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, 7 insertions, 7 deletions

diff --git a/cmd-refresh-client.c b/cmd-refresh-client.c
index 7bec5205..7d9d539f 100644
--- a/cmd-refresh-client.c
+++ b/cmd-refresh-client.c
@@ -24,7 +24,7 @@
  * Refresh client.
  */
 
-enum cmd_retval	 cmd_refresh_client_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_refresh_client_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_refresh_client_entry = {
 	"refresh-client", "refresh",
@@ -37,32 +37,32 @@ const struct cmd_entry cmd_refresh_client_entry = {
 };
 
 enum cmd_retval
-cmd_refresh_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+cmd_refresh_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct client	*c;
 	const char	*size;
 	u_int		 w, h;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 't'), 0)) == NULL)
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
 		return (CMD_RETURN_ERROR);
 
 	if (args_has(args, 'C')) {
 		if ((size = args_get(args, 'C')) == NULL) {
-			ctx->error(ctx, "missing size");
+			cmdq_error(cmdq, "missing size");
 			return (CMD_RETURN_ERROR);
 		}
 		if (sscanf(size, "%u,%u", &w, &h) != 2) {
-			ctx->error(ctx, "bad size argument");
+			cmdq_error(cmdq, "bad size argument");
 			return (CMD_RETURN_ERROR);
 		}
 		if (w < PANE_MINIMUM || w > 5000 ||
 		    h < PANE_MINIMUM || h > 5000) {
-			ctx->error(ctx, "size too small or too big");
+			cmdq_error(cmdq, "size too small or too big");
 			return (CMD_RETURN_ERROR);
 		}
 		if (!(c->flags & CLIENT_CONTROL)) {
-			ctx->error(ctx, "not a control client");
+			cmdq_error(cmdq, "not a control client");
 			return (CMD_RETURN_ERROR);
 		}
 		if (tty_set_size(&c->tty, w, h))