Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

2 files changed, 640 insertions, 0 deletions

diff --git a/shell_cmds/seq/seq.1 b/shell_cmds/seq/seq.1
new file mode 100644
index 0000000..4af7b99
--- /dev/null
+++ b/shell_cmds/seq/seq.1
@@ -0,0 +1,187 @@
+.\"	$NetBSD: seq.1,v 1.6 2008/11/26 15:03:47 ginsbach Exp $
+.\"
+.\" Copyright (c) 2005 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Brian Ginsbach.
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+.\"
+.\" $FreeBSD: src/usr.bin/seq/seq.1,v 1.1 2010/02/19 23:54:12 delphij Exp $
+.\"
+.Dd February 19, 2010
+.Dt SEQ 1
+.Os
+.Sh NAME
+.Nm seq
+.Nd print sequences of numbers
+.Sh SYNOPSIS
+.Nm
+.Op Fl w
+.Op Fl f Ar format
+.Op Fl s Ar string
+.Op Fl t Ar string
+.Op Ar first Op Ar incr
+.Ar last
+.Sh DESCRIPTION
+The
+.Nm
+utility prints a sequence of numbers, one per line
+.Pq default ,
+from
+.Ar first
+.Pq default 1 ,
+to near
+.Ar last
+as possible, in increments of
+.Ar incr
+.Pq default 1 .
+When
+.Ar first
+is larger than
+.Ar last
+the default
+.Ar incr
+is -1.
+.Pp
+All numbers are interpreted as floating point.
+.Pp
+Normally integer values are printed as decimal integers.
+.Pp
+The
+.Nm
+utility accepts the following options:
+.Bl -tag -width Ar
+.It Fl f Ar format
+Use a
+.Xr printf 3
+style
+.Ar format
+to print each number.
+Only the
+.Cm E ,
+.Cm e ,
+.Cm f ,
+.Cm G ,
+.Cm g ,
+and
+.Cm %
+conversion characters are valid, along with any optional
+flags and an optional numeric minimum field width or precision.
+The
+.Ar format
+can contain character escape sequences in backslash notation as
+defined in
+.St -ansiC .
+The default is
+.Cm %g .
+.It Fl s Ar string
+Use
+.Ar string
+to separate numbers.
+The
+.Ar string
+can contain character escape sequences in backslash notation as
+defined in
+.St -ansiC .
+The default is
+.Cm \en .
+.It Fl t Ar string
+Use
+.Ar string
+to terminate sequence of numbers.
+The
+.Ar string
+can contain character escape sequences in backslash notation as
+defined in
+.St -ansiC .
+This option is useful when the default separator
+does not contain a
+.Cm \en .
+.It Fl w
+Equalize the widths of all numbers by padding with zeros as necessary.
+This option has no effect with the
+.Fl f
+option.
+If any sequence numbers will be printed in exponential notation,
+the default conversion is changed to
+.Cm %e .
+.El
+.Pp
+The
+.Nm
+utility exits 0 on success and non-zero if an error occurs.
+.Sh EXAMPLES
+.Bd -literal -offset indent
+# seq 1 3
+1
+2
+3
+
+# seq 3 1
+3
+2
+1
+
+# seq -w 0 .05 .1
+0.00
+0.05
+0.10
+.Ed
+.Sh SEE ALSO
+.Xr jot 1 ,
+.Xr printf 1 ,
+.Xr printf 3
+.Sh HISTORY
+The
+.Nm
+command first appeared in
+.Tn "Plan 9 from Bell Labs" .
+A
+.Nm
+command appeared in
+.Nx 3.0 ,
+and ported to
+.Fx 9.0 .
+This command was based on the command of the same name in
+.Tn "Plan 9 from Bell Labs"
+and the
+.Tn GNU
+core utilities.
+The
+.Tn GNU
+.Nm
+command first appeared in the 1.13 shell utilities release.
+.Sh BUGS
+The
+.Fl w
+option does not handle the transition from pure floating point
+to exponent representation very well.
