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fileinfo: ignore USEC if not available

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When future porting deprecated code to use
g_file_info_get_modification_date_time() we risk a number of breakages
because the current implementation also requires the additional use of
G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC. This handles that situation gracefully
and returns a GDateTime with less precision.

Applications that want the additional precision, are already using the
additional attribute.

(Minor tweaks by Philip Withnall.)
This commit is contained in:
Christian Hergert 2019-09-04 13:41:24 -07:00 committed by Philip Withnall
parent 7a33239bab
commit b933b0f369
1 changed files with 7 additions and 2 deletions
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9
gio/gfileinfo.c
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@ -1790,6 +1790,10 @@ G_GNUC_END_IGNORE_DEPRECATIONS
* Gets the modification time of the current @info and returns it as a
* #GDateTime.
*
* This requires the %G_FILE_ATTRIBUTE_TIME_MODIFIED attribute. If
* %G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC is provided, the resulting #GDateTime
* will have microsecond precision.
*
* Returns: (transfer full) (nullable): modification time, or %NULL if unknown
* Since: 2.62
*/
@ -1812,11 +1816,12 @@ g_file_info_get_modification_date_time (GFileInfo *info)
if (value == NULL)
return NULL;
dt = g_date_time_new_from_unix_utc (_g_file_attribute_value_get_uint64 (value));
value_usec = g_file_info_find_value (info, attr_mtime_usec);
if (value_usec == NULL)
return NULL;
return g_steal_pointer (&dt);
dt = g_date_time_new_from_unix_utc (_g_file_attribute_value_get_uint64 (value));
dt2 = g_date_time_add_seconds (dt, _g_file_attribute_value_get_uint32 (value_usec) / (gdouble) G_USEC_PER_SEC);
g_date_time_unref (dt);