4.3BSD - /usr/src/new/tools/src/jot.c

   1: /* Copyright (c) 1983 Regents of the University of California */
   2: 
   3: #ifndef lint
   4: static char sccsid[] = "@(#)jot.c	4.3	(Berkeley)	4/5/86";
   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:     exit(0);
  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;
  93:         case 'n':
  94:             nofinalnl = 1;
  95:             break;
  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;
 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)
 280:         fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s",
 281:             "-r		random data\n",
 282:             "-c		character data\n",
 283:             "-n		no final newline\n",
 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: }

Defined functions

Defined variables

Defined macros