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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char sccsid[] = "@(#)conv.c 8.1 (Berkeley) 6/6/93"; 36 #endif /* not lint */ 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <sys/types.h> 41 42 #include <assert.h> 43 #include <ctype.h> 44 #include <limits.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <wchar.h> 49 #include <wctype.h> 50 #include "hexdump.h" 51 52 void 53 conv_c(PR *pr, u_char *p, size_t bufsize) 54 { 55 char buf[10]; 56 char const *str; 57 wchar_t wc; 58 size_t clen, oclen; 59 int converr, pad, width; 60 char peekbuf[MB_LEN_MAX]; 61 62 if (pr->mbleft > 0) { 63 str = "**"; 64 pr->mbleft--; 65 goto strpr; 66 } 67 68 switch(*p) { 69 case '\0': 70 str = "\\0"; 71 goto strpr; 72 /* case '\a': */ 73 case '\007': 74 str = "\\a"; 75 goto strpr; 76 case '\b': 77 str = "\\b"; 78 goto strpr; 79 case '\f': 80 str = "\\f"; 81 goto strpr; 82 case '\n': 83 str = "\\n"; 84 goto strpr; 85 case '\r': 86 str = "\\r"; 87 goto strpr; 88 case '\t': 89 str = "\\t"; 90 goto strpr; 91 case '\v': 92 str = "\\v"; 93 goto strpr; 94 default: 95 break; 96 } 97 /* 98 * Multibyte characters are disabled for hexdump(1) for backwards 99 * compatibility and consistency (none of its other output formats 100 * recognize them correctly). 101 */ 102 converr = 0; 103 if (odmode && MB_CUR_MAX > 1) { 104 oclen = 0; 105 retry: 106 clen = mbrtowc(&wc, p, bufsize, &pr->mbstate); 107 if (clen == 0) 108 clen = 1; 109 else if (clen == (size_t)-1 || (clen == (size_t)-2 && 110 buf == peekbuf)) { 111 memset(&pr->mbstate, 0, sizeof(pr->mbstate)); 112 wc = *p; 113 clen = 1; 114 converr = 1; 115 } else if (clen == (size_t)-2) { 116 /* 117 * Incomplete character; peek ahead and see if we 118 * can complete it. 119 */ 120 oclen = bufsize; 121 bufsize = peek(p = peekbuf, MB_CUR_MAX); 122 goto retry; 123 } 124 clen += oclen; 125 } else { 126 wc = *p; 127 clen = 1; 128 } 129 if (!converr && iswprint(wc)) { 130 if (!odmode) { 131 *pr->cchar = 'c'; 132 (void)printf(pr->fmt, (int)wc); 133 } else { 134 *pr->cchar = 'C'; 135 assert(strcmp(pr->fmt, "%3C") == 0); 136 width = wcwidth(wc); 137 assert(width > 0); 138 pad = 3 - width; 139 if (pad < 0) 140 pad = 0; 141 (void)printf("%*s%C", pad, "", wc); 142 pr->mbleft = clen - 1; 143 } 144 } else { 145 (void)sprintf(buf, "%03o", (int)*p); 146 str = buf; 147 strpr: *pr->cchar = 's'; 148 (void)printf(pr->fmt, str); 149 } 150 } 151 152 void 153 conv_u(PR *pr, u_char *p) 154 { 155 static char const * list[] = { 156 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", 157 "bs", "ht", "lf", "vt", "ff", "cr", "so", "si", 158 "dle", "dcl", "dc2", "dc3", "dc4", "nak", "syn", "etb", 159 "can", "em", "sub", "esc", "fs", "gs", "rs", "us", 160 }; 161 162 /* od used nl, not lf */ 163 if (*p <= 0x1f) { 164 *pr->cchar = 's'; 165 if (odmode && *p == 0x0a) 166 (void)printf(pr->fmt, "nl"); 167 else 168 (void)printf(pr->fmt, list[*p]); 169 } else if (*p == 0x7f) { 170 *pr->cchar = 's'; 171 (void)printf(pr->fmt, "del"); 172 } else if (odmode && *p == 0x20) { /* od replaced space with sp */ 173 *pr->cchar = 's'; 174 (void)printf(pr->fmt, " sp"); 175 } else if (isprint(*p)) { 176 *pr->cchar = 'c'; 177 (void)printf(pr->fmt, *p); 178 } else { 179 *pr->cchar = 'x'; 180 (void)printf(pr->fmt, (int)*p); 181 } 182 } 183