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Diffstat (limited to '')
| -rw-r--r-- | completions/tar | 711 |
1 files changed, 711 insertions, 0 deletions
diff --git a/completions/tar b/completions/tar new file mode 100644 index 0000000..04b7fc0 --- /dev/null +++ b/completions/tar @@ -0,0 +1,711 @@ +# bash completion for GNU tar -*- shell-script -*- +# +# General info +# ============ +# +# The "old" style arguments +# ------------------------- +# +# We don't "advice" the old tar option format by default for GNU tar, example: +# +# 'tar czfT /tmp/archive.tar patterns.txt' +# +# We rather advice the 'tar -czf /tmp/archive.tar -T patterns.txt' format of +# arguments. Though, if user starts the 'first' tar argument without leading +# dash, we treat the command line apropriately. +# +# +# long/short options origin +# ------------------------- +# +# For GNU tar, everything is parsed from `tar --help` output so not so much +# per-distribution work should be needed. The _parse_help does not seem to be +# good enough so parsed here directly. +# +# +# FIXME: --starting-file (-K) (should be matched for extraction only) +# FIXME: handle already used (at least short) options +# FIXME: Test-cases for make check. +# - check for no global variable pollution +# FIXME: why PS4='$BASH_SOURCE:$LINENO: ' shows sometimes negative lines? +# FIXME: timeout on tarball listing +# FIXME: cache 'tar --help' parsing results into global variables +# FIXME: at least 'tar -<tab>' should show some helping text (apart from just +# pure option advices) +# FIXME: short option completion should be more intuitive +# - verbose mode option should be advised multiple times +# - mode option should be advised only once +# - format option should be advised only once +# ... + +__gtar_parse_help_opt() +{ + local opttype arg opt separator optvar + opttype=long + arg="$2" + opt="$1" + separator=" " + + case "$opt" in + --*) ;; + + -\?) + return + ;; + -*) + opttype=short + opt=${opt##-} + separator= + ;; + *) + echo "bash_completion: $FUNCNAME: unknown option $opt" >&2 + return 1 + ;; + esac + + # Remove arguments. + opt=${opt//\[*/} + opt=${opt//=*/=} + + # Basic sanity. + opt=${opt//\"*/} + opt=${opt//\'*/} + opt=${opt//\;*/} + + optvar=$opttype'_arg_'$arg + + eval "$optvar=\"\$$optvar$separator\"\"$opt\"" +} + +__gtar_parse_help_line() +{ + local i + + for i in $1; do + case "$i" in + # regular options + --* | -*) + __gtar_parse_help_opt "$i" "$2" + ;; + + # end once there is single non-option word + *) + break + ;; + esac + done +} + +__gnu_tar_parse_help() +{ + local str line arg + while IFS= read line; do + # Ok, this requires some comment probably. The GNU help output prints + # options on lines beginning with spaces. After that, there is one + # or more options separated by ', ' separator string. We are matching + # like this then: ^<spaces>(<separator>?<option>)+<whatever>$ + if [[ $line =~ \ + ^[[:blank:]]{1,10}(((,[[:blank:]])?(--?([\]\[a-zA-Z0-9?=-]+))(,[[:space:]])?)+).*$ ]]; then + + line=${BASH_REMATCH[1]} + str="${line//,/ }" + + # Detect that all options on this line accept arguments (and whether + # the arguments are required or not). Note that only long option + # description in GNU help output mentions arguments. So the $line + # variable may contain e.g. '-X, --XXX[=NAME], -XXX2[=NAME]'. + arg=none + if [[ $line =~ --[A-Za-z0-9-]+(\[?)