrapper to strftime() */
+const char *t_strflocaltime(const char *fmt, time_t t) ATTR_STRFTIME(1);
+
 #endif