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#compdef emerge ebuild quickpkg emaint env-update portageq repoman tbz2tool

# Already done:
# emerge        (fully done)
# ebuild        (fully done)
# emaint        (fully done)
# env-update    (fully done)
# portageq      (fully done)
# repoman       (fully done)
# tbz2tool      (fully done)
#
# Still TODO:
# xpak


# Stuff for ebuild
_ebuild () {
	if (( CURRENT == 2 ));then
		       _files -g \*.ebuild
	elif (( CURRENT > 2 ));then
		_values "ebuild command" \
		'clean[Cleans the temporary build directory]' \
		'help[Show help]' \
		'setup[Run all package specific setup actions and exotic system checks.]' \
		'fetch[Fetch all necessary files]' \
		'digest[Creates a digest file for the package]' \
		'unpack[Extracts the sources to a subdirectory in the build directory]' \
		'compile[Compiles the extracted sources by running the src_compile()]' \
		'preinst[Run specific actions that need to be done before installation]' \
		'install[Installs the package to the temporary install directory]' \
		'postinst[Run specific actions that need to be done after installation]' \
		'qmerge[Installs the package de the filesystem]' \
		'merge[perform the following actions: fetch, unpack, compile, install and qmerge.]' \
		'unmerge[Remove the installed files of the packages]' \
		'prerm[Run specific actions that need to be executed before unmerge]' \
		'postrm[Run specific actions that need to be executed after unmerge]' \
		'config[Run specific actions needed to be executed after the emerge process has completed.]' \
		'package[This command is a lot like the merge command, but create a .tbz2 package]' \
		'manifest[Updates  the manifest file for the package.]' \
		'rpm[Builds a RedHat RPM package]'
	fi

}


# Stuff for quickpkg

_quickpkg () {
	if compset -P '(\\|)(>=|<=|<|>|=)'; then
	_arguments -s \
    	    '*:installed package:_gentoo_packages installed_versions'
	  elif compset -P '(\\|)[/]'; then
		_path_files -W / -/
	  else
    		_arguments \
		    '*:installed package:_gentoo_packages installed'
	  fi
}

# Stuff for emerge

_emerge () {
  local nopkg_opts all noask_opts bopts install_args common_args profiles

  noask_opts=(-p -a --pretend --ask --regen --info --search -s --searchdesc \
  -S --version -V --help -h --metadata --check-news)

  nopkg_opts=(--resume --skipfirst -c --clean -h --help --depclean --info \
  --metadata -P --prune --regen -s --search -S --searchdesc --sync -C \
  --unmerge -V --version -i --inject --list-sets --deselect --check-news)

  bopts=($nopkg_opts -b --buildpkg -B --buildpkgonly -G --getbinpkgonly -g \
  --getbinpkg -k --usepkg -K --usepkgonly --fetch-all-uri -f -F --fetchonly)

  all=($bopts -l --changelog --columns --deep -D --emptytree -e --newuse \
  --noconfmem --nodeps -O --noreplace -n --oneshot -1 -o --onlydeps --tree -t \
  -u --update -U --upgradeonly --config)

