747 lines
19 KiB
C
747 lines
19 KiB
C
/*-
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* Copyright (c) 1992, 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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static char copyright[] =
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"@(#) Copyright (c) 1992, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/* from: static char sccsid[] = "@(#)main.c 8.65 (Berkeley) 1/23/94"; */
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static char *rcsid = "$Id: main.c,v 1.3 1994/03/02 01:54:08 cgd Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#ifdef __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include "vi.h"
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#include "excmd.h"
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#include "pathnames.h"
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#include "tag.h"
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static int exrc_isok __P((SCR *, char *, int));
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static void gs_end __P((GS *));
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static GS *gs_init __P((void));
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static void h_hup __P((int));
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static void h_term __P((int));
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static void h_winch __P((int));
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static void obsolete __P((char *[]));
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static void usage __P((int));
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GS *__global_list; /* GLOBAL: List of screens. */
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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extern int optind;
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extern char *optarg;
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static int reenter; /* STATIC: Re-entrancy check. */
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struct sigaction act;
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GS *gp;
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FREF *frp;
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SCR *sp;
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u_int flags, saved_vi_mode;
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int ch, eval, flagchk, readonly, silent, snapshot;
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char *excmdarg, *myname, *p, *rec_f, *tag_f, *trace_f, *wsizearg;
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char path[MAXPATHLEN];
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/* Stop if indirecting through a NULL pointer. */
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if (reenter++)
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abort();
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/* Set screen type and mode based on the program name. */
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readonly = 0;
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if ((myname = strrchr(*argv, '/')) == NULL)
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myname = *argv;
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else
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++myname;
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if (!strcmp(myname, "ex") || !strcmp(myname, "nex"))
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LF_INIT(S_EX);
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else {
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/* View is readonly. */
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if (!strcmp(myname, "view"))
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readonly = 1;
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LF_INIT(S_VI_CURSES);
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}
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saved_vi_mode = S_VI_CURSES;
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/* Convert old-style arguments into new-style ones. */
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obsolete(argv);
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/* Parse the arguments. */
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flagchk = '\0';
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excmdarg = rec_f = tag_f = trace_f = wsizearg = NULL;
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silent = 0;
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snapshot = 1;
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while ((ch = getopt(argc, argv, "c:eFlRr:sT:t:vw:x:")) != EOF)
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switch (ch) {
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case 'c': /* Run the command. */
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excmdarg = optarg;
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break;
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case 'e': /* Ex mode. */
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LF_CLR(S_SCREENS);
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LF_SET(S_EX);
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break;
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case 'F': /* No snapshot. */
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snapshot = 0;
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break;
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case 'l':
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if (flagchk != '\0' && flagchk != 'l')
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errx(1,
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"only one of -%c and -l may be specified.",
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flagchk);
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flagchk = 'l';
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break;
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case 'R': /* Readonly. */
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readonly = 1;
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break;
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case 'r': /* Recover. */
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if (flagchk == 'r')
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errx(1,
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"only one recovery file may be specified.");
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if (flagchk != '\0')
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errx(1,
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"only one of -%c and -r may be specified.",
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flagchk);
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flagchk = 'r';
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rec_f = optarg;
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break;
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case 's':
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if (!LF_ISSET(S_EX))
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errx(1, "-s only applicable to ex.");
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silent = 1;
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break;
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case 'T': /* Trace. */
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trace_f = optarg;
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break;
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case 't': /* Tag. */
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if (flagchk == 't')
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errx(1,
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"only one tag file may be specified.");
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if (flagchk != '\0')
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errx(1,
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"only one of -%c and -t may be specified.",
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flagchk);
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flagchk = 't';
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tag_f = optarg;
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break;
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case 'v': /* Vi mode. */
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LF_CLR(S_SCREENS);
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LF_SET(S_VI_CURSES);
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break;
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case 'w':
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wsizearg = optarg;
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break;
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case 'x':
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if (!strcmp(optarg, "aw")) {
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LF_CLR(S_SCREENS);
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LF_SET(S_VI_XAW);
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saved_vi_mode = S_VI_XAW;
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break;
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}
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/* FALLTHROUGH */
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case '?':
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default:
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usage(LF_ISSET(S_EX));
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}
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argc -= optind;
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argv += optind;
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/* Build and initialize the GS structure. */
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__global_list = gp = gs_init();
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if (snapshot)
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F_SET(gp, G_SNAPSHOT);
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/*
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* Build and initialize the first/current screen. This is a bit
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* tricky. If an error is returned, we may or may not have a
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* screen structure. If we have a screen structure, put it on a
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* display queue so that the error messages get displayed.
