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authorOndrej Zajicek <santiago@crfreenet.org>2013-04-23 02:54:13 +0200
committerOndrej Zajicek <santiago@crfreenet.org>2013-04-23 02:54:13 +0200
commit32622d0ea366406f3afa14bb9edb4855d6979786 (patch)
tree9ccfb9c0e165658e54f82da1d9de2c9bb3348f5a /client/birdc.c
parentefd6d12b975441c7e1875a59dd9e0f3db7e958cb (diff)
parenta5e9f3d26f887deb451a3ea086e52266c117aa0a (diff)
Merge branch 'birdcl'
Diffstat (limited to 'client/birdc.c')
-rw-r--r--client/birdc.c223
1 files changed, 223 insertions, 0 deletions
diff --git a/client/birdc.c b/client/birdc.c
new file mode 100644
index 00000000..9dd6d9b9
--- /dev/null
+++ b/client/birdc.c
@@ -0,0 +1,223 @@
+/*
+ * BIRD Client - Readline variant I/O
+ *
+ * (c) 1999--2004 Martin Mares <mj@ucw.cz>
+ *
+ * Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+#include <curses.h>
+
+#include "nest/bird.h"
+#include "lib/resource.h"
+#include "lib/string.h"
+#include "client/client.h"
+#include "sysdep/unix/unix.h"
+
+static int input_hidden_end;
+static int prompt_active;
+
+/*** Input ***/
+
+/* HACK: libreadline internals we need to access */
+extern int _rl_vis_botlin;
+extern void _rl_move_vert(int);
+extern Function *rl_last_func;
+
+static void
+add_history_dedup(char *cmd)
+{
+ /* Add history line if it differs from the last one */
+ HIST_ENTRY *he = history_get(history_length);
+ if (!he || strcmp(he->line, cmd))
+ add_history(cmd);
+}
+
+static void
+input_got_line(char *cmd_buffer)
+{
+ if (!cmd_buffer)
+ {
+ cleanup();
+ exit(0);
+ }
+
+ if (cmd_buffer[0])
+ {
+ add_history_dedup(cmd_buffer);
+ submit_command(cmd_buffer);
+ }
+
+ free(cmd_buffer);
+}
+
+void
+input_start_list(void)
+{
+ /* Leave the currently edited line and make space for listing */
+ _rl_move_vert(_rl_vis_botlin);
+#ifdef HAVE_RL_CRLF
+ rl_crlf();
+#endif
+}
+
+void
+input_stop_list(void)
+{
+ /* Reprint the currently edited line after listing */
+ rl_on_new_line();
+ rl_redisplay();
+}
+
+static int
+input_complete(int arg UNUSED, int key UNUSED)
+{
+ static int complete_flag;
+ char buf[256];
+
+ if (rl_last_func != input_complete)
+ complete_flag = 0;
+ switch (cmd_complete(rl_line_buffer, rl_point, buf, complete_flag))
+ {
+ case 0:
+ complete_flag = 1;
+ break;
+ case 1:
+ rl_insert_text(buf);
+ break;
+ default:
+ complete_flag = 1;
+#ifdef HAVE_RL_DING
+ rl_ding();
+#endif
+ }
+ return 0;
+}
+
+static int
+input_help(int arg, int key UNUSED)
+{
+ int i, in_string, in_bracket;
+
+ if (arg != 1)
+ return rl_insert(arg, '?');
+
+ in_string = in_bracket = 0;
+ for (i = 0; i < rl_point; i++)
+ {
+
+ if (rl_line_buffer[i] == '"')
+ in_string = ! in_string;
+ else if (! in_string)
+ {
+ if (rl_line_buffer[i] == '[')
+ in_bracket++;
+ else if (rl_line_buffer[i] == ']')
+ in_bracket--;
+ }
+ }
+
+ /* `?' inside string or path -> insert */
+ if (in_string || in_bracket)
+ return rl_insert(1, '?');
+
+ rl_begin_undo_group(); /* HACK: We want to display `?' at point position */
+ rl_insert_text("?");
+ rl_redisplay();
+ rl_end_undo_group();
+ input_start_list();
+ cmd_help(rl_line_buffer, rl_point);
+ rl_undo_command(1, 0);
+ input_stop_list();
+ return 0;
+}
+
+void
+input_init(void)
+{
+ rl_readline_name = "birdc";
+ rl_add_defun("bird-complete", input_complete, '\t');
+ rl_add_defun("bird-help", input_help, '?');
+ rl_callback_handler_install("bird> ", input_got_line);
+
+ // rl_get_screen_size();
+ term_lns = LINES ? LINES : 25;
+ term_cls = COLS ? COLS : 80;
+
+ prompt_active = 1;
+
+ // readline library does strange things when stdin is nonblocking.
+ // if (fcntl(0, F_SETFL, O_NONBLOCK) < 0)
+ // die("fcntl: %m");
+}
+
+static void
+input_reveal(void)
+{
+ /* need this, otherwise some lib seems to eat pending output when
+ the prompt is displayed */
+ fflush(stdout);
+ tcdrain(STDOUT_FILENO);
+
+ rl_end = input_hidden_end;
+ rl_expand_prompt("bird> ");
+ rl_forced_update_display();
+
+ prompt_active = 1;
+}
+
+static void
+input_hide(void)
+{
+ input_hidden_end = rl_end;
+ rl_end = 0;
+ rl_expand_prompt("");
+ rl_redisplay();
+
+ prompt_active = 0;
+}
+
+void
+input_notify(int prompt)
+{
+ if (prompt == prompt_active)
+ return;
+
+ if (prompt)
+ input_reveal();
+ else
+ input_hide();
+}
+
+void
+input_read(void)
+{
+ rl_callback_read_char();
+}
+
+void
+more_begin(void)
+{
+}
+
+void
+more_end(void)
+{
+}
+
+void
+cleanup(void)
+{
+ if (init)
+ return;
+
+ input_hide();
+ rl_callback_handler_remove();
+}