implementation of jmp_file_index

interactions.c

@@ -664,5 +664,55 @@ void search_previous(){
 	status |= (STATUS_RUN_BACKEND);
 }
 void jmp_file_index(){
-	TODO;
+		echo();
+	unsigned long i;
+	for (i = 0; i < terminal_width -1; i++) {
+		mvwaddch(win_b, 0, i, ' ');
+	}
+	mvwaddch(win_b, 0, 0, ':');
+	memset(search_buffer, 0, INPUT_BUFFER_SIZE);
+
+	curs_set(1);
+	echo();
+
+	timeout(-1); /* negative numbers block until enter is pressed */
+
+	unsigned int pass = 0;
+	char ch;
+	char err = 0;
+	char number_buffer[INPUT_BUFFER_SIZE];
+	char *num = number_buffer;
+
+	wmove(win_b, 0, 1);
+	while(1) {
+		ch = wgetch(win_b);
+
+		if (ch >= '0' && ch <= '9') {
+			*num = ch;
+			num++;
+		} else if (ch == '\n') {
+			break;
+		} else if (ch == 27) { /* esc key */
+			break;
+		} else if (ch == 127) { /* backspace */
+			num--;
+			if (num < number_buffer) {
+				num = number_buffer;
+			}
+		}
+	}
+	*num = 0;
+	num = number_buffer;
+
+	unsigned long parsed_number = 0;
+	while(*num) {
+		parsed_number = (parsed_number * 10) + (*num - '0');
+		num++;
+	}
+	mid_dir.current_file = &mid_dir.file_list[parsed_number];
+
+	noecho();
+	curs_set(0);
+
+	status |= (STATUS_RUN_BACKEND);
 }