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*/
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if (screen_init(NULL, &sp, flags)) {
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if (sp != NULL)
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CIRCLEQ_INSERT_HEAD(&__global_list->dq, sp, q);
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goto err;
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}
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sp->saved_vi_mode = saved_vi_mode;
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CIRCLEQ_INSERT_HEAD(&__global_list->dq, sp, q);
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if (trace_f != NULL) {
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#ifdef DEBUG
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if ((gp->tracefp = fopen(optarg, "w")) == NULL)
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err(1, "%s", optarg);
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(void)fprintf(gp->tracefp, "\n===\ntrace: open %s\n", optarg);
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#else
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msgq(sp, M_ERR, "-T support not compiled into this version.");
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#endif
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}
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if (set_window_size(sp, 0, 0)) /* Set the window size. */
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goto err;
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if (opts_init(sp)) /* Options initialization. */
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goto err;
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if (readonly) /* Global read-only bit. */
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O_SET(sp, O_READONLY);
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if (silent) { /* Ex batch mode. */
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O_CLR(sp, O_AUTOPRINT);
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O_CLR(sp, O_PROMPT);
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O_CLR(sp, O_VERBOSE);
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O_CLR(sp, O_WARN);
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F_SET(sp, S_EXSILENT);
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}
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if (wsizearg != NULL) {
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ARGS *av[2], a, b;
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if (strtol(optarg, &p, 10) < 0 || *p)
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errx(1, "illegal window size -- %s", optarg);
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(void)snprintf(path, sizeof(path), "window=%s", optarg);
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a.bp = (CHAR_T *)path;
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a.len = strlen(path);
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b.bp = NULL;
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b.len = 0;
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av[0] = &a;
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av[1] = &b;
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if (opts_set(sp, av))
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msgq(sp, M_ERR,
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"Unable to set command line window option");
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}
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/* Keymaps, special keys, must follow option initializations. */
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if (term_init(sp))
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goto err;
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#ifdef DIGRAPHS
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if (digraph_init(sp)) /* Digraph initialization. */
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goto err;
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#endif
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/*
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* Source the system, environment, ~user and local .exrc values.
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* Vi historically didn't check ~user/.exrc if the environment
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* variable EXINIT was set. This is all done before the file is
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* read in because things in the .exrc information can set, for
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* example, the recovery directory.
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*
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* !!!
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* While nvi can handle any of the options settings of historic vi,
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* the converse is not true. Since users are going to have to have
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* files and environmental variables that work with both, we use nvi
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* versions if they exist, otherwise the historic ones.
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*/
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if (!silent) {
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if (exrc_isok(sp, _PATH_SYSEXRC, 1))
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(void)ex_cfile(sp, NULL, _PATH_SYSEXRC);
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/* Source the {N,}EXINIT environment variable. */
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if ((p = getenv("NEXINIT")) != NULL ||
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(p = getenv("EXINIT")) != NULL)
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if ((p = strdup(p)) == NULL) {
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msgq(sp, M_SYSERR, NULL);
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goto err;
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} else {
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(void)ex_icmd(sp, NULL, p, strlen(p));
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free(p);
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}
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else if ((p = getenv("HOME")) != NULL && *p) {
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(void)snprintf(path,
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sizeof(path), "%s/%s", p, _PATH_NEXRC);
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if (exrc_isok(sp, path, 0))
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(void)ex_cfile(sp, NULL, path);
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else {
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(void)snprintf(path,
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sizeof(path), "%s/%s", p, _PATH_EXRC);
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if (exrc_isok(sp, path, 0))
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(void)ex_cfile(sp, NULL, path);
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}
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}
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/*
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* !!!
