tag-build

#!/bin/bash

# Load configuration and utility functions.
source freenet-scripts-common || exit

cd "$fredDir"

DIFF="$(git diff)"
if [[ -n "$DIFF" ]]; then
    echo "$DIFF"
    echo There are modified files. Please commit or stash them.
    exit 1
fi

# Testnet is a separate source repository, so we need to check for it.
# TODO we should have --testnet switches on the scripts.
if grep TESTNET src/freenet/node/Version.java ; then
    echo This appears to be a testnet build because freenet.node.Version contains "TESTNET".
    echo Testnet builds are not suitable for release as a normal build.
    exit 2
fi

BUILD=$1
if [[ -z $BUILD ]]; then
	echo Usage: tag-build 1234
	echo 1234 is the build number.
	exit 3
fi

if ! grep "buildNumber = $BUILD;" src/freenet/node/Version.java ; then
    echo src/freenet/node/Version.java does not contain the requested build number.
    echo Please update the build number, as well as - if desired - the mandatory date.
    exit 4
fi

TAG=$(printf 'build%05d' "$BUILD")
PREVBUILD=$(($BUILD-1))
PREVTAG=$(printf 'build%05d' "$PREVBUILD")

FULLCHANGELOG=$releaseDir/changelog.full.$TAG.txt
CHANGELOG=$releaseDir/changelog.short.$TAG.txt

echo Releasing build $TAG
echo Previous build was $PREVTAG

# Don't overwrite an existing changelog.
if [ ! -e "$FULLCHANGELOG" ]; then
cat - > "$FULLCHANGELOG" <<EOF
$(date '+%F')

Changes in $BUILD:

[enumerate developer-facing changes]

- Release manager name

[include shortlogs of any installer or plugin changes]

---
$(git shortlog --no-merges "$PREVTAG..")
EOF
fi
editor $FULLCHANGELOG || exit 10
if [ ! -e "$CHANGELOG" ]; then
# TODO: 0.7.5 shouldn't be hardcoded in multiple places.
cat > "$CHANGELOG" <<EOF
$(date '+%F')

Freenet 0.7.5 build $BUILD is now available. [overview]

[enumerate user-facing changes]

Thank you for using Freenet!

- Release manager name
EOF
fi
editor $CHANGELOG || exit 11

# Temporary file to hold developer changelog, user-facing changelog, and contributing authors.
TEMP="$(mktemp)"

# Remove temporary file on exit.
function cleanup {
    rm "$TEMP"
}
trap cleanup EXIT

cat "$CHANGELOG" > "$TEMP"
echo >> "$TEMP"
echo "Developer changelog:" >> "$TEMP"
echo >> "$TEMP"
cat "$FULLCHANGELOG" >> "$TEMP"

echo
echo Combined changelog as will be tagged:
echo
cat "$TEMP"
echo

require "Tag as $TAG?"

# Tag with the message, and push the tags and changes.
git tag "$gitSign" "$TAG" -F "$TEMP" || exit 8

git push origin "$TAG"

echo "$TAG" > "$releaseDir/freenet.tag" || exit 6
echo "$BUILD" > "$releaseDir/freenet.build" || exit 6

# TODO: test vs. [ ] or [[ ]]?
# Get the name of the active branch. TODO: More idiomatic?
BRANCH="$(git branch | grep "^\*" | cut -b 3-)"

if test $BRANCH != "master" && test $BRANCH != "next"; then
	# Common case: Releasing from a branch, e.g. stable-9999, fixes
	echo "Merging active branch $BRANCH back into master."
	git checkout master
	git merge -S --ff-only $TAG || exit 7

	# Then offer to delete it.
	echo "Delete branch $BRANCH? [y/N]"
	read x
	if [[ $x == "y" ]]; then
		git branch -d $BRANCH
		git push origin :$BRANCH
		echo Deleted branch $BRANCH
	else
		git checkout $BRANCH
	fi

	# Merge master into next.
	git checkout next
	git merge -S master
elif test $BRANCH == "next"; then
	# Releasing from next.
	# Merge next into master.
	git checkout master
	git merge -S next
fi

# Push changes and end on next.
git push origin next
git push origin master

git checkout next