395 lines
8.6 KiB
C
395 lines
8.6 KiB
C
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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/*
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* jot - print sequential or random data
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*
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* Author: John Kunze, Office of Comp. Affairs, UCB
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*/
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#define REPS_DEF 100
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#define BEGIN_DEF 1
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#define ENDER_DEF 100
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#define STEP_DEF 1
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#define isdefault(s) (strcmp((s), "-") == 0)
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double begin;
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double ender;
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double s;
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long reps;
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int randomize;
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int infinity;
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int boring;
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int prec;
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int dox;
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int chardata;
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int nofinalnl;
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char *sepstring = "\n";
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char format[BUFSIZ];
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void error __P((char *, char *));
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void getargs __P((int, char *[]));
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void getformat __P((void));
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int getprec __P((char *));
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void putdata __P((double, long));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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double xd, yd;
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long id;
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register double *x = &xd;
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register double *y = &yd;
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register long *i = &id;
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getargs(argc, argv);
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if (randomize) {
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*x = (ender - begin) * (ender > begin ? 1 : -1);
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srandom((unsigned long) s);
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for (*i = 1; *i <= reps || infinity; (*i)++) {
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*y = (double) random() / LONG_MAX;
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putdata(*y * *x + begin, reps - *i);
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}
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}
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else
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for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s)
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putdata(*x, reps - *i);
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if (!nofinalnl)
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putchar('\n');
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exit(0);
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}
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void
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getargs(ac, av)
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int ac;
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char *av[];
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{
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register unsigned int mask = 0;
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register int n = 0;
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while (--ac && **++av == '-' && !isdefault(*av))
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switch ((*av)[1]) {
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case 'r':
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randomize = 1;
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break;
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case 'c':
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chardata = 1;
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break;
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case 'n':
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nofinalnl = 1;
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break;
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case 'b':
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boring = 1;
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case 'w':
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if ((*av)[2])
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strcpy(format, *av + 2);
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else if (!--ac)
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error("Need context word after -w or -b", "");
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else
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strcpy(format, *++av);
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break;
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case 's':
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if ((*av)[2])
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sepstring = *av + 2;
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else if (!--ac)
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error("Need string after -s", "");
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else
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sepstring = *++av;
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break;
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case 'p':
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if ((*av)[2])
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prec = atoi(*av + 2);
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else if (!--ac)
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error("Need number after -p", "");
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else
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prec = atoi(*++av);
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if (prec <= 0)
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error("Bad precision value", "");
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break;
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default:
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error("Unknown option %s", *av);
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}
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switch (ac) { /* examine args right to left, falling thru cases */
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case 4:
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if (!isdefault(av[3])) {
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if (!sscanf(av[3], "%lf", &s))
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error("Bad s value: %s", av[3]);
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mask |= 01;
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}
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case 3:
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if (!isdefault(av[2])) {
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if (!sscanf(av[2], "%lf", &ender))
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ender = av[2][strlen(av[2])-1];
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mask |= 02;
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if (!prec)
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n = getprec(av[2]);
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}
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case 2:
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if (!isdefault(av[1])) {
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if (!sscanf(av[1], "%lf", &begin))
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begin = av[1][strlen(av[1])-1];
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mask |= 04;
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if (!prec)
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prec = getprec(av[1]);
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if (n > prec) /* maximum precision */
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prec = n;
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}
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case 1:
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if (!isdefault(av[0])) {
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if (!sscanf(av[0], "%ld", &reps))
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error("Bad reps value: %s", av[0]);
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mask |= 010;
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}
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break;
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case 0:
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error("jot - print sequential or random data", "");
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default:
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error("Too many arguments. What do you mean by %s?", av[4]);
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}
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getformat();
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while (mask) /* 4 bit mask has 1's where last 4 args were given */
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switch (mask) { /* fill in the 0's by default or computation */
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case 001:
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reps = REPS_DEF;
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mask = 011;
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break;
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case 002:
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reps = REPS_DEF;
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mask = 012;
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break;
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case 003:
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reps = REPS_DEF;
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mask = 013;
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break;
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case 004:
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reps = REPS_DEF;
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mask = 014;
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break;
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case 005:
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reps = REPS_DEF;
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mask = 015;
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break;
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case 006:
