1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Michael Fischbein. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #if 0 36 #ifndef lint 37 static char sccsid[] = "@(#)util.c 8.3 (Berkeley) 4/2/94"; 38 #endif /* not lint */ 39 #endif 40 #include <sys/cdefs.h> 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 44 #include <ctype.h> 45 #include <err.h> 46 #include <fts.h> 47 #include <limits.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <wchar.h> 52 #include <wctype.h> 53 54 #include "ls.h" 55 #include "extern.h" 56 57 int 58 prn_normal(const char *s) 59 { 60 mbstate_t mbs; 61 wchar_t wc; 62 int i, n; 63 size_t clen; 64 65 memset(&mbs, 0, sizeof(mbs)); 66 n = 0; 67 while ((clen = mbrtowc(&wc, s, MB_LEN_MAX, &mbs)) != 0) { 68 if (clen == (size_t)-2) { 69 n += printf("%s", s); 70 break; 71 } 72 if (clen == (size_t)-1) { 73 memset(&mbs, 0, sizeof(mbs)); 74 putchar((unsigned char)*s); 75 s++; 76 n++; 77 continue; 78 } 79 for (i = 0; i < (int)clen; i++) 80 putchar((unsigned char)s[i]); 81 s += clen; 82 if (iswprint(wc)) 83 n += wcwidth(wc); 84 } 85 return (n); 86 } 87 88 int 89 prn_printable(const char *s) 90 { 91 mbstate_t mbs; 92 wchar_t wc; 93 int i, n; 94 size_t clen; 95 96 memset(&mbs, 0, sizeof(mbs)); 97 n = 0; 98 while ((clen = mbrtowc(&wc, s, MB_LEN_MAX, &mbs)) != 0) { 99 if (clen == (size_t)-1) { 100 putchar('?'); 101 s++; 102 n++; 103 memset(&mbs, 0, sizeof(mbs)); 104 continue; 105 } 106 if (clen == (size_t)-2) { 107 putchar('?'); 108 n++; 109 break; 110 } 111 if (!iswprint(wc)) { 112 putchar('?'); 113 s += clen; 114 n++; 115 continue; 116 } 117 for (i = 0; i < (int)clen; i++) 118 putchar((unsigned char)s[i]); 119 s += clen; 120 n += wcwidth(wc); 121 } 122 return (n); 123 } 124 125 /* 126 * The fts system makes it difficult to replace fts_name with a different- 127 * sized string, so we just calculate the real length here and do the 128 * conversion in prn_octal() 129 * 130 * XXX when using f_octal_escape (-b) rather than f_octal (-B), the 131 * length computed by len_octal may be too big. I just can't be buggered 132 * to fix this as an efficient fix would involve a lookup table. Same goes 133 * for the rather inelegant code in prn_octal. 134 * 135 * DES 1998/04/23 136 */ 137 138 size_t 139 len_octal(const char *s, int len) 140 { 141 mbstate_t mbs; 142 wchar_t wc; 143 size_t clen, r; 144 145 memset(&mbs, 0, sizeof(mbs)); 146 r = 0; 147 while (len != 0 && (clen = mbrtowc(&wc, s, len, &mbs)) != 0) { 148 if (clen == (size_t)-1) { 149 r += 4; 150 s++; 151 len--; 152 memset(&mbs, 0, sizeof(mbs)); 153 continue; 154 } 155 if (clen == (size_t)-2) { 156 r += 4 * len; 157 break; 158 } 159 if (iswprint(wc)) 160 r++; 161 else 162 r += 4 * clen; 163 s += clen; 164 } 165 return (r); 166 } 167 168 int 169 prn_octal(const char *s) 170 { 171 static const char esc[] = "\\\\\"\"\aa\bb\ff\nn\rr\tt\vv"; 172 const char *p; 173 mbstate_t mbs; 174 wchar_t wc; 175 size_t clen; 176 unsigned char ch; 177 int goodchar, i, len, prtlen; 178 179 memset(&mbs, 0, sizeof(mbs)); 180 len = 0; 181 while ((clen = mbrtowc(&wc, s, MB_LEN_MAX, &mbs)) != 0) { 182 goodchar = clen != (size_t)-1 && clen != (size_t)-2; 183 if (goodchar && iswprint(wc) && wc != L'\"' && wc != L'\\') { 184 for (i = 0; i < (int)clen; i++) 185 putchar((unsigned char)s[i]); 186 len += wcwidth(wc); 187 } else if (goodchar && f_octal_escape && 188 #if WCHAR_MIN < 0 189 wc >= 0 && 190 #endif 191 wc <= (wchar_t)UCHAR_MAX && 192 (p = strchr(esc, (char)wc)) != NULL) { 193 putchar('\\'); 194 putchar(p[1]); 195 len += 2; 196 } else { 197 if (goodchar) 198 prtlen = clen; 199 else if (clen == (size_t)-1) 200 prtlen = 1; 201 else 202 prtlen = strlen(s); 203 for (i = 0; i < prtlen; i++) { 204 ch = (unsigned char)s[i]; 205 putchar('\\'); 206 putchar('0' + (ch >> 6)); 207 putchar('0' + ((ch >> 3) & 7)); 208 putchar('0' + (ch & 7)); 209 len += 4; 210 } 211 } 212 if (clen == (size_t)-2) 213 break; 214 if (clen == (size_t)-1) { 215 memset(&mbs, 0, sizeof(mbs)); 216 s++; 217 } else 218 s += clen; 219 } 220 return (len); 221 } 222 223 void 224 usage(void) 225 { 226 (void)fprintf(stderr, 227 #ifdef COLORLS 228 "usage: ls [-ABCFGHILPRSTUWZabcdfghiklmnopqrstuvwxy1,] [--color=when] [-D format]" 229 #else 230 "usage: ls [-ABCFHILPRSTUWZabcdfghiklmnopqrstuvwxy1,] [-D format]" 231 #endif 232 " [file ...]\n"); 233 exit(1); 234 } 235