  common_args=(
    "($noask_opts --sync)"{-p,--pretend}"[Simply  display  what would be done]"
    "($noask_opts)"{-a,--ask}"[Ask what would be done]"
    '(-d --debug --help -h --version -V)'{-d,--debug}'[Tells emerge to run the emerge command in debug mode]'
    '(--quiet -q --verbose -v)'{-q,--quiet}'[General outcome is a reduced or condensed output]'
    '(--verbose -v --quiet -q)'{-v,--verbose}'[Tell emerge to run in verbose mode]'
    '--nospinner[Disables the spinner for the session]'
    '(: -)'{-h,--help}'[Displays help]'
    "(: -)--config[Run package specific actions needed to be executed after the emerge process has completed]:installed atom:_gentoo_packages installed"
    "(: -)--list-sets[Displays a list of available package sets]"
	"--color=[Color output]:yes/no:((y\:'yes' n\:'no'))"
	"--accept-properties=[Temporarily override the ACCEPT_PROPERTIES variable]"
	"--accept-restrict=[Temporarily override the ACCEPT_RESTRICT variable]"
	"($noask_opts)"{-A,--alert}"[Add a terminal bell to all interactive prompts]"
	"--ignore-default-opts[Ignore EMERGE_DEFAULT_OPTS]"
	"--moo[Have you mooed today?]"
	"(--jobs)"{--jobs=}"[Number of packages to build simultaneously]:jobs:({1.."${#${$(</proc/cpuinfo)/^processor}}"})"
  )
  install_args=(
	"--deselect[Remove atom from world file]"
	"--alphabetical[Sort use/other flags output alphabetically despite of status]"
	"--ask-enter-invalid[When with --ask, interpret a single 'Enter' key press as invalid input]"
	"--autounmask[Automatically unmask packages and generate package.use]"
	"--autounmask-unrestricted-atoms[Use >= for autounmask if possible]"
	"--autounmask-keep-masks[Don't unmask hardmasks and unkeyworded (live)]"
	"--autounmask-write[Automatically write autounmask changes (respect CONFIG_PROTECT)]"
	"--backtrack=[Number of times to backtrack if dependency calculation fails]:number:(0 10 30)"
	"--binpkg-respect-use[Ignore binary packages if their uses don't match current config]"
	"--complete-graph[Consider the deep dependencies of all packages from the world set]"
	"--complete-graph-if-new-use[--complete-graph if USE or IUSE will change for an installed package]"
	"--complete-graph-if-new-ver[--complete-graph if an installed package version will change]"
	"--config-root=[Set PORTAGE_CONFIGROOT variable]:root path:_files -/"
	"--depclean-lib-check[Check library link-level dependencies]"
	"--digest[Prevent corruption from being noticed]"
	"--dynamic-deps[Substitute the dependencies of installed packages with the dependencies of corresponding unbuilt ebuilds]"
	"--fail-clean[Clean up temporary files after a build failure]"
	"--ignore-built-slot-operator-deps[Ignore the slot/sub-slot dependencies for built pkg]"
	"--keep-going[Continue as much as possible after an error]"
	"--load-average[No new builds should be started if there are other builds running and the load average is at least VALUE]"
	"--misspell-suggestions[Enable or disable misspell suggestions]"
	"--newrepo[Recompile a package if it is now being pulled from a different repository]"
	"--usepkg-exclude[Ignore matching binary packages]:installed atom:_gentoo_packages installed"
	"--rebuild-exclude[Do not rebuild matching packages on --rebuild]:installed atom:_gentoo_packages installed"
	"--rebuild-ignore[Do not rebuild packages that depend on matching packages on --rebuild]:installed atom:_gentoo_packages installed"
	"--package-moves[Perform package moves when necessary]"
	"--pkg-format[Binary package format]:archive type:(tar rpm)"
	"--prefix=[Set EPREFIX env variable]:prefix path:_files -/"
	"--quiet-build[Redirect all build output to logs]"
	"--quiet-fail[Suppresses display of the build log on stdout]"
	"--quiet-repo-display[Suppress ::repository in output (and use numbers)]"
	"--quiet-unmerge-warn[Disable the warning message on --unmerge and friends]"
	"--rebuild-if-new-slot[Automatically rebuild or reinstall packages when dependencies can be satisfied by a newer slot]"
	"--rebuild-if-new-rev[Rebuild packages when build-time dependencies are built from source, if the dependency is not already installed with the same version and revision]"
	"--rebuild-if-new-ver[Rebuild packages when build-time dependencies are built from source, if the dependency is not already installed with the same version]"
	"--rebuild-if-unbuilt[Rebuild packages when build-time dependencies are built from source]"
	"--rebuilt-binaries[Replace installed packages with binary packages that have been rebuilt]"
	"--rebuilt-binaries-timestamp[Only binaries older than TIMESTAMP will be considered by the rebuilt-binaries logic]:TIMESTAMP"
