173 lines
3.9 KiB
Bash
Executable file
173 lines
3.9 KiB
Bash
Executable file
#!/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
|
|
# TODO Lots of dupplicated code there
|
|
|
|
dir=${1:-$PWD}
|
|
total=$(mktemp)
|
|
echo -n 0 > $total
|
|
|
|
function showtotal {
|
|
echo "Total saved: $(cat "$total") bytes"
|
|
rm $total
|
|
exit
|
|
}
|
|
|
|
trap showtotal SIGTERM SIGINT SIGFPE
|
|
|
|
function doReplace { # candidate original
|
|
mv "$c" "$o"
|
|
saved=$(($os - $cs))
|
|
perc=$((100 * $saved / $os))
|
|
echo "→ $os ⇒ $cs (saved $saved bytes, or ${perc}%)"
|
|
newtotal=$(($(cat $total) + $saved))
|
|
echo -n $newtotal > $total
|
|
}
|
|
|
|
function replace { # 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
|
|
|
|
doReplace "$c" "$o"
|
|
}
|
|
|
|
function replaceImg { # candidate original
|
|
# With bitmap verification
|
|
|
|
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
|
|
doReplace "$c" "$o"
|
|
else
|
|
echo "→ Candidate don't have the same bit map as original, skipping!"
|
|
fi
|
|
rm -f "$ppmc" "$ppmo" "$c"
|
|
|
|
}
|
|
|
|
# JPEG (requires jpegtran)
|
|
while read image
|
|
do
|
|
if [ -z "$image" ]; then continue; fi
|
|
echo Processing $image
|
|
|
|
prog=$(mktemp --suffix .jpg)
|
|
jpegtran -copy all -progressive "$image" > "$prog"
|
|
echo "→ Progressive done"
|
|
progs=$(wc -c "$prog" | cut -d' ' -f1)
|
|
replace "$prog" "$image"
|
|
|
|
|
|
done <<< "$(find "$dir/" -type f -iregex ".+.jpe?g$")"
|
|
|
|
# PNG (requires optipng)
|
|
while read image
|
|
do
|
|
if [ -z "$image" ]; then continue; fi
|
|
echo Processing $image
|
|
|
|
temp=$(mktemp --suffix .png)
|
|
cp "$image" "$temp"
|
|
optipng -quiet "$temp"
|
|
echo "→ Optimize done"
|
|
|
|
replace "$temp" "$image"
|
|
|
|
done <<< "$(find "$dir/" -type f -iname "*.png")"
|
|
|
|
# # SVG (requires scour)
|
|
# while read image
|
|
# do
|
|
# if [ -z "$image" ]; then continue; fi
|
|
# echo Processing $image
|
|
#
|
|
# temp=$(mktemp --suffix .svg)
|
|
# scour --quiet "$image" "$temp" --no-line-breaks
|
|
# echo "→ Optimize done"
|
|
#
|
|
# replaceImg "$temp" "$image"
|
|
#
|
|
# done <<< "$(find "$dir/" -type f -iname "*.svg")"
|
|
|
|
# NOTE Explicitely disabled since:
|
|
# - I only have ~50 MiB of SVG in TOTAL
|
|
# - Most conversions are not image losseless
|
|
# - Even when they are losseless, they are mostly worthless
|
|
# - I might want to keep editor data and/or ids for some of them
|
|
# So rather use scour explicitely when needed
|
|
|
|
cleandev
|
|
|
|
showtotal
|