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* According to O'Reilly ("Learning the VI Editor", Fifth Ed.,
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* May 1992, page 106), System V release 3.2 and later, has an
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* option "[no]exrc", causing vi to not "read .exrc files in
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* the current directory unless you first set the exrc option
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* in your home directory's .exrc file". Yeah, right. Did
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* someone actually believe that users would change their home
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* .exrc file based on whether or not they wanted to source the
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* current local .exrc? Or that users would want ALL the local
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* .exrc files on some systems, and none of them on others?
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* I think not.
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*
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* Apply the same tests to local .exrc files that are applied
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* to any other .exrc file.
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*/
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if (exrc_isok(sp, _PATH_EXRC, 0))
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(void)ex_cfile(sp, NULL, _PATH_EXRC);
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}
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/* List recovery files if -l specified. */
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if (flagchk == 'l')
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exit(rcv_list(sp));
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|
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/* Use a tag file or recovery file if specified. */
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if (tag_f != NULL && ex_tagfirst(sp, tag_f))
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goto err;
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else if (rec_f != NULL && rcv_read(sp, rec_f))
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goto err;
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|
|
|
/* Append any remaining arguments as file names. */
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if (*argv != NULL)
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for (; *argv != NULL; ++argv)
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if (file_add(sp, NULL, *argv, 0) == NULL)
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goto err;
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|
|
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/*
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* If no recovery or tag file, get an EXF structure.
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* If no argv file, use a temporary file.
|
|
*/
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if (tag_f == NULL && rec_f == NULL) {
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if ((frp = file_first(sp)) == NULL &&
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(frp = file_add(sp, NULL, NULL, 1)) == NULL)
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goto err;
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if (file_init(sp, frp, NULL, 0))
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goto err;
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}
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|
|
|
/* Set up the argument pointer. */
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sp->a_frp = sp->frp;
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|
|
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/*
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* Initialize the signals. Use sigaction(2), not signal(3), because
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* we don't want to always restart system calls on 4BSD systems. It
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* would be nice in some cases to restart system calls, but SA_RESTART
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* is a 4BSD extension so we can't use it.
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*
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* SIGWINCH, SIGHUP, SIGTERM:
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* Catch and set a global bit.
|
|
*/
|
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act.sa_handler = h_hup;
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sigemptyset(&act.sa_mask);
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act.sa_flags = 0;
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(void)sigaction(SIGHUP, &act, NULL);
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act.sa_handler = h_term;
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sigemptyset(&act.sa_mask);
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act.sa_flags = 0;
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(void)sigaction(SIGTERM, &act, NULL);
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act.sa_handler = h_winch;
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|
sigemptyset(&act.sa_mask);
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|
act.sa_flags = 0;
|
|
(void)sigaction(SIGWINCH, &act, NULL);
|
|
|
|
/*
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|
* SIGQUIT:
|
|
* Always ignore.
|
|
*/
|
|
act.sa_handler = SIG_IGN;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
(void)sigaction(SIGQUIT, &act, NULL);
|
|
|
|
/*
|
|
* If there's an initial command, push it on the command stack.
|
|
* Historically, it was always an ex command, not vi in vi mode
|
|
* or ex in ex mode. So, make it look like an ex command to vi.
|
|
*/
|
|
if (excmdarg != NULL)
|
|
if (IN_EX_MODE(sp)) {
|
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if (term_push(sp, excmdarg, strlen(excmdarg), 0, 0))
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goto err;
|
|
} else if (IN_VI_MODE(sp)) {
|
|
if (term_push(sp, "\n", 1, 0, 0))
|
|
goto err;
|
|
if (term_push(sp, excmdarg, strlen(excmdarg), 0, 0))
|
|
goto err;
|
|
if (term_push(sp, ":", 1, 0, 0))
|
|
goto err;
|
|
}
|
|
|
|
/* Vi reads from the terminal. */
|
|
if (!F_ISSET(gp, G_ISFROMTTY) && !F_ISSET(sp, S_EX)) {
|
|
msgq(sp, M_ERR, "Vi's standard input must be a terminal.");
|
|
goto err;
|
|
}
|
|
|
|
for (;;) {
|
|
if (sp->s_edit(sp, sp->ep))
|
|
goto err;
|
|
|
|
/*
|
|
* Edit the next screen on the display queue, or, move
|
|
* a screen from the hidden queue to the display queue.
