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176148fb SL |
1 | /* Copyright (c) 1983 Regents of the University of California */ |
2 | ||
3 | #ifndef lint | |
95f51977 | 4 | static char sccsid[] = "@(#)jot.c 4.3 (Berkeley) 4/5/86"; |
176148fb SL |
5 | #endif not lint |
6 | ||
7 | /* | |
8 | * jot - print sequential or random data | |
9 | * Author: John Kunze, Office of Comp. Affairs, UCB | |
10 | */ | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <ctype.h> | |
14 | ||
15 | #define REPS_DEF 100 | |
16 | #define BEGIN_DEF 1 | |
17 | #define ENDER_DEF 100 | |
18 | #define STEP_DEF 1 | |
19 | ||
2ab56523 JK |
20 | #define BSD4_2 1 |
21 | #if BSD4_2 | |
22 | #define RAND random | |
23 | #define SRAND srandom | |
24 | long RAND(); | |
25 | #else | |
26 | #define RAND rand | |
27 | #define SRAND srand | |
28 | #endif | |
29 | ||
176148fb SL |
30 | #define isdefault(s) (strcmp((s), "-") == 0) |
31 | #define LARGESTINT (~ (unsigned) 0 >> 1) | |
32 | #define CASE break; case | |
33 | ||
34 | char *sepstring = "\n"; | |
35 | char format[BUFSIZ]; | |
36 | char buf[BUFSIZ]; | |
37 | int randomize; | |
38 | int infinity; | |
39 | int boring; | |
40 | int prec; | |
41 | int dox; | |
42 | int chardata; | |
2ab56523 | 43 | int nofinalnl; |
176148fb SL |
44 | |
45 | long reps; | |
46 | double begin; | |
47 | double ender; | |
48 | double s; | |
49 | ||
50 | main(argc, argv) | |
51 | int argc; | |
52 | char **argv; | |
53 | { | |
54 | double xd, yd; | |
55 | long id; | |
56 | register double *x = &xd; | |
57 | register double *y = &yd; | |
58 | register long *i = &id; | |
59 | ||
60 | setbuf(stdout, buf); | |
61 | getargs(argc, argv); | |
62 | if (randomize) { | |
63 | *x = (ender - begin) * (ender > begin ? 1 : -1); | |
2ab56523 | 64 | SRAND((int) s); |
176148fb | 65 | for (*i = 1; *i <= reps || infinity; (*i)++) { |
2ab56523 | 66 | *y = (double) RAND() / LARGESTINT; |
176148fb SL |
67 | putdata(*y * *x + begin, reps - *i); |
68 | } | |
69 | } | |
70 | else | |
71 | for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s) | |
72 | putdata(*x, reps - *i); | |
2ab56523 JK |
73 | if (!nofinalnl) |
74 | putchar('\n'); | |
76df4363 | 75 | exit(0); |
176148fb SL |
76 | } |
77 | ||
78 | getargs(ac, av) | |
79 | int ac; | |
80 | char **av; | |
81 | { | |
82 | register unsigned int mask = 0; | |
83 | register int n = 0; | |
84 | ||
85 | while (--ac && **++av == '-' && !isdefault(*av)) | |
86 | switch ((*av)[1]) { | |
87 | case 'r': | |
88 | randomize = 1; | |
89 | break; | |
90 | case 'c': | |
91 | chardata = 1; | |
92 | break; | |
2ab56523 JK |
93 | case 'n': |
94 | nofinalnl = 1; | |
95 | break; | |
176148fb SL |
96 | case 'b': |
97 | boring = 1; | |
98 | case 'w': | |
99 | if ((*av)[2]) | |
100 | strcpy(format, *av + 2); | |
101 | else if (!--ac) | |
102 | error("Need context word after -w or -b", ""); | |
103 | else | |
104 | strcpy(format, *++av); | |
105 | break; | |
106 | case 's': | |
107 | if ((*av)[2]) | |
108 | strcpy(sepstring, *av + 2); | |
109 | else if (!--ac) | |
110 | error("Need string after -s", ""); | |
111 | else | |
112 | strcpy(sepstring, *++av); | |
113 | break; | |
114 | case 'p': | |
115 | if ((*av)[2]) | |
