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-rw-r--r--shell_cmds/jot/jot.c490
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diff --git a/shell_cmds/jot/jot.c b/shell_cmds/jot/jot.c
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+++ b/shell_cmds/jot/jot.c
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+/*-
+ * Copyright (c) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)jot.c 8.1 (Berkeley) 6/6/93";
+#endif
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/usr.bin/jot/jot.c,v 1.40 2009/12/13 03:14:06 delphij Exp $");
+
+/*
+ * jot - print sequential or random data
+ *
+ * Author: John Kunze, Office of Comp. Affairs, UCB
+ */
+
+#include <ctype.h>
+#include <err.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+/* Defaults */
+#define REPS_DEF 100
+#define BEGIN_DEF 1
+#define ENDER_DEF 100
+#define STEP_DEF 1
+
+/* Flags of options that have been set */
+#define HAVE_STEP 1
+#define HAVE_ENDER 2
+#define HAVE_BEGIN 4
+#define HAVE_REPS 8
+
+#define is_default(s) (*(s) == 0 || strcmp((s), "-") == 0)
+
+static bool boring;
+static int prec;
+static bool longdata;
+static bool intdata;
+static bool chardata;
+static bool nosign;
+static const char *sepstring = "\n";
+static char format[BUFSIZ];
+
+static void getformat(void);
+static int getprec(const char *);
+static int putdata(double, bool);
+static void usage(void);
+
+int
+main(int argc, char **argv)
+{
+ bool have_format = false;
+ bool infinity = false;
+ bool nofinalnl = false;
+ bool randomize = false;
+ bool use_random = false;
+ int ch;
+ int mask = 0;
+ int n = 0;
+ double begin = BEGIN_DEF;
+ double divisor;
+ double ender = ENDER_DEF;
+ double s = STEP_DEF;
+ double x, y;
+ long i;
+ long reps = REPS_DEF;
+
+ while ((ch = getopt(argc, argv, "b:cnp:rs:w:")) != -1)
+ switch (ch) {
+ case 'b':
+ boring = true;
+ /* FALLTHROUGH */
+ case 'w':
+ if (strlcpy(format, optarg, sizeof(format)) >=
+ sizeof(format))
+ errx(1, "-%c word too long", ch);
+ have_format = true;
+ break;
+ case 'c':
+ chardata = true;
+ break;
+ case 'n':
+ nofinalnl = true;
+ break;
+ case 'p':
+ prec = atoi(optarg);
+ if (prec <= 0)
+ errx(1, "bad precision value");
+ have_format = true;
+ break;
+ case 'r':
+ randomize = true;
+ break;
+ case 's':
+ sepstring = optarg;
+ break;
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ switch (argc) { /* examine args right to left, falling thru cases */
+ case 4:
+ if (!is_default(argv[3])) {
+ if (!sscanf(argv[3], "%lf", &s))
+ errx(1, "bad s value: %s", argv[3]);
+ mask |= HAVE_STEP;
+ if (randomize)
+ use_random = true;
+ }
+ /* FALLTHROUGH */
+ case 3:
+ if (!is_default(argv[2])) {
+ if (!sscanf(argv[2], "%lf", &ender))
+ ender = argv[2][strlen(argv[2])-1];
+ mask |= HAVE_ENDER;
+ if (!prec)
+ n = getprec(argv[2]);
+ }
+ /* FALLTHROUGH */
+ case 2:
+ if (!is_default(argv[1])) {
+ if (!sscanf(argv[1], "%lf", &begin))
+ begin = argv[1][strlen(argv[1])-1];
+ mask |= HAVE_BEGIN;
+ if (!prec)
+ prec = getprec(argv[1]);
+ if (n > prec) /* maximum precision */
+ prec = n;
+ }
+ /* FALLTHROUGH */
+ case 1:
+ if (!is_default(argv[0])) {
+ if (!sscanf(argv[0], "%ld", &reps))
+ errx(1, "bad reps value: %s", argv[0]);
+ mask |= HAVE_REPS;
+ }
