text: /* $OpenBSD$ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
   *
   * 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 <stdlib.h>
  #include <string.h>
  
  #include "tmux.h"
  
  /*
   * Bind a key to a command, this recurses through cmd_*.
   */
  
  enum cmd_retval	 cmd_bind_key_exec(struct cmd *, struct cmd_q *);
  
  enum cmd_retval	 cmd_bind_key_mode_table(struct cmd *, struct cmd_q *,
  		     key_code);
  
  const struct cmd_entry cmd_bind_key_entry = {
  	.name = "bind-key",
  	.alias = "bind",
  
  	.args = { "cnrt:T:", 1, -1 },
  	.usage = "[-cnr] [-t mode-table] [-T key-table] key command "
  		 "[arguments]",
  
  	.flags = 0,
  	.exec = cmd_bind_key_exec
  };
  
  enum cmd_retval
  cmd_bind_key_exec(struct cmd *self, struct cmd_q *cmdq)
  {
  	struct args	*args = self->args;
  	char		*cause;
  	struct cmd_list	*cmdlist;
  	key_code	 key;
  	const char	*tablename;
  
  	if (args_has(args, 't')) {
  		if (args->argc != 2 && args->argc != 3) {
  			cmdq_error(cmdq, "not enough arguments");
  			return (CMD_RETURN_ERROR);
  		}
  	} else {
  		if (args->argc < 2) {
  			cmdq_error(cmdq, "not enough arguments");
  			return (CMD_RETURN_ERROR);
  		}
  	}
  
  	key = key_string_lookup_string(args->argv[0]);
  	if (key == KEYC_NONE || key == KEYC_UNKNOWN) {
  		cmdq_error(cmdq, "unknown key: %s", args->argv[0]);
  		return (CMD_RETURN_ERROR);
  	}
  
  	if (args_has(args, 't'))
  		return (cmd_bind_key_mode_table(self, cmdq, key));
  
  	if (args_has(args, 'T'))
  		tablename = args_get(args, 'T');
  	else if (args_has(args, 'n'))
  		tablename = "root";
  	else
  		tablename = "prefix";
  
  	cmdlist = cmd_list_parse(args->argc - 1, args->argv + 1, NULL, 0,
  	    &cause);
  	if (cmdlist == NULL) {
  		cmdq_error(cmdq, "%s", cause);
  		free(cause);
  		return (CMD_RETURN_ERROR);
  	}
  
  	key_bindings_add(tablename, key, args_has(args, 'r'), cmdlist);
  	return (CMD_RETURN_NORMAL);
  }
  
  enum cmd_retval
  cmd_bind_key_mode_table(struct cmd *self, struct cmd_q *cmdq, key_code key)
  {
  	struct args			*args = self->args;
  	const char			*tablename;
  	const struct mode_key_table	*mtab;
  	struct mode_key_binding		*mbind, mtmp;
  	enum mode_key_cmd		 cmd;
  	const char			*arg;
  
  	tablename = args_get(args, 't');
  	if ((mtab = mode_key_findtable(tablename)) == NULL) {
  		cmdq_error(cmdq, "unknown key table: %s", tablename);
  		return (CMD_RETURN_ERROR);
  	}
  
  	cmd = mode_key_fromstring(mtab->cmdstr, args->argv[1]);
  	if (cmd == MODEKEY_NONE) {
  		cmdq_error(cmdq, "unknown command: %s", args->argv[1]);
  		return (CMD_RETURN_ERROR);
  	}
  
  	switch (cmd) {
  	case MODEKEYCOPY_APPENDSELECTION:
  	case MODEKEYCOPY_COPYSELECTION:
  	case MODEKEYCOPY_STARTNAMEDBUFFER:
  		if (args->argc == 2)
  			arg = NULL;
  		else {
  			arg = args->argv[2];
  			if (strcmp(arg, "-x") != 0) {
  				cmdq_error(cmdq, "unknown argument");
  				return (CMD_RETURN_ERROR);
  			}
  		}
  		break;
  	case MODEKEYCOPY_COPYPIPE:
  		if (args->argc != 3) {
  			cmdq_error(cmdq, "no argument given");
  			return (CMD_RETURN_ERROR);
  		}
  		arg = args->argv[2];
  		break;
  	default:
  		if (args->argc != 2) {
  			cmdq_error(cmdq, "no argument allowed");
  			return (CMD_RETURN_ERROR);
  		}
  		arg = NULL;
  		break;
  	}
  
  	mtmp.key = key;
  	mtmp.mode = !!args_has(args, 'c');
  	if ((mbind = RB_FIND(mode_key_tree, mtab->tree, &mtmp)) == NULL) {
  		mbind = xmalloc(sizeof *mbind);
  		mbind->key = mtmp.key;
  		mbind->mode = mtmp.mode;
  		RB_INSERT(mode_key_tree, mtab->tree, mbind);
  	}
  	mbind->cmd = cmd;
  	mbind->arg = arg != NULL ? xstrdup(arg) : NULL;
  	return (CMD_RETURN_NORMAL);
  }
  