bash function to set gopath automatically if you are already under a src dir

script.bash

# often times I find myself doing a `go build` and then realizing that this project has a different GOPATH
# I call the below bash function I am in the go code dir.
# It will get the pwd and set the GOPATH automatically to the folder in which there is a "/src/" 
# depending on whether you are on linux or mac, you can simplify the sed to use the extended options -r or -e respectively, but I've kept it universal for now
function setgopath() {
    pwd=`pwd`
    newGoPath=`echo $pwd | sed 's/\(.*\)\/src\/.*/\1/'`

    if [ -z $newGoPath ]; then
        echo "GOPATH not changed"
    else
        export GOPATH=$newGoPath
    fi
    echo "GOPATH="$GOPATH
}