dotfiles/.local/bin/scripts/ex

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#!/bin/sh -e
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# ex - archive extractor
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# adapted and improved from the commonly circulating version
# detects whether unpacking into a subfolder is sensible
# and shows progress indications for some operations
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# optdepends: rewrite(part of my dotfiles)
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for arg do
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if test -r "$arg"; then
fullpath="$(realpath "$arg")"
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name="$(basename "${fullpath%.*}")"
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namepart="$name.part"
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(
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if test "$(ls -U | wc -l)" -gt 2; then
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mkdir -p "$namepart"
cd "$namepart"
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fi
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echo "Extracting $arg into $PWD"
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case "$arg" in
(*.tar.*|*.tar) tar --extract --file "$fullpath";;
(*.tbz2) tar xjf "$fullpath" ;;
(*.tgz) tar xzf "$fullpath" ;;
(*.7z|*.z01|*.zip|*.jar)
if which 7z >/dev/null
then 7z x "$fullpath"
else unzip "$fullpath" | rewrite
fi;;
(*.gz) gunzip "$fullpath" ;;
(*.bz2) bunzip2 "$fullpath" ;;
(*.rar) unrar x "$fullpath" ;;
(*.deb) ar x "$fullpath" ;;
(*.zst) unzstd "$fullpath" ;;
(*.Z) uncompress "$fullpath";;
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(*) echo "'$arg' cannot be extracted by ex" >&2;;
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esac
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test "$(basename "$PWD")" = "$namepart" &&
if test $# -lt 2 -a "$(ls -U | wc -l)" -lt 3
then test "$(ls)" && mv * ..
cd .. && rm -d "$namepart"
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else cd .. && mv "$namepart" "$name"
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fi
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)
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else
echo "'$1' is not a readable file"
fi
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done