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Rakeの補完をキャッシュする in zsh

Last updated at Posted at 2013-02-18

rakeのサブコマンドの補完がとにかく遅いと思う。

http://weblog.rubyonrails.org/2006/3/8/fast-rake-task-completion-for-zsh/ が動かなかったので作ってみた。GemfileかRakefileが更新されたらキャッシュ更新するようになってる。

_cachefile_updated_at() {
  echo $(stat .rake_tasks -c%Y)
}

_rakefile_updated_at() {
  echo $(stat Rakefile -c%Y)
}

_gemfile_updated_at() {
  echo $(stat Gemfile -c%Y)
}

_generate_cachefile() {
  rake --silent --tasks 2> /dev/null | cut  -f 2 -d " " > .rake_tasks
}

_rake() {
  if [ -f Rakefile ]; then
    if [ ! -f .rake_tasks ] || \
       [ "`cat .rake_tasks | wc -l`" = "0" ] || \
       [ `_cachefile_updated_at` -lt `_rakefile_updated_at` ] || \
       [ -f Gemfile -a `_cachefile_updated_at` -lt `_gemfile_updated_at` ]; then
      _generate_cachefile
    fi
    compadd `cat .rake_tasks`
  fi
}

compdef _rake rake

追記

BSDのstat使ってる場合は stat -f%m Gemfile で更新時刻取れるようです。coreutilsで入れてるの使ってることに気づきませんでした。

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