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mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
freebsd/usr.bin/vi/ex/ex_args.c
1995-05-30 06:41:30 +00:00

264 lines
6.5 KiB
C

/*-
* Copyright (c) 1991, 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_args.c 8.29 (Berkeley) 8/17/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include "compat.h"
#include <db.h>
#include <regex.h>
#include "vi.h"
#include "excmd.h"
/*
* ex_next -- :next [+cmd] [files]
* Edit the next file, optionally setting the list of files.
*
* !!!
* The :next command behaved differently from the :rewind command in
* historic vi. See nvi/docs/autowrite for details, but the basic
* idea was that it ignored the force flag if the autowrite flag was
* set. This implementation handles them all identically.
*/
int
ex_next(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
ARGS **argv, **pc;
FREF *frp;
int noargs;
char **ap;
if (file_m1(sp, ep, F_ISSET(cmdp, E_FORCE), FS_ALL | FS_POSSIBLE))
return (1);
/*
* If the first argument is a plus sign, '+', it's an initial
* ex command.
*/
argv = cmdp->argv;
if (cmdp->argc && argv[0]->bp[0] == '+') {
--cmdp->argc;
pc = argv++;
} else
pc = NULL;
/* Any other arguments are a replacement file list. */
if (cmdp->argc) {
/* Free the current list. */
if (!F_ISSET(sp, S_ARGNOFREE) && sp->argv != NULL) {
for (ap = sp->argv; *ap != NULL; ++ap)
free(*ap);
free(sp->argv);
}
F_CLR(sp, S_ARGNOFREE | S_ARGRECOVER);
sp->cargv = NULL;
/* Create a new list. */
CALLOC_RET(sp,
sp->argv, char **, cmdp->argc + 1, sizeof(char *));
for (ap = sp->argv,
argv = cmdp->argv; argv[0]->len != 0; ++ap, ++argv)
if ((*ap =
v_strdup(sp, argv[0]->bp, argv[0]->len)) == NULL)
return (1);
*ap = NULL;
/* Switch to the first one. */
sp->cargv = sp->argv;
if ((frp = file_add(sp, *sp->cargv)) == NULL)
return (1);
noargs = 0;
} else {
if (sp->cargv == NULL || sp->cargv[1] == NULL) {
msgq(sp, M_ERR, "No more files to edit");
return (1);
}
if ((frp = file_add(sp, sp->cargv[1])) == NULL)
return (1);
if (F_ISSET(sp, S_ARGRECOVER))
F_SET(frp, FR_RECOVER);
noargs = 1;
}
if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
return (1);
if (noargs)
++sp->cargv;
/* Push the initial command onto the stack. */
if (pc != NULL)
if (IN_EX_MODE(sp))
(void)term_push(sp, pc[0]->bp, pc[0]->len, 0);
else if (IN_VI_MODE(sp)) {
(void)term_push(sp, "\n", 1, 0);
(void)term_push(sp, pc[0]->bp, pc[0]->len, 0);
(void)term_push(sp, ":", 1, 0);
(void)file_lline(sp, sp->ep, &sp->frp->lno);
F_SET(sp->frp, FR_CURSORSET);
}
F_SET(sp, S_FSWITCH);
return (0);
}
/*
* ex_prev -- :prev
* Edit the previous file.
*/
int
ex_prev(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
FREF *frp;
if (file_m1(sp, ep, F_ISSET(cmdp, E_FORCE), FS_ALL | FS_POSSIBLE))
return (1);
if (sp->cargv == sp->argv) {
msgq(sp, M_ERR, "No previous files to edit");
return (1);
}
if ((frp = file_add(sp, sp->cargv[-1])) == NULL)
return (1);
if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
return (1);
--sp->cargv;
F_SET(sp, S_FSWITCH);
return (0);
}
/*
* ex_rew -- :rew
* Re-edit the list of files.
*/
int
ex_rew(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
FREF *frp;
/*
* !!!
* Historic practice -- you can rewind to the current file.
*/
if (sp->argv == NULL) {
msgq(sp, M_ERR, "No previous files to rewind");
return (1);
}
if (file_m1(sp, ep, F_ISSET(cmdp, E_FORCE), FS_ALL | FS_POSSIBLE))
return (1);
/*
* !!!
* Historic practice, start at the beginning of the file.
*/
for (frp = sp->frefq.cqh_first;
frp != (FREF *)&sp->frefq; frp = frp->q.cqe_next)
F_CLR(frp, FR_CURSORSET | FR_FNONBLANK);
/* Switch to the first one. */
sp->cargv = sp->argv;
if ((frp = file_add(sp, *sp->cargv)) == NULL)
return (1);
if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
return (1);
F_SET(sp, S_FSWITCH);
return (0);
}
/*
* ex_args -- :args
* Display the list of files.
*/
int
ex_args(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
int cnt, col, len, sep;
char **ap;
if (sp->argv == NULL) {
(void)ex_printf(EXCOOKIE, "No file list to display.\n");
return (0);
}
col = len = sep = 0;
for (cnt = 1, ap = sp->argv; *ap != NULL; ++ap) {
col += len = strlen(*ap) + sep + (ap == sp->cargv ? 2 : 0);
if (col >= sp->cols - 1) {
col = len;
sep = 0;
(void)ex_printf(EXCOOKIE, "\n");
} else if (cnt != 1) {
sep = 1;
(void)ex_printf(EXCOOKIE, " ");
}
++cnt;
if (ap == sp->cargv)
(void)ex_printf(EXCOOKIE, "[%s]", *ap);
else
(void)ex_printf(EXCOOKIE, "%s", *ap);
}
(void)ex_printf(EXCOOKIE, "\n");
return (0);
}