Add a command queue to standardize and simplify commands that call other

commands and allow a command to block execution of subsequent commands. This
allows run-shell and if-shell to be synchronous which has been much requested.

Each client has a default command queue and commands are consumed one at a time
from it. A command may suspend execution from the queue by returning
CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example
run-shell does this from the callback that is fired after the job is freed.

When the command queue becomes empty, command clients are automatically exited
(unless attaching). A callback is also fired - this is used for nested commands
in, for example, if-shell which can block execution of the client's cmdq until
a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the old
curclient/cmdclient distinction - a cmdq is bound to one client (or none if in
the configuration file), this is a command client if c->session is NULL
otherwise an attached client.

1 files changed, 9 insertions, 9 deletions

diff --git a/cmd-switch-client.c b/cmd-switch-client.c
index 29a3d788..9adb2146 100644
--- a/cmd-switch-client.c
+++ b/cmd-switch-client.c
@@ -28,7 +28,7 @@
  */
 
 void		 cmd_switch_client_key_binding(struct cmd *, int);
-enum cmd_retval	 cmd_switch_client_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_switch_client_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_switch_client_entry = {
 	"switch-client", "switchc",
@@ -58,45 +58,45 @@ cmd_switch_client_key_binding(struct cmd *self, int key)
 }
 
 enum cmd_retval
-cmd_switch_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+cmd_switch_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct client	*c;
 	struct session	*s;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 'c'), 0)) == NULL)
+	if ((c = cmd_find_client(cmdq, args_get(args, 'c'), 0)) == NULL)
 		return (CMD_RETURN_ERROR);
 
 	if (args_has(args, 'r')) {
 		if (c->flags & CLIENT_READONLY) {
 			c->flags &= ~CLIENT_READONLY;
-			ctx->info(ctx, "made client writable");
+			cmdq_info(cmdq, "made client writable");
 		} else {
 			c->flags |= CLIENT_READONLY;
-			ctx->info(ctx, "made client read-only");
+			cmdq_info(cmdq, "made client read-only");
 		}
 	}
 
 	s = NULL;
 	if (args_has(args, 'n')) {
 		if ((s = session_next_session(c->session)) == NULL) {
-			ctx->error(ctx, "can't find next session");
+			cmdq_error(cmdq, "can't find next session");
 			return (CMD_RETURN_ERROR);
 		}
 	} else if (args_has(args, 'p')) {
 		if ((s = session_previous_session(c->session)) == NULL) {
-			ctx->error(ctx, "can't find previous session");
+			cmdq_error(cmdq, "can't find previous session");
 			return (CMD_RETURN_ERROR);
 		}
 	} else if (args_has(args, 'l')) {
 		if (c->last_session != NULL && session_alive(c->last_session))
 			s = c->last_session;
 		if (s == NULL) {
-			ctx->error(ctx, "can't find last session");
+			cmdq_error(cmdq, "can't find last session");
 			return (CMD_RETURN_ERROR);
 		}
 	} else
-		s = cmd_find_session(ctx, args_get(args, 't'), 0);
+		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 	if (s == NULL)
 		return (CMD_RETURN_ERROR);