Public part of my dotfiles.
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#!/usr/bin/env bash
# Optimizes everything the script can find in a folder,
# meaning it will compress files as much as possible,
# without losing any data (verification will be done
# in order to verify that no data has been done)
# (executable)
# TODO Run in parallel
dir=${1:-$PWD}
total=$(mktemp)
echo -n 0 > $total
function showtotal {
echo "Total saved: $(cat "$total") bytes"
rm $total
exit
}
trap showtotal SIGTERM SIGINT SIGFPE
function replaceImg { # candidate original
c="$1"
o="$2"
# File verifications
if [ ! -f "$o" ]; then
echo "→ Original is inexistant, skipping!"
return
fi
if [ ! -f "$c" ]; then
echo "→ Candidate is inexistant, skipping!"
return
fi
# Size verifications
cs=$(wc -c "$c" | cut -d' ' -f1)
os=$(wc -c "$o" | cut -d' ' -f1)
if [ $cs -le 0 ]; then
echo "→ Candidate is empty, skipping!"
rm "$c"
return
fi
if [ $cs -eq $os ]; then
echo "→ Candidate weight the same, skipping."
rm "$c"
return
fi
if [ $cs -gt $os ]; then
echo "→ Candidate is larger, skipping."
rm "$c"
return
fi
# Bitmap verification
ppmc="$(mktemp --suffix .ppm)"
ppmo="$(mktemp --suffix .ppm)"
convert "$c" "$ppmc"
convert "$o" "$ppmo"
if cmp --silent "$ppmo" "$ppmc"; then
mv "$c" "$o"
saved=$(($os - $cs))
echo "$os$cs (saved $saved bytes)"
newtotal=$(($(cat $total) + $saved))
echo -n $newtotal > $total
else
echo "→ Candidate don't have the same bit map as original, skipping!"
fi
rm "$ppmc" "$ppmo" "$c"
}
# JPEG (requires jpegtran)
while read image
do
echo Processing $image
prog=$(mktemp --suffix .jpg)
jpegtran -copy all -progressive "$image" > "$prog"
echo "→ Progressive done"
optz=$(mktemp --suffix .jpg)
jpegtran -copy all -optimize "$image" > "$optz"
echo "→ Optimize done"
progs=$(wc -c "$prog" | cut -d' ' -f1)
optzs=$(wc -c "$optz" | cut -d' ' -f1)
if [[ $progs -le $optzs ]]; then
echo "→ Using progressive"
replaceImg "$prog" "$image"
rm "$optz"
else
echo "→ Using optimized"
replaceImg "$optz" "$image"
rm "$prog"
fi
done <<< "$(find "$dir" -type f -iregex ".+.jpe?g$")"
# PNG (requires optipng)
while read image
do
echo Processing $image
temp=$(mktemp --suffix .png)
cp "$image" "$temp"
optipng -o7 -quiet "$temp"
echo "→ Optimize done"
replaceImg "$temp" "$image"
done <<< "$(find "$dir" -type f -iname "*.png")"
# SVG (requires svgo)
while read image
do
echo Processing $image
temp=$(mktemp --suffix .svg)
cp "$image" "$temp"
svgo --quiet --config $HOME/.scripts/svgo.yml "$temp"
echo "→ Optimize done"
replaceImg "$temp" "$image"
done <<< "$(find "$dir" -type f -iname "*.svg")"
# GIT (requires git)
find "$dir" -type d -name .git -print0 | while IFS= read -r -d '' dir; do
(cd "$dir"; git gc)
done
showtotal