2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid[] = "@(#)ex_edit.c 10.10 (Berkeley) 4/27/96";
16 #include <sys/types.h>
17 #include <sys/queue.h>
20 #include <bitstring.h>
27 #include "../common/common.h"
30 static int ex_N_edit __P((SCR *, EXCMD *, FREF *, int));
33 * ex_edit -- :e[dit][!] [+cmd] [file]
34 * :ex[!] [+cmd] [file]
35 * :vi[sual][!] [+cmd] [file]
37 * Edit a file; if none specified, re-edit the current file. The third
38 * form of the command can only be executed while in vi mode. See the
39 * hack in ex.c:ex_cmd().
42 * Historic vi didn't permit the '+' command form without specifying
43 * a file name as well. This seems unreasonable, so we support it
46 * PUBLIC: int ex_edit __P((SCR *, EXCMD *));
59 * If the name has been changed, we edit that file, not the
60 * original name. If the user was editing a temporary file
61 * (or wasn't editing any file), create another one. The
62 * reason for not reusing temporary files is that there is
63 * special exit processing of them, and reuse is tricky.
66 if (sp->ep == NULL || F_ISSET(frp, FR_TMPFILE)) {
67 if ((frp = file_add(sp, NULL)) == NULL)
75 if ((frp = file_add(sp, cmdp->argv[0]->bp)) == NULL)
79 set_alt_name(sp, cmdp->argv[0]->bp);
85 if (F_ISSET(cmdp, E_NEWSCREEN))
86 return (ex_N_edit(sp, cmdp, frp, attach));
89 * Check for modifications.
92 * Contrary to POSIX 1003.2-1992, autowrite did not affect :edit.
94 if (file_m2(sp, FL_ISSET(cmdp->iflags, E_C_FORCE)))
98 if (file_init(sp, frp, NULL, (setalt ? FS_SETALT : 0) |
99 (FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0)))
102 F_SET(sp, SC_FSWITCH);
108 * New screen version of ex_edit.
111 ex_N_edit(sp, cmdp, frp, attach)
119 /* Get a new screen. */
120 if (screen_init(sp->gp, sp, &new))
122 if (vs_split(sp, new, 0)) {
123 (void)screen_end(new);
127 /* Get a backing file. */
129 /* Copy file state, keep the screen and cursor the same. */
134 new->frp->flags = sp->frp->flags;
138 } else if (file_init(new, frp, NULL,
139 (FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0))) {
140 (void)vs_discard(new, NULL);
141 (void)screen_end(new);
145 /* Create the argument list. */
146 new->cargv = new->argv = ex_buildargv(sp, NULL, frp->name);
148 /* Set up the switch. */
150 F_SET(sp, SC_SSWITCH);