|
|
*/
|
|
if ((sp = __global_list->dq.cqh_first) ==
|
|
(void *)&__global_list->dq)
|
|
if ((sp = __global_list->hq.cqh_first) !=
|
|
(void *)&__global_list->hq) {
|
|
CIRCLEQ_REMOVE(&sp->gp->hq, sp, q);
|
|
CIRCLEQ_INSERT_TAIL(&sp->gp->dq, sp, q);
|
|
} else
|
|
break;
|
|
|
|
/*
|
|
* The screen type may have changed -- reinitialize the
|
|
* functions in case it has.
|
|
*/
|
|
switch (F_ISSET(sp, S_SCREENS)) {
|
|
case S_EX:
|
|
if (sex_screen_init(sp))
|
|
goto err;
|
|
break;
|
|
case S_VI_CURSES:
|
|
if (svi_screen_init(sp))
|
|
goto err;
|
|
break;
|
|
case S_VI_XAW:
|
|
if (xaw_screen_init(sp))
|
|
goto err;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
eval = 0;
|
|
if (0)
|
|
err: eval = 1;
|
|
|
|
/*
|
|
* NOTE: sp may be GONE when the screen returns, so only
|
|
* the gp can be trusted.
|
|
*/
|
|
gs_end(gp);
|
|
|
|
/*
|
|
* XXX
|
|
* Make absolutely sure that the modes are restored correctly.
|
|
*
|
|
* This should no longer be needed, and it's here to handle what I
|
|
* believe are SunOS/Solaris curses problems. The problem is that
|
|
* for some unknown reason, when endwin() is called in the svi
|
|
* routines, it isn't resetting the terminal correctly. I have not
|
|
* been able to figure it out, so this resets the terminal to the
|
|
* right modes regardless. The problem is that, in most tty driver
|
|
* implementations, you can only reset the terminal modes once
|
|
* (changing from !ICANON to ICANON) without losing the re-parsing
|
|
* effect on the pending input. This means that this "fix" will make
|
|
* other systems mess up characters typed after the quit command to
|
|
* vi but before vi actually exits.
|
|
*/
|
|
if (F_ISSET(gp, G_HAVETTY) && F_ISSET(gp, G_ISFROMTTY))
|
|
(void)tcsetattr(STDIN_FILENO, TCSADRAIN, &gp->original_termios);
|
|
exit(eval);
|
|
}
|
|
|
|
/*
|
|
* gs_init --
|
|
* Build and initialize the GS structure.
|
|
*/
|
|
static GS *
|
|
gs_init()
|
|
{
|
|
GS *gp;
|
|
int fd;
|
|
|
|
CALLOC_NOMSG(NULL, gp, GS *, 1, sizeof(GS));
|
|
if (gp == NULL)
|
|
err(1, NULL);
|
|
|
|
CIRCLEQ_INIT(&gp->dq);
|
|
CIRCLEQ_INIT(&gp->hq);
|
|
LIST_INIT(&gp->msgq);
|
|
|
|
/* Structures shared by screens so stored in the GS structure. */
|
|
CALLOC_NOMSG(NULL, gp->tty, IBUF *, 1, sizeof(IBUF));
|
|
if (gp->tty == NULL)
|
|
err(1, NULL);
|
|
|
|
LIST_INIT(&gp->cutq);
|
|
LIST_INIT(&gp->seqq);
|
|
|
|
/* Set a flag if we're reading from the tty. */
|
|
if (isatty(STDIN_FILENO))
|
|
F_SET(gp, G_ISFROMTTY);
|
|
|
|
/*
|
|
* XXX
|
|
* Set a flag and don't do terminal sets/resets if the input isn't
|
|
* from a tty. Under all circumstances put reasonable things into
|
|
* the original_termios field, as some routines (seq.c:seq_save()
|
|
* and term.c:term_init()) want values for special characters.
