+
+void u8_buf_copy_rpad (uint8_t *dst, size_t dst_size,
+ const uint8_t *src, size_t src_size,
+ char pad);
+\f
+struct substring
+ss_empty (void)
+{
+ struct substring ss;
+ ss.string = NULL;
+ ss.length = 0;
+ return ss;
+}
+
+/* Returns a substring whose contents are the given C-style
+ string CSTR. */
+static inline struct substring
+ss_cstr (const char *cstr)
+{
+ return ss_buffer (cstr, strlen (cstr));
+}
+
+/* Returns a substring whose contents are the CNT characters in
+ BUFFER. */
+static inline struct substring
+ss_buffer (const char *buffer, size_t cnt)
+{
+ struct substring ss;
+ ss.string = (char *) buffer;
+ ss.length = cnt;
+ return ss;
+}
+