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Diffstat (limited to 'src/usr.bin/jot/jot.c')
| -rw-r--r-- | src/usr.bin/jot/jot.c | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/src/usr.bin/jot/jot.c b/src/usr.bin/jot/jot.c new file mode 100644 index 0000000..23ba16b --- /dev/null +++ b/src/usr.bin/jot/jot.c @@ -0,0 +1,447 @@ +/* $OpenBSD: jot.c,v 1.23 2013/11/26 13:21:18 deraadt Exp $ */ +/* $NetBSD: jot.c,v 1.3 1994/12/02 20:29:43 pk Exp $ */ + +/*- + * 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. 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. + */ + +/* + * jot - print sequential or random data + * + * Author: John Kunze, Office of Comp. Affairs, UCB + */ + +#include <err.h> +#include <stdbool.h> +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#define REPS_DEF 100 +#define BEGIN_DEF 1 +#define ENDER_DEF 100 +#define STEP_DEF 1 + +#define is_default(s) (strcmp((s), "-") == 0) + +static double begin; +static double ender; +static double s; +static long reps; +static bool randomize; +static bool infinity; +static bool boring; +static int prec = -1; +static bool intdata; +static bool longdata; +static bool chardata; +static bool nosign; +static bool finalnl = true; +static char sepstring[BUFSIZ] = "\n"; +static char format[BUFSIZ]; + +static void getformat(void); +static int getprec(char *); +static int putdata(double, bool); +static void usage(void); + +int +main(int argc, char *argv[]) +{ + double x; + double y; + long i; + unsigned int mask = 0; + int n = 0; + int ch; + const char *errstr; + + while ((ch = getopt(argc, argv, "rb:w:cs:np:")) != -1) + switch (ch) { + case 'r': + randomize = true; + break; + case 'c': + chardata = true; + break; + case 'n': + finalnl = false; + break; + case 'b': + boring = true; + if (strlcpy(format, optarg, sizeof(format)) >= + sizeof(format)) + errx(1, "-b word too long"); + break; + case 'w': + if (strlcpy(format, optarg, sizeof(format)) >= + sizeof(format)) + errx(1, "-w word too long"); + break; + case 's': + if (strlcpy(sepstring, optarg, sizeof(sepstring)) >= + sizeof(sepstring)) + errx(1, "-s string too long"); + break; + case 'p': + prec = strtonum(optarg, 0, INT_MAX, &errstr); + if (errstr != NULL) + errx(1, "bad precision value, %s: %s", errstr, + 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 |= 01; + if (randomize) + warnx("random seeding not supported"); + } + case 3: + if (!is_default(argv[2])) { + if (!sscanf(argv[2], "%lf", &ender)) + ender = argv[2][strlen(argv[2])-1]; + mask |= 02; + if (prec == -1) + n = getprec(argv[2]); + } + case 2: + if (!is_default(argv[1])) { + if (!sscanf(argv[1], "%lf", &begin)) + begin = argv[1][strlen(argv[1])-1]; + mask |= 04; + if (prec == -1) + prec = getprec(argv[1]); + if (n > prec) /* maximum precision */ + prec = n; + } + case 1: + if (!is_default(argv[0])) { + if (!sscanf(argv[0], "%ld", &reps)) + errx(1, "Bad reps value: %s", argv[0]); + mask |= 010; + if (prec == -1) + prec = 0; + } + break; + case 0: + usage(); + break; + 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 001: + reps = REPS_DEF; + mask = 011; + break; + case 002: + reps = REPS_DEF; + mask = 012; + break; + case 003: + reps = REPS_DEF; + mask = 013; + break; + case 004: + reps = REPS_DEF; + mask = 014; + break; + case 005: + reps = REPS_DEF; + mask = 015; + break; + case 006: + reps = REPS_DEF; + mask = 016; + break; + 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) + errx(1, "Impossible stepsize"); + mask = 0; + break; + case 010: + begin = BEGIN_DEF; + mask = 014; + break; + case 011: + begin = BEGIN_DEF; + mask = 015; + break; + case 012: + s = STEP_DEF; + mask = 013; + break; + case 013: + 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 014: + s = STEP_DEF; + mask = 015; + break; + case 015: + if (randomize) + ender = ENDER_DEF; + else + ender = begin + reps * s - s; + mask = 0; + break; + case 016: + 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 017: /* 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) { + x = (ender - begin) * (ender > begin ? 1 : -1); + for (i = 1; i <= reps || infinity; i++) { + double v; + y = arc4random() / ((double)0xffffffff + 1); + v = y * x + begin; + if (putdata(v, reps == i && !infinity)) + errx(1, "range error in conversion: %f", v); + } + } + else + for (i = 1, x = begin; i <= reps || infinity; i++, x += s) + if (putdata(x, reps == i && !infinity)) + errx(1, "range error in conversion: %f", x); + if (finalnl) + putchar('\n'); + exit(0); +} + +static int +putdata(double x, bool last) +{ + if (boring) + printf("%s", format); + else if (longdata && nosign) { + if (x <= (double)ULONG_MAX && x >= 0.0) + 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 >= 0.0) + printf(format, (unsigned int)x); + else + return (1); + } else + printf(format, x); + if (!last) + fputs(sepstring, stdout); + + return (0); +} + +static void +usage(void) +{ + (void)fprintf(stderr, "usage: jot [-cnr] [-b word] [-p precision] " + "[-s string] [-w word]\n" + " [reps [begin [end [s]]]]\n"); + exit(1); +} + +static int +getprec(char *s) +{ + char *p; + char *q; + + for (p = s; *p != '\0'; p++) + if (*p == '.') + break; + if (*p == '\0') + return (0); + for (q = ++p; *p != '\0'; p++) + if (!isdigit((unsigned char)*p)) + break; + return (p - q); +} + +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 != '\0'; p++) /* look for '%' */ + if (*p == '%' && *(p+1) != '%') /* leave %% alone */ + break; + sz = sizeof(format) - strlen(format) - 1; + if (*p == '\0' && !chardata) { + int n; + + n = snprintf(p, sz, "%%.%df", prec); + if (n == -1 || n >= (int)sz) + errx(1, "-w word too long"); + } else if (*p == '\0' && chardata) { + if (strlcpy(p, "%c", sz) >= sz) + errx(1, "-w word too long"); + intdata = true; + } else if (*(p+1) == '\0') { + if (sz <= 0) + errx(1, "-w word too long"); + /* cannot end in single '%' */ + strlcat(format, "%", sizeof format); + } 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 != '\0') + if (*p == '%' && *(p+1) != '\0' && *(p+1) != '%') + errx(1, "too many conversions"); + else if (*p == '%' && *(p+1) == '%') + p++; + else if (*p == '%' && *(p+1) == '\0') { + strlcat(format, "%", sizeof format); + break; + } + } +} |