1#!/bin/sh 2############################################################################## 3# Copyright 2020 Thomas E. Dickey # 4# Copyright 2016 Free Software Foundation, Inc. # 5# # 6# Permission is hereby granted, free of charge, to any person obtaining a # 7# copy of this software and associated documentation files (the "Software"), # 8# to deal in the Software without restriction, including without limitation # 9# the rights to use, copy, modify, merge, publish, distribute, distribute # 10# with modifications, sublicense, and/or sell copies of the Software, and to # 11# permit persons to whom the Software is furnished to do so, subject to the # 12# following conditions: # 13# # 14# The above copyright notice and this permission notice shall be included in # 15# all copies or substantial portions of the Software. # 16# # 17# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # 18# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # 19# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # 20# THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # 21# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # 22# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER # 23# DEALINGS IN THE SOFTWARE. # 24# # 25# Except as contained in this notice, the name(s) of the above copyright # 26# holders shall not be used in advertising or otherwise to promote the sale, # 27# use or other dealings in this Software without prior written # 28# authorization. # 29############################################################################## 30# $Id: tput-colorcube,v 1.2 2020/02/02 23:34:34 tom Exp $ 31# Use this script to print an xterm-style color cube, e.g., as done in 32# the xterm 88colors2.pl and 256colors2.pl scripts. 33 34failed() { 35 printf "?? $*\n" >&2 36 exit 1 37} 38 39newline() { 40 tput op 41 printf "\n" 42} 43 44if [ $# = 1 ] 45then 46 myterm=$1 47elif [ $# = 0 ] 48then 49 myterm=$TERM 50else 51 failed "expected one parameter or none" 52fi 53 54colors=$(tput -T $myterm colors 2>/dev/null) 55if [ ${colors:-0} -le 0 ] 56then 57 myterm=${myterm%%-color} 58 colors=$(tput -T $myterm colors 2>/dev/null) 59fi 60if [ ${colors:-0} -le 0 ] 61then 62 failed "terminal $myterm does not support color" 63fi 64 65printf "System colors:\n" 66 67color=0 68inrow=$colors 69to_do=$colors 70[ $colors -gt 256 ] && colors=256 71[ $inrow -gt 8 ] && inrow=8 72[ $to_do -gt 16 ] && to_do=16 73while [ $color -lt $to_do ] 74do 75 [ $color = $inrow ] && newline 76 tput setab $color 77 printf ' ' 78 color=$(expr $color + 1) 79done 80newline 81 82[ $colors -le 16 ] && exit 83 84if [ $colors = 256 ] 85then 86 cube=6 87 ramp=232 88elif [ $colors -ge 88 ] 89then 90 cube=4 91 ramp=80 92else 93 exit 94fi 95 96printf "\n" 97printf "Color cube, ${cube}x${cube}x${cube}:\n" 98g=0 99cube2=$(expr $cube \* $cube) 100while [ $g -lt $cube ] 101do 102 r=0 103 while [ $r -lt $cube ] 104 do 105 b=0 106 while [ $b -lt $cube ] 107 do 108 color=$(expr 16 + \( $r \* $cube2 \) + \( $g \* $cube \) + $b) 109 tput setab $color 110 printf ' ' 111 b=$(expr $b + 1) 112 done 113 tput op 114 printf ' ' 115 r=$(expr $r + 1) 116 done 117 newline 118 g=$(expr $g + 1) 119done 120 121printf "\n" 122printf "Grayscale ramp:\n" 123color=$ramp 124while [ $color -lt $colors ] 125do 126 tput setab $color 127 printf ' ' 128 color=$(expr $color + 1) 129done 130newline 131# vi:ts=4 sw=4 132