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#!/usr/bin/env perl
# $XTermId: utf8.pl,v 1.12 2022/07/08 18:32:43 tom Exp $
# -----------------------------------------------------------------------------
# this file is part of xterm
#
# Copyright 2012-2018,2022 by Thomas E. Dickey
#
# All Rights Reserved
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name(s) of the above copyright
# holders shall not be used in advertising or otherwise to promote the
# sale, use or other dealings in this Software without prior written
# authorization.
# -----------------------------------------------------------------------------
# display the given Unicode characters, given their hex or decimal values.
use warnings FATAL => "overflow";
no warnings "portable";
use strict;
use Encode 'encode_utf8';
use Text::CharWidth qw(mbswidth);
$| = 1;
sub num_bytes($) {
my $char = shift;
my $value = length( Encode::encode_utf8($char) );
my $result =
( $value <= 0
? "no bytes"
: ( $value > 1 ? sprintf( "%d bytes", $value ) : "1 bytes" ) );
return $result;
}
sub num_cells($) {
my $char = shift;
my $value = mbswidth($char);
my $result =
( $value <= 0
? "no cells"
: ( $value > 1 ? sprintf( "%d cells", $value ) : "1 cell" ) );
return $result;
}
sub pad_column($) {
my $char = shift;
my $value = mbswidth($char);
$value = 0 if ( $value < 0);
my $result = sprintf( "%.*s", 3 - $value, " ");
return $result;
}
sub vxt_utf8($) {
my $arg = $_[0];
my $hex = $arg;
my $dec = $arg;
if ( $arg =~ /^u\+[[:xdigit:]]+$/i ) {
$hex =~ s/^../0x/;
$dec = hex($hex);
}
elsif ( $arg =~ /^0x[[:xdigit:]]+$/i ) {
$dec = hex($hex);
}
elsif ( $arg =~ /^[[:xdigit:]]+$/i ) {
$dec = hex($hex);
}
else {
printf STDERR "? not a codepoint: $dec\n";
return;
}
my $chr = chr($dec);
my $type = (
$chr =~ /\p{isPrint}/
? (
$chr =~ /\p{isAlpha}/
? "alpha"
: (
$chr =~ /\p{isPunct}/
? "punct"
: (
$chr =~ /\p{isDigit}/
? "digit"
: "printing"
)
)
)
: (
$chr =~ /\p{isCntrl}/
? "cntrl"
: "nonprinting"
)
);
printf "%d ->%#x ->{%s}%s(%s %s %s)\n", $dec, $dec, $chr,
&pad_column($chr),
&num_bytes($chr),
&num_cells($chr),
$type;
}
binmode( STDOUT, ":utf8" );
while ( $#ARGV >= 0 ) {
vxt_utf8( shift @ARGV );
}
1;
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