116 | prec = atoi(*av + 2); | |
117 | else if (!--ac) | |
118 | error("Need number after -p", ""); | |
119 | else | |
120 | prec = atoi(*++av); | |
121 | if (prec <= 0) | |
122 | error("Bad precision value", ""); | |
123 | break; | |
124 | default: | |
125 | error("Unknown option %s", *av); | |
126 | } | |
127 | switch (ac) { /* examine args right to left, falling thru cases */ | |
128 | case 4: | |
129 | if (!isdefault(av[3])) { | |
130 | if (!sscanf(av[3], "%F", &s)) | |
131 | error("Bad s value: %s", av[3]); | |
132 | mask |= 01; | |
133 | } | |
134 | case 3: | |
135 | if (!isdefault(av[2])) { | |
136 | if (!sscanf(av[2], "%F", &ender)) | |
137 | ender = av[2][strlen(av[2])-1]; | |
138 | mask |= 02; | |
139 | if (!prec) | |
140 | n = getprec(av[2]); | |
141 | } | |
142 | case 2: | |
143 | if (!isdefault(av[1])) { | |
144 | if (!sscanf(av[1], "%F", &begin)) | |
145 | begin = av[1][strlen(av[1])-1]; | |
146 | mask |= 04; | |
147 | if (!prec) | |
148 | prec = getprec(av[1]); | |
149 | if (n > prec) /* maximum precision */ | |
150 | prec = n; | |
151 | } | |
152 | case 1: | |
153 | if (!isdefault(av[0])) { | |
154 | if (!sscanf(av[0], "%D", &reps)) | |
155 | error("Bad reps value: %s", av[0]); | |
156 | mask |= 010; | |
157 | } | |
158 | break; | |
159 | case 0: | |
160 | error("jot - print sequential or random data", ""); | |
161 | default: | |
162 | error("Too many arguments. What do you mean by %s?", av[4]); | |
163 | } | |
164 | getformat(); | |
165 | while (mask) /* 4 bit mask has 1's where last 4 args were given */ | |
166 | switch (mask) { /* fill in the 0's by default or computation */ | |
167 | CASE 001: | |
168 | reps = REPS_DEF; | |
169 | mask = 011; | |
170 | CASE 002: | |
171 | reps = REPS_DEF; | |
172 | mask = 012; | |
173 | CASE 003: | |
174 | reps = REPS_DEF; | |
175 | mask = 013; | |
176 | CASE 004: | |
177 | reps = REPS_DEF; | |
178 | mask = 014; | |
179 | CASE 005: | |
180 | reps = REPS_DEF; | |
181 | mask = 015; | |
182 | CASE 006: | |
183 | reps = REPS_DEF; | |
184 | mask = 016; | |
185 | CASE 007: | |
186 | if (randomize) { | |
187 | reps = REPS_DEF; | |
188 | mask = 0; | |
189 | break; | |
190 | } | |
191 | if (s == 0.0) { | |
192 | reps = 0; | |
193 | mask = 0; | |
194 | break; | |
195 | } | |
196 | reps = (ender - begin + s) / s; | |
197 | if (reps <= 0) | |
198 | error("Impossible stepsize", ""); | |
199 | mask = 0; | |
200 | CASE 010: | |
201 | begin = BEGIN_DEF; | |
202 | mask = 014; | |
203 | CASE 011: | |
204 | begin = BEGIN_DEF; | |
205 | mask = 015; | |
206 | CASE 012: | |
207 | s = (randomize ? time(0) : STEP_DEF); | |
208 | mask = 013; | |
209 | CASE 013: | |
210 | if (randomize) | |
211 | begin = BEGIN_DEF; | |
212 | else if (reps == 0) | |
213 | error("Must specify begin if reps == 0", ""); | |
214 | begin = ender - reps * s + s; | |
215 | mask = 0; | |
216 | CASE 014: | |
217 | s = (randomize ? time(0) : STEP_DEF); | |
218 | mask = 015; | |
219 | CASE 015: | |
220 | if (randomize) | |
221 | ender = ENDER_DEF; | |
222 | else | |
223 | ender = begin + reps * s - s; | |
224 | mask = 0; | |
225 | CASE 016: | |
226 | if (randomize) | |
227 | s = time(0); | |
228 | else if (reps == 0) | |
