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|
#compdef tar
# Tar completion. Features:
# - Tries to collect tar commands from second position, single letter
# option, and long options.
# - `tar' can be called anything, will use the correct name
# - Uses the function `_tar_archive' to complete archive files.
# - Tries to find out if compressed archives should be used.
# - Completes files inside archive. This is supposed to look pretty
# much as if the files are in an ordinary directory hierarchy.
# Handles extraction from compressed archives (GNU tar).
# - Anywhere -- appears, gets a list of long options to complete from
# tar itself (GNU tar)
# - Things like --directory=... are also completed correctly.
emulate -LR zsh
setopt extendedglob
local _tar_cmd tf tmp del
# First we collect in `_tar_cmd' single letter options describing what
# should be done with the archive and if it is compressed. This
# collected from options arguments that start with only one hyphen,
# from some of the possible long options, and from the second word if
# that does not start with a hyphen.
tmp=("${(@M)words:#-[^-]*}")
_tar_cmd="${(j::)tmp#-}"
(( $words[(I)--(un|)gzip] )) && _tar_cmd="z$_tar_cmd"
(( $words[(I)--(un|)compress] )) && _tar_cmd="Z$_tar_cmd"
(( $words[(I)--list] )) && _tar_cmd="t$_tar_cmd"
(( $words[(I)--(extract|get)] )) && _tar_cmd="x$_tar_cmd"
(( $words[(I)--create] )) && _tar_cmd="c$_tar_cmd"
# Other ways of finding out what we're doing: first
# look in the first argument if it's not an option
if [[ "$words[2]" = *[txcdruA]*~-* ]]; then
_tar_cmd="$words[2]$_tar_cmd"
elif [[ $_tar_cmd != *[txcdruA]* && CURRENT -gt 2 ]]; then
# look for more obscure long options: these aren't all handled.
(( $words[(I)--(diff|compare)] )) && _tar_cmd="d$_tar_cmd"
(( $words[(I)--append] )) && _tar_cmd="r$_tar_cmd"
(( $words[(I)--update] )) && _tar_cmd="u$_tar_cmd"
(( $words[(I)--(con|)catenate] )) && _tar_cmd="A$_tar_cmd"
(( $words[(I)--delete] )) && del=1
fi
# Next, we try to find the archive name and store it in `tf'. The name
# is searched after a `--file=' long option, in the third word if the
# second one didn't start with a hyphen but contained a `f', and after
# an option argument starting with only one hyphen and containing a `f'.
tmp="$words[(I)--file=*]"
if (( tmp )); then
tf=${~words[tmp][8,-1]}
_tar_cmd="f$_tar_cmd"
elif [[ "$words[2]" != -* && "$words[2]" = *f* ]]; then
tf=${~words[3]}
_tar_cmd="f$_tar_cmd"
else
tmp="${words[(I)-*f*~--*]}"
if (( tmp )); then
tf=${~words[tmp+1]}
_tar_cmd="f$_tar_cmd"
fi
fi
# Now we complete...
if [[ "$PREFIX" = --* ]]; then
# ...long options after `--'.
_arguments -- '--owner*:user:_users' \
'*=(PROG|COMMAND)*:program:_command_names -e' \
'*=ARCHIVE*:archive: _tar_archive' \
'*=NAME*:file:_files' \
'*=CONTROL*::version control:(t numbered nil existing never simple)'
elif [[ ( CURRENT -gt 2 && "$words[CURRENT-1]" = -*f* &&
"$words[CURRENT-1]" != --* ) ||
( CURRENT -eq 3 && "$words[2]" = *f* && "$words[2]" != -* ) ]]; then
# ...archive files if we think they are wanted here.
_tar_archive
elif [[ ( "$_tar_cmd" = *[xt]* || -n $del ) && -n "$tf" ]]; then
# ...and files from the archive if we found an archive name and tar
# commands. We run `tar t...' on the file, keeping the list of
# filenames cached, plus the name of the tarfile so we know if it
# changes.
local largs=-tf expl
if [[ $_tar_cmd = *z* ]]; then
largs=-tzf
elif [[ $_tar_cmd = *Z* ]]; then
largs=-tZf
else
# Some random compression program e.g. bzip2
tmp="${words[(r)--use-comp*]}"
[[ -n $tmp ]] && largs=($tmp -tf)
fi
if [[ $tf != $_tar_cache_name ]]; then
_tar_cache_list=("${(@f)$($words[1] $largs $tf)}")
_tar_cache_name=$tf
fi
_description expl 'file from archive'
_multi_parts "$expl[@]" / _tar_cache_list
else
# See if we should use a path prefix. We have to use eval as the dir can
# be any unevaluated thing which appears on the command line, including a
# parameter.
tmp=${words[(r)--dir[a-z]#=*]}
if [[ -n $tmp ]]; then
eval "tmp=(${tmp#*=})"
_path_files -W tmp
else
_files
fi
fi
|
