#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 `--'. _long_options '--owner*' "_tilde" \ '*=(PROG|COMMAND)*' "_command_names" \ '*=ARCHIVE*' "_tar_archive" \ '*=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 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 _multi_parts / _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