release.sh

#!/usr/bin/env bash

TMPFILE=$(mktemp)
trap "rm $TMPFILE" exit

set -x
set -e

error_and_exit() {
    echo -e "$(basename $0): $1"
    exit 1
}

if [ -z "$VERSION" ]; then
    error_and_exit "VERSION environment variable must be set"
fi

if [ -z "$OPAM_REPOSITORY" ]; then
    OPAM_REPOSITORY=../../../opam-repository
    PACKAGES=$OPAM_REPOSITORY/packages
    stat "$PACKAGES" &> /dev/null
    if [ ! $? ]; then
        error_and_exit "OPAM_REPOSITORY environment variable must be the path to an opam repository"
    fi
fi

PROJECT_NAME=$(basename $(pwd))
BRANCH=$(git rev-parse --abbrev-ref HEAD)
if [ $BRANCH != "release" ]; then
    error_and_exit "release must be done from \"release\" branch"
fi

prepare() {
    local package_name=$1
    local package=$PACKAGES/$package_name/$package_name.$VERSION
    local archive="https://github.com/inhabitedtype/$PROJECT_NAME/archive/$VERSION.tar.gz"
    local checksum
    curl -L -f $archive 2>/dev/null > $TMPFILE
    if [ $? != 0 ]; then
        error_and_exit "source tarball does not exist"
    fi
    checksum=$(md5 -q < $TMPFILE)
    mkdir -p $package
    cat <(git show HEAD^:$package_name.opam) - <<EOF > $package/opam
url {
  src: "$archive"
  checksum: "md5=$checksum"
}
EOF
}

brand() {
    echo $TMPFILE
    for opam_file in *.opam; do
        cat <<<"version: \"$VERSION\"" - $opam_file > $TMPFILE
        cp $TMPFILE $opam_file
        opam lint $opam_file || exit 1
    done
    git commit -a -m "release: $VERSION"
    git tag $VERSION
    git push -f origin release
    git push --tags
}

release() {
    brand
    for opam_file in *.opam; do
        name=${opam_file%%.opam}
        prepare $name
        (cd $PACKAGES && git add $name)
    done
    name=${PROJECT_NAME##ocaml-}
    (cd $OPAM_REPOSITORY && git checkout -b "$name.$VERSION" master && git commit -m "+$name.$VERSION" && git push origin "$name.$VERSION")
}

release