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dialog: Use case-insensitive filter matching on portal dialogs

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On most implementations, filter pattern matching is case-sensitive. For case-insensitive matching of a pattern such as '*.png', the pattern *.[pP][nN][gG]' must be used.
This commit is contained in:
Frank Praznik
2026-04-21 10:02:22 -04:00
parent 651136ac7a
commit 387439d009
1 changed files with 16 additions and 1 deletions
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17
src/dialog/unix/SDL_portaldialog.c
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@@ -86,10 +86,25 @@ static void DBus_AppendFilter(SDL_DBusContext *dbus, DBusMessageIter *parent, co
dbus->message_iter_append_basic(&filter_entry, DBUS_TYPE_STRING, &filter.name);
dbus->message_iter_open_container(&filter_entry, DBUS_TYPE_ARRAY, "(us)", &filter_array);
patterns = SDL_strdup(filter.pattern);
/* Copy the filter string, converting to a case-insensitive version.
* For example, for case-insensitive matching of '*.png', the pattern '*.[pP][nN][gG]' is used.
*/
const size_t len = SDL_strlen(filter.pattern) + 1;
patterns = SDL_malloc(len * 4); // Single characters may be expanded to 4 characters.
if (!patterns) {
goto cleanup;
}
for (size_t i = 0, p = 0; i < len; ++i) {
if ((filter.pattern[i] >= 'a' && filter.pattern[i] <= 'z') ||
(filter.pattern[i] >= 'A' && filter.pattern[i] <= 'Z')) {
patterns[p++] = '[';
patterns[p++] = SDL_tolower(filter.pattern[i]);
patterns[p++] = SDL_toupper(filter.pattern[i]);
patterns[p++] = ']';
} else {
patterns[p++] = filter.pattern[i];
}
}
pattern = SDL_strtok_r(patterns, ";", &state);
while (pattern) {