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compressor.sh
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compressor.sh
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#!/bin/sh
# path: /home/klassiker/.local/share/repos/shell/compressor.sh
# author: klassiker [mrdotx]
# github: https://github.com/mrdotx/shell
# date: 2024-04-24T20:50:12+0200
check() {
tools="7z bzip2 ghostscript gzip lzip lzma lzop tar unzip xz zstd"
printf "\n"
for tool in $tools; do
if command -v "$tool" > /dev/null 2>&1; then
printf " [ ] %s\n" "$tool"
else
printf " [X] %s\n" "$tool"
fi
done
}
script=$(basename "$0")
help="$script [-h/--help] -- script to extract/compress/list files and folders
Usage:
$script [--add/--list/--pdf] <quality> <file>.<ext> [file1.ext] [file2.ext]
Settings:
[--add] = compress files and folders to archive
[--list] = list archive files and folders
<ext> = compression extensions:
7z, tar, tar.bz2, tar.gz, tar.lz, tar.lzma, tar.lzo, tar.xz,
tar.z, tar.zst, taz, tbz, tbz2, tgz, tlz, txz, tz2, tzo, tzst,
zip
decompression extensions:
7z, a, alz, apk, arj, bz, bz2, bzip2, cab, cb7, cbr, cbt, cbz,
chm, chw, cpio, deb, dmg, doc, epub, exe, gz, gzip, hxs, iso,
jar, lha, lz, lzh, lzma, lzo, msi, pkg, ppt, rar, rpm, swm,
tar, taz, tbz, tbz2, tgz, tlz, txz, tz2, tzo, tzst, udf, war,
wim, xar, xls, xpi, xz, z, zip, zst
[--pdf] = compress pdf files
<quality> = pdf quality settings (default: default)
screen = low-resolution
ebook = medium-resolution
printer = high-resolution
prepress = very high-resolution
default = useful across a wide variety of uses
(possible larger file size)
all = create for each quality setting a file
Examples:
$script file1.tar.gz file2.tar.bz2 file3.7z
$script --add archive.tar.gz file1.ext file2.ext file3.ext
$script --list file1.tar.gz file2.tar.bz2 file3.7z
$script --pdf ebook document1.pdf document2.pdf document3.pdf
Commands:
tools required for full functionality (X: missing commands): $(check)"
compress() {
archive="$1"
shift
case "$archive" in
*.tar \
| *.tar.bz2 | *.tar.gz | *.tar.lz | *.tar.lzma | *.tar.lzo \
| *.tar.xz | *.tar.z | *.tar.zst | *.taz | *.tbz | *.tbz2 \
| *.tgz | *.tlz | *.txz | *.tz2 | *.tzo | *.tzst)
tar cvfa "$archive" "$@"
;;
*.zip)
7z a -tzip "$archive" "$@"
;;
*.7z)
7z a "$archive" "$@"
;;
*)
printf "compress: unknown extension\n"
exit 1
;;
esac
}
extract() {
[ "$1" = "--list" ] \
&& list=1 \
&& shift
for archive in "$@"; do
if [ -f "$archive" ]; then
base="$(printf "%s" "${archive##*/}" \
| tr '[:upper:]' '[:lower:]')"
folder="${base%.*}"
case "$base" in
*.tar \
| *.tar.bz2 | *.tar.gz | *.tar.lz | *.tar.lzma | *.tar.lzo \
| *.tar.xz | *.tar.z | *.tar.zst | *.taz | *.tbz | *.tbz2 \
| *.tgz | *.tlz | *.txz | *.tz2 | *.tzo | *.tzst)
case "$list" in
1)
tar tf "$archive"
;;
*)
folder="${folder%%.tar}"
printf "tar xvf \"%s\" -C \"%s\"\n" \
"$archive" "$folder"
mkdir -p "$folder"
tar xvf "$archive" -C "$folder" >/dev/null 2>&1
;;
esac
;;
*.7z \
| *.a | *.alz | *.arj | *.bz | *.bz2 | *.bzip2 | *.cab \
| *.cb7 | *.cbr | *.cbt | *.cbz | *.chm | *.chw | *.cpio \
| *.deb | *.dmg | *.doc | *.epub | *.exe | *.gz | *.gzip \
| *.hxs | *.iso | *.jar | *.lha | *.lz | *.lzh | *.lzma \
| *.lzo | *.msi | *.pkg | *.ppt | *.rar | *.rpm | *.swm \
| *.udf | *.war | *.wim | *.xar | *.xls | *.xpi | *.xz \
| *.z | *.zip | *.zst)
case "$list" in
1)
7z l -p "$archive"
;;
*)
printf "7z x \"%s\" -o\"%s\"\n" \
"$archive" "$folder"
mkdir -p "$folder"
7z x "$archive" -o"$folder" >/dev/null 2>&1
;;
esac
;;
*.apk)
# WORKAROUND: 7z problems with bad header apks
case "$list" in
1)
unzip -l -P '' "$archive"
;;
*)
printf "unzip \"%s\" -d \"%s\"\n" \
"$archive" "$folder"
mkdir -p "$folder"
unzip "$archive" -d "$folder" >/dev/null 2>&1
;;
esac
;;
*)
case "$list" in
1) option="list";;
*) option="extract";;
esac
printf "%s \"%s\": unknown archive method\n" \
"$option" "$archive"
exit 1
;;
esac
else
case "$list" in
1) option="list";;
*) option="extract";;
esac
printf "%s \"%s\": file does not exist\n" \
"$option" "$archive"
exit 1
fi
done
}
compress_pdf() {
case $1 in
screen | ebook | printer | prepress | default)
settings="$1"
shift
;;
all)
settings="screen ebook printer prepress default"
shift
;;
*)
settings="default"
;;
esac
for document in "$@"; do
for setting in $settings; do
output_file="$(basename "$document" .pdf)-$setting.pdf"
printf "==> %s\n" "$output_file"
ghostscript \
-sDEVICE=pdfwrite \
-dPDFSETTINGS=/"$setting" \
-dPrinted=false \
-dNOPAUSE \
-dBATCH \
-sOutputFile="$output_file" \
"$document"
done
done
}
case "$1" in
-h | --help | "")
printf "%s\n" "$help"
;;
--list)
shift
extract --list "$@"
;;
--add)
shift
compress "$@"
;;
--pdf)
shift
compress_pdf "$@"
;;
*)
extract "$@"
;;
esac