#!/bin/bash # # Developed by Fred Weinhaus 10/1/2009 .......... revised 8/18/2015 # # ------------------------------------------------------------------------------ # # Licensing: # # Copyright © Fred Weinhaus # # My scripts are available free of charge for non-commercial use, ONLY. # # For use of my scripts in commercial (for-profit) environments or # non-free applications, please contact me (Fred Weinhaus) for # licensing arrangements. My email address is fmw at alink dot net. # # If you: 1) redistribute, 2) incorporate any of these scripts into other # free applications or 3) reprogram them in another scripting language, # then you must contact me for permission, especially if the result might # be used in a commercial or for-profit environment. # # My scripts are also subject, in a subordinate manner, to the ImageMagick # license, which can be found at: http://www.imagemagick.org/script/license.php # # ------------------------------------------------------------------------------ # #### # # USAGE: colorconverter -c "color" [-d dimensions] [-s] [-v] # USAGE: colorconverter [-h or -help] # # OPTIONS: # # -c color Any valid IM color specification # -d dimensions Dimensions of optional color swatch; WidthxHeight; # -s Show color swatch of specified color # -v Validate all converted colors by showing color swatches # ### # # NAME: COLORCONVERTER # # PURPOSE: To convert any valid ImageMagick color specification to the other # ImageMagick color representations. # # DESCRIPTION: COLORCONVERTER converts any valid ImageMagick color specification # to other ImageMagick color representations, including: RGB, HEX, HSL, HSB # and CMYK. The values will be listed to the Terminal. A color swatch for the # input color may be displayed. Also a swatch for each of the other color # representations may be displayed. # # # OPTIONS: # # # -c color ... COLOR is any valid IM color specification, including RGB, HEX, # HSL, HSB, CMYK or by name. If not a color name, the color specification # should be enclosed in quotes. # # -d dimensions ... DIMENSIONS specifies the WidthxHeight for the color # swatch(es). The default="150x150". # # -s ... Indicates to display a color swatch for the specified color. # # -v ... Indicates to display a color swatch for each converted color in # the various color representations. # # NOTE: Prior to IM 6.5.6-6, HSL colors may not produce correct swatches, as # changes and bugs were fixed starting with IM 6.5.6-4. Prior to IM 6.5.6-4, # HSL colors were specified only with hue in range 0-360 and saturation and # lightness as percentages. HSB color specification and swatches were only # first available and correct starting with IM 6.5.6-6. # # CAVEAT: No guarantee that this script will work on all platforms, # nor that trapping of inconsistent parameters is complete and # foolproof. Use At Your Own Risk. # ###### # # set default values color="" dimensions="150x150" show="no" validate="no" font="Arial" # set up functions to report Usage and Usage with Description PROGNAME=`type $0 | awk '{print $3}'` # search for executable on path PROGDIR=`dirname $PROGNAME` # extract directory of program PROGNAME=`basename $PROGNAME` # base name of program usage1() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^###/g; /^#/!q; s/^#//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } usage2() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^######/g; /^#/!q; s/^#*//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } # function to report error messages errMsg() { echo "" echo $1 echo "" usage1 exit 1 } # function to test for minus at start of value of second part of option 1 or 2 checkMinus() { test=`echo "$1" | grep -c '^-.