_pip

#compdef pip

local ret=1 state

declare -ga common_ops
common_ops=(
  "--version[display version number]"
  {-h,--help}"[show help]"
  {-E,--environment=}"[virtualenv environment to run pip]:environment:_directories"
  {-s,--enable-site-packages}"[include site-packages in virtualenv]"
  {-v,--verbose}"[give more output]"
  {-q,--quiet}"[give less output]"
  "--log=[log file where a complete record will be kept]"
  "--proxy=[specify a proxy in the form user:passwd@proxy.server:port]:proxy"
  "--timeout=[set the socket timeout (default 15 seconds)]:second"
)

_directories () {
  _wanted directories expl directory _path_files -/ "$@" -
}

typeset -A opt_args
_arguments \
  ':subcommand:->subcommand' \
  $common_ops \
  '*::options:->options' && ret=0

case $state in
  subcommand)
    subcommands=(
      "bundle:create pybundle"
      "freeze:put all currently installed packages"
      "help:show available commands"
      "install:install packages"
      "search:search pypi"
      "usinstall:uninstall packages"
      "unzip:unzip undividual packages"
      "zip:zip dividual packages"
    )

    _describe -t subcommands 'pip subcommand' subcommands && ret=0
  ;;

  options)
    declare -a args
    args=(
      $common_ops
    )

    declare -a requirement
    requirement=(
      {-r,--requirement=}"[install all the packages listed in the given requirements file]:filename"
    )

    declare -a findlink
    findlink=(
      {-f,--find-links=}"[URL to look for packages at]:url"
    )

    case $words[1] in
      bundle | install)
        args+=(
          {-e,--editable=}"[install a package directly from a checkout]:VCS+REPOS_URL[@REV]#egg=PACKAGE"
          $requirement
          $findlink
          {-i,--index-url=,--pypi-url=}"[base URL of Python Package Index]:URL"
          "--extra-index-url=[extra URLs of package indexes to use]:URL"
          {-b,--build=,--build-dir=}"[unpack packages into DIR]:directory:_directories"
          {--src=,--source=}"[check out --editable packages into DIR]:directory:_directories"
          {-U,--upgrade}"[upgrade all packages to the newest available version]"
          {-I,--ignore-installed}"[ignore the installed packages]"
          "--noinstall[download and unpack all packages, but don't actually install them]"
          "--install-option=[extra arguments to be supplied to the setup.py install command]"
        )
      ;;

      freeze)
        args+=(
          $requirement
          $findlink
        )
      ;;

      unzip | zip)
        args+=(
          "--unzip[unzip a package]"
          "--no-pyc[do not include .pyc files in zip files]"
          {-l,--list}"[list the packages available, and their zip status]"
          "--sort-files[with --list, sort packages according to how many files they contain]"
          "--path=[restrict operation to the given paths]:paths"
          {-n,--simulate}"[do not actually perform the zip/unzip operation]"
        )
      ;;
    esac

    _arguments $args && ret=0
  ;;
esac

return ret