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add: rbenv plugin

Peter Hoeg authored on 20/10/2011 at 06:12:56
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+FOUND_RBENV=0
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+for rbenvdir in "$HOME/.rbenv" "/usr/local/rbenv" "/opt/rbenv" ; do
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+  if [ -d $rbenvdir/bin -a $FOUND_RBENV -eq 0 ] ; then
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+    FOUND_RBENV=1
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+    export RBENV_ROOT=$rbenvdir
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+    export PATH=${rbenvdir}/bin:$PATH
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+    eval "$(rbenv init -)"
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+
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+    alias rubies="rbenv versions"
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+    alias gemsets="rbenv gemset list"
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+
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+    function current_ruby() {
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+      echo "$(rbenv version-name)"
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+    }
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+
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+    function current_gemset() {
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+      echo "$(rbenv gemset active 2&>/dev/null | sed -e ":a" -e '$ s/\n/+/gp;N;b a') | head -n1"
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+    }
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+
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+    function gems {
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+      local rbenv_path=$(rbenv prefix)
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+      gem list $@ | sed \
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+        -Ee "s/\([0-9\.]+( .+)?\)/$fg[blue]&$reset_color/g" \
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+        -Ee "s|$(echo $rbenv_path)|$fg[magenta]\$rbenv_path$reset_color|g" \
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+        -Ee "s/$current_ruby@global/$fg[yellow]&$reset_color/g" \
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+        -Ee "s/$current_ruby$current_gemset$/$fg[green]&$reset_color/g"
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+    }
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+
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+    function rbenv_prompt_info() {
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+      if [[ -n $(current_gemset) ]] ; then
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+        echo "$(current_ruby)@$(current_gemset)"
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+      else
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+        echo "$(current_ruby)"
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+      fi
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+    }
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+  fi
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+done
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+unset rbenvdir
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+
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+if [ $FOUND_RBENV -eq 0 ] ; then
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+  alias rubies='ruby -v'
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+  function gemsets() { echo 'not supported' }
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+  function rbenv_prompt_info() { echo "system: $(ruby -v | cut -f-2 -d ' ')" }
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+fi