text: /*-
   * Copyright (c) 1989, 1993, 1994
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Michael Fischbein.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #if 0
  #ifndef lint
  static char sccsid[] = "@(#)util.c	8.3 (Berkeley) 4/2/94";
  #endif /* not lint */
  #endif
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD$");
  
  #include <sys/types.h>
  #include <sys/stat.h>
  
  #include <ctype.h>
  #include <err.h>
  #include <fts.h>
  #include <limits.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <wchar.h>
  #include <wctype.h>
  #include <libxo/xo.h>
  
  #include "ls.h"
  #include "extern.h"
  
  int
  prn_normal(const char *field, const char *s)
  {
  	char fmt[_POSIX2_LINE_MAX];
  
  	snprintf(fmt, sizeof(fmt), "{:%s/%%hs}", field);
  	return xo_emit(fmt, s);
  #if 0
  	mbstate_t mbs;
  	wchar_t wc;
  	int i, n;
  	size_t clen;
  
  	memset(&mbs, 0, sizeof(mbs));
  	n = 0;
  	while ((clen = mbrtowc(&wc, s, MB_LEN_MAX, &mbs)) != 0) {
  		if (clen == (size_t)-2) {
  			n += printf("%s", s);
  			break;
  		}
  		if (clen == (size_t)-1) {
  			memset(&mbs, 0, sizeof(mbs));
  			putchar((unsigned char)*s);
  			s++;
  			n++;
  			continue;
  		}
  		for (i = 0; i < (int)clen; i++)
  			putchar((unsigned char)s[i]);
  		s += clen;
  		if (iswprint(wc))
  			n += wcwidth(wc);
  	}
  	return (n);
  #endif
  }
  
  char *
  get_printable(const char *s)
  {
  	mbstate_t mbs;
  	wchar_t wc;
  	int i, n;
  	size_t clen;
  	int slen = strlen(s);
  	char *buf = alloca(slen + 1), *bp = buf;
  
  	memset(&mbs, 0, sizeof(mbs));
  	n = 0;
  	while ((clen = mbrtowc(&wc, s, MB_LEN_MAX, &mbs)) != 0) {
  		if (clen == (size_t)-1) {
  			*bp++ = '?';
  			s++;
  			n++;
  			memset(&mbs, 0, sizeof(mbs));
  			continue;
  		}
  		if (clen == (size_t)-2) {
  			*bp++ = '?';
  			n++;
  			break;
  		}
  		if (!iswprint(wc)) {
  			*bp++ = '?';
  			s += clen;
  			n++;
  			continue;
  		}
  		for (i = 0; i < (int)clen; i++)
  			*bp++ = (unsigned char)s[i];
  		s += clen;
  		n += wcwidth(wc);
  	}
  	*bp = '\0';
  	return strdup(buf);
  }
  
  /*
   * The fts system makes it difficult to replace fts_name with a different-
   * sized string, so we just calculate the real length here and do the
   * conversion in prn_octal()
   *
   * XXX when using f_octal_escape (-b) rather than f_octal (-B), the
   * length computed by len_octal may be too big. I just can't be buggered
   * to fix this as an efficient fix would involve a lookup table. Same goes
   * for the rather inelegant code in prn_octal.
   *
   *						DES 1998/04/23
   */
  
  size_t
  len_octal(const char *s, int len)
  {
  	mbstate_t mbs;
  	wchar_t wc;
  	size_t clen, r;
  
  	memset(&mbs, 0, sizeof(mbs));
  	r = 0;
  	while (len != 0 && (clen = mbrtowc(&wc, s, len, &mbs)) != 0) {
  		if (clen == (size_t)-1) {
  			r += 4;
  			s++;
  			len--;
  			memset(&mbs, 0, sizeof(mbs));
  			continue;
  		}
  		if (clen == (size_t)-2) {
  			r += 4 * len;
  			break;
  		}
  		if (iswprint(wc))
  			r++;
  		else
  			r += 4 * clen;
  		s += clen;
  	}
  	return (r);
  }
  
  char *
  get_octal(const char *s)
  {
  	static const char esc[] = "\\\\\"\"\aa\bb\ff\nn\rr\tt\vv";
  	const char *p;
  	mbstate_t mbs;
  	wchar_t wc;
  	size_t clen;
  	unsigned char ch;
  	int goodchar, i, len, prtlen;
  	int slen = strlen(s);
  	char *buf = alloca(slen * 4 + 1), *bp = buf;
  
  	memset(&mbs, 0, sizeof(mbs));
  	len = 0;
  	while ((clen = mbrtowc(&wc, s, MB_LEN_MAX, &mbs)) != 0) {
  		goodchar = clen != (size_t)-1 && clen != (size_t)-2;
  		if (goodchar && iswprint(wc) && wc != L'\"' && wc != L'\\') {
  			for (i = 0; i < (int)clen; i++)
  				*bp++ = (unsigned char)s[i];
  			len += wcwidth(wc);
  		} else if (goodchar && f_octal_escape &&
  #if WCHAR_MIN < 0
                      wc >= 0 &&
  #endif
  		    wc <= (wchar_t)UCHAR_MAX &&
  		    (p = strchr(esc, (char)wc)) != NULL) {
  			*bp ++ = '\\';
  			*bp++ = p[1];
  			len += 2;
  		} else {
  			if (goodchar)
  				prtlen = clen;
  			else if (clen == (size_t)-1)
  				prtlen = 1;
  			else
  				prtlen = strlen(s);
  			for (i = 0; i < prtlen; i++) {
  				ch = (unsigned char)s[i];
  				*bp++ = '\\';
  				*bp++ = '0' + (ch >> 6);
  				*bp++ = '0' + ((ch >> 3) & 7);
  				*bp++ = '0' + (ch & 7);
  				len += 4;
  			}
  		}
  		if (clen == (size_t)-2)
  			break;
  		if (clen == (size_t)-1) {
  			memset(&mbs, 0, sizeof(mbs));
  			s++;
  		} else
  			s += clen;
  	}
  
  	*bp = '\0';
  	return strdup(buf);
  }
  
  void
  usage(void)
  {
  	xo_error(
  #ifdef COLORLS
  	"usage: ls [-ABCFGHILPRSTUWZabcdfghiklmnopqrstuwxy1,] [-D format]"
  #else
  	"usage: ls [-ABCFHILPRSTUWZabcdfghiklmnopqrstuwxy1,] [-D format]"
  #endif
  		      " [file ...]\n");
  	exit(1);
  }
  