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cut: error for unknown options #297

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Oct 20, 2023
Merged

cut: error for unknown options #297

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54 changes: 30 additions & 24 deletions bin/cut
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Original file line number Diff line number Diff line change
Expand Up @@ -23,14 +23,35 @@ License: perl

$^W = 1; # -w
use strict;
use Getopt::Std;
use File::Basename;

## What's my name?
use File::Basename qw(basename);
use Getopt::Std qw(getopts);

use constant EX_SUCCESS => 0;
use constant EX_FAILURE => 1;

my $me = basename($0);

## Grab options
getopts ('b:c:d:f:ns', \my %opt);
sub usage {
print <<EOT;
usage: $me -b list [-n] [file ...]
$me -c list [file ...]
$me -f list [-d delim] [-s] [file ...]

Each LIST is made up of one range, or many ranges separated by commas.
Each range is one of:

N Nth byte, character or field, counted from 1
N- from Nth byte, character or field, to end of line
N-M from Nth to Mth (included) byte, character or field
-M from first to Mth (included) byte, character or field

EOT
exit EX_FAILURE;
}

my %opt;
getopts('b:c:d:f:ns', \%opt) or usage();

# There's no difference between -b and -c on any unix I
# use regularly -- it's for i18n. Thus, -n is a noop, too.
Expand Down Expand Up @@ -64,7 +85,7 @@ if (defined ($opt{b})) {
}
print "\n";
}
exit 0;
exit EX_SUCCESS;
}

## Field operations
Expand Down Expand Up @@ -114,26 +135,11 @@ elsif (defined ($opt{f})) {
}
}

exit 0;
exit EX_SUCCESS;
}

## $SIG{__CLUE__}
print <<EOT;
usage: $me -b list [-n] [file ...]
$me -c list [file ...]
$me -f list [-d delim] [-s] [file ...]

Each LIST is made up of one range, or many ranges separated by commas.
Each range is one of:

N Nth byte, character or field, counted from 1
N- from Nth byte, character or field, to end of line
N-M from Nth to Mth (included) byte, character or field
-M from first to Mth (included) byte, character or field

EOT

exit 1;
warn "$me: byte, character or field list required\n";
usage();

# (Thanks to Abigail for the pod template.)

Expand Down