|
|
*/
|
|
if (F_ISSET(gp, G_ISFROMTTY)) {
|
|
if (tcgetattr(STDIN_FILENO, &gp->original_termios) == -1)
|
|
err(1, "tcgetattr");
|
|
F_SET(gp, G_HAVETTY);
|
|
} else {
|
|
if ((fd = open(_PATH_TTY, O_RDONLY, 0)) != -1) {
|
|
if (tcgetattr(fd, &gp->original_termios) == -1)
|
|
err(1, "tcgetattr");
|
|
(void)close(fd);
|
|
F_SET(gp, G_HAVETTY);
|
|
}
|
|
}
|
|
|
|
return (gp);
|
|
}
|
|
|
|
|
|
/*
|
|
* gs_end --
|
|
* End the GS structure.
|
|
*/
|
|
static void
|
|
gs_end(gp)
|
|
GS *gp;
|
|
{
|
|
MSG *mp;
|
|
SCR *sp;
|
|
char *tty;
|
|
|
|
/* Reset anything that needs resetting. */
|
|
if (gp->flags & G_SETMODE) /* O_MESG */
|
|
if ((tty = ttyname(STDERR_FILENO)) == NULL)
|
|
warn("ttyname");
|
|
else if (chmod(tty, gp->origmode) < 0)
|
|
warn("%s", tty);
|
|
|
|
/* Ring the bell if scheduled. */
|
|
if (F_ISSET(gp, G_BELLSCHED))
|
|
(void)fprintf(stderr, "\07"); /* \a */
|
|
|
|
/* If there are any remaining screens, flush their messages. */
|
|
for (sp = __global_list->dq.cqh_first;
|
|
sp != (void *)&__global_list->dq; sp = sp->q.cqe_next)
|
|
for (mp = sp->msgq.lh_first;
|
|
mp != NULL && !(F_ISSET(mp, M_EMPTY)); mp = mp->q.le_next)
|
|
(void)fprintf(stderr, "%.*s\n", (int)mp->len, mp->mbuf);
|
|
for (sp = __global_list->hq.cqh_first;
|
|
sp != (void *)&__global_list->hq; sp = sp->q.cqe_next)
|
|
for (mp = sp->msgq.lh_first;
|
|
mp != NULL && !(F_ISSET(mp, M_EMPTY)); mp = mp->q.le_next)
|
|
(void)fprintf(stderr, "%.*s\n", (int)mp->len, mp->mbuf);
|
|
/* Flush messages on the global queue. */
|
|
for (mp = gp->msgq.lh_first;
|
|
mp != NULL && !(F_ISSET(mp, M_EMPTY)); mp = mp->q.le_next)
|
|
(void)fprintf(stderr, "%.*s\n", (int)mp->len, mp->mbuf);
|
|
|
|
if (gp->special_key != NULL)
|
|
FREE(gp->special_key, MAX_FAST_KEY);
|
|
|
|
/*
|
|
* DON'T FREE THE GLOBAL STRUCTURE -- WE DIDN'T TURN
|
|
* OFF SIGNALS/TIMERS, SO IT MAY STILL BE REFERENCED.
|
|
*/
|
|
}
|
|
|
|
/*
|
|
* h_hup --
|
|
* Handle SIGHUP.
|
|
*/
|
|
static void
|
|
h_hup(signo)
|
|
int signo;
|
|
{
|
|
F_SET(__global_list, G_SIGHUP);
|
|
|
|
/*
|
|
* If we're asleep, just die.
|
|
*
|
|
* XXX
|
|
* This isn't right if the windows are independent.
|
|
*/
|
|
if (F_ISSET(__global_list, G_SLEEPING))
|
|
rcv_hup();
|
|
}
|
|
|
|
/*
|
|
* h_term --
|
|
* Handle SIGTERM.
|
|
*/
|
|
static void
|
|
h_term(signo)
|
|
int signo;
|
|
{
|
|
F_SET(__global_list, G_SIGTERM);
|
|
|
|
/*
|
|
* If we're asleep, just die.
|
|
*
|
|
* XXX
|
|
* This isn't right if the windows are independent.
|
|
*/
|
|
if (F_ISSET(__global_list, G_SLEEPING))
|
|
rcv_term();
|
|
}
|
|
|
|
/*
|
|
* h_winch --
|
|
* Handle SIGWINCH.
|
|
*/
|
|
static void
|
|
h_winch(signo)
|
|
int signo;
|
|
{
|
|
F_SET(__global_list, G_SIGWINCH);
|
|
}
|
|
|
|
/*
|
|
* exrc_isok --
|
|
* Check a .exrc for source-ability.
