1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char sccsid[] = "@(#)conv.c 8.1 (Berkeley) 6/6/93"; 32 #endif /* not lint */ 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/types.h> 37 38 #include <assert.h> 39 #include <ctype.h> 40 #include <limits.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <wchar.h> 45 #include <wctype.h> 46 #include "hexdump.h" 47 48 void 49 conv_c(PR *pr, u_char *p, size_t bufsize) 50 { 51 char buf[10]; 52 char const *str; 53 wchar_t wc; 54 size_t clen, oclen; 55 int converr, pad, width; 56 u_char peekbuf[MB_LEN_MAX]; 57 58 if (pr->mbleft > 0) { 59 str = "**"; 60 pr->mbleft--; 61 goto strpr; 62 } 63 64 switch(*p) { 65 case '\0': 66 str = "\\0"; 67 goto strpr; 68 /* case '\a': */ 69 case '\007': 70 str = "\\a"; 71 goto strpr; 72 case '\b': 73 str = "\\b"; 74 goto strpr; 75 case '\f': 76 str = "\\f"; 77 goto strpr; 78 case '\n': 79 str = "\\n"; 80 goto strpr; 81 case '\r': 82 str = "\\r"; 83 goto strpr; 84 case '\t': 85 str = "\\t"; 86 goto strpr; 87 case '\v': 88 str = "\\v"; 89 goto strpr; 90 default: 91 break; 92 } 93 /* 94 * Multibyte characters are disabled for hexdump(1) for backwards 95 * compatibility and consistency (none of its other output formats 96 * recognize them correctly). 97 */ 98 converr = 0; 99 if (odmode && MB_CUR_MAX > 1) { 100 oclen = 0; 101 retry: 102 clen = mbrtowc(&wc, p, bufsize, &pr->mbstate); 103 if (clen == 0) 104 clen = 1; 105 else if (clen == (size_t)-1 || (clen == (size_t)-2 && 106 p == peekbuf)) { 107 memset(&pr->mbstate, 0, sizeof(pr->mbstate)); 108 wc = *p; 109 clen = 1; 110 converr = 1; 111 } else if (clen == (size_t)-2) { 112 /* 113 * Incomplete character; peek ahead and see if we 114 * can complete it. 115 */ 116 oclen = bufsize; 117 bufsize = peek(p = peekbuf, MB_CUR_MAX); 118 goto retry; 119 } 120 clen += oclen; 121 } else { 122 wc = *p; 123 clen = 1; 124 } 125 if (!converr && iswprint(wc)) { 126 if (!odmode) { 127 *pr->cchar = 'c'; 128 (void)printf(pr->fmt, (int)wc); 129 } else { 130 *pr->cchar = 'C'; 131 assert(strcmp(pr->fmt, "%3C") == 0); 132 width = wcwidth(wc); 133 assert(width >= 0); 134 pad = 3 - width; 135 if (pad < 0) 136 pad = 0; 137 (void)printf("%*s%C", pad, "", wc); 138 pr->mbleft = clen - 1; 139 } 140 } else { 141 (void)sprintf(buf, "%03o", (int)*p); 142 str = buf; 143 strpr: *pr->cchar = 's'; 144 (void)printf(pr->fmt, str); 145 } 146 } 147 148 void 149 conv_u(PR *pr, u_char *p) 150 { 151 static char const * list[] = { 152 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", 153 "bs", "ht", "lf", "vt", "ff", "cr", "so", "si", 154 "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb", 155 "can", "em", "sub", "esc", "fs", "gs", "rs", "us", 156 }; 157 158 /* od used nl, not lf */ 159 if (*p <= 0x1f) { 160 *pr->cchar = 's'; 161 if (odmode && *p == 0x0a) 162 (void)printf(pr->fmt, "nl"); 163 else 164 (void)printf(pr->fmt, list[*p]); 165 } else if (*p == 0x7f) { 166 *pr->cchar = 's'; 167 (void)printf(pr->fmt, "del"); 168 } else if (odmode && *p == 0x20) { /* od replaced space with sp */ 169 *pr->cchar = 's'; 170 (void)printf(pr->fmt, " sp"); 171 } else if (isprint(*p)) { 172 *pr->cchar = 'c'; 173 (void)printf(pr->fmt, *p); 174 } else { 175 *pr->cchar = 'x'; 176 (void)printf(pr->fmt, (int)*p); 177 } 178 } 179