if [ -n "$BASH_VERSION" ]; then
    command -v xargs > /dev/null || { echo >&2 "ERROR: xargs program not available."; }

    if [ "`uname`" = "Darwin" ]; then
        export TGC_HAMMER_HOME=`dirname ${BASH_SOURCE[0]} | xargs cd | pwd`
    else
        command -v realpath > /dev/null || command -v readlink > /dev/null ||  { echo "ERROR: neither realpath nor readlink programs are available."; }
        command -v xargs > /dev/null && command -v realpath > /dev/null && export TGC_HAMMER_HOME=`dirname ${BASH_SOURCE[0]} | xargs realpath`
        command -v xargs > /dev/null && command -v readlink > /dev/null && export TGC_HAMMER_HOME=`dirname ${BASH_SOURCE[0]} | xargs readlink -f`
    fi
elif [ -n "$ZSH_VERSION" ]; then
    command -v realpath > /dev/null || command -v readlink > /dev/null ||  { echo "ERROR: neither realpath nor readlink programs are available."; }
    command -v xargs > /dev/null && command -v realpath > /dev/null && export TGC_HAMMER_HOME=`dirname ${(%):-%x} | xargs realpath`
    command -v xargs > /dev/null && command -v readlink > /dev/null && export TGC_HAMMER_HOME=`dirname ${(%):-%x} | xargs readlink -f`
else
    echo "ERROR: unknown shell"
    exit
fi


if [ -f "source.sh" ]; then
    echo "Directory already seems to be workspace."
elif [ -f "init-workspace.sh" ]; then
    echo "Cannot create workspace in TGC-Hammer directly, use different directory."
else
    echo "Creating workspace ..."
    echo "export TGC_HAMMER_HOME=\"${TGC_HAMMER_HOME}\"" > source.sh
    echo "export TGC_HAMMER_WORKDIR=\"$PWD\"" >> source.sh
    echo "export PATH=\"${TGC_HAMMER_HOME}/toolflow/target/universal/stage/bin:$PATH\"" >> source.sh

    cp -r ${TGC_HAMMER_HOME}/wsTemplate/. $PWD

    mkdir -p output
fi