+char *av_strtok(char *s, const char *delim, char **saveptr)
+{
+ char *tok;
+
+ if (!s && !(s = *saveptr))
+ return NULL;
+
+ /* skip leading delimiters */
+ s += strspn(s, delim);
+
+ /* s now points to the first non delimiter char, or to the end of the string */
+ if (!*s) {
+ *saveptr = NULL;
+ return NULL;
+ }
+ tok = s++;
+
+ /* skip non delimiters */
+ s += strcspn(s, delim);
+ if (*s) {
+ *s = 0;
+ *saveptr = s+1;
+ } else {
+ *saveptr = NULL;
+ }
+
+ return tok;
+}
+