229 | error("Infinite sequences cannot be bounded", ""); | |
230 | else if (reps == 1) | |
231 | s = 0.0; | |
232 | else | |
233 | s = (ender - begin) / (reps - 1); | |
234 | mask = 0; | |
235 | CASE 017: | |
236 | if (!randomize && s != 0.0) { /* if reps given and implied, */ | |
237 | long t = (ender - begin + s) / s; | |
238 | if (t <= 0) | |
239 | error("Impossible stepsize", ""); | |
240 | if (t < reps) /* take lesser */ | |
241 | reps = t; | |
242 | } | |
243 | mask = 0; | |
244 | break; | |
245 | default: | |
246 | error("Bad mask", ""); | |
247 | } | |
248 | if (reps == 0) | |
249 | infinity = 1; | |
250 | } | |
251 | ||
252 | putdata(x, notlast) | |
253 | double x; | |
254 | long notlast; | |
255 | { | |
256 | long d = x; | |
176148fb SL |
257 | register long *dp = &d; |
258 | ||
259 | if (boring) /* repeated word */ | |
260 | printf(format); | |
261 | else if (dox) /* scalar */ | |
262 | printf(format, *dp); | |
263 | else /* real */ | |
264 | printf(format, x); | |
265 | if (notlast != 0) | |
266 | fputs(sepstring, stdout); | |
267 | } | |
268 | ||
269 | error(msg, s) | |
270 | char *msg; | |
271 | char *s; | |
272 | { | |
273 | char buf[BUFSIZ]; | |
274 | ||
275 | setbuf(stderr, buf); | |
276 | fprintf(stderr, "jot: "); | |
277 | fprintf(stderr, msg, s); | |
278 | fprintf(stderr, "\nUsage: jot [ options ] [ reps [ begin [ end [ s ] ] ] ]\n"); | |
279 | if (strncmp("jot - ", msg, 6) == 0) | |
2ab56523 | 280 | fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s", |
176148fb SL |
281 | "-r random data\n", |
282 | "-c character data\n", | |
2ab56523 | 283 | "-n no final newline\n", |
176148fb SL |
284 | "-b word repeated word\n", |
285 | "-w word context word\n", | |
286 | "-s string data separator\n", | |
287 | "-p precision number of characters\n"); | |
288 | exit(1); | |
289 | } | |
290 | ||
291 | getprec(s) | |
292 | char *s; | |
293 | { | |
294 | register char *p; | |
295 | register char *q; | |
296 | ||
297 | for (p = s; *p; p++) | |
298 | if (*p == '.') | |
299 | break; | |
300 | if (!*p) | |
301 | return(0); | |
302 | for (q = ++p; *p; p++) | |
303 | if (!isdigit(*p)) | |
304 | break; | |
305 | return(p - q); | |
306 | } | |
307 | ||
308 | getformat() | |
309 | { | |
310 | register char *p; | |
311 | ||
312 | if (boring) /* no need to bother */ | |
313 | return; | |
314 | for (p = format; *p; p++) /* look for '%' */ | |
315 | if (*p == '%' && *(p+1) != '%') /* leave %% alone */ | |
316 | break; | |
317 | if (!*p && !chardata) | |
318 | sprintf(p, "%%.%df", prec); | |
319 | else if (!*p && chardata) { | |
320 | strcpy(p, "%c"); | |
321 | dox = 1; | |
322 | } | |
323 | else if (!*(p+1)) | |
324 | strcat(format, "%"); /* cannot end in single '%' */ | |
325 | else { | |
326 | while (!isalpha(*p)) | |
327 | p++; | |
328 | switch (*p) { | |
329 | case 'f': case 'e': case 'g': case '%': | |
330 | break; | |
331 | case 's': | |
332 | error("Cannot convert numeric data to strings", ""); | |
333 | break; | |
334 | /* case 'd': case 'o': case 'x': case 'D': case 'O': case 'X': | |
335 | case 'c': case 'u': */ | |
336 | default: | |
337 | dox = 1; | |
338 | break; | |
339 | } | |
340 | } | |
341 | } |