NetBSD/usr.bin/vi/ex/ex_map.c

161 lines
4.8 KiB
C

/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)ex_map.c 8.19 (Berkeley) 8/17/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <ctype.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include "compat.h"
#include <curses.h>
#include <db.h>
#include <regex.h>
#include "vi.h"
#include "excmd.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.
*/
int
ex_map(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
enum seqtype stype;
CHAR_T *input, *p;
stype = F_ISSET(cmdp, E_FORCE) ? SEQ_INPUT : SEQ_COMMAND;
switch (cmdp->argc) {
case 0:
if (seq_dump(sp, stype, 1) == 0)
msgq(sp, M_INFO, "No %s map entries",
stype == SEQ_INPUT ? "input" : "command");
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, and call the screen specific routine.
* Note, if the screen specific routine is able to create the
* mapping, the SEQ_FUNCMAP type stays around, maybe the next screen
* type can get it right.
*/
if (input[0] == '#') {
for (p = input + 1; 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))
return (1);
return (sp->s_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, "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.
*/
int
ex_unmap(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
if (seq_delete(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len,
F_ISSET(cmdp, E_FORCE) ? SEQ_INPUT : SEQ_COMMAND)) {
msgq(sp, M_INFO, "\"%s\" isn't mapped", cmdp->argv[0]->bp);
return (1);
}
return (0);
}
/*
* map_save --
* Save the mapped sequences to a file.
*/
int
map_save(sp, fp)
SCR *sp;
FILE *fp;
{
if (seq_save(sp, fp, "map ", SEQ_COMMAND))
return (1);
return (seq_save(sp, fp, "map! ", SEQ_INPUT));
}