+/* Return TRUE if both strings match.
+ * The first string is be terminated by a non-digit non-letter non-underscore
+ * character, the second string is terminated by zero.
+ * The pointer to the first string is moved at end of the read word
+ * on success.
+ */
+static boolean str_match_nocase_whole( const char **pcur, const char *str )
+{
+ const char *cur = *pcur;
+
+ if (str_match_no_case(&cur, str) &&
+ !is_digit_alpha_underscore(cur)) {
+ *pcur = cur;
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/* Return the array index that matches starting at *pcur, where the string at
+ * *pcur is terminated by a non-digit non-letter non-underscore.
+ * Returns -1 if no match is found.
+ *
+ * On success, the pointer to the first string is moved to the end of the read
+ * word.
+ */
+static int str_match_name_from_array(const char **pcur,
+ const char * const *array,
+ unsigned array_size)
+{
+ for (unsigned j = 0; j < array_size; ++j) {
+ if (str_match_nocase_whole(pcur, array[j]))
+ return j;
+ }
+ return -1;
+}
+
+/* Return the format corresponding to the name at *pcur.
+ * Returns -1 if there is no format name.
+ *
+ * On success, the pointer to the string is moved to the end of the read format
+ * name.
+ */
+static int str_match_format(const char **pcur)
+{
+ for (unsigned i = 0; i < PIPE_FORMAT_COUNT; i++) {
+ const struct util_format_description *desc =
+ util_format_description(i);
+ if (desc && str_match_nocase_whole(pcur, desc->name)) {
+ return i;
+ }
+ }
+ return -1;
+}
+