GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/vis/vis.c Lines: 0 74 0.0 %
Date: 2017-11-13 Branches: 0 56 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: vis.c,v 1.20 2016/08/31 09:45:00 jsg Exp $	*/
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/*	$NetBSD: vis.c,v 1.4 1994/12/20 16:13:03 jtc 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 <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 <limits.h>
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#include <err.h>
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#include <vis.h>
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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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int foldit(char *, int, int);
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void process(FILE *);
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__dead void usage(void);
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int
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main(int argc, char *argv[])
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{
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	const char *errstr;
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	FILE *fp;
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	int ch;
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	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	while ((ch = getopt(argc, argv, "anwctsobfF:ld")) != -1)
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		switch(ch) {
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		case 'a':
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			eflags |= VIS_ALL;
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			break;
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		case 'n':
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			none = 1;
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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 'c':
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			eflags |= VIS_CSTYLE;
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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 's':
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			eflags |= VIS_SAFE;
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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 'b':
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			eflags |= VIS_NOSLASH;
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			break;
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		case 'F':
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			foldwidth = strtonum(optarg, 1, INT_MAX, &errstr);
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			if (errstr)
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				errx(1, "%s: %s", optarg, errstr);
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			if (foldwidth < 5)
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				errx(1, "can't fold lines to less than 5 cols");
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			/*FALLTHROUGH*/
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		case 'f':
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			fold = 1;	/* fold output lines to 80 cols */
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			break;		/* using hidden newline */
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		case 'l':
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			markeol = 1;	/* mark end of line with \$ */
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			break;
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#ifdef DEBUG
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		case 'd':
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			debug = 1;
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			break;
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#endif
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		case '?':
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		default:
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			usage();
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		}
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	argc -= optind;
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	argv += optind;
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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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				fclose(fp);
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			} else
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				warn("%s", *argv);
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			argv++;
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		}
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	else {
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		if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
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			err(1, "pledge");
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		process(stdin);
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	}
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	exit(0);
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}
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void
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process(FILE *fp)
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{
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	static int col = 0;
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	char *cp = "\0"+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
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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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				printf("<%02d,", col);
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#endif
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			col = foldit(cp, col, foldwidth);
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#ifdef DEBUG
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			if (debug)
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				printf("%02d>", col);
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#endif
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		}
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		do {
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			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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		printf("\\\n");
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}
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__dead void
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usage(void)
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{
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	extern char *__progname;
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	fprintf(stderr, "usage: %s [-abcflnostw] [-F foldwidth] [file ...]\n",
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	    __progname);
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	exit(1);
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}