convert-to-gomod.sh

#!/usr/bin/env bash
set -euo pipefail
travis_file=$(cat travis.example.yml)

## do_convert() performs the conversion. It can be called with an optional argument: the module to start with.
do_convert() {
    modules=()
    for d in $(find . -maxdepth 1 -mindepth 1 -type d | sort)
    do
        if [[ "$d" < ${1:-} ]]; then
            echo "skipping $d"
            continue
        fi
        pushd "$d" > /dev/null
        if ! git tag -l | grep -q -E "^v0.0.1"; then
            ## only convert this module if it hasn't been converted yet.
			modules+=("$(basename "./$d")")
        fi
        popd > /dev/null
    done

    for mod in "${modules[@]}"
    do
        echo ""
        echo "**********************************************"
        echo " Processing: $mod"
        echo "**********************************************"
        echo ""

        pushd "$mod" > /dev/null
        git checkout master
        git reset --hard
        git pull --rebase origin master
        git branch -D gomod || true
        git checkout -b gomod
        rm -rf go.mod go.sum
        GO111MODULE=on go mod init "github.com/ipfs/$mod"
        go build ./...
        go mod tidy
        go mod verify
        echo "$travis_file" > .travis.yml
		if ! grep -q -E '\sgithub.com/(ipfs|libp2p).* v0.0.0' go.mod; then
            echo ""
            echo "------------------------------------------------------------"
            echo " module $mod looks ready; branching, committing and tagging."
            echo "------------------------------------------------------------"
            echo ""

            git add go.mod .travis.yml || true   # go.sum might not exist if the module imports nothing
            if [[ -f go.sum ]]; then
                git add go.sum
            fi
            git commit -m "add gomod support // tag v0.0.1."
            git --no-pager log --oneline -n 10

            push=""
            read -r -n1 -p "push and tag? [y/n] " push
            if [[ "$push" != "y" ]]; then
                popd > /dev/null
                continue
            fi

            git push origin gomod
			hub pull-request --no-edit
            git tag "v0.0.1" || true
            git push origin "refs/tags/v0.0.1"
        fi
        popd > /dev/null
    done
}

do_convert "$@"