1 /* 2 * Copyright (c) 1988, 1993, 1994 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 * @(#) Copyright (c) 1988, 1993, 1994 The Regents of the University of California. All rights reserved. 34 * @(#)number.c 8.3 (Berkeley) 5/4/95 35 * $FreeBSD: src/games/number/number.c,v 1.12 1999/12/12 03:22:35 billf Exp $ 36 * $DragonFly: src/games/number/number.c,v 1.3 2003/11/12 14:53:53 eirikn Exp $ 37 */ 38 39 #include <sys/types.h> 40 41 #include <ctype.h> 42 #include <err.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 #define MAXNUM 65 /* Biggest number we handle. */ 49 50 static const char *name1[] = { 51 "", "one", "two", "three", 52 "four", "five", "six", "seven", 53 "eight", "nine", "ten", "eleven", 54 "twelve", "thirteen", "fourteen", "fifteen", 55 "sixteen", "seventeen", "eighteen", "nineteen", 56 }, 57 *name2[] = { 58 "", "ten", "twenty", "thirty", 59 "forty", "fifty", "sixty", "seventy", 60 "eighty", "ninety", 61 }, 62 *name3[] = { 63 "hundred", "thousand", "million", "billion", 64 "trillion", "quadrillion", "quintillion", "sextillion", 65 "septillion", "octillion", "nonillion", "decillion", 66 "undecillion", "duodecillion", "tredecillion", "quattuordecillion", 67 "quindecillion", "sexdecillion", 68 "septendecillion", "octodecillion", 69 "novemdecillion", "vigintillion", 70 }; 71 72 void convert (char *); 73 int number (char *, int); 74 void pfract (int); 75 void toobig (void); 76 int unit (int, char *); 77 void usage (void); 78 79 int lflag; 80 81 int 82 main(argc, argv) 83 int argc; 84 char *argv[]; 85 { 86 int ch, first; 87 char line[256]; 88 89 lflag = 0; 90 while ((ch = getopt(argc, argv, "l")) != -1) 91 switch (ch) { 92 case 'l': 93 lflag = 1; 94 break; 95 case '?': 96 default: 97 usage(); 98 } 99 argc -= optind; 100 argv += optind; 101 102 if (*argv == NULL) 103 for (first = 1; 104 fgets(line, sizeof(line), stdin) != NULL; first = 0) { 105 if (strchr(line, '\n') == NULL) 106 errx(1, "line too long."); 107 if (!first) 108 (void)printf("...\n"); 109 convert(line); 110 } 111 else 112 for (first = 1; *argv != NULL; first = 0, ++argv) { 113 if (!first) 114 (void)printf("...\n"); 115 convert(*argv); 116 } 117 exit(0); 118 } 119 120 void 121 convert(line) 122 char *line; 123 { 124 int flen, len, rval; 125 char *p, *fraction; 126 127 flen = NULL; 128 fraction = NULL; 129 for (p = line; *p != '\0' && *p != '\n'; ++p) { 130 if (isblank(*p)) { 131 if (p == line) { 132 ++line; 133 continue; 134 } 135 goto badnum; 136 } 137 if (isdigit(*p)) 138 continue; 139 switch (*p) { 140 case '.': 141 if (fraction != NULL) 142 goto badnum; 143 fraction = p + 1; 144 *p = '\0'; 145 break; 146 case '-': 147 if (p == line) 148 break; 149 /* FALLTHROUGH */ 150 default: 151 badnum: errx(1, "illegal number: %s", line); 152 break; 153 } 154 } 155 *p = '\0'; 156 157 if ((len = strlen(line)) > MAXNUM || 158 (fraction != NULL && ((flen = strlen(fraction)) > MAXNUM))) 159 errx(1, "number too large, max %d digits.", MAXNUM); 160 161 if (*line == '-') { 162 (void)printf("minus%s", lflag ? " " : "\n"); 163 ++line; 164 --len; 165 } 166 167 rval = len > 0 ? unit(len, line) : 0; 168 if (fraction != NULL && flen != 0) 169 for (p = fraction; *p != '\0'; ++p) 170 if (*p != '0') { 171 if (rval) 172 (void)printf("%sand%s", 173 lflag ? " " : "", 174 lflag ? " " : "\n"); 175 if (unit(flen, fraction)) { 176 if (lflag) 177 (void)printf(" "); 178 pfract(flen); 179 rval = 1; 180 } 181 break; 182 } 183 if (!rval) 184 (void)printf("zero%s", lflag ? "" : ".\n"); 185 if (lflag) 186 (void)printf("\n"); 187 } 188 189 int 190 unit(len, p) 191 int len; 192 char *p; 193 { 194 int off, rval; 195 196 rval = 0; 197 if (len > 3) { 198 if (len % 3) { 199 off = len % 3; 200 len -= off; 201 if (number(p, off)) { 202 rval = 1; 203 (void)printf(" %s%s", 204 name3[len / 3], lflag ? " " : ".\n"); 205 } 206 p += off; 207 } 208 for (; len > 3; p += 3) { 209 len -= 3; 210 if (number(p, 3)) { 211 rval = 1; 212 (void)printf(" %s%s", 213 name3[len / 3], lflag ? " " : ".\n"); 214 } 215 } 216 } 217 if (number(p, len)) { 218 if (!lflag) 219 (void)printf(".\n"); 220 rval = 1; 221 } 222 return (rval); 223 } 224 225 int 226 number(p, len) 227 char *p; 228 int len; 229 { 230 int val, rval; 231 232 rval = 0; 233 switch (len) { 234 case 3: 235 if (*p != '0') { 236 rval = 1; 237 (void)printf("%s hundred", name1[*p - '0']); 238 } 239 ++p; 240 /* FALLTHROUGH */ 241 case 2: 242 val = (p[1] - '0') + (p[0] - '0') * 10; 243 if (val) { 244 if (rval) 245 (void)printf(" "); 246 if (val < 20) 247 (void)printf("%s", name1[val]); 248 else { 249 (void)printf("%s", name2[val / 10]); 250 if (val % 10) 251 (void)printf("-%s", name1[val % 10]); 252 } 253 rval = 1; 254 } 255 break; 256 case 1: 257 if (*p != '0') { 258 rval = 1; 259 (void)printf("%s", name1[*p - '0']); 260 } 261 } 262 return (rval); 263 } 264 265 void 266 pfract(len) 267 int len; 268 { 269 static char *pref[] = { "", "ten-", "hundred-" }; 270 271 switch(len) { 272 case 1: 273 (void)printf("tenths.\n"); 274 break; 275 case 2: 276 (void)printf("hundredths.\n"); 277 break; 278 default: 279 (void)printf("%s%sths.\n", pref[len % 3], name3[len / 3]); 280 break; 281 } 282 } 283 284 void 285 usage() 286 { 287 (void)fprintf(stderr, "usage: number [# ...]\n"); 288 exit(1); 289 } 290