*$'` # returns 1 if match; 0 otherwise [ $test -eq 1 ] && errMsg "$errorMsg" } # function to compute and show color swatch function showSwatch() { convert -respect-parenthesis \( -size "$dimensions" xc:"$1" \) -colorspace $cspace \ -background white -fill black -font $font -pointsize 10 \ label:"$1" -gravity south -append show: } # test for correct number of arguments and get values if [ $# -eq 0 ] then # help information echo "" usage2 exit 0 elif [ $# -gt 6 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -h|-help) # help information echo "" usage2 exit 0 ;; -c) # color shift # to get the next parameter - color # test if parameter starts with minus sign errorMsg="--- INVALID COLOR SPECIFICATION ---" checkMinus "$1" color="$1" ;; -d) # dimensions shift # to get the next parameter - color # test if parameter starts with minus sign errorMsg="--- INVALID DIMENSION SPECIFICATION ---" checkMinus "$1" dimensions="$1" test=`expr "$1" : '^[0-9][0-9]*x[0-9][0-9]*$'` [ $test -eq 0 ] && errMsg "--- DIMENSIONS=$dimensions ARE NOT VALID ---" ;; -s) # show show="yes" ;; -v) # validate validate="yes" ;; -) # STDIN, end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done fi # test if color supplied [ "$color" = "" ] && errMsg "--- A COLOR MUST BE SPECIFIED ---" # get im version im_version=`convert -list configure | \ sed '/^LIB_VERSION_NUMBER */!d; s//,/; s/,/,0/g; s/,0*\([0-9][0-9]\)/\1/g' | head -n 1` # prior to IM 6.5.6.6 HSL/HSB colors were different the_version="06050606" # colorspace RGB and sRGB swapped between 6.7.5.5 and 6.7.6.7 # though probably not resolved until the latter # then -colorspace gray changed to linear between 6.7.6.7 and 6.7.8.2 # then -separate converted to linear gray channels between 6.7.6.7 and 6.7.8.2, # though probably not resolved until the latter # so -colorspace HSL/HSB -separate and -colorspace gray became linear # but we need to use -set colorspace RGB before using them at appropriate times # so that results stay as in original script # The following was determined from various version tests using dualtonemap. # with IM 6.7.4.10, 6.7.6.10, 6.7.8.7 # Note: added $setcspace2 to handle case of -c if [ "$im_version" -lt "06070607" -o "$im_version" -gt "06070707" ]; then setcspace="-set colorspace RGB" else setcspace="" fi if [ "$im_version" -ge "06070606" ]; then cspace="sRGB" else cspace="RGB" fi # no need for setcspace for grayscale or channels after 6.8.5.4 if [ "$im_version" -gt "06080504" ]; then setcspace="" cspace="sRGB" fi echo "" echo "RGB:" # get rgb colors rgb=`convert xc:"$color" -colorspace $cspace txt:- | tail -n 1 | sed -n 's/ *//g; s/^.*[:][(]\(.*\)[)].*[\#].