[src/trunk]: src/usr.bin/seq seq(1) - print sequences of numbers

To: source-changes-hg%NetBSD.org@localhost
Subject: [src/trunk]: src/usr.bin/seq seq(1) - print sequences of numbers
From: ginsbach <ginsbach%NetBSD.org@localhost>
Date: Fri, 24 Jan 2020 16:15:56 +0000
details:   https://anonhg.NetBSD.org/src/rev/48c0e189f727
branches:  trunk
changeset: 573118:48c0e189f727
user:      ginsbach <ginsbach%NetBSD.org@localhost>
date:      Thu Jan 20 04:13:42 2005 +0000

description:
seq(1) - print sequences of numbers

diffstat:

 usr.bin/seq/Makefile |    7 +
 usr.bin/seq/seq.1    |  190 +++++++++++++++++++++
 usr.bin/seq/seq.c    |  460 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 657 insertions(+), 0 deletions(-)

diffs (truncated from 669 to 300 lines):

diff -r a94fd019ec56 -r 48c0e189f727 usr.bin/seq/Makefile
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/usr.bin/seq/Makefile      Thu Jan 20 04:13:42 2005 +0000
@@ -0,0 +1,7 @@
+#       $NetBSD: Makefile,v 1.1 2005/01/20 04:13:42 ginsbach Exp $
+
+WARNS= 3
+PROG=   seq
+LDADD+= -lm
+
+.include <bsd.prog.mk>
diff -r a94fd019ec56 -r 48c0e189f727 usr.bin/seq/seq.1
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/usr.bin/seq/seq.1 Thu Jan 20 04:13:42 2005 +0000
@@ -0,0 +1,190 @@
+.\"
+.\"
+.\" Copyright (c) 2005 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" 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.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgment:
+.\"     This product includes software developed by The NetBSD
+.\"     Foundation, Inc. and its contributors.
+.\" 4. Neither the name of The NetBSD Foundation 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 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.
+.\"
+.\"
+.Dd January 17, 2005
+.Dt SEQ 1
+.Os
+.Sh NAME
+.Nm seq
+.Nd print sequences of numbers
+.Sh SYNOPSIS
+.Nm
+.Op Fl f Ar format
+.Op Fl s Ar string
+.Op Fl t Ar string
+.Op Fl w
+.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 mimimum 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 .
+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 -r a94fd019ec56 -r 48c0e189f727 usr.bin/seq/seq.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/usr.bin/seq/seq.c Thu Jan 20 04:13:42 2005 +0000
@@ -0,0 +1,460 @@
+/*
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgment:
+ *      This product includes software developed by the NetBSD
+ *      Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 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>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 2005\n\
+       The NetBSD Foundation, Inc.  All rights reserved.\n");
+__RCSID("$NetBSD: seq.c,v 1.1 2005/01/20 04:13:42 ginsbach Exp $");
+#endif /* not lint */
+
+#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;
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