168 lines
4.4 KiB
C
168 lines
4.4 KiB
C
/*
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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. 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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#include <sys/types.h>
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__FBSDID("$FreeBSD$");
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)util.c 8.3 (Berkeley) 4/2/94";
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#endif /* not lint */
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#endif
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "ls.h"
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#include "extern.h"
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int
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prn_printable(const char *s)
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{
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char c;
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int n;
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for (n = 0; (c = *s) != '\0'; ++s, ++n)
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if (isprint((unsigned char)c))
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putchar(c);
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else
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putchar('?');
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return n;
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}
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/*
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* The fts system makes it difficult to replace fts_name with a different-
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* sized string, so we just calculate the real length here and do the
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* conversion in prn_octal()
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*
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* XXX when using f_octal_escape (-b) rather than f_octal (-B), the
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* length computed by len_octal may be too big. I just can't be buggered
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* to fix this as an efficient fix would involve a lookup table. Same goes
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* for the rather inelegant code in prn_octal.
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*
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* DES 1998/04/23
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*/
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size_t
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len_octal(const char *s, int len)
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{
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size_t r = 0;
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while (len--)
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if (isprint((unsigned const char)*s++)) r++; else r += 4;
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return r;
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}
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int
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prn_octal(const char *s)
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{
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unsigned char ch;
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int len = 0;
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while ((ch = (unsigned char)*s++)) {
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if (isprint(ch) && (ch != '\"') && (ch != '\\'))
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putchar(ch), len++;
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else if (f_octal_escape) {
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putchar('\\');
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switch (ch) {
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case '\\':
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putchar('\\');
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break;
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case '\"':
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putchar('"');
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break;
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case '\a':
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putchar('a');
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break;
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case '\b':
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putchar('b');
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break;
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case '\f':
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putchar('f');
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break;
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case '\n':
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putchar('n');
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break;
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case '\r':
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putchar('r');
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break;
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case '\t':
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putchar('t');
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break;
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case '\v':
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putchar('v');
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break;
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default:
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putchar('0' + (ch >> 6));
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putchar('0' + ((ch >> 3) & 7));
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putchar('0' + (ch & 7));
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len += 2;
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break;
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}
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len += 2;
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}
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else {
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putchar('\\');
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putchar('0' + (ch >> 6));
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putchar('0' + ((ch >> 3) & 7));
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putchar('0' + (ch & 7));
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len += 4;
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}
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}
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return len;
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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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#ifdef COLORLS
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"usage: ls [-ABCFGHLPRTWZabcdfghiklnoqrstu1]"
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#else
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"usage: ls [-ABCFHLPRTWZabcdfghiklnoqrstu1]"
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#endif
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" [file ...]\n");
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exit(1);
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}
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