/*- * 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 8.16 (Berkeley) 3/14/94"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include "compat.h" #include #include #include "vi.h" #include "excmd.h" /* * ex_next -- :next [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; FREF *frp; char *name; MODIFY_RET(sp, ep, F_ISSET(cmdp, E_FORCE)); if (cmdp->argc) { /* Mark all the current files as ignored. */ for (frp = sp->frefq.cqh_first; frp != (FREF *)&sp->frefq; frp = frp->q.cqe_next) F_SET(frp, FR_IGNORE); /* Add the new files into the file list. */ for (argv = cmdp->argv; argv[0]->len != 0; ++argv) if (file_add(sp, NULL, argv[0]->bp, 0) == NULL) return (1); if ((frp = file_first(sp)) == NULL) return (1); } else if ((frp = file_next(sp, sp->a_frp)) == NULL) { msgq(sp, M_ERR, "No more files to edit."); return (1); } /* * There's a tricky sequence, where the user edits two files, e.g. * "x" and "y". While in "x", they do ":e y|:f foo", which changes * the name of that FRP entry. Then, the :n command finds the file * "y" with a name change. If the file name has been changed, get * a new FREF for the original file name, and make it be the one that * is displayed in the argument list, not the one with the name change. */ if (frp->cname != NULL) { F_SET(frp, FR_IGNORE); name = frp->name == NULL ? frp->tname : frp->name; if ((frp = file_add(sp, sp->a_frp, name, 0)) == NULL) return (1); } if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE))) return (1); sp->a_frp = frp; 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; char *name; MODIFY_RET(sp, ep, F_ISSET(cmdp, E_FORCE)); if ((frp = file_prev(sp, sp->a_frp)) == NULL) { msgq(sp, M_ERR, "No previous files to edit."); return (1); } /* See comment in ex_next(). */ if (frp->cname != NULL) { F_SET(frp, FR_IGNORE); name = frp->name == NULL ? frp->tname : frp->name; if ((frp = file_add(sp, frp, name, 0)) == NULL) return (1); } if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE))) return (1); sp->a_frp = frp; 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, *tfrp; /* * !!! * Historic practice -- you can rewind to the current file. */ if ((frp = file_first(sp)) == NULL) { msgq(sp, M_ERR, "No previous files to rewind."); return (1); } MODIFY_RET(sp, ep, F_ISSET(cmdp, E_FORCE)); /* * !!! * Historic practice, turn off the edited bit. The :next and :prev * code will discard any name changes, so ignore them here. Start * at the beginning of the file, too. */ for (tfrp = sp->frefq.cqh_first; tfrp != (FREF *)&sp->frefq; tfrp = tfrp->q.cqe_next) F_CLR(tfrp, FR_CHANGEWRITE | FR_CURSORSET | FR_EDITED); if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE))) return (1); sp->a_frp = frp; 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; { FREF *frp; int cnt, col, iscur, len, nlen, sep; char *name; /* * !!! * Ignore files that aren't in the "argument" list unless they are the * one we're currently editing. I'm not sure this is right, but the * historic vi behavior of not showing the current file if it was the * result of a ":e" command, or if the file name was changed was wrong. * This is actually pretty tricky, don't modify it without thinking it * through. There have been a lot of problems in here. * * Also, historic practice was to display the original name of the file * even if the user had used a file command to change the file name. * Confusing, at best. We show both names: the original as that's what * the user will get in a next, prev or rewind, and the new one since * that's what the user is actually editing now. * * When we find the "argument" FREF, i.e. the current location in the * user's argument list, if it's not the same as the current FREF, we * display the current FREF as following the argument in the list. * This means that if the user edits three files, "x", "y" and "z", and * then does a :e command in the file "x" to edit "z", "z" will appear * in the list twice. */ col = len = sep = 0; for (cnt = 1, frp = sp->frefq.cqh_first; frp != (FREF *)&sp->frefq; frp = frp->q.cqe_next) { iscur = 0; /* * If the last argument FREF structure, and we're editing * it, set the current bit. Otherwise, we'll display it, * then the file we're editing, and the latter will have * the current bit set. */ if (frp == sp->a_frp) { if (frp == sp->frp && frp->cname == NULL) iscur = 1; } else if (F_ISSET(frp, FR_IGNORE)) continue; name = frp->name == NULL ? frp->tname : frp->name; /* * Mistake. The user edited a temporary file (vi /tmp), then * switched to another file (:e file). The argument FREF is * pointing to the temporary file, but it doesn't have a name. * Gracefully recover through the creative use of goto's. */ if (name == NULL) goto testcur; extra: nlen = strlen(name); col += len = nlen + sep + (iscur ? 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 (iscur) (void)ex_printf(EXCOOKIE, "[%s]", name); else { (void)ex_printf(EXCOOKIE, "%s", name); testcur: if (frp == sp->a_frp) { if (frp != sp->frp) name = FILENAME(sp->frp); else name = frp->cname; iscur = 1; goto extra; } } } /* This should never happen; left in because it's been known to. */ if (cnt == 1) (void)ex_printf(EXCOOKIE, "No files.\n"); else (void)ex_printf(EXCOOKIE, "\n"); return (0); }