= ]]; then + [[ -n ${BASH_REMATCH[1]} ]] && arg=opt || arg=req + fi + + __gtar_parse_help_line "$str" "$arg" + fi + done <<<"$(tar --help)" + + long_opts="\ + $long_arg_none $long_arg_opt $long_arg_req" + + short_opts="$short_arg_none$short_arg_opt$short_arg_req" +} + +# Hack: parse --warning keywords from tar's error output +__gtar_parse_warnings() +{ + local line + LC_ALL=C tar --warning= 2>&1 | while IFS= read line; do + if [[ $line =~ ^[[:blank:]]*-[[:blank:]]*[\`\']([a-zA-Z0-9-]+)\'$ ]]; then + echo "${BASH_REMATCH[1]} no-${BASH_REMATCH[1]}" + fi + done +} + +# Helper to obtain last character of string. +__tar_last_char() +{ + echo "${1:$((${#1} - 1))}" +} + +__tar_parse_old_opt() +{ + local first_word char + + # current word is the first word + [[ $cword -eq 1 && -n $cur && ${cur:0:1} != '-' ]] && + old_opt_progress=1 + + # check that first argument does not begin with "-" + first_word=${words[1]} + [[ -n $first_word && ${first_word:0:1} != "-" ]] && + old_opt_used=1 + + # parse the old option (if present) contents to allow later code expect + # corresponding arguments + if ((old_opt_used == 1)); then + char=${first_word:0:1} + while [[ -n $char ]]; do + if __tar_is_argreq "$char"; then + old_opt_parsed+=("$char") + fi + first_word=${first_word##$char} + char=${first_word:0:1} + done + fi +} + +# Make the analysis of whole command line. +__tar_preparse_cmdline() +{ + local first_arg i modes="ctxurdA" + + shift # progname + + __tar_parse_old_opt + + first_arg=1 + for i in "$@"; do + case "$i" in + --delete | --test-label) + tar_mode=${i:2:100} + tar_mode_arg=$i + break + ;; + --*) + # skip + ;; + -*[$modes]*) + tar_mode=${i//[^$modes]/} + tar_mode=${tar_mode:0:1} + tar_mode_arg=$i + break + ;; + *[$modes]*) + # Only the first arg may be "MODE" without leading dash + if ((first_arg == 1)); then + tar_mode=${i//[^$modes]/} + tar_mode=${tar_mode:0:1} + tar_mode_arg=$i + fi + ;; + esac + first_arg=0 + done +} + +# Generate completions for -f/--file. +__tar_file_option() +{ + local ext="$1" + + case "$tar_mode" in + c) + # no need to advise user to re-write existing tarball + _filedir -d + ;; + *) + _filedir "$ext" + ;; + esac +} + +# Returns truth if option requires argument. No equal sign must be pasted. +# Accepts option in format: 'c', '-c', '--create' +__tar_is_argreq() +{ + local opt + opt=$1 + case "$opt" in + -[A-Za-z0-9?]) + [[ $short_arg_req =~ ${opt##-} ]] && return 0 + ;; + [A-Za-z0-9?]) + [[ $short_arg_req =~ ${opt} ]] && return 0 + ;; + --*) + [[ $long_arg_req =~ [[:blank:]]$opt=[[:blank:]] ]] && return 0 + ;; + esac + + return 1 +} + +# Called only for short parameter +__tar_complete_mode() +{ + local short_modes rawopt generated \ + allshort_raw_unused allshort_raw \ + filler i + + short_modes="ctx" + [[ ! -v basic_tar ]] && short_modes="ctxurdA" + + # Remove prefix when needed + rawopt=${cur#-} + + # -c -z -x ... => czx + allshort_raw=${short_opts//[- ]/} + + # init the 'mode' option if no option is in ${cur} + if [[ $tar_mode == none ]]; then + + # when user passed something like 'tar cf' do not put the '-' before + filler= + if [[ -z $cur && ! -v basic_tar ]]; then + filler=- + fi + + generated="" + for ((i = 0; 1; i++)); do + local c="${short_modes:i:1}" + [[ -z $c ]] && break + generated+=" $filler$cur$c" + done + + COMPREPLY=($(compgen -W "$generated")) + return 0 + fi + + # The last short option requires argument, like '-cf<TAB>'. Cut the + # completion here to enforce argument processing. + if ((old_opt_progress == 0)) && + __tar_is_argreq "$(__tar_last_char "$cur")"; then + COMPREPLY=("$cur") && return 0 + fi + + allshort_raw_unused=${allshort_raw//[$rawopt]/} + if [[ $tar_mode != none ]]; then + allshort_raw_unused=${allshort_raw_unused//[$short_modes]/} + fi + + generated= + for ((i = 0; 1; i++)); do + local c="${allshort_raw_unused:i:1}" + [[ -z $c ]] && break + generated+=" $cur$c" + done + + COMPREPLY=($(compgen -W "$generated")) + + return 0 +} + +__gtar_complete_lopts() +{ + local rv + COMPREPLY=($(compgen -W "$long_opts" -- "$cur")) + rv=$? + [[ ${COMPREPLY-} == *= ]] && compopt -o nospace + return $rv +} + +__gtar_complete_sopts() +{ + local generated short_mode_opts i c + short_mode_opts="ctxurdA" + generated=${short_opts//[$short_mode_opts]/} + + for ((i = 0; 1; i++)); do + c="${allshort_raw_unused:i:1}" + [[ -z $c ]] && break + generated+=" $cur$c" + done + + COMPREPLY=($(compgen -W "$generated" -- "$cur")) +} + +__tar_try_mode() +{ + case "$cur" in + --*) + # posix tar does not support long opts + [[ -v basic_tar ]] && return 0 + __gtar_complete_lopts + return $? + ;; + + -*) + # posix tar does not support short optios + [[ -v basic_tar ]] && return 0 + + __tar_complete_mode && return 0 + ;; + + *) + if [[ $cword -eq 1 || $tar_mode == none ]]; then + __tar_complete_mode && return 0 + fi + ;; + esac + return 1 +} + +__tar_adjust_PREV_from_old_option() +{ + # deal with old style arguments here + # $ tar cfTC # expects this sequence of arguments: + # $ tar cfTC ARCHIVE_FILE PATTERNS_FILE CHANGE_DIR + if ((old_opt_used == 1 && cword > 1 && \ + cword < ${#old_opt_parsed[@]} + 2)); then + # make e.g. 'C' option from 'cffCT' + prev="-${old_opt_parsed[cword - 2]}" + fi +} + +__tar_extract_like_mode() +{ + local i + for i in x d t delete; do + [[ $tar_mode == "$i" ]] && return 0 + done + return 1 +} + +__tar_try_list_archive() +{ + local tarball tarbin untar i + + __tar_extract_like_mode || return 1 + + # This all is just to approach directory completion from "virtual" + # directory structure in tarball (for which the _filedir is unusable) + + set -- "${words[@]}" + tarbin=$1 + untar="tf" + shift + + for i in "$@"; do + if [[ $i == *.$ext ]]; then + tarball=$i + break + fi + done + if [[ -n $tarball ]]; then + local IFS=$'\n' + COMPREPLY=($(compgen -o filenames -W "$( + $tarbin $untar "$tarball" 2>/dev/null | + while read line; do + printf "%q\n" "$(printf %q"\n" "$line")" + done + )" -- "$(printf "%q\n" "$cur")")) + return 0 + fi +} + +__tar_cleanup_prev() +{ + if [[ $prev =~ ^-[a-zA-Z0-9?]*$ ]]; then + # transform '-caf' ~> '-f' + prev="-$(__tar_last_char "$prev")" + fi +} + +__tar_detect_ext() +{ + local tars='@(@(tar|gem|spkg)?(.@(Z|[bgx]z|bz2|lz?(ma|o)|zst))|t@([abglx]z|b?(z)2|zst))' + ext="$tars" + + case "$tar_mode_arg" in + --*) + # Should never happen? + ;; + ?(-)*[cr]*f) + ext='@(tar|gem|spkg)' + case ${words[1]} in + *a*) ext="$tars" ;; + *z*) ext='t?(ar.)gz' ;; + *Z*) ext='ta@(r.Z|z)' ;; + *[jy]*) ext='t@(?(ar.)bz?(2)|b2)' ;; + *J*) ext='t?(ar.)xz' ;; + esac + ;; + +([^ZzJjy])f) + # Pass through using defaults above + ;; + *[Zz]*f) + ext='@(@(t?(ar.)|gem.|spkg.)@(gz|Z)|taz)' + ;; + *[jy]*f) + ext='@(@(t?(ar.)|gem.)bz?(2)|spkg|tb2)' + ;; + *[J]*f) + ext='@(@(tar|gem|spkg).@(lzma|xz)|t[lx]z)' + ;; + esac +} + +_gtar() +{ + local long_opts short_opts \ + long_arg_none="" long_arg_opt="" long_arg_req="" \ + short_arg_none="" short_arg_opt="" short_arg_req="" \ + tar_mode tar_mode_arg old_opt_progress=0 \ + old_opt_used=0 old_opt_parsed=() + + # Main mode, e.g. -x or -c (extract/creation) + local tar_mode=none + + # The mode argument, e.g. -cpf or -c + # FIXME: handle long options + local tar_mode_arg= + + if [[ -v BASHCOMP_TAR_OPT_DEBUG ]]; then + set -x + PS4='$BASH_SOURCE:$LINENO: ' + fi + + local cur prev words cword split + + _init_completion -s || return + + # Fill the {long,short}_{opts,arg*} + __gnu_tar_parse_help + + __tar_preparse_cmdline "${words[@]}" + + local ext + + __tar_detect_ext + + while true; do # just-for-easy-break while, not looping + __tar_adjust_PREV_from_old_option + __tar_posix_prev_handle && break + __tar_cleanup_prev + + # Handle all options *REQUIRING* argument. Optional arguments are up to + # user (TODO: is there any sane way to deal with this?). This case + # statement successes only if there already is PREV. + case $prev in + --directory | -!(-*)C) + _filedir -d + break + ;; + --atime-preserve) + COMPREPLY=($(compgen -W 'replace system' -- "$cur")) + break + ;; + --group) + COMPREPLY=($(compgen -g -- "$cur")) + break + ;; + --owner) + COMPREPLY=($(compgen -u -- "$cur")) + break + ;; + --info-script | --new-volume-script | --rmt-command | --rsh-command | \ + --use-compress-program | -!(-*)[FI]) + compopt -o filenames + COMPREPLY=($(compgen -c -- "$cur")) + break + ;; + --volno-file | --add-file | --files-from | --exclude-from | \ + --index-file | --listed-incremental | -!