initial readline support

[pkg/abook.git] / abook_rl.c

diff --git a/abook_rl.c b/abook_rl.c
new file mode 100644 (file)
index 0000000..0cd591e
--- /dev/null
+++ b/abook_rl.c
@@ -0,0 +1,107 @@
+/*
+ * $Id$
+ *
+ * by JH <jheinonen@users.sourceforge.net>
+ *
+ * Copyright (C) Jaakko Heinonen
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include "abook.h"
+#include "abook_rl.h"
+
+#ifdef HAVE_CONFIG_H
+#      include "config.h"
+#endif
+
+#if defined(HAVE_READLINE_READLINE_H)
+#       include <readline/readline.h>
+#elif defined(HAVE_READLINE_H)
+#       include <readline.h>
+#endif
+
+#if defined(HAVE_READLINE_HISTORY_H)
+#       include <readline/history.h>
+#elif defined(HAVE_HISTORY_H)
+#       include <history.h>
+#endif
+
+#define RL_READLINE_NAME       "Abook"
+
+static int rl_x, rl_y;
+static WINDOW *rl_win;
+
+static void
+rl_refresh()
+{
+       /*refresh();*/
+       wrefresh(rl_win);
+}
+
+static void
+rline_update()
+{      
+       int real_point = rl_point + rl_x;
+       
+       if(real_point > (COLS - 1))
+               mvwaddnstr(rl_win, rl_y, rl_x,
+                       rl_line_buffer + (1 + real_point - COLS),
+                       COLS - rl_x - 1);
+       else
+               mvwaddnstr(rl_win, rl_y, rl_x, rl_line_buffer, rl_end);
+
+       wclrtoeol(rl_win);
+       wmove(rl_win, rl_y, min(real_point, COLS - 1));
+
+       rl_refresh();
+}
+
+void
+rline_compdisp(char **matches, int n, int max_len)
+{
+       /*
+        * dummy
+        */
+}
+
+static void
+abook_rl_init(int use_completion)
+{
+       rl_readline_name = RL_READLINE_NAME;
+       
+       rl_already_prompted = 1;
+       
+       rl_redisplay_function = rline_update;
+       rl_completion_display_matches_hook = rline_compdisp;
+       
+       rl_unbind_function_in_map(rl_clear_screen, rl_get_keymap());
+
+       if(use_completion)
+               rl_bind_key('\t', rl_menu_complete);
+       else
+               rl_unbind_function_in_map(rl_complete, rl_get_keymap());
+
+       clear_history();
+}      
+
+char *
+abook_readline(WINDOW *w, int y, int x, char *s, int limit, int use_completion)
+{
+       char *ret = NULL;
+
+       rl_win = w;
+       abook_rl_init(use_completion);
+
+       wmove(rl_win, rl_y = y, rl_x = x);
+       rl_refresh();
+
+       if(s && *s)
+               add_history(s);
+       
+       ret = readline(NULL);
+
+       return ret;
+}