[unix-history] / usr / src / usr.bin / jot / jot.c

/* Copyright (c) 1983 Regents of the University of California */

#ifndef lint
static char sccsid[] = "@(#)jot.c	4.2	(Berkeley)	%G%";
#endif not lint

/*
 *	jot - print sequential or random data
 *	Author:  John Kunze, Office of Comp. Affairs, UCB
 */

#include <stdio.h>
#include <ctype.h>

#define	REPS_DEF	100
#define	BEGIN_DEF	1
#define	ENDER_DEF	100
#define	STEP_DEF	1

#define BSD4_2		1
#if BSD4_2
#define RAND		random
#define SRAND		srandom
long RAND();
#else
#define RAND		rand
#define SRAND		srand
#endif

#define	isdefault(s)	(strcmp((s), "-") == 0)
#define	LARGESTINT	(~ (unsigned) 0 >> 1)
#define	CASE		break; case

char	*sepstring = "\n";
char	format[BUFSIZ];
char	buf[BUFSIZ];
int	randomize;
int	infinity;
int	boring;
int	prec;
int	dox;
int	chardata;
int	nofinalnl;

long	reps;
double	begin;
double	ender;
double	s;

main(argc, argv)
int	argc;
char	**argv;
{
	double	xd, yd;
	long	id;
	register double	*x = &xd;
	register double	*y = &yd;
	register long	*i = &id;

	setbuf(stdout, buf);
	getargs(argc, argv);
	if (randomize) {
		*x = (ender - begin) * (ender > begin ? 1 : -1);
		SRAND((int) s);
		for (*i = 1; *i <= reps || infinity; (*i)++) {
			*y = (double) RAND() / LARGESTINT;
			putdata(*y * *x + begin, reps - *i);
		}
	}
	else
		for (*i = 1, *x = begin; *i <= reps || infinity; (*i)++, *x += s)
			putdata(*x, reps - *i);
	if (!nofinalnl)
		putchar('\n');
}

getargs(ac, av)
int	ac;
char	**av;
{
	register unsigned int	mask = 0;
	register int		n = 0;

	while (--ac && **++av == '-' && !isdefault(*av))
		switch ((*av)[1]) {
		case 'r':
			randomize = 1;
			break;
		case 'c':
			chardata = 1;
			break;
		case 'n':
			nofinalnl = 1;
			break;
		case 'b':
			boring = 1;
		case 'w':
			if ((*av)[2])
				strcpy(format, *av + 2);
			else if (!--ac)
				error("Need context word after -w or -b", "");
			else
				strcpy(format, *++av);
			break;
		case 's':
			if ((*av)[2])
				strcpy(sepstring, *av + 2);
			else if (!--ac)
				error("Need string after -s", "");
			else
				strcpy(sepstring, *++av);
			break;
		case 'p':
			if ((*av)[2])
				prec = atoi(*av + 2);
			else if (!--ac)
				error("Need number after -p", "");
			else
				prec = atoi(*++av);
			if (prec <= 0)
				error("Bad precision value", "");
			break;
		default:
			error("Unknown option %s", *av);
		}
	switch (ac) {	/* examine args right to left, falling thru cases */
	case 4:
		if (!isdefault(av[3])) {
			if (!sscanf(av[3], "%F", &s))
				error("Bad s value:  %s", av[3]);
			mask |= 01;
		}
	case 3:
		if (!isdefault(av[2])) {
			if (!sscanf(av[2], "%F", &ender))
				ender = av[2][strlen(av[2])-1];
			mask |= 02;
			if (!prec)
				n = getprec(av[2]);
		}
	case 2:
		if (!isdefault(av[1])) {
			if (!sscanf(av[1], "%F", &begin))
				begin = av[1][strlen(av[1])-1];
			mask |= 04;
			if (!prec)
				prec = getprec(av[1]);
			if (n > prec)		/* maximum precision */
				prec = n;
		}
	case 1:
		if (!isdefault(av[0])) {
			if (!sscanf(av[0], "%D", &reps))
				error("Bad reps value:  %s", av[0]);
			mask |= 010;
		}
		break;
	case 0:
		error("jot - print sequential or random data", "");
	default:
		error("Too many arguments.  What do you mean by %s?", av[4]);
	}
	getformat();
	while (mask)	/* 4 bit mask has 1's where last 4 args were given */
		switch (mask) {	/* fill in the 0's by default or computation */
		CASE 001:
			reps = REPS_DEF;
			mask = 011;
		CASE 002:
			reps = REPS_DEF;
			mask = 012;
		CASE 003:
			reps = REPS_DEF;
			mask = 013;
		CASE 004:
			reps = REPS_DEF;
			mask = 014;
		CASE 005:
			reps = REPS_DEF;
			mask = 015;
		CASE 006:
			reps = REPS_DEF;
			mask = 016;
		CASE 007:
			if (randomize) {
				reps = REPS_DEF;
				mask = 0;
				break;
			}
			if (s == 0.0) {
				reps = 0;
				mask = 0;
				break;
			}
			reps = (ender - begin + s) / s;
			if (reps <= 0)
				error("Impossible stepsize", "");
			mask = 0;
		CASE 010:
			begin = BEGIN_DEF;
			mask = 014;
		CASE 011:
			begin = BEGIN_DEF;
			mask = 015;
		CASE 012:
			s = (randomize ? time(0) : STEP_DEF);
			mask = 013;
		CASE 013:
			if (randomize)
				begin = BEGIN_DEF;
			else if (reps == 0)
				error("Must specify begin if reps == 0", "");
			begin = ender - reps * s + s;
			mask = 0;
		CASE 014:
			s = (randomize ? time(0) : STEP_DEF);
			mask = 015;
		CASE 015:
			if (randomize)
				ender = ENDER_DEF;
			else
				ender = begin + reps * s - s;
			mask = 0;
		CASE 016:
			if (randomize)
				s = time(0);
			else if (reps == 0)
				error("Infinite sequences cannot be bounded", "");
			else if (reps == 1)
				s = 0.0;
			else
				s = (ender - begin) / (reps - 1);
			mask = 0;
		CASE 017:
			if (!randomize && s != 0.0) {	/* if reps given and implied, */
				long t = (ender - begin + s) / s;
				if (t <= 0)
					error("Impossible stepsize", "");
				if (t < reps)		/* take lesser */
					reps = t;
			}
			mask = 0;
			break;
		default:
			error("Bad mask", "");
		}
	if (reps == 0)
		infinity = 1;
}

