1 /* $OpenBSD: morse.c,v 1.13 2005/11/07 19:09:33 jmc Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static char copyright[] = 34 "@(#) Copyright (c) 1988, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)morse.c 8.1 (Berkeley) 5/31/93"; 41 #else 42 static char rcsid[] = "$OpenBSD: morse.c,v 1.13 2005/11/07 19:09:33 jmc Exp $"; 43 #endif 44 #endif /* not lint */ 45 46 #include <ctype.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 static char 53 *digit[] = { 54 "-----", 55 ".----", 56 "..---", 57 "...--", 58 "....-", 59 ".....", 60 "-....", 61 "--...", 62 "---..", 63 "----.", 64 }, 65 *alph[] = { 66 ".-", 67 "-...", 68 "-.-.", 69 "-..", 70 ".", 71 "..-.", 72 "--.", 73 "....", 74 "..", 75 ".---", 76 "-.-", 77 ".-..", 78 "--", 79 "-.", 80 "---", 81 ".--.", 82 "--.-", 83 ".-.", 84 "...", 85 "-", 86 "..-", 87 "...-", 88 ".--", 89 "-..-", 90 "-.--", 91 "--..", 92 }; 93 94 struct punc { 95 char c; 96 char *morse; 97 } other[] = { 98 { ',', "--..--" }, 99 { '.', ".-.-.-" }, 100 { '?', "..--.." }, 101 { '/', "-..-." }, 102 { '-', "-....-" }, 103 { ':', "---..." }, 104 { ';', "-.-.-." }, 105 { '(', "-.--.-." }, /* When converting from Morse, can't tell */ 106 { ')', "-.--.-." }, /* '(' and ')' apart */ 107 { '"', ".-..-." }, 108 { '`', ".-..-." }, 109 { '\'', ".----." }, 110 { '+', ".-.-." }, /* AR */ 111 { '=', "-...-" }, /* BT */ 112 { '@', "...-.-" }, /* SK */ 113 { '\0', NULL } 114 }; 115 116 void morse(int); 117 void decode(char *); 118 void show(char *); 119 120 static int sflag = 0; 121 static int dflag = 0; 122 123 int 124 main(int argc, char *argv[]) 125 { 126 int ch; 127 char *p; 128 129 while ((ch = getopt(argc, argv, "dsh")) != -1) 130 switch((char)ch) { 131 case 'd': 132 dflag = 1; 133 break; 134 case 's': 135 sflag = 1; 136 break; 137 case '?': case 'h': 138 default: 139 fprintf(stderr, "usage: morse [-d | -s] [string ...]\n"); 140 exit(1); 141 } 142 argc -= optind; 143 argv += optind; 144 145 if (dflag) { 146 if (*argv) { 147 do { 148 decode(*argv); 149 } while (*++argv); 150 } else { 151 char foo[10]; /* All morse chars shorter than this */ 152 int isblank, i; 153 154 i = 0; 155 isblank = 0; 156 while ((ch = getchar()) != EOF) { 157 if (ch == '-' || ch == '.') { 158 foo[i++] = ch; 159 if (i == 10) { 160 /* overrun means gibberish--print 'x' and 161 * advance */ 162 i = 0; 163 putchar('x'); 164 while ((ch = getchar()) != EOF && 165 (ch == '.' || ch == '-')) 166 ; 167 isblank = 1; 168 } 169 } else if (i) { 170 foo[i] = '\0'; 171 decode(foo); 172 i = 0; 173 isblank = 0; 174 } else if (isspace(ch)) { 175 if (isblank) { 176 /* print whitespace for each double blank */ 177 putchar(' '); 178 isblank = 0; 179 } else 180 isblank = 1; 181 } 182 } 183 } 184 putchar('\n'); 185 } else { 186 if (*argv) 187 do { 188 for (p = *argv; *p; ++p) 189 morse((int)*p); 190 show(""); 191 } while (*++argv); 192 else while ((ch = getchar()) != EOF) 193 morse(ch); 194 show("...-.-"); /* SK */ 195 } 196 exit(0); 197 } 198 199 void 200 morse(int c) 201 { 202 int i; 203 204 if (isalpha(c)) 205 show(alph[c - (isupper(c) ? 'A' : 'a')]); 206 else if (isdigit(c)) 207 show(digit[c - '0']); 208 else if (isspace(c)) 209 show(""); /* could show BT for a pause */ 210 else { 211 i = 0; 212 while (other[i].c) { 213 if (other[i].c == c) { 214 show(other[i].morse); 215 break; 216 } 217 i++; 218 } 219 } 220 } 221 222 void 223 decode(char *s) 224 { 225 int i; 226 227 for (i = 0; i < 10; i++) 228 if (strcmp(digit[i], s) == 0) { 229 putchar('0' + i); 230 return; 231 } 232 233 for (i = 0; i < 26; i++) 234 if (strcmp(alph[i], s) == 0) { 235 putchar('A' + i); 236 return; 237 } 238 i = 0; 239 while (other[i].c) { 240 if (strcmp(other[i].morse, s) == 0) { 241 putchar(other[i].c); 242 return; 243 } 244 i++; 245 } 246 putchar('x'); /* line noise */ 247 } 248 249 250 251 void 252 show(char *s) 253 { 254 if (sflag) 255 printf(" %s", s); 256 else for (; *s; ++s) 257 printf(" %s", *s == '.' ? "dit" : "daw"); 258 printf("\n"); 259 } 260