+The
+.Nm
+command is not bug for bug compatible with the
+.Tn "Plan 9 from Bell Labs"
+or
+.Tn GNU
+versions of
+.Nm .
diff --git a/shell_cmds/seq/seq.c b/shell_cmds/seq/seq.c
new file mode 100644
index 0000000..9c3623d
--- /dev/null
+++ b/shell_cmds/seq/seq.c
@@ -0,0 +1,453 @@
+/*	$NetBSD: seq.c,v 1.5 2008/07/21 14:19:26 lukem Exp $	*/
+/*
+ * Copyright (c) 2005 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Brian Ginsbach.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/usr.bin/seq/seq.c,v 1.2 2010/02/20 01:23:15 delphij Exp $");
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <math.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define ZERO	'0'
+#define SPACE	' '
+
+#define MAX(a, b)	(((a) < (b))? (b) : (a))
+#define ISSIGN(c)	((int)(c) == '-' || (int)(c) == '+')
+#define ISEXP(c)	((int)(c) == 'e' || (int)(c) == 'E')
+#define ISODIGIT(c)	((int)(c) >= '0' && (int)(c) <= '7')
+
+/* Globals */
+
+const char *decimal_point = ".";	/* default */
+char default_format[] = { "%g" };	/* default */
+
+/* Prototypes */
+
+double e_atof(const char *);
+
+int decimal_places(const char *);
+int main(int, char *[]);
+int numeric(const char *);
+int valid_format(const char *);
+
+char *generate_format(double, double, double, int, char);
+char *unescape(char *);
+
+/*
+ * The seq command will print out a numeric sequence from 1, the default,
+ * to a user specified upper limit by 1.  The lower bound and increment
+ * maybe indicated by the user on the command line.  The sequence can
+ * be either whole, the default, or decimal numbers.
+ */
+int
+main(int argc, char *argv[])
+{
+	int c = 0, errflg = 0;
+	int equalize = 0;
+	double first = 1.0;
+	double last = 0.0;
+	double incr = 0.0;
+	struct lconv *locale;
+	char *fmt = NULL;
+	const char *sep = "\n";
+	const char *term = NULL;
+	char pad = ZERO;
+
+	/* Determine the locale's decimal point. */
+	locale = localeconv();
+	if (locale && locale->decimal_point && locale->decimal_point[0] != '\0')
+		decimal_point = locale->decimal_point;
+
+	/*
+         * Process options, but handle negative numbers separately
+         * least they trip up getopt(3).
+         */
+	while ((optind < argc) && !numeric(argv[optind]) &&
+	    (c = getopt(argc, argv, "f:hs:t:w")) != -1) {
+
+		switch (c) {
+		case 'f':	/* format (plan9) */
+			fmt = optarg;
+			equalize = 0;
+			break;
+		case 's':	/* separator (GNU) */
+			sep = unescape(optarg);
+			break;
+		case 't':	/* terminator (new) */
+			term = unescape(optarg);
+			break;
+		case 'w':	/* equal width (plan9) */
+			if (!fmt)
+				if (equalize++)
+					pad = SPACE;
+			break;
+		case 'h':	/* help (GNU) */
+		default:
+			errflg++;
+			break;
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+	if (argc < 1 || argc > 3)
+		errflg++;
+
+	if (errflg) {
+		fprintf(stderr,
+		    "usage: %s [-w] [-f format] [-s string] [-t string] [first [incr]] last\n",
+		    getprogname());
+		exit(1);
+	}
+
+	last = e_atof(argv[argc - 1]);
+
+	if (argc > 1)
+		first = e_atof(argv[0]);
+	
+	if (argc > 2) {
+		incr = e_atof(argv[1]);
+		/* Plan 9/GNU don't do zero */
+		if (incr == 0.0)
+			errx(1, "zero %screment", (first < last)? "in" : "de");
+	}
+
+	/* default is one for Plan 9/GNU work alike */
+	if (incr == 0.0)
+		incr = (first < last) ? 1.0 : -1.0;
+
+	if (incr <= 0.0 && first < last)
+		errx(1, "needs positive increment");
+
+	if (incr >= 0.0 && first > last)
+		errx(1, "needs negative decrement");
+
+	if (fmt != NULL) {
+		if (!valid_format(fmt))
+			errx(1, "invalid format string: `%s'", fmt);
+		fmt = unescape(fmt);
+		/*
+	         * XXX to be bug for bug compatible with Plan 9 add a
+		 * newline if none found at the end of the format string.