putdata(x, notlast)
double	x;
long	notlast;
{
	long		d = x;
	register char	*r;
	register char	*e;
	register long	*dp = &d;

	if (boring)				/* repeated word */
		printf(format);
	else if (dox)				/* scalar */
		printf(format, *dp);
	else					/* real */
		printf(format, x);
	if (notlast != 0)
		fputs(sepstring, stdout);
}

error(msg, s)
char	*msg;
char	*s;
{
	char	buf[BUFSIZ];

	setbuf(stderr, buf);
	fprintf(stderr, "jot: ");
	fprintf(stderr, msg, s);
	fprintf(stderr, "\nUsage:  jot [ options ] [ reps [ begin [ end [ s ] ] ] ]\n");
	if (strncmp("jot - ", msg, 6) == 0)
		fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s",
			"-r		random data\n",
			"-c		character data\n",
			"-n		no final newline\n",
			"-b word		repeated word\n",
			"-w word		context word\n",
			"-s string	data separator\n",
			"-p precision	number of characters\n");
	exit(1);
}

getprec(s)
char	*s;
{
	register char	*p;
	register char	*q;

	for (p = s; *p; p++)
		if (*p == '.')
			break;
	if (!*p)
		return(0);
	for (q = ++p; *p; p++)
		if (!isdigit(*p))
			break;
	return(p - q);
}

getformat()
{
	register char	*p;

	if (boring)				/* no need to bother */
		return;
	for (p = format; *p; p++)		/* look for '%' */
		if (*p == '%' && *(p+1) != '%')	/* leave %% alone */
			break;
	if (!*p && !chardata)
		sprintf(p, "%%.%df", prec);
	else if (!*p && chardata) {
		strcpy(p, "%c");
		dox = 1;
	}
	else if (!*(p+1))
		strcat(format, "%");		/* cannot end in single '%' */
	else {
		while (!isalpha(*p))
			p++;
		switch (*p) {
		case 'f': case 'e': case 'g': case '%':
			break;
		case 's':
			error("Cannot convert numeric data to strings", "");
			break;
		/* case 'd': case 'o': case 'x': case 'D': case 'O': case 'X':
		case 'c': case 'u': */
		default:
			dox = 1;
			break;
		}
	}
}
Commit	Line	Data
176148fb SL	1	/* Copyright (c) 1983 Regents of the University of California */
	2
	3	#ifndef lint
e6b27609	4	static char sccsid[] = "@(#)jot.c 4.2 (Berkeley) %G%";
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)
2ab56523 JK	74	putchar('\n');
176148fb SL	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;
2ab56523 JK	92	case 'n':
	93	nofinalnl = 1;
	94	break;
176148fb SL	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)
2ab56523	281	fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s\t%s",
176148fb SL	282	"-r random data\n",
176148fb SL	283	"-c character data\n",
2ab56523	284	"-n no final newline\n",
176148fb SL	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	}