46 lines
1.1 KiB
Bash
Executable File
46 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env cached-nix-shell
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#!nix-shell -i zsh -p imagemagick unzip zip zsh
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set -e
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size="1440x1920" # Kobo Forma
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#size="768x1024" # Amazon Kindle Paperwhite
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vertical_size="$(cut -dx -f2 <<< $size)x$(cut -dx -f1 <<< $size)"
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infile="$(realpath $1)"
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outfile="$(realpath $2)"
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tmpdir=$(mktemp -d)
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function cleanup {
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rm -rf "$tmpdir"
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}
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trap cleanup EXIT INT SIGTERM
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cd "$tmpdir"
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unzip "$infile"
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# rename files to have a plain 4 digit filename
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i=1
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for file in **/*.???; do
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mv -n "$file" "$(dirname $file)/$(printf %04d $i).${file##*.}"
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i=$((i+1))
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done
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length=$(ls -1 **/*.??? | wc -l)
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position=0
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for image in **/*.???; do
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width=$(identify -format "%W" "$image")
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height=$(identify -format "%H" "$image")
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if (($width > $height)); then
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mogrify -resize "$vertical_size" -rotate 270 "$image"
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else
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mogrify -resize "$size" "$image"
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fi
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position=$(($position + 1))
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echo -ne "$(printf '%3s' $((100 * $position / $length))) % "$(printf "%0*d" "$((72 * $position / $length))" 0 | tr '0' '#')'\r'
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done
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echo
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zip "$outfile" **/*.???
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cd -
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