06f01a55d2
No Minix-specific changes needed. Change-Id: I52e7a0b15553b6f067d82d568f3793c5b6ac2a77
206 lines
4.8 KiB
C
206 lines
4.8 KiB
C
/* $NetBSD: vis.c,v 1.15 2009/02/11 06:42:31 wiz Exp $ */
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/*-
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* Copyright (c) 1989, 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. 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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1989, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)vis.c 8.1 (Berkeley) 6/6/93";
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#endif
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__RCSID("$NetBSD: vis.c,v 1.15 2009/02/11 06:42:31 wiz Exp $");
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#endif /* not lint */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <err.h>
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#include <vis.h>
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#include "extern.h"
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static int eflags, fold, foldwidth = 80, none, markeol;
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#ifdef DEBUG
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int debug;
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#endif
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static char *extra;
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static void process(FILE *);
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int
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main(int argc, char *argv[])
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{
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FILE *fp;
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int ch;
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int rval;
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while ((ch = getopt(argc, argv, "bcde:F:fhlmnostw")) != -1)
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switch((char)ch) {
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case 'b':
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eflags |= VIS_NOSLASH;
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break;
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case 'c':
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eflags |= VIS_CSTYLE;
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break;
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#ifdef DEBUG
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case 'd':
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debug++;
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break;
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#endif
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case 'e':
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extra = optarg;
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break;
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case 'F':
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if ((foldwidth = atoi(optarg)) < 5) {
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errx(1, "can't fold lines to less than 5 cols");
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/* NOTREACHED */
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}
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markeol++;
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break;
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case 'f':
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fold++; /* fold output lines to 80 cols */
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break; /* using hidden newline */
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case 'h':
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eflags |= VIS_HTTPSTYLE;
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break;
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case 'l':
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markeol++; /* mark end of line with \$ */
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break;
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case 'm':
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eflags |= VIS_MIMESTYLE;
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if (foldwidth == 80)
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foldwidth = 76;
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break;
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case 'n':
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none++;
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break;
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case 'o':
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eflags |= VIS_OCTAL;
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break;
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case 's':
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eflags |= VIS_SAFE;
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break;
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case 't':
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eflags |= VIS_TAB;
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break;
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case 'w':
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eflags |= VIS_WHITE;
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break;
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case '?':
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default:
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(void)fprintf(stderr,
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"Usage: %s [-bcfhlmnostw] [-e extra]"
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" [-F foldwidth] [file ...]\n", getprogname());
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return 1;
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}
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if ((eflags & (VIS_HTTPSTYLE|VIS_MIMESTYLE)) ==
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(VIS_HTTPSTYLE|VIS_MIMESTYLE))
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errx(1, "Can't specify -m and -h at the same time");
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argc -= optind;
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argv += optind;
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rval = 0;
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if (*argv)
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while (*argv) {
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if ((fp = fopen(*argv, "r")) != NULL) {
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process(fp);
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(void)fclose(fp);
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} else {
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warn("%s", *argv);
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rval = 1;
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}
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argv++;
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}
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else
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process(stdin);
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return rval;
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}
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static void
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process(FILE *fp)
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{
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static int col = 0;
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static char nul[] = "\0";
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char *cp = nul + 1; /* so *(cp-1) starts out != '\n' */
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int c, rachar;
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char buff[5];
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c = getc(fp);
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while (c != EOF) {
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rachar = getc(fp);
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if (none) {
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cp = buff;
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*cp++ = c;
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if (c == '\\')
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*cp++ = '\\';
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*cp = '\0';
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} else if (markeol && c == '\n') {
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cp = buff;
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if ((eflags & VIS_NOSLASH) == 0)
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*cp++ = '\\';
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*cp++ = '$';
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*cp++ = '\n';
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*cp = '\0';
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} else if (extra)
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(void)svis(buff, (char)c, eflags, (char)rachar, extra);
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else
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(void)vis(buff, (char)c, eflags, (char)rachar);
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cp = buff;
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if (fold) {
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#ifdef DEBUG
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if (debug)
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(void)printf("<%02d,", col);
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#endif
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col = foldit(cp, col, foldwidth, eflags);
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#ifdef DEBUG
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if (debug)
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(void)printf("%02d>", col);
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#endif
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}
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do {
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(void)putchar(*cp);
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} while (*++cp);
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c = rachar;
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}
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/*
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* terminate partial line with a hidden newline
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*/
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if (fold && *(cp - 1) != '\n')
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(void)printf(eflags & VIS_MIMESTYLE ? "=\n" : "\\\n");
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}
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