Created
March 27, 2023 15:08
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Just a simple algorithm for figuring out colors based on a string hash
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| #!/bin/bash | |
| # | |
| # Usage: ./run.bash $(sort --random-sort /usr/share/dict/words| head -n10 ) | tee /tmp/foo.html | |
| set -euo pipefail | |
| function string_to_color_hex { | |
| local -r string="$1" | |
| local -r hash=$(echo -n "$string" | md5sum | cut -d' ' -f1) | |
| local -ir r=$((16#${hash:0:2})) | |
| local -ir g=$((16#${hash:2:2})) | |
| local -ir b=$((16#${hash:4:2})) | |
| local -ir luma=$(printf "%0.0f" "$(bc -e "0.299 * $r + 0.587 * $g + 0.114 * $b")") | |
| local text_color | |
| if (( luma > 128 )); then | |
| text_color=black | |
| else | |
| text_color=white | |
| fi | |
| readonly text_color | |
| printf '<p style="color: %s; background-color: #%02x%02x%02x; text-align: center;">%s</p>\n' "$text_color" "$r" "$g" "$b" "$string" | |
| } | |
| echo '<html>' | |
| for string in "$@"; do | |
| string_to_color_hex "$string" | |
| done | |
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