| 1 | /* Copyright (c) 1983 Regents of the University of California */ |
| 2 | |
| 3 | #ifndef lint |
| 4 | static char sccsid[] = "@(#)jot.c 4.2 (Berkeley) %G%"; |
| 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 | |
| 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 | |
| 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; |
| 43 | int nofinalnl; |
| 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); |
| 64 | SRAND((int) s); |
| 65 | for (*i = 1; *i <= reps || infinity; (*i)++) { |
| 66 | *y = (double) RAND() / LARGESTINT; |
| 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); |
| 73 | if (!nofinalnl) |
| 74 | putchar('\n'); |
| 75 | } |
| 76 | |
| 77 | getargs(ac, av) |
| 78 | int ac; |
| 79 | char **av; |
| 80 | { |
| 81 | register unsigned int mask = 0; |
| 82 | register int n = 0; |
| 83 | |
| 84 | while (--ac && **++av == '-' && !isdefault(*av)) |
| 85 | switch ((*av)[1]) { |
| 86 | case 'r': |
| 87 | randomize = 1; |
| 88 | break; |
| 89 | case 'c': |
| 90 | chardata = 1; |
| 91 | break; |
| 92 | case 'n': |
| 93 | nofinalnl = 1; |
| 94 | break; |
| 95 | case 'b': |
| 96 | boring = 1; |
| 97 | case 'w': |
| 98 | if ((*av)[2]) |
| 99 | strcpy(format, *av + 2); |
| 100 | else if (!--ac) |
| 101 | error("Need context word after -w or -b", ""); |
| 102 | else |
| 103 | strcpy(format, *++av); |
| 104 | break; |
| 105 | case 's': |
| 106 | if ((*av)[2]) |
| 107 | strcpy(sepstring, *av + 2); |
| 108 | else if (!--ac) |
| 109 | error("Need string after -s", ""); |
| 110 | else |
| 111 | strcpy(sepstring, *++av); |
| 112 | break; |
| 113 | case 'p': |
| 114 | if ((*av)[2]) |
| 115 | prec = atoi(*av + 2); |
| 116 | else if (!--ac) |
| 117 | error("Need number after -p", ""); |
| 118 | else |
| 119 | prec = atoi(*++av); |
| 120 | if (prec <= 0) |
| 121 | error("Bad precision value", ""); |
| 122 | break; |
| 123 | default: |
| 124 | error("Unknown option %s", *av); |
| 125 | } |
| 126 | switch (ac) { /* examine args right to left, falling thru cases */ |
| 127 | case 4: |
| 128 | if (!isdefault(av[3])) { |
| 129 | if (!sscanf(av[3], "%F", &s)) |
| 130 | error("Bad s value: %s", av[3]); |
| 131 | mask |= 01; |
| 132 | } |
| 133 | case 3: |
| 134 | if (!isdefault(av[2])) { |
| 135 | if (!sscanf(av[2], "%F", &ender)) |
| 136 | ender = av[2][strlen(av[2])-1]; |
| 137 | mask |= 02; |
| 138 | if (!prec) |
| 139 | n = getprec(av[2]); |
| 140 | } |
| 141 | case 2: |
| 142 | if (!isdefault(av[1])) { |
| 143 | if (!sscanf(av[1], "%F", &begin)) |
| 144 | begin = av[1][strlen(av[1])-1]; |
| 145 | mask |= 04; |
| 146 | if (!prec) |
| 147 | prec = getprec(av[1]); |
| 148 | if (n > prec) /* maximum precision */ |
| 149 | prec = n; |
| 150 | } |
| 151 | case 1: |
| 152 | if (!isdefault(av[0])) { |
| 153 | if (!sscanf(av[0], "%D", &reps)) |
| 154 | error("Bad reps value: %s", av[0]); |
| 155 | mask |= 010; |
| 156 | } |
| 157 | break; |
| 158 | case 0: |
| 159 | error("jot - print sequential or random data", ""); |
| 160 | default: |
| 161 | error("Too many arguments. What do you mean by %s?", av[4]); |
| 162 | } |
| 163 | getformat(); |
| 164 | while (mask) /* 4 bit mask has 1's where last 4 args were given */ |
| 165 | switch (mask) { /* fill in the 0's by default or computation */ |
| 166 | CASE 001: |
| 167 | reps = REPS_DEF; |
| 168 | mask = 011; |
| 169 | CASE 002: |
| 170 | reps = REPS_DEF; |
| 171 | mask = 012; |
| 172 | CASE 003: |
| 173 | reps = REPS_DEF; |
| 174 | mask = 013; |
| 175 | CASE 004: |
| 176 | reps = REPS_DEF; |
| 177 | mask = 014; |
| 178 | CASE 005: |
| 179 | reps = REPS_DEF; |
| 180 | mask = 015; |
| 181 | CASE 006: |
| 182 | reps = REPS_DEF; |
| 183 | mask = 016; |
| 184 | CASE 007: |
| 185 | if (randomize) { |
| 186 | reps = REPS_DEF; |
| 187 | mask = 0; |
| 188 | break; |
| 189 | } |
| 190 | if (s == 0.0) { |
| 191 | reps = 0; |
| 192 | mask = 0; |
| 193 | break; |
| 194 | } |
| 195 | reps = (ender - begin + s) / s; |
| 196 | if (reps <= 0) |
| 197 | error("Impossible stepsize", ""); |