+ break;
+ case 0:
+ usage();
+ default:
+ errx(1, "too many arguments. What do you mean by %s?",
+ argv[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 HAVE_STEP:
+ case HAVE_ENDER:
+ case HAVE_ENDER | HAVE_STEP:
+ case HAVE_BEGIN:
+ case HAVE_BEGIN | HAVE_STEP:
+ reps = REPS_DEF;
+ mask |= HAVE_REPS;
+ break;
+ case HAVE_BEGIN | HAVE_ENDER:
+ s = ender > begin ? 1 : -1;
+ mask |= HAVE_STEP;
+ break;
+ case HAVE_BEGIN | HAVE_ENDER | HAVE_STEP:
+ if (randomize)
+ reps = REPS_DEF;
+ else if (s == 0.0)
+ reps = 0;
+ else
+ reps = (ender - begin + s) / s;
+ if (reps <= 0)
+ errx(1, "impossible stepsize");
+ mask = 0;
+ break;
+ case HAVE_REPS:
+ case HAVE_REPS | HAVE_STEP:
+ begin = BEGIN_DEF;
+ mask |= HAVE_BEGIN;
+ break;
+ case HAVE_REPS | HAVE_ENDER:
+ s = STEP_DEF;
+ mask = HAVE_REPS | HAVE_ENDER | HAVE_STEP;
+ break;
+ case HAVE_REPS | HAVE_ENDER | HAVE_STEP:
+ if (randomize)
+ begin = BEGIN_DEF;
+ else if (reps == 0)
+ errx(1, "must specify begin if reps == 0");
+ begin = ender - reps * s + s;
+ mask = 0;
+ break;
+ case HAVE_REPS | HAVE_BEGIN:
+ s = STEP_DEF;
+ mask = HAVE_REPS | HAVE_BEGIN | HAVE_STEP;
+ break;
+ case HAVE_REPS | HAVE_BEGIN | HAVE_STEP:
+ if (randomize)
+ ender = ENDER_DEF;
+ else
+ ender = begin + reps * s - s;
+ mask = 0;
+ break;
+ case HAVE_REPS | HAVE_BEGIN | HAVE_ENDER:
+ if (reps == 0)
+ errx(1, "infinite sequences cannot be bounded");
+ else if (reps == 1)
+ s = 0.0;
+ else
+ s = (ender - begin) / (reps - 1);
+ mask = 0;
+ break;
+ case HAVE_REPS | HAVE_BEGIN | HAVE_ENDER | HAVE_STEP:
+ /* if reps given and implied, */
+ if (!randomize && s != 0.0) {
+ long t = (ender - begin + s) / s;
+ if (t <= 0)
+ errx(1, "impossible stepsize");
+ if (t < reps) /* take lesser */
+ reps = t;
+ }
+ mask = 0;
+ break;
+ default:
+ errx(1, "bad mask");
+ }
+ if (reps == 0)
+ infinity = true;
+ if (randomize) {
+ if (use_random) {
+ srandom((unsigned long)s);
+ divisor = (double)INT32_MAX + 1;
+ } else
+ divisor = (double)UINT32_MAX + 1;
+
+ /*
+ * Attempt to DWIM when the user has specified an
+ * integer range within that of the random number
+ * generator: distribute the numbers equally in
+ * the range [begin .. ender]. Jot's default %.0f
+ * format would make the appearance of the first and
+ * last specified value half as likely as the rest.
+ */
+ if (!have_format && prec == 0 &&
+ begin >= 0 && begin < divisor &&
+ ender >= 0 && ender < divisor) {
+ ender += 1;
+ nosign = true;
+ intdata = true;
+ (void)strlcpy(format,
+ chardata ? "%c" : "%u", sizeof(format));
+ }
+ x = (ender - begin) * (ender > begin ? 1 : -1);
+ for (i = 1; i <= reps || infinity; i++) {
+ if (use_random)
+ y = random() / divisor;
+ else
+ y = arc4random() / divisor;
+ if (putdata(y * x + begin, !(reps - i)))
+ errx(1, "range error in conversion");
+ }
+ } else
+ for (i = 1, x = begin; i <= reps || infinity; i++, x += s)
+ if (putdata(x, !(reps - i)))
+ errx(1, "range error in conversion");
+ if (!nofinalnl)
+ putchar('\n');
+ exit(0);
+}
+
+/*
+ * Send x to stdout using the specified format.
+ * Last is true if this is the set's last value.
+ * Return 0 if OK, or a positive number if the number passed was
+ * outside the range specified by the various flags.
