static const gchar * g_utf8_strcasestr (const gchar *haystack, const gchar *needle) { gsize needle_len; gsize haystack_len; const gchar *ret = NULL; gchar *p; gchar *casefold; gchar *caseless_haystack; gint i; g_return_val_if_fail (haystack != NULL, NULL); g_return_val_if_fail (needle != NULL, NULL); casefold = g_utf8_casefold (haystack, -1); caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); g_free (casefold); needle_len = g_utf8_strlen (needle, -1); haystack_len = g_utf8_strlen (caseless_haystack, -1); if (needle_len == 0) { ret = (gchar *)haystack; goto finally_1; } if (haystack_len < needle_len) { ret = NULL; goto finally_1; } p = (gchar*)caseless_haystack; needle_len = strlen (needle); i = 0; while (*p) { if ((strncmp (p, needle, needle_len) == 0)) { ret = pointer_from_offset_skipping_decomp (haystack, i); goto finally_1; } p = g_utf8_next_char (p); i++; } finally_1: g_free (caseless_haystack); return ret; }
static const gchar * utf8_strrcasestr (const gchar *haystack, const gchar *needle) { gsize needle_len; gsize haystack_len; const gchar *ret = NULL; gchar *p; gchar *casefold; gchar *caseless_haystack; gint i; g_return_val_if_fail (haystack != NULL, NULL); g_return_val_if_fail (needle != NULL, NULL); casefold = g_utf8_casefold (haystack, -1); caseless_haystack = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD); g_free (casefold); needle_len = g_utf8_strlen (needle, -1); haystack_len = g_utf8_strlen (caseless_haystack, -1); if (needle_len == 0) { ret = (gchar *)haystack; goto finally_1; } if (haystack_len < needle_len) { ret = NULL; goto finally_1; } i = haystack_len - needle_len; p = g_utf8_offset_to_pointer (caseless_haystack, i); needle_len = strlen (needle); while (p >= caseless_haystack) { if (exact_prefix_cmp (p, needle, needle_len)) { ret = pointer_from_offset_skipping_decomp (haystack, i); goto finally_1; } p = g_utf8_prev_char (p); i--; } finally_1: g_free (caseless_haystack); return ret; }