com.robrecord.brewupgrade

#!/bin/sh

# Upgrade homebrew packages including multiple versions of PHP without the linking/unlinking headache!

# Update package list

brew update

# Upgrade PHP packages

phpcurrent=$(readlink /usr/local/bin/php | xargs dirname | xargs dirname | xargs dirname | xargs basename 2>&1)

newline="
"

IFS=$newline phpinstalled=( $(brew list | grep '^php\d\d$') )

brew unlink ${phpinstalled[@]}

for phpversion in ${phpinstalled[@]}
do
	IFS=$newline packages=( $(brew outdated --quiet | grep "$phpversion$") )
	if [[ $packages ]]
	then
		brew link $phpversion
		for package in ${packages[@]}
		do
			brew upgrade `basename $package`
		done
		brew unlink $phpversion
	fi
done

if [[ $phpcurrent ]]
then
	brew link $phpcurrent
fi

# Upgrade everything else

brew upgrade

# Clean up

brew cleanup