	"--reinstall[Alias for --changed-use (currently)]:reinstall opts:(changes-use)"
	"--reinstall-atoms[Treat matching packages as if they are not installed]:installed atoms:_gentoo_packages installed"
	"--root=[Set ROOT env variable]:prefix path:_files -/"
	"(: $nopkg_opts)"{-w,--select}"[Add specified packages to the world set (inverse of --oneshot)]"
	"--selective=[Use --selective=n if you want to forcefully disable --selective, regardless of options like --changed-use, --newuse, --noreplace, or --update]:yes/no:((y\:'yes' n\:'no'))"
	"--unordered-display[Produce more readable package tree with --tree]"
	"--use-ebuild-visibility[Use unbuilt ebuild metadata for visibility checks on built packages]"
	"--useoldpkg-atoms[Prefer matching binary packages over newer unbuilt packages]:available atom:_gentoo_packages available"
    "($bopts)"{-b,--buildpkg}"[Tells emerge to build binary packages]"
    "($bopts)--buildpkg-exclude[Space separated list of package atoms for which no binary packages should be built]"
	"($bopts)--exclude[Space separated list of package names or slot atoms which should not be installed]"
    "($bopts)"{-B,--buildpkgonly}"[Tells emerge to only build binary packages]"
    "($nopkg_opts --emptytree -e -l --changelog --usepkgonly -K)"{-l,--changelog}"[This will show the ChangeLog]"
    "($nopkg_opts -t --tree)--columns[Displays versions in aligned format]"
    "($nopkg_opts -D --deep --newuse -N --changed-use)"{-D,--deep}"[Consider the entire dependency tree of packages]"
    "($nopkg_opts -D --deep --newuse -N --changed-use)"{-N,--newuse}"[Include installed packages where any USE flags have changed since compilation.]"
    "($nopkg_opts -D --deep --newuse -N --changed-use)--changed-use[Include installed packages where enabled USE flags have changed since installation]"
    "($nopkg_opts -e -l --changelog --emptytree)"{-e,--emptytree}"[Only consider glibc as installed packages]"
    "($all --nospinner --pretend -p)"{-i,--inject}"[Portage thinks that this package is installed]"
    "($nopkg_opts $bopts)"{-f,--fetchonly}"[Just perform fetches for all packages]"
    "($nopkg_opts $bopts)"{-F,--fetch-all-uri}"[Fetch all possible files for all packages]"
    "($bopts)"{-g,--getbinpkg}"[Tells emerge to download binary package]"
    "($bopts)"{-G,--getbinpkgonly}"[As --getbinpkg, but does not use local info]"
    "($nopkg_opts)--noconfmem[Causes portage to disregard merge records]"
    "($nopkg_opts -O --nodeps)"{-O,--nodeps}"[Merges specified packages without merging dependencies]"
    "($nopkg_opts -n --noreplace)"{-n,--noreplace}"[Skip packages already installed]"
    "($nopkg_opts)"{-1,--oneshot}"[Do not add package to the world profile]"
    "($nopkg_opts --onlydeps -o)"{-o,--onlydeps}"[Only merge (or pretend to merge) the dependencies]"
    "($nopkg_opts --columns -t --tree)"{-t,--tree}"[Show dependency tree]"
    "($nopkg_opts --update -u)"{-u,--update}"[Updates packages to the most recent version available]"
    "($nopkg_opts --upgradeonly -U)"{-U,--upgradeonly}"[Do not update packages to a lower version]"
    "($bopts)"{-k,--usepkg}"[Tells emerge to use binary packages if available]"
    "($bopts --changelog -l)"{-K,--usepkgonly}"[Tells emerge to use binary packages only]"
    "($all)--clean[Cleans the system by removing packages]"
    "(: $all)"{-c,--depclean}"[Clean all packages that have no reason for being installed (see man!!!)]"
    "(: $all $noask_opts --nospinner --quiet -q)--info[This is a list of information to include in bug reports]"
    "(: -)--metadata[Generate metadata]"
    "($nopkg_opts --usepkgonly -K)--newuse[Include installed packages which have changed USE flags]"
    "($all)"{-P,--prune}"[Removes all but the latest versions of matching packages]"
    "(: $all $noask_opts --verbose -v)--regen[Causes portage to check and update the dependency cache]"
    "(: $all $noask_opts --verbose -v)"{-s,--search}"[Searches for matches]"
    "(: $all $noask_opts --verbose -v)"{-S,--searchdesc}"[Matches the seachdesc string against the description field]"
    "(: $all --pretend -p)--sync[Initiates a portage tree update]"
    "(: $all --pretend -p)--check-news[Scan all repositories for relevant unread GLEP 42 news items]"
    "($all)"{-C,--unmerge}"[Removes all matching packages]"
    '(: -)'{-V,--version}'[Display version info]'
    "(: $all[3,-1])--resume[Resumes the last merge operation]"
    "(: $all[3,-1])--skipfirst[Removes the first package in the resume list]"
  )
  profiles=(
    'world[All packages in the world profile]'
    'system[All packages in the system profile]'
  )


