configs/arch-config/scripts/pieces/manga-double-split.sh

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#!/usr/bin/env bash
set -euo pipefail
shopt -s extglob
if [ $# -ne 1 ]; then
echo "Please use this script with a \"PATH\" to a folder your manga images"
$(exit 1); echo "$?"
fi
dir=$1
cd "$dir"
out="$(basename "$dir")-cropped"
# create a new directory to put our final cropped images
mkdir -p "../$out"
readarray -d '' images < <(find . -name "*\.jpeg" -print0)
for image in "${images[@]}"; do
# strip ./ from images and output current working on
echo "Working on ${image#./}"
noext="${image%.*}"
ratio=$(identify -format "%[fx:w/h]" "$image")> /dev/null
# get the image number
num=$(echo "$noext" | grep -Eoe [0-9]{3})
# strip leading 0s
num="${num##+(0)}"
[[ -z "${num}" ]] && num=0
if (( $(echo "$ratio > 1" |bc -l) )); then
# crop image in half
convert -crop 50%x100% "$image" "../$out/$noext-%d.jpeg"
# rename the -1, which is the first page to the original name
mv "../$out/$noext-1.jpeg" "../$out/page${num}.jpeg"
# increment image number
((num++))
# rename -0 to original image + 1 name
mv "../$out/$noext-0.jpeg" "../$out/page${num}.jpeg"
else
# move all other images
mv "$image" "../$out/page${num}.jpeg"
fi
done