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