Prompt history.

CHANGES

@@ -1,6 +1,8 @@
 06 January 2009
 
-* Use a splay tree for key bindings.
+* Per-client prompt history of up to 100 items.
+* Use a splay tree for key bindings instead of an array. As a side-effect this
+  sorts them when listed.
 
 22 December 2008
 
@@ -796,7 +798,7 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.177 2009-01-06 14:10:32 nicm Exp $
+$Id: CHANGES,v 1.178 2009-01-06 15:37:15 nicm Exp $
 
  LocalWords:  showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
  LocalWords:  rivo nurges lscm Erdely eol smysession mysession ek dstname RB

server-fn.c

@@ -1,4 +1,4 @@
-/* $Id: server-fn.c,v 1.50 2008-08-28 17:45:27 nicm Exp $ */
+/* $Id: server-fn.c,v 1.51 2009-01-06 15:37:15 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -68,6 +68,8 @@ server_set_client_prompt(
 	c->prompt_callback = fn;
 	c->prompt_data = data;
 
+	c->prompt_hindex = 0;
+
 	c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
 	c->flags |= CLIENT_STATUS;
 }
@@ -82,6 +84,7 @@ server_clear_client_prompt(struct client *c)
 	c->prompt_string = NULL;
 
 	xfree(c->prompt_buffer);
+	c->prompt_buffer = NULL;
 
 	c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
 	c->flags |= CLIENT_REDRAW;

server.c

@@ -1,4 +1,4 @@
-/* $Id: server.c,v 1.87 2008-12-13 18:06:08 nicm Exp $ */
+/* $Id: server.c,v 1.88 2009-01-06 15:37:15 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -507,6 +507,8 @@ server_accept_client(int srv_fd)
 	c->in = buffer_create(BUFSIZ);
 	c->out = buffer_create(BUFSIZ);
 
+	ARRAY_INIT(&c->prompt_hdata);
+
 	c->tty.fd = -1;
 	c->title = NULL;
 
@@ -569,6 +571,20 @@ server_lost_client(struct client *c)
 
 	tty_free(&c->tty);
 
+	if (c->title != NULL)
+		xfree(c->title);
+
+	if (c->message_string != NULL)
+		xfree(c->message_string);
+
+	if (c->prompt_string != NULL)
+		xfree(c->prompt_string);
+	if (c->prompt_buffer != NULL)
+		xfree(c->prompt_buffer);
+	for (i = 0; i < ARRAY_LENGTH(&c->prompt_hdata); i++)
+		xfree(ARRAY_ITEM(&c->prompt_hdata, i));
+	ARRAY_FREE(&c->prompt_hdata);
+
 	close(c->fd);
 	buffer_destroy(c->in);
 	buffer_destroy(c->out);

status.c

@@ -1,4 +1,4 @@
-/* $Id: status.c,v 1.52 2008-12-08 16:19:51 nicm Exp $ */
+/* $Id: status.c,v 1.53 2009-01-06 15:37:15 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -32,6 +32,8 @@ char   *status_replace(struct session *, char *, time_t);
 size_t	status_width(struct winlink *);
 char   *status_print(struct session *, struct winlink *, struct grid_cell *);
 
+void	status_prompt_add_history(struct client *);
+
 /* Draw status for client on the last lines of given context. */
 void
 status_redraw(struct client *c)
@@ -530,8 +532,37 @@ status_prompt_key(struct client *c, int key)
 			c->flags |= CLIENT_STATUS;
 		}
 		break;
+	case KEYC_UP:
+		if (ARRAY_LENGTH(&c->prompt_hdata) == 0)
+			break;
+	       	xfree(c->prompt_buffer);
+
+		c->prompt_buffer = xstrdup(ARRAY_ITEM(&c->prompt_hdata,
+		    ARRAY_LENGTH(&c->prompt_hdata) - 1 - c->prompt_hindex));
+		if (c->prompt_hindex != ARRAY_LENGTH(&c->prompt_hdata) - 1)
+			c->prompt_hindex++;
+
+		c->prompt_index = strlen(c->prompt_buffer);
+		c->flags |= CLIENT_STATUS;
+		break;
+	case KEYC_DOWN:
+		xfree(c->prompt_buffer);
+
+		if (c->prompt_hindex != 0) {
+			c->prompt_hindex--;
+			c->prompt_buffer = xstrdup(ARRAY_ITEM(
+			    &c->prompt_hdata, ARRAY_LENGTH(
+			    &c->prompt_hdata) - 1 - c->prompt_hindex));
+		} else
+			c->prompt_buffer = xstrdup("");
+
+		c->prompt_index = strlen(c->prompt_buffer);
+		c->flags |= CLIENT_STATUS;
+		break;
  	case '\r':	/* enter */
 		if (*c->prompt_buffer != '\0') {
+			status_prompt_add_history(c);
+
 			c->prompt_callback(c->prompt_data, c->prompt_buffer);
 			server_clear_client_prompt(c);
 			break;
@@ -560,3 +591,19 @@ status_prompt_key(struct client *c, int key)
 		break;
 	}
 }
+
+/* Add line to the history. */
+void
+status_prompt_add_history(struct client *c)
+{
+	if (ARRAY_LENGTH(&c->prompt_hdata) > 0 &&
+	    strcmp(ARRAY_LAST(&c->prompt_hdata), c->prompt_buffer) == 0)
+		return;
+			
+	if (ARRAY_LENGTH(&c->prompt_hdata) == PROMPT_HISTORY) {
+		xfree(ARRAY_FIRST(&c->prompt_hdata));
+		ARRAY_REMOVE(&c->prompt_hdata, 0);
+	}
+
+	ARRAY_ADD(&c->prompt_hdata, xstrdup(c->prompt_buffer));
+}

tmux.h

@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.205 2009-01-06 14:10:32 nicm Exp $ */
+/* $Id: tmux.h,v 1.206 2009-01-06 15:37:15 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -119,6 +119,9 @@ extern const char    *__progname;
 /* Default configuration file. */
 #define DEFAULT_CFG ".tmux.conf"
 
+/* Default prompt history length. */
+#define PROMPT_HISTORY 100
+
 /* Fatal errors. */
 #define fatal(msg) log_fatal("%s: %s", __func__, msg);
 #define fatalx(msg) log_fatalx("%s: %s", __func__, msg);
@@ -745,6 +748,8 @@ struct client {
 	size_t		 prompt_index;
 	void		 (*prompt_callback)(void *, char *);
 	void		*prompt_data;
+	u_int		 prompt_hindex;
+	ARRAY_DECL(, char *) prompt_hdata;
 
 	struct session	*session;
 };