181 lines
4.9 KiB
Perl
181 lines
4.9 KiB
Perl
#!/usr/bin/env perl
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# $XTermId: 256colors2.pl,v 1.16 2014/02/26 20:21:48 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 1999-2012,2014 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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# use the resources for colors 0-15 - usually more-or-less a
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# reproduction of the standard ANSI colors, but possibly more
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# pleasing 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_u);
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&getopts('8cdhqru') || die("Usage: $0 [options]");
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die("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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-u use UTF-8 when emitting 8-bit controls
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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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} 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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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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} 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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} 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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@steps=(0,95,135,175,215,255);
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# colors 16-231 are a 6x6x6 color cube
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printf("%s4", $osc) if ($opt_q);
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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 * $cube) + (map_cube($green) * $cube) + map_cube($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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# 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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