*$/\1/p'` # test if values are percent or raw test=$(echo "$rgb" | grep "%") [ "$test" = "" ] && rgb="$rgb" || rgb=`echo "$rgb" | sed 's/%//g'` RR=`echo "$rgb" | cut -d, -f1` GG=`echo "$rgb" | cut -d, -f2` BB=`echo "$rgb" | cut -d, -f3` AA=`echo "$rgb" | cut -d, -f4` if [ "$test" = "" ]; then RRV=`convert xc: -format "%[fx:round(255*$RR/quantumrange)]" info:` GGV=`convert xc: -format "%[fx:round(255*$GG/quantumrange)]" info:` BBV=`convert xc: -format "%[fx:round(255*$BB/quantumrange)]" info:` RRP=`convert xc: -format "%[fx:100*$RR/quantumrange]" info:` GGP=`convert xc: -format "%[fx:100*$GG/quantumrange]" info:` BBP=`convert xc: -format "%[fx:100*$BB/quantumrange]" info:` else RRV=`convert xc: -format "%[fx:round(255*$RR/100)]" info:` GGV=`convert xc: -format "%[fx:round(255*$GG/100)]" info:` BBV=`convert xc: -format "%[fx:round(255*$BB/100)]" info:` RRP=$RR GGP=$GG BBP=$BB fi # raw alpha value change from range 0-quantumrange to 0-1 at same time % introduced for other channels (IM 6.8.6.10 started %) # also at IM 6.9.2.1 all raw rgb values including alpha now back to range 0-quantumrange, unless hdri mode and then all percent if [ "$AA" != "" -a "$test" = "" ]; then AAV=`convert xc: -format "%[fx:$AA/quantumrange]" info:` else AAV=$AA fi #echo "$RR $GG $BB $AA; $RRV $GGV $BBV; $RRP $GGP $BBP; $AAV" if [ "$AA" = "" ]; then echo "rgb($RRV,$GGV,$BBV)" [ "$validate" = "yes" ] && showSwatch "rgb($RRV,$GGV,$BBV)" echo "rgb($RRP%,$GGP%,$BBP%)" [ "$validate" = "yes" ] && showSwatch "rgb($RRP%,$GGP%,$BBP%)" else echo "rgba($RRV,$GGV,$BBV,$AAV)" [ "$validate" = "yes" ] && showSwatch "rgba($RRV,$GGV,$BBV,$AAV)" echo "rgba($RRP%,$GGP%,$BBP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "rgba($RRP%,$GGP%,$BBP%,$AAV)" fi echo "" echo "HEX:" # get hex colors hex=`convert xc:"$color" -colorspace $cspace txt:- | tail -n 1 | sed -n 's/^.*\([\#][0-9,A-F,a-f]*\) *.*$/\1/p'` echo "$hex" [ "$validate" = "yes" ] && showSwatch "$hex" echo "" echo "HSL:" # get hsl colors # due to change of channels to linear from non-linar, one needs to # convert cmyk colors to sRGB, then make non-linear with -set colorspace RGB, # then convert to HSL # # note: starting at IM 6.9.2.1 HSL txt output is in format HSL(0-360,percent,percent) and raw values are all non-percent again # also at IM 6.9.2.1 all raw hsl values including alpha now back to range 0-quantumrange # hsl=`convert xc:"$color" -colorspace $cspace $setcspace -colorspace HSL txt:- | tail -n 1 | sed -n 's/ *//g; s/^.*[:][(]\(.*\)[)].*[\#].*$/\1/p'` # test if values are percent or raw test=$(echo "$hsl" | grep "%") [ "$test" = "" ] && hsl="$hsl" || hsl=`echo "$hsl" | sed 's/%//g'` HH=`echo "$hsl" | cut -d, -f1` SS=`echo "$hsl" | cut -d, -f2` LL=`echo "$hsl" | cut -d, -f3` AA=`echo "$hsl" | cut -d, -f4` if [ "$test" = "" ]; then HHV=`convert xc: -format "%[fx:round(360*$HH/quantumrange)]" info:` SSV=`convert xc: -format "%[fx:round(255*$SS/quantumrange)]" info:` LLV=`convert xc: -format "%[fx:round(255*$LL/quantumrange)]" info:` SSP=`convert xc: -format "%[fx:100*$SS/quantumrange]" info:` LLP=`convert xc: -format "%[fx:100*$LL/quantumrange]" info:` else HHV=`convert xc: -format "%[fx:round(360*$HH/100)]" info:` SSV=`convert xc: -format "%[fx:round(255*$SS/100)]" info:` LLV=`convert xc: -format "%[fx:round(255*$LL/100)]" info:` HHP=$HH SSP=$SS LLP=$LL fi # raw alpha