mirror of
https://github.com/LadybirdBrowser/ladybird.git
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46 lines
1.8 KiB
Bash
Executable file
46 lines
1.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -eo pipefail
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# How many bytes optipng has to be able to strip out of the file for the optimization to be worth it. The default is 1 KiB.
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: "${MINIMUM_OPTIMIZATION_BYTES:=1024}"
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script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
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cd "${script_path}/.."
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if ! command -v optipng >/dev/null ; then
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if [[ "$GITHUB_ACTIONS" == "true" ]]; then
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echo 'optipng is not installed, failing check because running in CI.'
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exit 1
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fi
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echo 'optipng is not installed, skipping png size check.'
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echo 'Please install optipng for your system to run this check.'
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exit 0
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fi
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files=()
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for file in "$@"; do
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if [[ "${file}" == *".png" ]]; then
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files+=("${file}")
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fi
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done
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if (( ${#files[@]} )); then
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# We need to allow optipng to write output so we can check what it actually did. We use a dummy file that's discarded afterwards.
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optimizations=$( printf '%s\0' "${files[@]}" |\
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xargs -0 -n1 optipng -strip all -out dummy-optipng-output.png -clobber 2>&1 |\
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grep -i -e 'Output IDAT size =' |\
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sed -E 's/Output IDAT size = [0-9]+ byte(s?) \(([0-9]+) byte(s?) decrease\)/\2/g;s/Output IDAT size = [0-9]+ byte(s?) \(no change\)/0/g' |\
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awk "{ if (\$1 >= $MINIMUM_OPTIMIZATION_BYTES) { S+=\$1 } } END { print S }")
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rm -f dummy-optipng-output.png dummy-optipng-output.png.bak
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optimizations="${optimizations:-0}"
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if [[ "$optimizations" -ne 0 ]] ; then
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echo "There are non-optimized PNG images in Base/. It is possible to reduce file sizes by at least $optimizations byte(s)."
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# shellcheck disable=SC2016 # we're not trying to expand expressions here
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echo 'Please run optipng with `-strip all` on modified PNG images and try again.'
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exit 1
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fi
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else
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echo 'No PNG images to check.'
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fi
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