21ab633500
suggested by uwe@, inspired by FreeBSD. The three flags override
each other (and the '-q' flag) and behave as follows:
-B Force printing of non-printable characters in file names as
\xxx, where xxx is the numeric value of the character in octal.
-b As -B, but use C escape codes whenever possible.
-w Force raw printing of non-printable characters. This is the
default when output is not to a terminal.
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/* $NetBSD: util.c,v 1.27 2003/09/22 02:43:20 jschauma Exp $ */
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/*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Michael Fischbein.
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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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#if 0
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static char sccsid[] = "@(#)util.c 8.5 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: util.c,v 1.27 2003/09/22 02:43:20 jschauma Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.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 <fts.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <vis.h>
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#include "ls.h"
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#include "extern.h"
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int
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safe_print(const char *src)
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{
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size_t len;
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char *name;
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int flags;
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flags = VIS_NL | VIS_OCTAL;
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if (f_octal_escape)
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flags |= VIS_CSTYLE;
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len = strlen(src);
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if (len != 0 && SIZE_T_MAX/len <= 4) {
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errx(EXIT_FAILURE, "%s: name too long", src);
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/* NOTREACHED */
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}
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name = (char *)malloc(4*len+1);
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if (name != NULL) {
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len = strvis(name, src, flags);
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printf("%s", name);
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free(name);
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return len;
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} else
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errx(EXIT_FAILURE, "out of memory!");
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/* NOTREACHED */
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}
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int
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printescaped(const char *src)
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{
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unsigned char c;
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int n;
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for (n = 0; (c = *src) != '\0'; ++src, ++n)
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if (isprint(c))
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(void)putchar(c);
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else
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(void)putchar('?');
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return n;
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}
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void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: ls [-AaBbCcdFfgikLlmnopqRrSsTtuWwx1] [file ...]\n");
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exit(EXIT_FAILURE);
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/* NOTREACHED */
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}
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