text: /* $OpenBSD: cmd-unbind-key.c,v 1.10 2011/01/10 21:28:47 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
   * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
   * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <sys/types.h>
  
  #include "tmux.h"
  
  /*
   * Unbind key from command.
   */
  
  int	cmd_unbind_key_check(struct args *);
  int	cmd_unbind_key_exec(struct cmd *, struct cmd_ctx *);
  
  int	cmd_unbind_key_table(struct cmd *, struct cmd_ctx *, int);
  
  const struct cmd_entry cmd_unbind_key_entry = {
  	"unbind-key", "unbind",
  	"acnt:", 0, 1,
  	"[-acn] [-t key-table] key",
  	0,
  	NULL,
  	cmd_unbind_key_check,
  	cmd_unbind_key_exec
  };
  
  int
  cmd_unbind_key_check(struct args *args)
  {
  	if (args_has(args, 'a') && (args->argc != 0 || args_has(args, 't')))
  	    return (-1);
  	if (!args_has(args, 'a') && args->argc != 1)
  		return (-1);
  	return (0);
  }
  
  int
  cmd_unbind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
  {
  	struct args		*args = self->args;
  	struct key_binding	*bd;
  	int			 key;
  
  	if (args_has(args, 'a')) {
  		while (!SPLAY_EMPTY(&key_bindings)) {
  			bd = SPLAY_ROOT(&key_bindings);
  			SPLAY_REMOVE(key_bindings, &key_bindings, bd);
  			cmd_list_free(bd->cmdlist);
  			xfree(bd);
  		}
  		return (0);
  	}
  
  	key = key_string_lookup_string(args->argv[0]);
  	if (key == KEYC_NONE) {
  		ctx->error(ctx, "unknown key: %s", args->argv[0]);
  		return (-1);
  	}
  
  	if (args_has(args, 't'))
  		return (cmd_unbind_key_table(self, ctx, key));
  
  	if (!args_has(args, 'n'))
  		key |= KEYC_PREFIX;
  	key_bindings_remove(key);
  	return (0);
  }
  
  int
  cmd_unbind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
  {
  	struct args			*args = self->args;
  	const char			*tablename;
  	const struct mode_key_table	*mtab;
  	struct mode_key_binding		*mbind, mtmp;
  
  	tablename = args_get(args, 't');
  	if ((mtab = mode_key_findtable(tablename)) == NULL) {
  		ctx->error(ctx, "unknown key table: %s", tablename);
  		return (-1);
  	}
  
  	mtmp.key = key;
  	mtmp.mode = !!args_has(args, 'c');
  	if ((mbind = SPLAY_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
  		SPLAY_REMOVE(mode_key_tree, mtab->tree, mbind);
  		xfree(mbind);
  	}
  	return (0);
  }
  