Switch between zeroc-ice33 and zeroc-ice34 formulae

ice_switch.sh

# See Formula in https://github.com/joshmoore/homebrew/tree/omero-only
#
# Use: git remote add omero [email protected]:joshmoore/homebrew.git
#      git fetch omero
#      git merge omero/omero-only
#
ice33() {
    VERSION=`slice2java --version 2>&1`
    if [[ "$VERSION" != "3.3.1" ]];
    then
        brew unlink zeroc-ice34
        brew link zeroc-ice33
    fi

    export HOMEBREW=/usr/local
    export ICE_HOME=`$HOMEBREW/bin/brew --prefix zeroc-ice33`
    export SLICE_HOME=$ICE_HOME/slice
    echo $ICE_HOME
    export DYLD_LIBRARY_PATH=$ICE_HOME/lib:$ICE_HOME/python:$DYLD_LIBRARY_PATH
    export PYTHONPATH=$ICE_HOME/python:$PYTHONPATH:/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/PyObjC/
}

ice34() {
    VERSION=`slice2java --version 2>&1`
    if [[ "$VERSION" != "3.4.2" ]];
    then
        brew unlink zeroc-ice33
        brew link zeroc-ice34
    fi

    export HOMEBREW=/usr/local
    export ICE_HOME=`$HOMEBREW/bin/brew --prefix zeroc-ice34`
    export SLICE_HOME=$ICE_HOME/slice
    echo $ICE_HOME
    export DYLD_LIBRARY_PATH=$ICE_HOME/lib:$ICE_HOME/python:$DYLD_LIBRARY_PATH
    export PYTHONPATH=$ICE_HOME/python:$PYTHONPATH:/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/PyObjC/
}