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1.18 ! maya 1: /* $NetBSD: morse.c,v 1.17 2012/06/19 05:46:08 dholland Exp $ */
1.3 cgd 2:
1.1 cgd 3: /*
1.3 cgd 4: * Copyright (c) 1988, 1993
5: * The Regents of the University of California. All rights reserved.
1.1 cgd 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.
1.11 agc 15: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 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:
1.4 lukem 32: #include <sys/cdefs.h>
1.1 cgd 33: #ifndef lint
1.15 lukem 34: __COPYRIGHT("@(#) Copyright (c) 1988, 1993\
35: The Regents of the University of California. All rights reserved.");
1.1 cgd 36: #endif /* not lint */
37:
38: #ifndef lint
1.3 cgd 39: #if 0
40: static char sccsid[] = "@(#)morse.c 8.1 (Berkeley) 5/31/93";
41: #else
1.18 ! maya 42: __RCSID("$NetBSD: morse.c,v 1.17 2012/06/19 05:46:08 dholland Exp $");
1.3 cgd 43: #endif
1.1 cgd 44: #endif /* not lint */
45:
1.4 lukem 46: #include <ctype.h>
1.1 cgd 47: #include <stdio.h>
1.10 matt 48: #include <stdlib.h>
1.6 hubertf 49: #include <string.h>
1.4 lukem 50: #include <unistd.h>
1.1 cgd 51:
1.7 jsm 52: static const char
53: *const digit[] = {
1.1 cgd 54: "-----",
55: ".----",
56: "..---",
57: "...--",
58: "....-",
59: ".....",
60: "-....",
61: "--...",
62: "---..",
63: "----.",
64: },
1.7 jsm 65: *const alph[] = {
1.1 cgd 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:
1.16 dholland 94: static const struct punc {
1.13 jsm 95: char c;
96: const char *morse;
97: } other[] = {
98: { '.', ".-.-.-" },
99: { ',', "--..--" },
100: { ':', "---..." },
101: { '?', "..--.." },
102: { '\'', ".----." },
103: { '-', "-....-" },
104: { '/', "-..-." },
105: { '(', "-.--." },
106: { ')', "-.--.-" },
107: { '"', ".-..-." },
108: { '=', "-...-" },
109: { '+', ".-.-." },
1.18 ! maya 110: { '_', "..--.-" },
1.13 jsm 111: { '\0', NULL }
112: };
113:
1.12 jsm 114: int main(int, char *[]);
1.16 dholland 115: static void morse(int);
116: static void decode(const char *);
117: static void show(const char *);
1.4 lukem 118:
1.1 cgd 119: static int sflag;
1.6 hubertf 120: static int dflag;
1.1 cgd 121:
1.4 lukem 122: int
1.17 dholland 123: main(int argc, char **argv)
1.1 cgd 124: {
1.4 lukem 125: int ch;
1.13 jsm 126: char *p;
1.8 jsm 127:
128: /* Revoke setgid privileges */
1.9 mycroft 129: setgid(getgid());
1.1 cgd 130:
1.6 hubertf 131: while ((ch = getopt(argc, argv, "ds")) != -1)
1.1 cgd 132: switch((char)ch) {
1.6 hubertf 133: case 'd':
134: dflag = 1;
135: break;
1.1 cgd 136: case 's':
137: sflag = 1;
138: break;
139: case '?':
140: default:
1.6 hubertf 141: fprintf(stderr, "usage: morse [-ds] [string ...]\n");
1.1 cgd 142: exit(1);
143: }
144: argc -= optind;
145: argv += optind;
146:
1.6 hubertf 147: if (dflag) {
148: if (*argv) {
149: do {
150: decode(*argv);
151: } while (*++argv);
1.13 jsm 152: } else {
153: char foo[10]; /* All morse chars shorter than this */
1.14 dholland 154: int is_blank, i;
1.13 jsm 155:
156: i = 0;
1.14 dholland 157: is_blank = 0;
1.13 jsm 158: while ((ch = getchar()) != EOF) {
159: if (ch == '-' || ch == '.') {
160: foo[i++] = ch;
161: if (i == 10) {
162: /* overrun means gibberish--print 'x' and
163: * advance */
164: i = 0;
165: putchar('x');
166: while ((ch = getchar()) != EOF &&
167: (ch == '.' || ch == '-'))
168: ;
1.14 dholland 169: is_blank = 1;
1.6 hubertf 170: }
1.13 jsm 171: } else if (i) {
172: foo[i] = '\0';
173: decode(foo);
174: i = 0;
1.14 dholland 175: is_blank = 0;
1.13 jsm 176: } else if (isspace(ch)) {
1.14 dholland 177: if (is_blank) {
1.13 jsm 178: /* print whitespace for each double blank */
179: putchar(' ');
1.14 dholland 180: is_blank = 0;
1.13 jsm 181: } else
1.14 dholland 182: is_blank = 1;
1.6 hubertf 183: }
184: }
185: }
186: putchar('\n');
1.13 jsm 187: } else {
1.6 hubertf 188: if (*argv)
189: do {
190: for (p = *argv; *p; ++p)
191: morse((int)*p);
1.13 jsm 192: show("");
1.6 hubertf 193: } while (*++argv);
194: else while ((ch = getchar()) != EOF)
195: morse(ch);
1.13 jsm 196: show("...-.-"); /* SK */
1.6 hubertf 197: }
198:
199: return 0;
200: }
201:
202: void
1.17 dholland 203: decode(const char *s)
1.6 hubertf 204: {
1.13 jsm 205: int i;
206:
207: for (i = 0; i < 10; i++)
208: if (strcmp(digit[i], s) == 0) {
209: putchar('0' + i);
210: return;
1.6 hubertf 211: }
1.13 jsm 212:
213: for (i = 0; i < 26; i++)
214: if (strcmp(alph[i], s) == 0) {
215: putchar('A' + i);
1.6 hubertf 216: return;
217: }
1.13 jsm 218: i = 0;
219: while (other[i].c) {
220: if (strcmp(other[i].morse, s) == 0) {
221: putchar(other[i].c);
222: return;
1.6 hubertf 223: }
1.13 jsm 224: i++;
1.6 hubertf 225: }
1.13 jsm 226: if (strcmp("...-.-", s) == 0)
227: return;
228: putchar('x'); /* line noise */
1.1 cgd 229: }
230:
1.4 lukem 231: void
1.17 dholland 232: morse(int c)
1.1 cgd 233: {
1.13 jsm 234: int i;
235:
1.1 cgd 236: if (isalpha(c))
237: show(alph[c - (isupper(c) ? 'A' : 'a')]);
238: else if (isdigit(c))
239: show(digit[c - '0']);
240: else if (isspace(c))
1.13 jsm 241: show(""); /* could show BT for a pause */
242: else {
243: i = 0;
244: while (other[i].c) {
245: if (other[i].c == c) {
246: show(other[i].morse);
247: break;
248: }
249: i++;
250: }
251: }
1.1 cgd 252: }
253:
1.4 lukem 254: void
1.17 dholland 255: show(const char *s)
1.1 cgd 256: {
257: if (sflag)
258: printf(" %s", s);
259: else for (; *s; ++s)
260: printf(" %s", *s == '.' ? "dit" : "daw");
1.13 jsm 261: printf("\n");
1.1 cgd 262: }