(-*)[TXg]) + _filedir + break + ;; + --format | -!(-*)H) + COMPREPLY=($(compgen -W 'gnu oldgnu pax posix ustar v7' \ + -- "$cur")) + break + ;; + --quoting-style) + COMPREPLY=($(compgen -W 'literal shell shell-always c c-maybe + escape locale clocale' -- "$cur")) + break + ;; + --totals) + COMPREPLY=($(compgen -W 'SIGHUP SIGQUIT SIGINT SIGUSR1 SIGUSR2' \ + -- "$cur")) + break + ;; + --warning) + COMPREPLY=($(compgen -W "$(__gtar_parse_warnings)" -- "$cur")) + break + ;; + --file | -!(-*)f) + __tar_file_option "$ext" + break + ;; + --*) + # parameter with required argument but no completion yet + [[ " $long_arg_req " =~ \ $prev=\ ]] && break + + # parameter with optional argument passed with =, something like + # --occurrence=*<TAB> which is not handled above + [[ " $long_arg_opt " =~ \ $prev\ ]] && break + + # if there is some unknown option with '=', for example + # (literally) user does --nonexistent=<TAB>, we do not want + # continue also + $split && break + + # Most probably, when code goes here, the PREV variable contains + # some string from "$long_arg_none" and we want continue. + ;; + -!(-*)[a-zA-Z0-9?]) + # argument required but no completion yet + [[ $short_arg_req =~ ${prev##-} ]] && break + ;; + esac + + # safety belts + case "$cur" in + -[a-zA-Z0-9]=*) + # e.g. 'tar -c -f=sth' does not what user could expect + break + ;; + esac + + # Handle the main operational mode of tar. We should do it as soon as + # possible. + __tar_try_mode && break + + # handle others + case "$cur" in + --*) + __gtar_complete_lopts + break + ;; + -*) + # called only if it is *not* first parameter + __gtar_complete_sopts + break + ;; + esac + + # the first argument must be "mode" argument or --param, if any of those + # was truth - the 'break' statement would have been already called + ((cword == 1)) && break + + __tar_try_list_archive && break + + # file completion on relevant files + if [[ $tar_mode != none ]]; then + _filedir + fi + + break + done # just-for-easy-break while + + if [[ -v BASHCOMP_TAR_OPT_DEBUG ]]; then + set +x + unset PS4 + fi +} + +__tar_posix_prev_handle() +{ + case "$prev" in + -f) + __tar_file_option "$ext" + return 0 + ;; + -b) + return 0 + ;; + esac + + return 1 +} + +_posix_tar() +{ + local long_opts short_opts basic_tar \ + long_arg_none="" long_arg_opt long_arg_req="" \ + short_arg_none short_arg_opt short_arg_req \ + tar_mode tar_mode_arg old_opt_progress=0 \ + old_opt_used=1 old_opt_parsed=() + + # Main mode, e.g. -x or -c (extract/creation) + local tar_mode=none + + # The mode argument, e.g. -cpf or -c + local tar_mode_arg= + + local cur prev words cword split + + _init_completion -s || return + + basic_tar=yes + tar_mode=none + + # relatively compatible modes are {c,t,x} + # relatively compatible options {b,f,m,v,w} + short_arg_req="fb" + short_arg_none="wmv" + short_opts="$short_arg_req$short_arg_none" + + __tar_preparse_cmdline "${words[@]}" + + local ext + + __tar_detect_ext + + __tar_adjust_PREV_from_old_option + + __tar_posix_prev_handle && return + + __tar_try_mode && return + + __tar_try_list_archive && return + + # file completion on relevant files + _filedir +} + +_tar() +{ + local cmd=${COMP_WORDS[0]} func line + line="$($cmd --version 2>/dev/null)" + case "$line" in + *GNU*) + func=_gtar + ;; + *) + func=_posix_tar + ;; + esac + $func "$@" + + # Install real completion for subsequent completions + if [[ ${COMP_TAR_INTERNAL_PATHS-} ]]; then + complete -F $func -o dirnames tar + else + complete -F $func tar + fi + unset -f _tar +} + +if [[ ${COMP_TAR_INTERNAL_PATHS-} ]]; then + complete -F _tar -o dirnames tar + complete -F _gtar -o dirnames gtar + complete -F _posix_tar -o dirnames bsdtar + complete -F _posix_tar -o dirnames star +else + complete -F _tar tar + complete -F _gtar gtar + complete -F _posix_tar bsdtar + complete -F _posix_tar star +fi + +# ex: filetype=sh |