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49d34d00cd
This change fixes the case where the compressed file (e.g. tools.tgz) only contains a folder with the same name (e.g. tools) in its root folder. tools.tgz: |- tools |- fileA.txt |- fileB.txt \- fileC.txt In that case, the "smart" folder creation mechanism will extract the files in a folder "tools", and this extraction folder will contain a single folder with the same name. Before this fix, the tool would try to move out the inside folder to the parent one, but there would already be a folder named "tools", so it would generate a conflict. This change first renames the inside folder to a random string, and only then it is moved outside and the old extraction folder is deleted.
122 lines
4.2 KiB
Bash
122 lines
4.2 KiB
Bash
alias x=extract
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extract() {
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setopt localoptions noautopushd
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if (( $# == 0 )); then
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cat >&2 <<'EOF'
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Usage: extract [-option] [file ...]
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Options:
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-r, --remove Remove archive after unpacking.
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EOF
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fi
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local remove_archive=1
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if [[ "$1" == "-r" ]] || [[ "$1" == "--remove" ]]; then
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remove_archive=0
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shift
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fi
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local pwd="$PWD"
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while (( $# > 0 )); do
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if [[ ! -f "$1" ]]; then
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echo "extract: '$1' is not a valid file" >&2
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shift
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continue
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fi
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local success=0
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local extract_dir="${1:t:r}"
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local file="$1" full_path="${1:A}"
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# Create an extraction directory based on the file name
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command mkdir -p "$extract_dir"
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builtin cd -q "$extract_dir"
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case "${file:l}" in
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(*.tar.gz|*.tgz)
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(( $+commands[pigz] )) && { tar -I pigz -xvf "$full_path" } || tar zxvf "$full_path" ;;
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(*.tar.bz2|*.tbz|*.tbz2)
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(( $+commands[pbzip2] )) && { tar -I pbzip2 -xvf "$full_path" } || tar xvjf "$full_path" ;;
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(*.tar.xz|*.txz)
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(( $+commands[pixz] )) && { tar -I pixz -xvf "$full_path" } || {
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tar --xz --help &> /dev/null \
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&& tar --xz -xvf "$full_path" \
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|| xzcat "$full_path" | tar xvf - } ;;
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(*.tar.zma|*.tlz)
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tar --lzma --help &> /dev/null \
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&& tar --lzma -xvf "$full_path" \
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|| lzcat "$full_path" | tar xvf - ;;
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(*.tar.zst|*.tzst)
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tar --zstd --help &> /dev/null \
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&& tar --zstd -xvf "$full_path" \
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|| zstdcat "$full_path" | tar xvf - ;;
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(*.tar) tar xvf "$full_path" ;;
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(*.tar.lz) (( $+commands[lzip] )) && tar xvf "$full_path" ;;
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(*.tar.lz4) lz4 -c -d "$full_path" | tar xvf - ;;
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(*.tar.lrz) (( $+commands[lrzuntar] )) && lrzuntar "$full_path" ;;
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(*.gz) (( $+commands[pigz] )) && pigz -dk "$full_path" || gunzip -k "$full_path" ;;
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(*.bz2) bunzip2 "$full_path" ;;
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(*.xz) unxz "$full_path" ;;
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(*.lrz) (( $+commands[lrunzip] )) && lrunzip "$full_path" ;;
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(*.lz4) lz4 -d "$full_path" ;;
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(*.lzma) unlzma "$full_path" ;;
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(*.z) uncompress "$full_path" ;;
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(*.zip|*.war|*.jar|*.ear|*.sublime-package|*.ipa|*.ipsw|*.xpi|*.apk|*.aar|*.whl) unzip "$full_path" ;;
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(*.rar) unrar x -ad "$full_path" ;;
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(*.rpm)
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rpm2cpio "$full_path" | cpio --quiet -id ;;
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(*.7z) 7za x "$full_path" ;;
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(*.deb)
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command mkdir -p "control" "data"
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ar vx "$full_path" > /dev/null
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builtin cd -q control; extract ../control.tar.*
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builtin cd -q ../data; extract ../data.tar.*
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builtin cd -q ..; command rm *.tar.* debian-binary ;;
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(*.zst) unzstd "$full_path" ;;
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(*.cab) cabextract "$full_path" ;;
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(*.cpio|*.obscpio) cpio -idmvF "$full_path" ;;
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(*.zpaq) zpaq x "$full_path" ;;
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(*)
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echo "extract: '$file' cannot be extracted" >&2
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success=1 ;;
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esac
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(( success = success > 0 ? success : $? ))
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(( success == 0 && remove_archive == 0 )) && command rm "$full_path"
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shift
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# Go back to original working directory
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builtin cd -q "$pwd"
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# If content of extract dir is a single directory, move its contents up
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# Glob flags:
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# - D: include files starting with .
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# - N: no error if directory is empty
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# - Y2: at most give 2 files
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local -a content
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content=("${extract_dir}"/*(DNY2))
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if [[ ${#content} -eq 1 && -d "${content[1]}" ]]; then
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# The extracted folder (${content[1]}) may have the same name as $extract_dir
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# If so, we need to rename it to avoid conflicts in a 3-step process
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#
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# 1. Move and rename the extracted folder to a temporary random name
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# 2. Delete the empty folder
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# 3. Rename the extracted folder to the original name
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if [[ "${content[1]:t}" == "$extract_dir" ]]; then
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# =(:) gives /tmp/zsh<random>, with :t it gives zsh<random>
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local tmp_dir==(:); tmp_dir="${tmp_dir:t}"
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command mv -f "${content[1]}" "$tmp_dir" \
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&& command rmdir "$extract_dir" \
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&& command mv -f "$tmp_dir" "$extract_dir"
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else
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command mv -f "${content[1]}" . \
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&& command rmdir "$extract_dir"
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fi
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elif [[ ${#content} -eq 0 ]]; then
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command rmdir "$extract_dir"
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fi
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done
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}
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