  # Dispatch
  if (( $words[(I)(--(unmerge|clean|prune|deselect)|-[[:alpha:]]#(C|c|P)[[:alpha:]]#)] )) ; then
	if compset -P '(\\|)(>=|<=|<|>|=)'; then
	    _arguments -s \
		'*:installed package:_gentoo_packages installed_versions' && return 0
	else
	    _arguments -s \
		"$common_args[@]" "$install_args[@]" \
		"*:installed package:_gentoo_packages installed" \
		"::installed sets:_gentoo_packages installed_sets" \
		&& return 0
	fi

  elif (( $words[(I)(world|system)] )) ; then  
    _arguments -s \
	"$common_args[@]" "$install_args[@]" \
	"($nopkg_opts[1,-2] --inject -i --oneshot -1):" && return 0

  elif (( $words[(I)(--usepkgonly|-[[:alnum:]]#K[[:alnum:]]#)] )) ; then
    _arguments -s \
	"$common_args[@]" "$install_args[@]" \
	'*:binary package:_gentoo_packages binary' && return 0

  else
	if compset -P '(\\|)(>=|<=|<|>|=)'; then
	    _arguments \
		"*:portage:_gentoo_packages available_versions" && return 0
	elif (( $words[(I)(--inject|-i)] )) ; then
	    _arguments -s \
		"$common_args[@]" "$install_args[@]" \
		"*:portage:_gentoo_packages available_versions" && return 0
	else
	    _arguments -s \
		"$common_args[@]" "$install_args[@]" \
		"($nopkg_opts)::portage: _values 'profile' \$profiles[@] " \
		"($nopkg_opts)*:portage:_gentoo_packages available" \
		"($nopkg_opts)::available sets:_gentoo_packages available_sets" \
		&& return 0
	fi
  fi
}


_emaint () {
    _arguments -s \
        "(: -)"{-h,--help}'[show help message and exit]' \
        "(: -)"--version"[show program's version number and exit]" \
        '(-c --check -f --fix)'{-c,--check}"[Check for any problems that may exist]:emaint:((all\:'check all' world\:'check only world file'))" \
        '(-c --check -f --fix)'{-f,--fix}"[Fix any problems that may exist]:emaint:((all\:'check all' world\:'check only world file'))"
}


_env-update () {
    _arguments -s '(: -)--no-ldconfig[Do not run ldconfig]'
}


_portageq () {
    local action

    action="$words[2]"

    if (( CURRENT == 2 )); then
        _values 'command'                                                                   \
            '--help[Show help]'                                                             \
            'config_protect_mask[Returns the CONFIG_PROTECT_MASK paths]'                    \
            'config_protect[Returns the CONFIG_PROTECT paths]'                              \
            'portdir[Returns PORTDIR paths]'                                                \
            'contents[List the files that are installed for a given package]'                \
            'vdb_path[Returns the path used for the var(installed) package database]'       \
            'gentoo_mirrors[Returns the mirrors set to use in the portage configuration]'   \
            'exithandler[MISSING DOCUMENTATION!]'                                           \
            'all_best_visible[Returns all best_visible packages (without .ebuild)]'         \
            'match[Returns a \n separated list of category/package-version]'                \
            'metadata[Returns metadata values for the specified package]'                   \
            'best_visible[Returns category/package-version (without .ebuild)]'              \
            'mass_best_visible[Returns category/package-version (without .ebuild)]'         \
            "has_version[Return code 0 if it's available, 1 otherwise]"                     \
            'envvar[Returns a specific environment variable as exists prior to ebuild.sh]'  \
            'pkgdir[Returns the PKGDIR path]'                                               \
            'best_version[Returns category/package-version (without .ebuild)]'              \
            'mass_best_version[Returns category/package-version (without .ebuild)]'         \
            'portdir_overlay[Returns the PORTDIR_OVERLAY path]'                             \
            'distdir[Returns the DISTDIR path]'                                             \
            'owners[print the packages that own the files and which files belong to each package]'
    elif (( CURRENT == 3 )); then
        if [[ "$action" =~ (contents|(all_|mass_|)best_visible|match|metadata|(has|best)_version|owners|mass_best_version) ]]; then
            _arguments -s '*:root:_files -g /'
        fi
    elif (( CURRENT > 3 )); then
        if [[ "$action" =~ ((mass_|)best_(visible|version)|has_version) ]]; then
            _arguments -s '*:package:_gentoo_packages available'
        elif [[ "$action" == owners ]]; then
            _arguments -s '*:root:_files'
        fi
    fi
}


