Return to ex_map.c CVS log

Up to [local] / src / usr.bin / vi / ex

rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: ex_map.c,v 1.5 2009/10/27 23:59:47 deraadt Exp $	*/

/*-
 * Copyright (c) 1992, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1992, 1993, 1994, 1995, 1996
 *	Keith Bostic.  All rights reserved.
 *
 * See the LICENSE file for redistribution information.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/queue.h>

#include <bitstring.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../common/common.h"

/*
 * ex_map -- :map[!] [input] [replacement]
 *	Map a key/string or display mapped keys.
 *
 * Historical note:
 *	Historic vi maps were fairly bizarre, and likely to differ in
 *	very subtle and strange ways from this implementation.  Two
 *	things worth noting are that vi would often hang or drop core
 *	if the map was strange enough (ex: map X "xy$@x^V), or, simply
 *	not work.  One trick worth remembering is that if you put a
 *	mark at the start of the map, e.g. map X mx"xy ...), or if you
 *	put the map in a .exrc file, things would often work much better.
 *	No clue why.
 *
 * PUBLIC: int ex_map(SCR *, EXCMD *);
 */
int
ex_map(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	seq_t stype;
	CHAR_T *input, *p;

	stype = FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND;

	switch (cmdp->argc) {
	case 0:
		if (seq_dump(sp, stype, 1) == 0)
			msgq(sp, M_INFO, stype == SEQ_INPUT ?
			    "132|No input map entries" :
			    "133|No command map entries");
		return (0);
	case 2:
		input = cmdp->argv[0]->bp;
		break;
	default:
		abort();
	}

	/*
	 * If the mapped string is #[0-9]* (and wasn't quoted) then store the
	 * function key mapping.  If the screen specific routine has been set,
	 * call it as well.  Note, the SEQ_FUNCMAP type is persistent across
	 * screen types, maybe the next screen type will get it right.
	 */
	if (input[0] == '#' && isdigit(input[1])) {
		for (p = input + 2; isdigit(*p); ++p);
		if (p[0] != '\0')
			goto nofunc;

		if (seq_set(sp, NULL, 0, input, cmdp->argv[0]->len,
		    cmdp->argv[1]->bp, cmdp->argv[1]->len, stype,
		    SEQ_FUNCMAP | SEQ_USERDEF))
			return (1);
		return (sp->gp->scr_fmap == NULL ? 0 :
		    sp->gp->scr_fmap(sp, stype, input, cmdp->argv[0]->len,
		    cmdp->argv[1]->bp, cmdp->argv[1]->len));
	}

	/* Some single keys may not be remapped in command mode. */
nofunc:	if (stype == SEQ_COMMAND && input[1] == '\0')
		switch (KEY_VAL(sp, input[0])) {
		case K_COLON:
		case K_ESCAPE:
		case K_NL:
			msgq(sp, M_ERR,
			    "134|The %s character may not be remapped",
			    KEY_NAME(sp, input[0]));
			return (1);
		}
	return (seq_set(sp, NULL, 0, input, cmdp->argv[0]->len,
	    cmdp->argv[1]->bp, cmdp->argv[1]->len, stype, SEQ_USERDEF));
}

/*
 * ex_unmap -- (:unmap[!] key)
 *	Unmap a key.
 *
 * PUBLIC: int ex_unmap(SCR *, EXCMD *);
 */
int
ex_unmap(sp, cmdp)
	SCR *sp;
	EXCMD *cmdp;
{
	if (seq_delete(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len,
	    FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND)) {
		msgq_str(sp, M_INFO,
		    cmdp->argv[0]->bp, "135|\"%s\" isn't currently mapped");
		return (1);
	}
	return (0);
}