+ */
+static int
+putdata(double x, bool last)
+{
+
+ if (boring)
+ printf("%s", format);
+ else if (longdata && nosign) {
+ if (x <= (double)ULONG_MAX && x >= (double)0)
+ printf(format, (unsigned long)x);
+ else
+ return (1);
+ } else if (longdata) {
+ if (x <= (double)LONG_MAX && x >= (double)LONG_MIN)
+ printf(format, (long)x);
+ else
+ return (1);
+ } else if (chardata || (intdata && !nosign)) {
+ if (x <= (double)INT_MAX && x >= (double)INT_MIN)
+ printf(format, (int)x);
+ else
+ return (1);
+ } else if (intdata) {
+ if (x <= (double)UINT_MAX && x >= (double)0)
+ printf(format, (unsigned int)x);
+ else
+ return (1);
+
+ } else
+ printf(format, x);
+ if (!last)
+ fputs(sepstring, stdout);
+
+ return (0);
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "%s\n%s\n",
+ "usage: jot [-cnr] [-b word] [-w word] [-s string] [-p precision]",
+ " [reps [begin [end [s]]]]");
+ exit(1);
+}
+
+/*
+ * Return the number of digits following the number's decimal point.
+ * Return 0 if no decimal point is found.
+ */
+static int
+getprec(const char *str)
+{
+ const char *p;
+ const char *q;
+
+ for (p = str; *p; p++)
+ if (*p == '.')
+ break;
+ if (!*p)
+ return (0);
+ for (q = ++p; *p; p++)
+ if (!isdigit((unsigned char)*p))
+ break;
+ return (p - q);
+}
+
+/*
+ * Set format, intdata, chardata, longdata, and nosign
+ * based on the command line arguments.
+ */
+static void
+getformat(void)
+{
+ char *p, *p2;
+ int dot, hash, space, sign, numbers = 0;
+ size_t sz;
+
+ if (boring) /* no need to bother */
+ return;
+ for (p = format; *p; p++) /* look for '%' */
+ if (*p == '%') {
+ if (p[1] == '%')
+ p++; /* leave %% alone */
+ else
+ break;
+ }
+ sz = sizeof(format) - strlen(format) - 1;
+ if (!*p && !chardata) {
+ if (snprintf(p, sz, "%%.%df", prec) >= (int)sz)
+ errx(1, "-w word too long");
+ } else if (!*p && chardata) {
+ if (strlcpy(p, "%c", sz) >= sz)
+ errx(1, "-w word too long");
+ intdata = true;
+ } else if (!*(p+1)) {
+ if (sz <= 0)
+ errx(1, "-w word too long");
+ strcat(format, "%"); /* cannot end in single '%' */
+ } else {
+ /*
+ * Allow conversion format specifiers of the form
+ * %[#][ ][{+,-}][0-9]*[.[0-9]*]? where ? must be one of
+ * [l]{d,i,o,u,x} or {f,e,g,E,G,d,o,x,D,O,U,X,c,u}
+ */
+ p2 = p++;
+ dot = hash = space = sign = numbers = 0;
+ while (!isalpha((unsigned char)*p)) {
+ if (isdigit((unsigned char)*p)) {
+ numbers++;
+ p++;
+ } else if ((*p == '#' && !(numbers|dot|sign|space|
+ hash++)) ||
+ (*p == ' ' && !(numbers|dot|space++)) ||
+ ((*p == '+' || *p == '-') && !(numbers|dot|sign++))
+ || (*p == '.' && !(dot++)))
+ p++;
+ else
+ goto fmt_broken;
+ }
+ if (*p == 'l') {
+ longdata = true;
+ if (*++p == 'l') {
+ if (p[1] != '\0')
+ p++;
+ goto fmt_broken;
+ }
+ }
+ switch (*p) {
+ case 'o': case 'u': case 'x': case 'X':
+ intdata = nosign = true;
+ break;
+ case 'd': case 'i':
+ intdata = true;
+ break;
+ case 'D':
+ if (!longdata) {
+ intdata = true;
+ break;
+ }
+ case 'O': case 'U':
+ if (!longdata) {
+ intdata = nosign = true;
+ break;
+ }
+ case 'c':
+ if (!(intdata | longdata)) {
+ chardata = true;
+ break;
+ }
+ case 'h': case 'n': case 'p': case 'q': case 's': case 'L':
+ case '$': case '*':
+ goto fmt_broken;
+ case 'f': case 'e': case 'g': case 'E': case 'G':
+ if (!longdata)
+ break;
+ /* FALLTHROUGH */
+ default:
+fmt_broken:
+ *++p = '\0';
+ errx(1, "illegal or unsupported format '%s'", p2);
+ /* NOTREACHED */
+ }
+ while (*++p)
+ if (*p == '%' && *(p+1) && *(p+1) != '%')
+ errx(1, "too many conversions");
+ else if (*p == '%' && *(p+1) == '%')
+ p++;
+ else if (*p == '%' && !*(p+1)) {
+ if (strlcat(format, "%", sizeof(format)) >=
+ sizeof(format))
+ errx(1, "-w word too long");
+ break;
+ }
+ }
+}
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