_repoman () {
    local previous

    previous="$words[CURRENT-1]"

    _arguments -s \
       '(--force)'--force'[Force commit to proceed, regardless of QA issues]'                                                           \
       '(-q --quiet -v --verbose)'{-q,--quiet}'[Be less verbose about extraneous info]'                                                 \
       '(-p --pretend -m --commitmsg -M --commitmsgfile)'{-p,--pretend}'[Don’t commit or fix anything; just show what would be done]'   \
       '(-i --include-masked)'{-i,--include-masked}'[Include masked packages in scans at category or tree level]'                       \
       '(-x --xmlparse)'{-x,--xmlparse}'[Forces the metadata.xml parse check to be carried out]'                                        \
       '(-q --quiet -v --verbose)'{-v,--verbose}'[Displays every package name while checking]'                                          \
       '(-I --ignore-arches)'{-I,--ignore-arches}'[Ignore arch-specific failures (where arch != host)]'                                 \
       '(-m --commitmsg -M --commitmsgfile)'{-m,--commitmsg}'[Adds a commit message via the command line]:message:'                     \
       '(-m --commitmsg -M --commitmsgfile)'{-M,--commitmsgfile}'[Adds a commit message from the specified file]:commit_file:_files'    \
       '(: -)'{-V,--version}'[Show version info]'                                                                                       \
       '(: -)'{-h,--help}'[Show this screen]'

       # if we don't have an option that cancel action, or if we don't already have an action.
       if ! [[ "$previous" =~ (-h|-V|-m|-M|--version|--help|--commitmsg|--commitmsgfile) ]] &&
          ! (( $words[(I)(full|last|help|scan|fix|lfull|manifest|commit)] ));               then
            _values 'action'                                                \
               'full[Scan directory tree for QA issues (full listing)]'     \
               'last[Remember report from last run]'                        \
               'help[Show this screen]'                                     \
               'scan[Scan directory tree for QA issues (short listing)]'    \
               'fix[Fix simple QA issues (stray digests, missing digests)]' \
               'lfull[Remember report from last run (full listing)]'        \
               'manifest[Generate a Manifest (fetches files if necessary)]' \
               'commit[Scan directory tree for QA issues; if OK, commit via cvs]'
       fi
}


_tbz2tool () {
    if   (( CURRENT == 2 )); then
        _values 'action' 'join' 'split'
    elif (( CURRENT > 2 )) && (( CURRENT < 6 )); then
        _arguments -s '*:file:_files'
    fi
}


zparseopts -D -E -A Args -- -emerge
if (( ${+Args[--emerge]} ));then
	_emerge "$@" && return 0
fi

case "$service" in
	emerge)
		_emerge "$@" && return 0
		;;
	ebuild)
		_ebuild "$@" && return 0
		;;
	quickpkg)
		_quickpkg "$@" && return 0
		;;
	emaint)
		_emaint "$@" && return 0
		;;
	env-update)
		_env-update "$@" && return 0
		;;
	portageq)
		_portageq "$@" && return 0
		;;
	repoman)
		_repoman "$@" && return 0
		;;
	tbz2tool)
		_tbz2tool "$@" && return 0
		;;
esac