|
|
*/
|
|
static int
|
|
exrc_isok(sp, path, rootok)
|
|
SCR *sp;
|
|
char *path;
|
|
int rootok;
|
|
{
|
|
struct stat sb;
|
|
uid_t uid;
|
|
char *emsg, buf[MAXPATHLEN];
|
|
|
|
/* Check for the file's existence. */
|
|
if (stat(path, &sb))
|
|
return (0);
|
|
|
|
/*
|
|
* !!!
|
|
* Historically, vi did not read the .exrc files if they were owned
|
|
* by someone other than the user, unless the undocumented option
|
|
* sourceany was set. We don't support the sourceany option. We
|
|
* check that the user (or root, for system files) owns the file and
|
|
* require that it not be writeable by anyone other than the owner.
|
|
*/
|
|
|
|
/* Owned by the user or root. */
|
|
uid = getuid();
|
|
if (rootok) {
|
|
if (sb.st_uid != uid && sb.st_uid != 0) {
|
|
emsg = "not owned by you or root";
|
|
goto err;
|
|
}
|
|
} else
|
|
if (sb.st_uid != uid) {
|
|
emsg = "not owned by you";
|
|
goto err;
|
|
}
|
|
|
|
/* Not writeable by anyone but the owner. */
|
|
if (sb.st_mode & (S_IWGRP | S_IWOTH)) {
|
|
emsg = "writeable by a user other than the owner";
|
|
err: if (strchr(path, '/') == NULL &&
|
|
getcwd(buf, sizeof(buf)) != NULL)
|
|
msgq(sp, M_ERR,
|
|
"%s/%s: not sourced: %s.", buf, path, emsg);
|
|
else
|
|
msgq(sp, M_ERR,
|
|
"%s: not sourced: %s.", path, emsg);
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
obsolete(argv)
|
|
char *argv[];
|
|
{
|
|
size_t len;
|
|
char *p, *myname;
|
|
|
|
/*
|
|
* Translate old style arguments into something getopt will like.
|
|
* Make sure it's not text space memory, because ex changes the
|
|
* strings.
|
|
* Change "+" into "-c$".
|
|
* Change "+<anything else>" into "-c<anything else>".
|
|
* Change "-" into "-s"
|
|
* Change "-r" into "-l"
|
|
*/
|
|
for (myname = argv[0]; *++argv;)
|
|
if (argv[0][0] == '+') {
|
|
if (argv[0][1] == '\0') {
|
|
MALLOC_NOMSG(NULL, argv[0], char *, 4);
|
|
if (argv[0] == NULL)
|
|
err(1, NULL);
|
|
(void)strcpy(argv[0], "-c$");
|
|
} else {
|
|
p = argv[0];
|
|
len = strlen(argv[0]);
|
|
MALLOC_NOMSG(NULL, argv[0], char *, len + 2);
|
|
if (argv[0] == NULL)
|
|
err(1, NULL);
|
|
argv[0][0] = '-';
|
|
argv[0][1] = 'c';
|
|
(void)strcpy(argv[0] + 2, p + 1);
|
|
}
|
|
} else if (argv[0][0] == '-') {
|
|
if (argv[0][1] == 'r') {
|
|
if (argv[0][2] == '\0' && argv[1] == NULL)
|
|
argv[0][1] = 'l';
|
|
} else if (argv[0][1] == '\0') {
|
|
MALLOC_NOMSG(NULL, argv[0], char *, 3);
|
|
if (argv[0] == NULL)
|
|
err(1, NULL);
|
|
(void)strcpy(argv[0], "-s");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(is_ex)
|
|
int is_ex;
|
|
{
|
|
#define EX_USAGE \
|
|
"usage: ex [-eFlRsv] [-c command] [-r file] [-t tag] [-w size] [-x aw]"
|
|
#define VI_USAGE \
|
|
"usage: vi [-eFlRv] [-c command] [-r file] [-t tag] [-w size] [-x aw]"
|
|
|
|
(void)fprintf(stderr, "%s\n", is_ex ? EX_USAGE : VI_USAGE);
|
|
exit(1);
|
|
}
|