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reps = REPS_DEF;
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mask = 016;
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break;
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case 007:
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if (randomize) {
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reps = REPS_DEF;
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mask = 0;
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break;
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}
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if (s == 0.0) {
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reps = 0;
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mask = 0;
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break;
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}
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reps = (ender - begin + s) / s;
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if (reps <= 0)
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error("Impossible stepsize", "");
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mask = 0;
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break;
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case 010:
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begin = BEGIN_DEF;
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mask = 014;
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break;
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case 011:
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begin = BEGIN_DEF;
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mask = 015;
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break;
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case 012:
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s = (randomize ? time(NULL) ^ getpid() : STEP_DEF);
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mask = 013;
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break;
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case 013:
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if (randomize)
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begin = BEGIN_DEF;
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else if (reps == 0)
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error("Must specify begin if reps == 0", "");
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begin = ender - reps * s + s;
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mask = 0;
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break;
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case 014:
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s = (randomize ? time(NULL) ^ getpid() : STEP_DEF);
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mask = 015;
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break;
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case 015:
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if (randomize)
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ender = ENDER_DEF;
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else
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ender = begin + reps * s - s;
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mask = 0;
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break;
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case 016:
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if (randomize)
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s = time(NULL) ^ getpid();
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else if (reps == 0)
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error("Infinite sequences cannot be bounded",
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"");
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else if (reps == 1)
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s = 0.0;
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else
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s = (ender - begin) / (reps - 1);
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mask = 0;
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break;
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case 017: /* if reps given and implied, */
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if (!randomize && s != 0.0) {
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long t = (ender - begin + s) / s;
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if (t <= 0)
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error("Impossible stepsize", "");
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if (t < reps) /* take lesser */
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reps = t;
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}
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mask = 0;
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break;
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default:
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error("Bad mask", "");
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}
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if (reps == 0)
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infinity = 1;
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}
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void
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putdata(x, notlast)
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double x;
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long notlast;
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{
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long d = x;
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register long *dp = &d;
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if (boring) /* repeated word */
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printf(format);
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else if (dox) /* scalar */
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printf(format, *dp);
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else /* real */
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printf(format, x);
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if (notlast != 0)
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fputs(sepstring, stdout);
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}
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void
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error(msg, s)
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char *msg, *s;
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{
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fprintf(stderr, "jot: ");
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fprintf(stderr, msg, s);
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fprintf(stderr,
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"\nusage: jot [ options ] [ reps [ begin [ end [ s ] ] ] ]\n");
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if (strncmp("jot - ", msg, 6) == 0)
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fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s\t%s",
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"-r random data\n",
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"-c character data\n",
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"-n no final newline\n",
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"-b word repeated word\n",
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"-w word context word\n",
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"-s string data separator\n",
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"-p precision number of characters\n");
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exit(1);
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}
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int
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getprec(s)
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char *s;
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{
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register char *p;
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register char *q;
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for (p = s; *p; p++)
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if (*p == '.')
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break;
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if (!*p)
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return (0);
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for (q = ++p; *p; p++)
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if (!isdigit(*p))
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break;
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return (p - q);
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}
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void
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getformat()
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{
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register char *p;
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if (boring) /* no need to bother */
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return;
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for (p = format; *p; p++) /* look for '%' */
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if (*p == '%' && *(p+1) != '%') /* leave %% alone */
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break;
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if (!*p && !chardata)
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sprintf(p, "%%.%df", prec);
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else if (!*p && chardata) {
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strcpy(p, "%c");
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dox = 1;
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}
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else if (!*(p+1))
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strcat(format, "%"); /* cannot end in single '%' */
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else {
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while (!isalpha(*p))
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p++;
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switch (*p) {
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case 'f': case 'e': case 'g': case '%':
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break;
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case 's':
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error("Cannot convert numeric data to strings", "");
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break;
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/* case 'd': case 'o': case 'x': case 'D': case 'O': case 'X':
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case 'c': case 'u': */
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default:
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dox = 1;
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break;
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}
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}
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}
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