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 <stdio.h> 44 #include <ctype.h> 45 #include <limits.h> 46 #include <stdlib.h> 47 #include <wchar.h> 48 #include <wctype.h> 49 #include "hexdump.h" 50 51 void 52 conv_c(PR *pr, u_char *p, size_t bufsize) 53 { 54 char buf[10]; 55 char const *str; 56 wchar_t wc; 57 size_t clen, oclen; 58 int converr, pad, width; 59 char peekbuf[MB_LEN_MAX]; 60 61 if (pr->mbleft > 0) { 62 str = "**"; 63 pr->mbleft--; 64 goto strpr; 65 } 66 67 switch(*p) { 68 case '\0': 69 str = "\\0"; 70 goto strpr; 71 /* case '\a': */ 72 case '\007': 73 str = "\\a"; 74 goto strpr; 75 case '\b': 76 str = "\\b"; 77 goto strpr; 78 case '\f': 79 str = "\\f"; 80 goto strpr; 81 case '\n': 82 str = "\\n"; 83 goto strpr; 84 case '\r': 85 str = "\\r"; 86 goto strpr; 87 case '\t': 88 str = "\\t"; 89 goto strpr; 90 case '\v': 91 str = "\\v"; 92 goto strpr; 93 default: 94 break; 95 } 96 /* 97 * Multibyte characters are disabled for hexdump(1) for backwards 98 * compatibility and consistency (none of its other output formats 99 * recognize them correctly). 100 */ 101 converr = 0; 102 if (odmode && MB_CUR_MAX > 1) { 103 oclen = 0; 104 retry: 105 clen = mbrtowc(&wc, p, bufsize, &pr->mbstate); 106 if (clen == 0) 107 clen = 1; 108 else if (clen == (size_t)-1 || (clen == (size_t)-2 && 109 buf == peekbuf)) { 110 memset(&pr->mbstate, 0, sizeof(pr->mbstate)); 111 wc = *p; 112 clen = 1; 113 converr = 1; 114 } else if (clen == (size_t)-2) { 115 /* 116 * Incomplete character; peek ahead and see if we 117 * can complete it. 118 */ 119 oclen = bufsize; 120 bufsize = peek(p = peekbuf, MB_CUR_MAX); 121 goto retry; 122 } 123 clen += oclen; 124 } else { 125 wc = *p; 126 clen = 1; 127 } 128 if (!converr && iswprint(wc)) { 129 if (!odmode) { 130 *pr->cchar = 'c'; 131 (void)printf(pr->fmt, (int)wc); 132 } else { 133 *pr->cchar = 'C'; 134 assert(strcmp(pr->fmt, "%3C") == 0); 135 width = wcwidth(wc); 136 assert(width > 0); 137 pad = 3 - width; 138 if (pad < 0) 139 pad = 0; 140 (void)printf("%*s%C", pad, "", wc); 141 pr->mbleft = clen - 1; 142 } 143 } else { 144 (void)sprintf(buf, "%03o", (int)*p); 145 str = buf; 146 strpr: *pr->cchar = 's'; 147 (void)printf(pr->fmt, str); 148 } 149 } 150 151 void 152 conv_u(PR *pr, u_char *p) 153 { 154 static char const * list[] = { 155 "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", 156 "bs", "ht", "lf", "vt", "ff", "cr", "so", "si", 157 "dle", "dcl", "dc2", "dc3", "dc4", "nak", "syn", "etb", 158 "can", "em", "sub", "esc", "fs", "gs", "rs", "us", 159 }; 160 161 /* od used nl, not lf */ 162 if (*p <= 0x1f) { 163 *pr->cchar = 's'; 164 if (odmode && *p == 0x0a) 165 (void)printf(pr->fmt, "nl"); 166 else 167 (void)printf(pr->fmt, list[*p]); 168 } else if (*p == 0x7f) { 169 *pr->cchar = 's'; 170 (void)printf(pr->fmt, "del"); 171 } else if (odmode && *p == 0x20) { /* od replaced space with sp */ 172 *pr->cchar = 's'; 173 (void)printf(pr->fmt, " sp"); 174 } else if (isprint(*p)) { 175 *pr->cchar = 'c'; 176 (void)printf(pr->fmt, *p); 177 } else { 178 *pr->cchar = 'x'; 179 (void)printf(pr->fmt, (int)*p); 180 } 181 } 182