+		 */
+	} else
+		fmt = generate_format(first, incr, last, equalize, pad);
+
+	if (incr > 0) {
+		for (; first <= last; first += incr) {
+			printf(fmt, first);
+			fputs(sep, stdout);
+		}
+	} else {
+		for (; first >= last; first += incr) {
+			printf(fmt, first);
+			fputs(sep, stdout);
+		}
+	}
+	if (term != NULL)
+		fputs(term, stdout);
+
+	return (0);
+}
+
+/*
+ * numeric - verify that string is numeric
+ */
+int
+numeric(const char *s)
+{
+	int seen_decimal_pt, decimal_pt_len;
+
+	/* skip any sign */
+	if (ISSIGN((unsigned char)*s))
+		s++;
+
+	seen_decimal_pt = 0;
+	decimal_pt_len = strlen(decimal_point);
+	while (*s) {
+		if (!isdigit((unsigned char)*s)) {
+			if (!seen_decimal_pt &&
+			    strncmp(s, decimal_point, decimal_pt_len) == 0) {
+				s += decimal_pt_len;
+				seen_decimal_pt = 1;
+				continue;
+			}
+			if (ISEXP((unsigned char)*s)) {
+				s++;
+				if (ISSIGN((unsigned char)*s) ||
+				    isdigit((unsigned char)*s)) {
+					s++;
+					continue;
+				}
+			}
+			break;
+		}
+		s++;
+	}
+	return (*s == '\0');
+}
+
+/*
+ * valid_format - validate user specified format string
+ */
+int
+valid_format(const char *fmt)
+{
+	int conversions = 0;
+
+	while (*fmt != '\0') {
+		/* scan for conversions */
+		if (*fmt != '\0' && *fmt != '%') {
+			do {
+				fmt++;
+			} while (*fmt != '\0' && *fmt != '%');
+		}
+		/* scan a conversion */
+		if (*fmt != '\0') {
+			do {
+				fmt++;
+
+				/* ok %% */
+				if (*fmt == '%') {
+					fmt++;
+					break;
+				}
+				/* valid conversions */
+				if (strchr("eEfgG", *fmt) &&
+				    conversions++ < 1) {
+					fmt++;
+					break;
+				}
+				/* flags, width and precsision */
+				if (isdigit((unsigned char)*fmt) ||
+				    strchr("+- 0#.", *fmt))
+					continue;
+
+				/* oops! bad conversion format! */
+				return (0);
+			} while (*fmt != '\0');
+		}
+	}
+
+	return (conversions <= 1);
+}
+
+/*
+ * unescape - handle C escapes in a string
+ */
+char *
+unescape(char *orig)
+{
+	char c, *cp, *new = orig;
+	int i;
+
+	for (cp = orig; (*orig = *cp); cp++, orig++) {
+		if (*cp != '\\')
+			continue;
+
+		switch (*++cp) {
+		case 'a':	/* alert (bell) */
+			*orig = '\a';
+			continue;
+		case 'b':	/* backspace */
+			*orig = '\b';
+			continue;
+		case 'e':	/* escape */
+			*orig = '\e';
+			continue;
+		case 'f':	/* formfeed */
+			*orig = '\f';
+			continue;
+		case 'n':	/* newline */
+			*orig = '\n';
+			continue;
+		case 'r':	/* carriage return */
+			*orig = '\r';
+			continue;
+		case 't':	/* horizontal tab */
+			*orig = '\t';
+			continue;
+		case 'v':	/* vertical tab */
+			*orig = '\v';
+			continue;
+		case '\\':	/* backslash */
+			*orig = '\\';
+			continue;
+		case '\'':	/* single quote */
+			*orig = '\'';
+			continue;
+		case '\"':	/* double quote */
+			*orig = '"';
+			continue;
+		case '0':
+		case '1':
+		case '2':
+		case '3':	/* octal */
+		case '4':