| 198 | mask = 0; |
| 199 | CASE 010: |
| 200 | begin = BEGIN_DEF; |
| 201 | mask = 014; |
| 202 | CASE 011: |
| 203 | begin = BEGIN_DEF; |
| 204 | mask = 015; |
| 205 | CASE 012: |
| 206 | s = (randomize ? time(0) : STEP_DEF); |
| 207 | mask = 013; |
| 208 | CASE 013: |
| 209 | if (randomize) |
| 210 | begin = BEGIN_DEF; |
| 211 | else if (reps == 0) |
| 212 | error("Must specify begin if reps == 0", ""); |
| 213 | begin = ender - reps * s + s; |
| 214 | mask = 0; |
| 215 | CASE 014: |
| 216 | s = (randomize ? time(0) : STEP_DEF); |
| 217 | mask = 015; |
| 218 | CASE 015: |
| 219 | if (randomize) |
| 220 | ender = ENDER_DEF; |
| 221 | else |
| 222 | ender = begin + reps * s - s; |
| 223 | mask = 0; |
| 224 | CASE 016: |
| 225 | if (randomize) |
| 226 | s = time(0); |
| 227 | else if (reps == 0) |
| 228 | error("Infinite sequences cannot be bounded", ""); |
| 229 | else if (reps == 1) |
| 230 | s = 0.0; |
| 231 | else |
| 232 | s = (ender - begin) / (reps - 1); |
| 233 | mask = 0; |
| 234 | CASE 017: |
| 235 | if (!randomize && s != 0.0) { /* if reps given and implied, */ |
| 236 | long t = (ender - begin + s) / s; |
| 237 | if (t <= 0) |
| 238 | error("Impossible stepsize", ""); |
| 239 | if (t < reps) /* take lesser */ |
| 240 | reps = t; |
| 241 | } |
| 242 | mask = 0; |
| 243 | break; |
| 244 | default: |
| 245 | error("Bad mask", ""); |
| 246 | } |
| 247 | if (reps == 0) |
| 248 | infinity = 1; |
| 249 | } |
| 250 | |
| 251 | putdata(x, notlast) |
| 252 | double x; |
| 253 | long notlast; |
| 254 | { |
| 255 | long d = x; |
| 256 | register char *r; |
| 257 | register char *e; |
| 258 | register long *dp = &d; |
| 259 | |
| 260 | if (boring) /* repeated word */ |
| 261 | printf(format); |
| 262 | else if (dox) /* scalar */ |
| 263 | printf(format, *dp); |
| 264 | else /* real */ |
| 265 | printf(format, x); |
| 266 | if (notlast != 0) |
| 267 | fputs(sepstring, stdout); |
| 268 | } |
| 269 | |
| 270 | error(msg, s) |
| 271 | char *msg; |
| 272 | char *s; |
| 273 | { |
| 274 | char buf[BUFSIZ]; |
| 275 | |
| 276 | setbuf(stderr, buf); |
| 277 | fprintf(stderr, "jot: "); |
| 278 | fprintf(stderr, msg, s); |
| 279 | fprintf(stderr, "\nUsage: jot [ options ] [ reps [ begin [ end [ s ] ] ] ]\n"); |
| 280 | if (strncmp("jot - ", msg, 6) == 0) |
| 281 | fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s", |
| 282 | "-r random data\n", |
| 283 | "-c character data\n", |
| 284 | "-n no final newline\n", |
| 285 | "-b word repeated word\n", |
| 286 | "-w word context word\n", |
| 287 | "-s string data separator\n", |
| 288 | "-p precision number of characters\n"); |
| 289 | exit(1); |
| 290 | } |
| 291 | |
| 292 | getprec(s) |
| 293 | char *s; |
| 294 | { |
| 295 | register char *p; |
| 296 | register char *q; |
| 297 | |
| 298 | for (p = s; *p; p++) |
| 299 | if (*p == '.') |
| 300 | break; |
| 301 | if (!*p) |
| 302 | return(0); |
| 303 | for (q = ++p; *p; p++) |
| 304 | if (!isdigit(*p)) |
| 305 | break; |
| 306 | return(p - q); |
| 307 | } |
| 308 | |
| 309 | getformat() |
| 310 | { |
| 311 | register char *p; |
| 312 | |
| 313 | if (boring) /* no need to bother */ |
| 314 | return; |
| 315 | for (p = format; *p; p++) /* look for '%' */ |
| 316 | if (*p == '%' && *(p+1) != '%') /* leave %% alone */ |
| 317 | break; |
| 318 | if (!*p && !chardata) |
| 319 | sprintf(p, "%%.%df", prec); |
| 320 | else if (!*p && chardata) { |
| 321 | strcpy(p, "%c"); |
| 322 | dox = 1; |
| 323 | } |
| 324 | else if (!*(p+1)) |
| 325 | strcat(format, "%"); /* cannot end in single '%' */ |
| 326 | else { |
| 327 | while (!isalpha(*p)) |
| 328 | p++; |
| 329 | switch (*p) { |
| 330 | case 'f': case 'e': case 'g': case '%': |
| 331 | break; |
| 332 | case 's': |
| 333 | error("Cannot convert numeric data to strings", ""); |
| 334 | break; |
| 335 | /* case 'd': case 'o': case 'x': case 'D': case 'O': case 'X': |
| 336 | case 'c': case 'u': */ |
| 337 | default: |
| 338 | dox = 1; |
| 339 | break; |
| 340 | } |
| 341 | } |
| 342 | } |