Script to set gradle's jvm to Java 8 inside IntelliJ installations on Mac OS X.

intellij_gradle_java8.sh

#!/bin/bash
# You can run it by copying and pasting the following on your terminal:
# curl "https://gist.githubusercontent.com/alcarvalho/26fb041de96f6cf30e91/raw/intellij_gradle_java8.sh" | bash

function die() {
  echo $1
  exit 1
}

function get_java8_home() {
  LIBEXEC_JAVA_HOME=$(which java_home || echo /usr/libexec/java_home)
  test -x $LIBEXEC_JAVA_HOME || die "Could not find java_home. It should live in /usr/libexec/java_home"
  JAVA8_HOME=$($LIBEXEC_JAVA_HOME -v 1.8)
  echo $JAVA8_HOME
}

function patch_idea_properties() {
  prop_file=$1
  echo "Patching $prop_file..."
  if [ -z $(grep gradle.java.home $prop_file) ] ; then
    echo "Backing up..."
    cp $prop_file $prop_file~
    echo "gradle.java.home=$JAVA8_HOME" >> $prop_file
    echo "Done."
  else
    echo "Nothing to be done here."
  fi
}

JAVA8_HOME=${JAVA8_HOME-$(get_java8_home)}

test -z "$JAVA8_HOME" && die "JAVA8_HOME is not set and I have failed to auto set it"

echo "Finding IntelliJ installations and patching them..."
SAVEIFS=$IFS
IFS=$(echo -en "\n\b")
for f in /Applications/{Android\ Studio*,Intelli*}.app ; do
  echo "Found $f"
  idea_props=$(find "$f" -name idea.properties | head -n 1)
  patch_idea_properties $idea_props
done
IFS=$SAVEIFS
echo "All done."