49 lines
1.4 KiB
Fish
49 lines
1.4 KiB
Fish
function latex-color --description "Get the LaTeX color from HEX code"
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# Declare our arguments
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argparse h/help -- $argv
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# Get function name
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set current_name $(status current-function)
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# Check if not enough arguments provided, or help menu
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if set -ql _flag_help || test -z $argv[1]
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echo -e "Usage: $current_name \"hexcode\""
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echo -e " $current_name [-h|--help] - Show this help message"
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return 0
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end
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# Remove '#'
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set hex $argv[1]
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if string match -qr '^#' -- $hex
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set hex (string sub -s 2 $hex)
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end
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# Check if the length of the hex is valid
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if not contains $(string length $hex) $(string split " " "3 4 6 8")
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echo "Error: Invalid HEX code"
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return 1
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end
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# Expand 3 hex to 4 hex
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if test (string length $hex) -eq 3
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set hex $(string join "" $hex 0)
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end
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# Expand 4 hex to 8 hex
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if test (string length $hex) -eq 4
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set hex "$(string replace -ar '(.)' '$1$1' $hex)00"
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end
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# Expand 6 hex to 8 hex
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if test (string length $hex) -eq 6
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set hex $(string join "" $hex 00)
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end
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# Convert hex to RGB
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set r (math "0x$(string sub -s 1 -l 2 $hex) / 255")
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set g (math "0x$(string sub -s 3 -l 2 $hex) / 255")
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set b (math "0x$(string sub -s 5 -l 2 $hex) / 255")
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set a (math "0x$(string sub -s 7 -l 2 $hex) / 255")
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printf "{%.2f, %.2f, %.2f, %.2f}\n" $r $g $b $a
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end
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