276 lines
8.1 KiB
C
276 lines
8.1 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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/* from: static char sccsid[] = "@(#)ex_args.c 8.13 (Berkeley) 12/20/93"; */
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static char *rcsid = "$Id: ex_args.c,v 1.2 1994/01/24 06:40:06 cgd Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "vi.h"
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#include "excmd.h"
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/*
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* ex_next -- :next [files]
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* Edit the next file, optionally setting the list of files.
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*
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* !!!
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* The :next command behaved differently from the :rewind command in
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* historic vi. See nvi/docs/autowrite for details, but the basic
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* idea was that it ignored the force flag if the autowrite flag was
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* set. This implementation handles them all identically.
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*/
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int
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ex_next(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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ARGS **argv;
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FREF *frp;
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char *name;
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MODIFY_CHECK(sp, ep, F_ISSET(cmdp, E_FORCE));
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if (cmdp->argc) {
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/* Mark all the current files as ignored. */
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for (frp = sp->frefq.cqh_first;
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frp != (FREF *)&sp->frefq; frp = frp->q.cqe_next)
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F_SET(frp, FR_IGNORE);
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/* Add the new files into the file list. */
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for (argv = cmdp->argv; argv[0]->len != 0; ++argv)
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if (file_add(sp, NULL, argv[0]->bp, 0) == NULL)
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return (1);
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if ((frp = file_first(sp)) == NULL)
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return (1);
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} else if ((frp = file_next(sp, sp->a_frp)) == NULL) {
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msgq(sp, M_ERR, "No more files to edit.");
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return (1);
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}
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/*
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* There's a tricky sequence, where the user edits two files, e.g.
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* "x" and "y". While in "x", they do ":e y|:f foo", which changes
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* the name of that FRP entry. Then, the :n command finds the file
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* "y" with a name change. If the file name has been changed, get
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* a new FREF for the original file name, and make it be the one that
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* is displayed in the argument list, not the one with the name change.
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*/
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if (frp->cname != NULL) {
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F_SET(frp, FR_IGNORE);
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name = frp->name == NULL ? frp->tname : frp->name;
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if ((frp = file_add(sp, sp->a_frp, name, 0)) == NULL)
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return (1);
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}
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if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
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return (1);
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sp->a_frp = frp;
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F_SET(sp, S_FSWITCH);
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return (0);
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}
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/*
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* ex_prev -- :prev
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* Edit the previous file.
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*/
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int
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ex_prev(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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FREF *frp;
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char *name;
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MODIFY_CHECK(sp, ep, F_ISSET(cmdp, E_FORCE));
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if ((frp = file_prev(sp, sp->a_frp)) == NULL) {
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msgq(sp, M_ERR, "No previous files to edit.");
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return (1);
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}
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/* See comment in ex_next(). */
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if (frp->cname != NULL) {
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F_SET(frp, FR_IGNORE);
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name = frp->name == NULL ? frp->tname : frp->name;
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if ((frp = file_add(sp, frp, name, 0)) == NULL)
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return (1);
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}
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if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
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return (1);
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sp->a_frp = frp;
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F_SET(sp, S_FSWITCH);
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return (0);
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}
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/*
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* ex_rew -- :rew
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* Re-edit the list of files.
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*/
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int
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ex_rew(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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FREF *frp, *tfrp;
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/*
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* !!!
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* Historic practice -- you can rewind to the current file.
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*/
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if ((frp = file_first(sp)) == NULL) {
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msgq(sp, M_ERR, "No previous files to rewind.");
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return (1);
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}
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MODIFY_CHECK(sp, ep, F_ISSET(cmdp, E_FORCE));
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/*
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* !!!
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* Historic practice, turn off the edited bit. The :next and :prev
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* code will discard any name changes, so ignore them here. Start
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* at the beginning of the file, too.
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*/
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for (tfrp = sp->frefq.cqh_first;
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tfrp != (FREF *)&sp->frefq; tfrp = tfrp->q.cqe_next)
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F_CLR(tfrp, FR_CHANGEWRITE | FR_CURSORSET | FR_EDITED);
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if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
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return (1);
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sp->a_frp = frp;
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F_SET(sp, S_FSWITCH);
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return (0);
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}
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/*
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* ex_args -- :args
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* Display the list of files.
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*/
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int
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ex_args(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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FREF *frp;
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int cnt, col, iscur, len, nlen, sep;
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char *name;
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/*
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* !!!
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* Ignore files that aren't in the "argument" list unless they are the
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* one we're currently editing. I'm not sure this is right, but the
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* historic vi behavior of not showing the current file if it was the
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* result of a ":e" command, or if the file name was changed was wrong.
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* This is actually pretty tricky, don't modify it without thinking it
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* through. There have been a lot of problems in here.
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*
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* Also, historic practice was to display the original name of the file
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* even if the user had used a file command to change the file name.
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* Confusing, at best. We show both names: the original as that's what
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* the user will get in a next, prev or rewind, and the new one since
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* that's what the user is actually editing now.
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*
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* When we find the "argument" FREF, i.e. the current location in the
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* user's argument list, if it's not the same as the current FREF, we
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* display the current FREF as following the argument in the list.
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* This means that if the user edits three files, "x", "y" and "z", and
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* then does a :e command in the file "x" to edit "z", "z" will appear
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* in the list twice.
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*/
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col = len = sep = 0;
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for (cnt = 1, frp = sp->frefq.cqh_first;
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frp != (FREF *)&sp->frefq; frp = frp->q.cqe_next) {
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iscur = 0;
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/*
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* If the last argument FREF structure, and we're editing
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* it, set the current bit. Otherwise, we'll display it,
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* then the file we're editing, and the latter will have
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* the current bit set.
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*/
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if (frp == sp->a_frp) {
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if (frp == sp->frp && frp->cname == NULL)
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iscur = 1;
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} else if (F_ISSET(frp, FR_IGNORE))
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continue;
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name = frp->name == NULL ? frp->tname : frp->name;
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/*
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* Mistake. The user edited a temporary file (vi /tmp), then
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* switched to another file (:e file). The argument FREF is
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* pointing to the temporary file, but it doesn't have a name.
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* Gracefully recover through the creative use of goto's.
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*/
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if (name == NULL)
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goto testcur;
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extra: nlen = strlen(name);
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col += len = nlen + sep + (iscur ? 2 : 0);
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if (col >= sp->cols - 1) {
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col = len;
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sep = 0;
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(void)ex_printf(EXCOOKIE, "\n");
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} else if (cnt != 1) {
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sep = 1;
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(void)ex_printf(EXCOOKIE, " ");
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}
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++cnt;
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if (iscur)
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(void)ex_printf(EXCOOKIE, "[%s]", name);
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else {
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(void)ex_printf(EXCOOKIE, "%s", name);
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testcur: if (frp == sp->a_frp) {
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if (frp != sp->frp)
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name = FILENAME(sp->frp);
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else
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name = frp->cname;
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iscur = 1;
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goto extra;
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}
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}
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}
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/* This should never happen; left in because it's been known to. */
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if (cnt == 1)
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(void)ex_printf(EXCOOKIE, "No files.\n");
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else
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(void)ex_printf(EXCOOKIE, "\n");
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return (0);
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}
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