219 lines
6.3 KiB
Perl
219 lines
6.3 KiB
Perl
#!/usr/bin/env perl
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# $XTermId: 256colors2.pl,v 1.24 2018/08/10 15:03:34 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 1999-2016,2018 by Thomas E. Dickey
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# Copyright 2002 by Steve Wall
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# Copyright 1999 by Todd Larason
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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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#
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# If -s is not given, use the resources for colors 0-15 - usually more-or-less
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# a reproduction of the standard ANSI colors, but possibly more pleasing
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# shades.
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use strict;
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use warnings;
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use Getopt::Std;
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use Encode 'encode_utf8';
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our ( $opt_8, $opt_c, $opt_d, $opt_h, $opt_q, $opt_r, $opt_s, $opt_u );
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$Getopt::Std::STANDARD_HELP_VERSION = 1;
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&getopts('8cdhqrsu') || die("Usage: $0 [options]");
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die(
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"Usage: $0 [options]\n
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Options:
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-8 use 8-bit controls
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-c use colons for separating parameter values in SGR 38/48
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-d use rgb values rather than palette index
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-h display this message
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-q quieter output by merging all palette initialization
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-r display the reverse of the usual palette
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-s modify system colors, i.e., 0..15
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-u use UTF-8 when emitting 8-bit controls
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"
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) if ($opt_h);
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our $cube = 6;
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our (@steps);
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our ( $red, $green, $blue );
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our ( $gray, $level, $color );
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our ( $csi, $osc, $sep, $st );
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our @rgb;
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sub map_cube($) {
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my $value = $_[0];
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$value = ( 5 - $value ) if defined($opt_r);
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return $value;
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}
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sub map_gray($) {
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my $value = $_[0];
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$value = ( 23 - $value ) if defined($opt_r);
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return $value;
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}
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sub define_color($$$$) {
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my $index = $_[0];
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my $r = $_[1];
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my $g = $_[2];
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my $b = $_[3];
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printf( "%s4", $osc ) unless ($opt_q);
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printf( ";%d;rgb:%2.2x/%2.2x/%2.2x", $index, $r, $g, $b );
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printf( "%s", $st ) unless ($opt_q);
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$rgb[$index] = sprintf "%d%s%d%s%d", $r, $sep, $g, $sep, $b;
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}
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sub select_color($) {
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my $index = $_[0];
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if ( $opt_d and defined( $rgb[$index] ) ) {
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printf "%s48;2%s%sm ", $csi, $sep, $rgb[$index];
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}
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else {
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printf "%s48;5%s%sm ", $csi, $sep, $index;
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}
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}
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sub system_color($$$$) {
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my $color = shift;
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my $red = shift;
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my $green = shift;
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my $blue = shift;
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&define_color( 15 - $color, $red, $green, $blue ) if ($opt_r);
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&define_color( $color, $red, $green, $blue ) unless ($opt_r);
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}
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if ($opt_8) {
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$csi = "\x9b";
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$osc = "\x9d";
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$st = "\x9c";
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}
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else {
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$csi = "\x1b[";
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$osc = "\x1b]";
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$st = "\x1b\\";
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}
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if ($opt_c) {
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$sep = ":";
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}
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else {
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$sep = ";";
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}
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if ( $opt_8 and $opt_u ) {
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my $lc_ctype = `locale 2>/dev/null | fgrep LC_CTYPE | sed -e 's/^.*=//'`;
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if ( $lc_ctype =~ /utf.?8/i ) {
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binmode( STDOUT, ":utf8" );
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}
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}
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printf( "%s4", $osc ) if ($opt_q);
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if ($opt_s) {
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&system_color( 0, 0, 0, 0 );
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&system_color( 1, 205, 0, 0 );
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&system_color( 2, 0, 205, 0 );
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&system_color( 3, 205, 205, 0 );
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&system_color( 4, 0, 0, 238 );
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&system_color( 5, 205, 0, 205 );
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&system_color( 6, 0, 205, 205 );
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&system_color( 7, 229, 229, 229 );
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&system_color( 8, 127, 127, 127 );
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&system_color( 9, 255, 0, 0 );
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&system_color( 10, 0, 255, 0 );
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&system_color( 11, 255, 255, 0 );
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&system_color( 12, 92, 92, 255 );
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&system_color( 13, 255, 0, 255 );
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&system_color( 14, 0, 255, 255 );
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&system_color( 15, 255, 255, 255 );
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}
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# colors 16-231 are a 6x6x6 color cube
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@steps = ( 0, 95, 135, 175, 215, 255 );
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for ( $red = 0 ; $red < $cube ; $red++ ) {
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for ( $green = 0 ; $green < $cube ; $green++ ) {
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for ( $blue = 0 ; $blue < $cube ; $blue++ ) {
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&define_color(
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16 + ( map_cube($red) * $cube * $cube ) +
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( map_cube($green) * $cube ) +
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map_cube($blue),
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int( $steps[$red] ),
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int( $steps[$green] ),
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int( $steps[$blue] )
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);
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}
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}
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}
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# colors 232-255 are a grayscale ramp, intentionally leaving out
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# black and white
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for ( $gray = 0 ; $gray < 24 ; $gray++ ) {
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$level = ( map_gray($gray) * 10 ) + 8;
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&define_color( 232 + $gray, $level, $level, $level );
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}
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printf( "%s", $st ) if ($opt_q);
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# display the colors
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# first the system ones:
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print "System colors:\n";
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for ( $color = 0 ; $color < 8 ; $color++ ) {
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&select_color($color);
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}
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printf "%s0m\n", $csi;
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for ( $color = 8 ; $color < 16 ; $color++ ) {
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&select_color($color);
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}
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printf "%s0m\n\n", $csi;
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# now the color cube
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print "Color cube, ${cube}x${cube}x${cube}:\n";
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for ( $green = 0 ; $green < $cube ; $green++ ) {
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for ( $red = 0 ; $red < $cube ; $red++ ) {
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for ( $blue = 0 ; $blue < $cube ; $blue++ ) {
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$color = 16 + ( $red * $cube * $cube ) + ( $green * $cube ) + $blue;
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&select_color($color);
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}
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printf "%s0m ", $csi;
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}
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print "\n";
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}
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# now the grayscale ramp
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print "Grayscale ramp:\n";
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for ( $color = 232 ; $color < 256 ; $color++ ) {
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&select_color($color);
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}
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printf "%s0m\n", $csi;
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