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32 lines
964 B
Bash
32 lines
964 B
Bash
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#!/bin/bash -e
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# Only warn if decrease is more than 3%
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optimization_requirement=3
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git ls-files "*.png" | sort -u | (
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optimized=1
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temp_file=$(mktemp)
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echo "Optimizing png files:"
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while read file; do
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# Does only run a fuzzy check without -o7 -zm1-9 since it would be too slow otherwise
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decrease=($(optipng -nc -strip all -out "$temp_file" -clobber "$file" |& \
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sed -n 's/.*(\([0-9]\{1,\}\) bytes\? = \([0-9]\{1,\}\)\.[0-9]\{2\}% decrease).*/\1 \2/p'))
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if [[ -n "${decrease[*]}" ]]; then
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if [ "${decrease[1]}" -ge "$optimization_requirement" ]; then
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echo -en "\033[31m"
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optimized=0
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else
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echo -en "\033[32m"
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fi
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echo -e "Decrease: ${decrease[0]}B ${decrease[1]}%\033[0m $file"
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fi
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done
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rm "$temp_file"
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if [ "$optimized" -eq 0 ]; then
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echo -e "\033[1;31mWarning: Could optimized png file(s) by more than $optimization_requirement%.\033[0m" \
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"Apply 'optipng -o7 -zm1-9 -nc -strip all -clobber <filename>'"
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exit 1
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fi
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)
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