#compdef pkg_add pkg_create pkg_delete pkg_info

(( $+functions[_bsd_pkg_pkgfiles] )) ||
_bsd_pkg_pkgfiles() {
  local ret=1 paths portsdir pkgsdir

  case $OSTYPE in
  netbsd*)
    portsdir=/usr/pkgsrc
    ;;
  *)
    portsdir=${PORTSDIR:-/usr/ports}
    ;;
  esac

  pkgsdir=${PACKAGES:-$portsdir/packages}/All

  paths=( "${(@)${(@s.:.)PKG_PATH}:#}" )
  _files "$@" -g '*.t[bg]z' && ret=0
  (( $#path )) && _files "$@" -W paths -g '*.t[bg]z' && ret=0
  compadd "$@" - $pkgsdir/*.t[bg]z && ret=0

  return ret
}

(( $+functions[_bsd_pkg_pkgs] )) ||
_bsd_pkg_pkgs() {
  compadd "$@" - ${PKG_DBDIR:-/var/db/pkg}/*(/:t)
}

(( $+functions[_bsd_pkg_pkgs_and_files] )) ||
_bsd_pkg_pkgs_and_files() {
  local ret=1

  if (( $words[(I)-*F*] )); then
    _files "$@" && ret=0
  else
    _bsd_pkg_pkgs "$@" && ret=0
  fi

  return ret
}

_bsd_pkg() {
  local flags

  case "$service" in
  pkg_add)
    flags=(
      '-f[force installation]'
      '-I[don'\''t execute installation scripts]'
      '-M[run in master mode]'
      '-n[don'\''t really install packages]'
      '-p[specify prefix]:prefix directory:_files -/'
      '-R[don'\''t record]'
      '-S[run in slave mode]'
      '-t[specify mktemp template]:mktemp template:_files -/'
      '-v[be verbose]'
    )

    case "$OSTYPE" in
    freebsd*)
      flags=(
        $flags[@]
        '-r[fetch from remote site]'
      )
      ;;
    netbsd*)
      flags=(
	$flags[@]
	'-u[update]'
	'-V[show version and exit]'
      )
      ;;
    esac

    _arguments -s \
      $flags[@] \
      '*:package to install:_bsd_pkg_pkgfiles'
    ;;

  pkg_create)
    case "$OSTYPE" in
    freebsd*)
      flags=(
	'-f[specify plist file]:plist file:_files'
	'(-b)-c[specify comment file]:comment file:_files'
	'(-b)-d[specify descr file]:descr file:_files'
	'-Y[assume YES for any questions asked]'
	'-N[assume NO for any questions asked]'
	'(-b)-O[packing list only mode]'
	'-v[be verbose]'
	'-h[force tar to follow symlinks]'
	'(-b)-i[specify pre-install script]:pre-install script:_files'
	'(-b)-I[specify post-install script]:post-install script:_files'
	'(-b)-P[specify initial dependencies]:dependencies:_bsd_pkg_pkgs'
	'(-b)-p[specify prefix]:prefix directory:_files -/'
	'(-b)-k[specify deinstall script]:deinstall script:_files'
	'(-b)-K[specify post-deinstall script]:post-deinstall script:_files'
	'(-b)-r[specify req script]:req script:_files'
	'(-b)-s[specify source directory]:source directory:_files -/'
	'(-b)-t[specify mktemp template]:mktemp template:_files'
	'(-b)-X[specify exclude file]:exclude file for tar:_files'
	'(-b)-D[specify message file]:message file:_files'
	'(-b)-m[specify mtree file]:mtree file:_files'
	'(-b)-o[specify origin]:origin:_files -W ${PORTSDIR\:-/usr/ports} -/'
	'-j[use bzip2]'
	'-z[use gzip]'
	'(-c -d -O -i -I -P -p -k -K -r -s -t -X -D -m -o)-b[specify pkgname]:pkgname:_bsd_pkg_pkgs'
	'*:package file name:_files'
      )
      ;;
    netbsd*)
      # NetBSD users, improve me!
      flags=(
	'*:package name:_bsd_pkg_pkgs'
      )
      ;;
    esac

    _arguments -s \
      $flags[@]
      ;;

  pkg_delete)
    flags=(
      '-D[don'\''t execute deinstallation scripts]'
      '-d[remove empty directories]'
      '-f[force deinstallation]'
      '-n[don'\''t really deinstall packages]'
      '-p[specify prefix]:prefix directory:_files -/'
      '-v[be verbose]'
    )

    case "$OSTYPE" in
    freebsd*)
      flags=(
        $flags[@]
	'(:)-a[delete all installed packages]'
        '-G[do not expand glob patterns]'
	'-i[be interactive]'
        '-r[delete recursively]'
        '-x[use regular expression]'
      )
      ;;
    netbsd*)
      flags=(
	$flags[@]
	'(:)-a[delete all installed packages]'
	'-F[specify each package by an installed file]'
	'-i[be interactive]'
	'-O[only delete the package'\''s entries]'
        '-R[delete upward recursively]'
        '-r[delete recursively]'
	'-V[show version and exit]'
      )
      ;;
    esac

    _arguments -s \
      $flags[@] \
      '(-a)*:package name:_bsd_pkg_pkgs_and_files'
    ;;

  pkg_info)
    flags=(
      '(:)-a[show all installed packages]'
      '-c[show comment fields]'
      '-D[show install-message files]'
      '-d[show long descriptions]'
      '-e[test if package is installed]:package name:_bsd_pkg_pkgs'
      '-f[show packing list instructions]'
      '-I[show index lines]'
      '-i[show install scripts]'
      '-k[show deinstall scripts]'
      '-L[show full pathnames of files]'
      '-l[specify prefix string]:prefix string:'
      '-m[show mtree files]'
      '-p[show installation prefixes]'
      '-q[be quiet]'
      '-R[show list list of installed requiring packages]'
      '-r[show requirements scripts]'
      '-v[be verbose]'
    )

    case "$OSTYPE" in
    freebsd*)
      flags=(
        $flags[@]
        '-G[do not expand glob patterns]'
	'-g[show files that'\''s modified]'
	'-o[show origin]'
	'-s[show total size occupied by each package]'
	'-t[specify mktemp template]:mktemp template:_files -/'
	'*-W[show which package the file belongs to]:file:_files'
	'-x[use regular expression]'
      )
      ;;
    netbsd*)
      flags=(
	$flags[@]
	'-B[show build information]'
	'-b[show RCS Id strings]'
	'-F[specify each package by an installed file]'
	'-S[show total size occupied by each package and its dependents]'
	'-s[show total size occupied by each package]'
	'-V[show version and exit]'
      )
      ;;
    esac

    _arguments -s \
      $flags[@] \
      '(-a)*:package name:_bsd_pkg_pkgs_and_files'
    ;;
  esac
}

_bsd_pkg "$@"