cancel key support added

[pkg/abook.git] / abook_rl.c

diff --git a/abook_rl.c b/abook_rl.c
index be8ac908b0062f436bc9b12afb2a9c282fade5fb..43ab31a0fe7d45323a6d06c6834e334c9a9aace2 100644 (file)
--- a/abook_rl.c
+++ b/abook_rl.c
@@ -33,6 +33,8 @@
 static int rl_x, rl_y;
 static WINDOW *rl_win;
 
+static bool rl_cancelled;
+
 static void
 rl_refresh()
 {
@@ -58,26 +60,36 @@ rline_update()
        rl_refresh();
 }
 
-void
+static void
 rline_compdisp(char **matches, int n, int max_len)
 {
-       /*
-        * dummy
-        */
+       /* dummy */
+}
+
+static int
+rl_cancel(int dummy1, int dummy2)
+{
+       rl_cancelled = TRUE;
+
+       rl_done = 1;
+
+       return 0;
 }
 
 static void
-abook_rl_init(int use_completion)
+abook_rl_init(bool use_completion)
 {
        rl_readline_name = RL_READLINE_NAME;
        
        rl_already_prompted = 1;
+       rl_catch_sigwinch = 0;
        
        rl_redisplay_function = rline_update;
        rl_completion_display_matches_hook = rline_compdisp;
-       
+
        rl_unbind_function_in_map(rl_clear_screen, rl_get_keymap());
        rl_unbind_function_in_map(rl_reverse_search_history, rl_get_keymap());
+       rl_unbind_function_in_map(rl_re_read_init_file, rl_get_keymap());
        
        if(use_completion) {
                rl_bind_key('\t', rl_menu_complete);
@@ -86,18 +98,21 @@ abook_rl_init(int use_completion)
                rl_unbind_function_in_map(rl_menu_complete, rl_get_keymap());
        }
 
+       rl_bind_key('g' & 31, rl_cancel); /* C-g */
+
        clear_history();
+
+       rl_cancelled = FALSE;
 }      
 
 char *
-abook_readline(WINDOW *w, int y, int x, char *s, int limit, int use_completion)
+abook_readline(WINDOW *w, int y, int x, char *s, int limit, bool use_completion)
 {
-       char *ret = NULL;
+       char *ret;
 
-       rl_win = w;
        abook_rl_init(use_completion);
 
-       wmove(rl_win, rl_y = y, rl_x = x);
+       wmove(rl_win = w, rl_y = y, rl_x = x);
        rl_refresh();
 
        if(s && *s)
@@ -105,6 +120,12 @@ abook_readline(WINDOW *w, int y, int x, char *s, int limit, int use_completion)
        
        ret = readline(NULL);
 
+       if(rl_cancelled) {
+               if(ret)
+                       free(ret);
+               ret = NULL;
+       }
+
        return ret;
 }