jpeg-utils: Allow custom datetime format

The default locale datetime format string may not suit everyone, this
adds possibility to specify custom format. The format string should be
syntactically conforming to strftime(3).

1 files changed, 2 insertions, 2 deletions

diff --git a/src/jpeg-utils.cpp b/src/jpeg-utils.cpp
index e9e1e65..61aeebd 100644
--- a/src/jpeg-utils.cpp
+++ b/src/jpeg-utils.cpp
@@ -289,7 +289,7 @@ get_exif_data_fixed (ExifData *exif, const gchar *key)
           if (exif->override_datetime != (time_t) -1) {
             tt = (struct tm *) g_malloc0 (sizeof (struct tm));
             localtime_r (&exif->override_datetime, tt);
-            if (strftime (&conv[0], sizeof (conv), "%c", tt))
+            if (strftime (&conv[0], sizeof (conv), exif->datetime_format ? exif->datetime_format : "%c", tt))
               res = g_strdup (&conv[0]);
           }
 
@@ -297,7 +297,7 @@ get_exif_data_fixed (ExifData *exif, const gchar *key)
             tt = parse_exif_date (val);
             if (tt) {
               shift_time (tt, exif->timezone_shift);
-              if (strftime (&conv[0], sizeof (conv), "%c", tt))
+              if (strftime (&conv[0], sizeof (conv), exif->datetime_format ? exif->datetime_format : "%c", tt))
                 res = g_strdup (&conv[0]);
             }
           }