Make this compile with gcc40: rename variables so that they don't collide
[dragonfly.git] / games / number / number.c
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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.
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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 $
e1acdbad 36 * $DragonFly: src/games/number/number.c,v 1.4 2005/04/25 16:10:24 liamfoy Exp $
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37 */
38
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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
50static 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
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72void convert (char *);
73int number (char *, int);
74void pfract (int);
75void toobig (void);
76int unit (int, char *);
77void usage (void);
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78
79int lflag;
80
81int
e1acdbad 82main(int argc, char **argv)
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83{
84 int ch, first;
85 char line[256];
86
87 lflag = 0;
88 while ((ch = getopt(argc, argv, "l")) != -1)
89 switch (ch) {
90 case 'l':
91 lflag = 1;
92 break;
93 case '?':
94 default:
95 usage();
96 }
97 argc -= optind;
98 argv += optind;
99
100 if (*argv == NULL)
101 for (first = 1;
102 fgets(line, sizeof(line), stdin) != NULL; first = 0) {
103 if (strchr(line, '\n') == NULL)
104 errx(1, "line too long.");
105 if (!first)
106 (void)printf("...\n");
107 convert(line);
108 }
109 else
110 for (first = 1; *argv != NULL; first = 0, ++argv) {
111 if (!first)
112 (void)printf("...\n");
113 convert(*argv);
114 }
115 exit(0);
116}
117
118void
e1acdbad 119convert(char *line)
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120{
121 int flen, len, rval;
122 char *p, *fraction;
123
124 flen = NULL;
125 fraction = NULL;
126 for (p = line; *p != '\0' && *p != '\n'; ++p) {
127 if (isblank(*p)) {
128 if (p == line) {
129 ++line;
130 continue;
131 }
132 goto badnum;
133 }
134 if (isdigit(*p))
135 continue;
136 switch (*p) {
137 case '.':
138 if (fraction != NULL)
139 goto badnum;
140 fraction = p + 1;
141 *p = '\0';
142 break;
143 case '-':
144 if (p == line)
145 break;
146 /* FALLTHROUGH */
147 default:
148badnum: errx(1, "illegal number: %s", line);
149 break;
150 }
151 }
152 *p = '\0';
153
154 if ((len = strlen(line)) > MAXNUM ||
155 (fraction != NULL && ((flen = strlen(fraction)) > MAXNUM)))
156 errx(1, "number too large, max %d digits.", MAXNUM);
157
158 if (*line == '-') {
159 (void)printf("minus%s", lflag ? " " : "\n");
160 ++line;
161 --len;
162 }
163
164 rval = len > 0 ? unit(len, line) : 0;
165 if (fraction != NULL && flen != 0)
166 for (p = fraction; *p != '\0'; ++p)
167 if (*p != '0') {
168 if (rval)
169 (void)printf("%sand%s",
170 lflag ? " " : "",
171 lflag ? " " : "\n");
172 if (unit(flen, fraction)) {
173 if (lflag)
174 (void)printf(" ");
175 pfract(flen);
176 rval = 1;
177 }
178 break;
179 }
180 if (!rval)
181 (void)printf("zero%s", lflag ? "" : ".\n");
182 if (lflag)
183 (void)printf("\n");
184}
185
186int
e1acdbad 187unit(int len, char *p)
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188{
189 int off, rval;
190
191 rval = 0;
192 if (len > 3) {
193 if (len % 3) {
194 off = len % 3;
195 len -= off;
196 if (number(p, off)) {
197 rval = 1;
198 (void)printf(" %s%s",
199 name3[len / 3], lflag ? " " : ".\n");
200 }
201 p += off;
202 }
203 for (; len > 3; p += 3) {
204 len -= 3;
205 if (number(p, 3)) {
206 rval = 1;
207 (void)printf(" %s%s",
208 name3[len / 3], lflag ? " " : ".\n");
209 }
210 }
211 }
212 if (number(p, len)) {
213 if (!lflag)
214 (void)printf(".\n");
215 rval = 1;
216 }
217 return (rval);
218}
219
220int
e1acdbad 221number(char *p, int len)
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222{
223 int val, rval;
224
225 rval = 0;
226 switch (len) {
227 case 3:
228 if (*p != '0') {
229 rval = 1;
230 (void)printf("%s hundred", name1[*p - '0']);
231 }
232 ++p;
233 /* FALLTHROUGH */
234 case 2:
235 val = (p[1] - '0') + (p[0] - '0') * 10;
236 if (val) {
237 if (rval)
238 (void)printf(" ");
239 if (val < 20)
240 (void)printf("%s", name1[val]);
241 else {
242 (void)printf("%s", name2[val / 10]);
243 if (val % 10)
244 (void)printf("-%s", name1[val % 10]);
245 }
246 rval = 1;
247 }
248 break;
249 case 1:
250 if (*p != '0') {
251 rval = 1;
252 (void)printf("%s", name1[*p - '0']);
253 }
254 }
255 return (rval);
256}
257
258void
e1acdbad 259pfract(int len)
984263bc 260{
e1acdbad 261 static const char *pref[] = { "", "ten-", "hundred-" };
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262
263 switch(len) {
264 case 1:
265 (void)printf("tenths.\n");
266 break;
267 case 2:
268 (void)printf("hundredths.\n");
269 break;
270 default:
271 (void)printf("%s%sths.\n", pref[len % 3], name3[len / 3]);
272 break;
273 }
274}
275
276void
e1acdbad 277usage(void)
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278{
279 (void)fprintf(stderr, "usage: number [# ...]\n");
280 exit(1);
281}