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create html-minify.sh

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Spirit 👾 2024-08-26 16:29:29 +03:00
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commit c64c078365
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#!/bin/bash
# Known issues:
# - if html line have two paths only one file considered
# - fails if js file has backticks
command -v html-minifier >/dev/null 2>&1 || { echo "Error: to install missing deps run: npm i -g html-minifier uglify-js cleancss svgo" >&2; exit 1; }
command -v uglifyjs >/dev/null 2>&1 || { echo "Error: to install missing deps run: npm i -g html-minifier uglify-js cleancss svgo" >&2; exit 1; }
command -v cleancss >/dev/null 2>&1 || { echo "Error: to install missing deps run: npm i -g html-minifier uglify-js cleancss svgo" >&2; exit 1; }
command -v svgo >/dev/null 2>&1 || { echo "Error: to install missing deps run: npm i -g html-minifier uglify-js cleancss svgo" >&2; exit 1; }
html_file=index.html
if [[ -f "$html_file" ]]; then
awk '
{
if (match($0, /<script src="([^"]+\.js)"><\/script>/)) {
file = substr($0, RSTART+13, RLENGTH-24)
print "´"file"´\n"substr($0, RSTART+24+length(file))
} else if (match($0, /<link rel="stylesheet" href="([^"]+\.css)">/)) {
file = substr($0, RSTART+29, RLENGTH-31)
print "´"file"´\n"substr($0, RSTART+31+length(file))
} else if (match($0, /<link rel="shortcut icon" type="image\/svg\+xml" href="([^"]+\.svg)">/)) {
file = substr($0, RSTART+53, RLENGTH-55)
print "´SVG:"file"´\n"substr($0, RSTART+55+length(file))
} else {
print $0
}
}
' "$html_file" > "${html_file}.tmp"
# Minify and replace content
while IFS= read -r line; do
if [[ $line =~ ´([^\"]+)´ ]]; then
file="${BASH_REMATCH[1]}"
echo processing "$file"
if [[ "$file" == SVG:* ]]; then
file="${file#SVG:}"
if [[ -f "$file" ]]; then
svgo "$file" -o "min.${file}"
svg_content=$(cat "min.${file}" | sed 's/</\%3C/g; s/>/\%3E/g; s/#/\%23/g; s/"/'"'"'/g')
sed -i "s|´SVG:${file}´|<link rel=\"shortcut icon\" type=\"image/svg+xml\" href=\"data:image/svg+xml,${svg_content}\">|" "${html_file}.tmp"
else
echo "Warning: SVG file $file not found."
fi
elif [[ -f "$file" ]]; then
if [[ "$file" == *.js ]]; then
start_tag='<script>'
end_tag='<\/script>'
uglifyjs $file -c -m > "min.${file}"
elif [[ "$file" == *.css ]]; then
start_tag='<style>'
end_tag='<\/style>'
cleancss $file > "min.${file}"
fi
escaped_content=$(sed 's/[&/\]/\\&/g' < "min.${file}")
sed -i "s/´${file}´/${start_tag}${escaped_content}${end_tag}/" "${html_file}.tmp"
else
echo "Warning: File $file not found."
fi
fi
done < "${html_file}.tmp"
html-minifier --collapse-whitespace --remove-comments --remove-optional-tags --remove-redundant-attributes --remove-script-type-attributes --remove-tag-whitespace --use-short-doctype --minify-css true --minify-js true "${html_file}.tmp" > "min.${html_file}"
echo generated "min.${html_file}"
fi
# Clean up generated files
rm min.*.js min.*.css min.*.svg "${html_file}.tmp"