+uint8_t cget_nickname(char *nickname, uint8_t length) {
+ uint8_t i, x, y, matches;
+ char *uniquematch;
+ input_terminator_t terminator;
+
+ memset(nickname, '\0', length);
+
+ while (1) {
+ terminator = get_input_terminated_by(
+ INPUT_TERMINATOR_RETURN | INPUT_TERMINATOR_SPACE, nickname, length);
+
+ /* Clear the screen from any previous completions */
+ x = wherex();
+ y = wherey();
+ for (i = 1; i < 7; i++) {
+ /* "Completion:" is longer than NICKNAME_MAX_LEN */
+ cclearxy(0, y + i, strlen("Completion:"));
+ }
+ gotoxy(x, y);
+
+ if (terminator != INPUT_TERMINATOR_SPACE) {
+ return strlen(nickname);
+ }
+
+ matches = 0;
+ uniquematch = NULL;
+ for (i = 0; i < credits.num_items; i++) {
+ if (strncmp(nickname, credits.credits[i].nickname, strlen(nickname)) !=
+ 0) {
+ continue;
+ }
+ matches++;
+ if (matches > 1) {
+ break;
+ }
+ uniquematch = credits.credits[i].nickname;
+ }
+ if (matches == 1) {
+ /* Display the rest of the nickname */
+ textcolor(TC_LIGHT_GREEN);
+ cprintf("%s", uniquematch + strlen(nickname));
+ textcolor(TC_LIGHT_GRAY);
+ strcat(nickname, uniquematch + strlen(nickname));
+ } else {
+ /* Multiple nicknames match what was entered so far. Abort and
+ * display all matches, then prompt the user again. */
+ char completion[NICKNAME_MAX_LEN + 1];
+ BYTE len = strlen(nickname);
+ x = wherex();
+ y = wherey();
+ cprintf("\r\nCompletion:\r\n");
+ matches = 0;
+ for (i = 0; i < credits.num_items; i++) {
+ if (strncmp(nickname, credits.credits[i].nickname, len) != 0) {
+ continue;
+ }
+ if (++matches == 5) {
+ cprintf("...\r\n");
+ break;
+ }
+ strcpy(completion, credits.credits[i].nickname);
+ *(completion + len) = '\0';
+ cprintf("%s", completion);
+ textcolor(TC_LIGHT_GREEN);
+ cprintf("%c", *(credits.credits[i].nickname + len));
+ textcolor(TC_LIGHT_GRAY);
+ cprintf("%s\r\n", completion + len + 1);
+ }
+ gotoxy(x, y);
+ }
+ }
+}
+
+/* wait until user pressed RETURN, ignore all other input */