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Change string_collate() so NULL and empty strings are equal.

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Gergely Polonkai 2014-08-21 01:23:40 +02:00
parent 4bb4304683
commit df8c954331
1 changed files with 8 additions and 1 deletions
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9
src/ag-db.c
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@ -1029,7 +1029,7 @@ ag_db_get_chart_data_by_id(AgDb *db, guint row_id, GError **err)
* @str2: the second string * @str2: the second string
* *
* A wrapper function around g_utf8_collate() that can handle NULL values. NULL * A wrapper function around g_utf8_collate() that can handle NULL values. NULL
* precedes any strings (even ""). * and empty strings ("") are considered equal.
* *
* Returns: -1 if str1 is ordered before str2, 1 if str2 comes first, or 0 if * Returns: -1 if str1 is ordered before str2, 1 if str2 comes first, or 0 if
* they are identical * they are identical
@ -1037,6 +1037,13 @@ ag_db_get_chart_data_by_id(AgDb *db, guint row_id, GError **err)
static gint static gint
string_collate(const gchar *str1, const gchar *str2) string_collate(const gchar *str1, const gchar *str2)
{ {
if (
((str1 == NULL) && str2 && (*str2 == '\0'))
|| (str1 && (*str1 == '\0') && (str2 == NULL))
) {
return 0;
}
if (((str1 == NULL) || (str2 == NULL)) && (str1 != str2)) { if (((str1 == NULL) || (str2 == NULL)) && (str1 != str2)) {
return (str1 == NULL) ? -1 : 1; return (str1 == NULL) ? -1 : 1;
} }