elflink, cli: TAB key now displays labels

Now, if the user hits the TAB key at a prompt a list of all labels to
complete the current label typed on the command-line is printed. If
nothing is typed at the command-line all labels are printed.

This feature is available in the asm command-line interface so lets
make it available in the C version.

Signed-off-by: Matt Fleming <matt.fleming@linux.intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/com32/elflink/ldlinux/readconfig.c b/com32/elflink/ldlinux/readconfig.c
index e13d6d47..a29c6c60 100644
--- a/com32/elflink/ldlinux/readconfig.c
+++ b/com32/elflink/ldlinux/readconfig.c
@@ -420,6 +420,17 @@ static struct menu *end_submenu(void)
     return current_menu->parent ? current_menu->parent : current_menu;
 }
 
+void print_labels(const char *prefix, size_t len)
+{
+    struct menu_entry *me;
+
+    printf("\n");
+    for (me = all_entries; me; me = me->next ) {
+	if (!strncmp(prefix, me->label, len))
+	    printf(" %s\n", me->label);
+    }
+}
+
 static struct menu_entry *find_label(const char *str)
 {
     const char *p;