+		case '5':
+		case '6':
+		case '7':	/* number */
+			for (i = 0, c = 0;
+			     ISODIGIT((unsigned char)*cp) && i < 3;
+			     i++, cp++) {
+				c <<= 3;
+				c |= (*cp - '0');
+			}
+			*orig = c;
+			--cp;
+			continue;
+		case 'x':	/* hexidecimal number */
+			cp++;	/* skip 'x' */
+			for (i = 0, c = 0;
+			     isxdigit((unsigned char)*cp) && i < 2;
+			     i++, cp++) {
+				c <<= 4;
+				if (isdigit((unsigned char)*cp))
+					c |= (*cp - '0');
+				else
+					c |= ((toupper((unsigned char)*cp) -
+					    'A') + 10);
+			}
+			*orig = c;
+			--cp;
+			continue;
+		default:
+			--cp;
+			break;
+		}
+	}
+
+	return (new);
+}
+
+/*
+ * e_atof - convert an ASCII string to a double
+ *	exit if string is not a valid double, or if converted value would
+ *	cause overflow or underflow
+ */
+double
+e_atof(const char *num)
+{
+	char *endp;
+	double dbl;
+
+	errno = 0;
+	dbl = strtod(num, &endp);
+
+	if (errno == ERANGE)
+		/* under or overflow */
+		err(2, "%s", num);
+	else if (*endp != '\0')
+		/* "junk" left in number */
+		errx(2, "invalid floating point argument: %s", num);
+
+	/* zero shall have no sign */
+	if (dbl == -0.0)
+		dbl = 0;
+	return (dbl);
+}
+
+/*
+ * decimal_places - count decimal places in a number (string)
+ */
+int
+decimal_places(const char *number)
+{
+	int places = 0;
+	char *dp;
+
+	/* look for a decimal point */
+	if ((dp = strstr(number, decimal_point))) {
+		dp += strlen(decimal_point);
+
+		while (isdigit((unsigned char)*dp++))
+			places++;
+	}
+	return (places);
+}
+
+/*
+ * generate_format - create a format string
+ *
+ * XXX to be bug for bug compatable with Plan9 and GNU return "%g"
+ * when "%g" prints as "%e" (this way no width adjustments are made)
+ */
+char *
+generate_format(double first, double incr, double last, int equalize, char pad)
+{
+	static char buf[256];
+	char cc = '\0';
+	int precision, width1, width2, places;
+
+	if (equalize == 0)
+		return (default_format);
+
+	/* figure out "last" value printed */
+	if (first > last)
+		last = first - incr * floor((first - last) / incr);
+	else
+		last = first + incr * floor((last - first) / incr);
+
+	sprintf(buf, "%g", incr);
+	if (strchr(buf, 'e'))
+		cc = 'e';
+	precision = decimal_places(buf);
+
+	width1 = sprintf(buf, "%g", first);
+	if (strchr(buf, 'e'))
+		cc = 'e';
+	if ((places = decimal_places(buf)))
+		width1 -= (places + strlen(decimal_point));
+
+	precision = MAX(places, precision);
+
+	width2 = sprintf(buf, "%g", last);
+	if (strchr(buf, 'e'))
+		cc = 'e';
+	if ((places = decimal_places(buf)))
+		width2 -= (places + strlen(decimal_point));
+
+	if (precision) {
+		sprintf(buf, "%%%c%d.%d%c", pad,
+		    MAX(width1, width2) + (int) strlen(decimal_point) +
+		    precision, precision, (cc) ? cc : 'f');
+	} else {
+		sprintf(buf, "%%%c%d%c", pad, MAX(width1, width2),
+		    (cc) ? cc : 'g');
+	}
+
+	return (buf);
+}