value change from range 0-quantumrange to 0-1 at same time % introduced for other channels (IM 6.8.6.10 started %) # also at IM 6.9.2.1 all raw hsb values including alpha now back to range 0-quantumrange if [ "$AA" != "" -a "$test" = "" ]; then AAV=`convert xc: -format "%[fx:$AA/quantumrange]" info:` else AAV=$AA fi #echo "$HH $SS $LL $AA; $HHV $SSV $LLV; $HHP $SSP $LLP; $AAV" if [ "$AA" = "" ]; then if [ "$im_version" -ge "$the_version" ] then echo "hsl($HHV,$SSV,$LLV)" [ "$validate" = "yes" ] && showSwatch "hsl($HHV,$SSV,$LLV)" if [ "$im_version" -lt "06090201" ]; then echo "hsl($HHP%,$SSP%,$LLP%)" [ "$validate" = "yes" ] && showSwatch "hsl($HHP%,$SSP%,$LLP%)" elif [ "$im_version" -ge "06090201" ]; then echo "hsl($HHV,$SSP%,$LLP%)" [ "$validate" = "yes" ] && showSwatch "hsl($HHV,$SSP%,$LLP%)" fi else echo "hsl($HHV,$SSP%,$LLP%)" [ "$validate" = "yes" ] && showSwatch "hsl($HHV,$SSP%,$LLP%)" fi else if [ "$im_version" -ge "$the_version" ] then echo "hsla($HHV,$SSV,$LLV,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsla($HHV,$SSV,$LLV,$AAV)" if [ "$im_version" -lt "06090201" ]; then echo "hsla($HHP%,$SSP%,$LLP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsla($HHP%,$SSP%,$LLP%,$AAV)" elif [ "$im_version" -ge "06090201" ]; then echo "hsla($HHV,$SSP%,$LLP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsla($HHV,$SSP%,$LLP%,$AAV)" fi else echo "hsla($HHV,$SSP%,$LLP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsla($HHV,$SSP%,$LLP%,$AAV)" fi fi echo "" echo "HSB:" # get hsb colors # due to change of channels to linear from non-linar, one needs to # convert cmyk colors to sRGB, then make non-linear with -set colorspace RGB, # then convert to HSL hsb=`convert xc:"$color" -colorspace $cspace $setcspace -colorspace HSB txt:- | tail -n 1 | sed -n 's/ *//g; s/^.*[:][(]\(.*\)[)].*[\#].*$/\1/p'` # test if values are percent or raw test=$(echo "$hsb" | grep "%") [ "$test" = "" ] && hsb="$hsb" || hsb=`echo "$hsb" | sed 's/%//g'` HH=`echo "$hsb" | cut -d, -f1` SS=`echo "$hsb" | cut -d, -f2` BB=`echo "$hsb" | cut -d, -f3` AA=`echo "$hsb" | cut -d, -f4` if [ "$test" = "" ]; then HHV=`convert xc: -format "%[fx:round(360*$HH/quantumrange)]" info:` SSV=`convert xc: -format "%[fx:round(255*$SS/quantumrange)]" info:` BBV=`convert xc: -format "%[fx:round(255*$BB/quantumrange)]" info:` HHP=`convert xc: -format "%[fx:100*$HH/quantumrange]" info:` SSP=`convert xc: -format "%[fx:100*$SS/quantumrange]" info:` BBP=`convert xc: -format "%[fx:100*$BB/quantumrange]" info:` else HHV=`convert xc: -format "%[fx:round(360*$HH/100)]" info:` SSV=`convert xc: -format "%[fx:round(255*$SS/100)]" info:` BBV=`convert xc: -format "%[fx:round(255*$BB/100)]" info:` HHP=$HH SSP=$SS BBP=$BB fi # raw alpha value change from range 0-quantumrange to 0-1 at same time % introduced for other channels (IM 6.8.6.10 started %) # also at IM 6.9.2.1 all raw values including alpha now back to range 0-quantumrange if [ "$AA" != "" -a "$test" = "" ]; then AAV=`convert xc: -format "%[fx:$AA/quantumrange]" info:` else AAV=$AA fi #echo "$HH $SS $BB $AA; $HHV $SSV $BBV; $HHP $SSP $BBP; $AAV" if [ "$AA" = "" ]; then if [ "$im_version" -ge "$the_version" ] then echo "hsb($HHV,$SSV,$BBV)" [ "$validate" = "yes" ] && showSwatch "hsb($HHV,$SSV,$BBV)" if [ "$im_version" -lt "06090201" ]; then echo "hsb($HHP%,$SSP%,$BBP%)" [ "$validate" = "yes" ] && showSwatch "hsb($HHP%,$SSP%,$BBP%)" elif [ "$im_version" -ge "06090201" ]; then echo "hsb($HHV,$SSP%,$BBP%)" [ "$validate" = "yes" ] && showSwatch "hsb($HHV,$SSP%,$BBP%)" fi else echo "hsb($HHV,$SSP%,$BBP%)" [ "$validate" = "yes" ] && showSwatch "hsb($HHV,$SSP%,$BBP%)" fi else if [ "$im_version" -ge "$the_version" ] then echo "hsba($HHV,$SSV,$BBV,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsba($HHV,$SSV,$BBV,$AAV)" if [ "$im_version" -lt "06090201" ]; then echo "hsba($HHP%,$SSP%,$BBP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsba($HHP%,$SSP%,$BBP%,$AAV)" elif [ "$im_version" -ge "06090201" ]; then echo "hsba($HHV,$SSP%,$BBP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsba($HHV,$SSP%,$BBP%,$AAV)" fi else echo "hsba($HHV,$SSP%,$BBP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "hsba($HHV,$SSP%,$BBP%,$AAV)" fi fi echo "" echo "CMYK:" # get cmyk colors cmyk=`convert xc:"$color" -colorspace CMYK txt:- | tail -n 1 | sed -n 's/ *//g; s/^.*[:][(]\(.*\)[)].*[\#].*$/\1/p'` # test if values are percent or raw test=$(echo "$cmyk" | grep "%") [ "$test" = "" ] && cmyk="$cmyk" || cmyk=`echo "$cmyk" | sed 's/%//g'` CC=`echo "$cmyk" | cut -d, -f1` MM=`echo "$cmyk" | cut -d, -f2` YY=`echo "$cmyk" | cut -d, -f3` KK=`echo "$cmyk" | cut -d, -f4` AA=`echo "$cmyk" | cut -d, -f5` if [ "$test" = "" ]; then CCV=`convert xc: -format "%[fx:round(255*$CC/quantumrange)]" info:` MMV=`convert xc: -format "%[fx:round(255*$MM/quantumrange)]" info:` YYV=`convert xc: -format "%[fx:round(255*$YY/quantumrange)]" info:` KKV=`convert xc: -format "%[fx:round(255*$KK/quantumrange)]" info:` CCP=`convert xc: -format "%[fx:100*$CC/quantumrange]" info:` MMP=`convert xc: -format "%[fx:100*$MM/quantumrange]" info:` YYP=`convert xc: -format "%[fx:100*$YY/quantumrange]" info:` KKP=`convert xc: -format "%[fx:100*$KK/quantumrange]" info:` else CCV=`convert xc: -format "%[fx:round(255*$CC/100)]" info:` MMV=`convert xc: -format "%[fx:round(255*$MM/100)]" info:` YYV=`convert xc: -format "%[fx:round(255*$YY/100)]" info:` KKV=`convert xc: -format "%[fx:round(255*$KK/100)]" info:` CCP=$CC MMP=$MM YYP=$YY KKP=$KK fi # raw alpha value change from range 0-quantumrange to 0-1 at same time % introduced for other channels (IM 6.8.6.10 started %) # also at IM 6.9.2.1 all raw cmyk values including alpha now back to range 0-quantumrange, unless hdri mode and then all percent if [ "$AA" != "" -a "$test" = "" ]; then AAV=`convert xc: -format "%[fx:$AA/quantumrange]" info:` else AAV=$AA fi #echo "$CC $MM $YY $KK $AA; $CCV $YYV $YYV $KKV; $CCP $MMP $YYP $KKP; $AAV" if [ "$AA" = "" ]; then echo "cmyk($CCV,$MMV,$YYV,$KKV)" [ "$validate" = "yes" ] && showSwatch "cmyk($CCV,$MMV,$YYV,$KKV)" echo "cmyk($CCP%,$MMP%,$YYP%,$KKP%)" [ "$validate" = "yes" ] && showSwatch "cmyk($CCP%,$MMP%,$YYP%,$KKP%)" else echo "cmyka($CCV,$MMV,$YYV,$KKV,$AAV)" [ "$validate" = "yes" ] && showSwatch "cmyka($CCV,$MMV,$YYV,$KKV,$AAV)" echo "cmyka($CCP%,$MMP%,$YYP%,$KKP%,$AAV)" [ "$validate" = "yes" ] && showSwatch "cmyka($CCP%,$MMP%,$YYP%,$KKP%,$AAV)" fi echo "" if [ "$show" = "yes" ]; then showSwatch "$color" fi exit 0