do-release

#!/bin/bash

# Returns 1 if the current git branch is dirty, else 0
function git_is_dirty {
  [[ $(git diff --shortstat 2> /dev/null | tail -n1) != "" ]] && echo 1 || echo 0
}

# Returns the number of untracked files
function git_has_untracked_files {
  expr `git status --porcelain 2>/dev/null| grep "^??" | wc -l`
}

function get_next_version {
    $MAJOR=$1
    $MINOR=$2
    $REV=$(expr $3 + 1)
    echo "$MAJOR.$MINOR.$REV"
    echo "$MAJOR.$MINOR.$REV"
}

CURRENT_VERSION=$(grep "version='[0-9].[0-9].[0-9]'" setup.py | grep -o '[0-9].[0-9].[0-9]')
CV=( ${CURRENT_VERSION//./ } )
CURRENT_MAJOR=${CV[0]}
CURRENT_MINOR=${CV[1]}
CURRENT_REV=${CV[2]}

NEXT_MAJOR=$CURRENT_MAJOR
NEXT_MINOR=$CURRENT_MINOR
NEXT_REV=`expr $CURRENT_REV + 1`
if [ $NEXT_REV -gt 9 ]; then
    NEXT_MINOR=`expr $NEXT_MINOR + 1`
    NEXT_REV=0
    if [ $NEXT_MINOR -gt 9 ]; then
        NEXT_MINOR=0
        NEXT_MAJOR=`expr $NEXT_MAJOR + 1`
    fi
fi
NEXT_VERSION="$NEXT_MAJOR.$NEXT_MINOR.$NEXT_REV"
BRANCH="release_${NEXT_MAJOR}_${NEXT_MINOR}"

echo "You are about to build and publish version $NEXT_VERSION"
read -sn 1 -p "Press any key to continue..."
echo

# Make sure we are in sync with remote
git checkout -q master && git fetch -q && git pull -q

# Verify that there is nothing to commit
if [ $(git_is_dirty) -eq 1 ]; then
    git status
    echo
    echo -e " [error] Hey dumbass, commit your shit.. Abort !\n\n"
   #exit 1
fi

# Verify that there is no untracked files
if [ $(git_has_untracked_files) -gt 0 ]; then
    git status
    echo
    echo -e " [error] I see untracked files, you dirty bastard.. Abort !\n\n"
    exit 1
fi

echo " [info] Bumping version"
sed -i -e "s/    version='"$CURRENT_VERSION"',/    version='"$NEXT_VERSION"',/" setup.py
git commit -aqm "Version bump: $CURRENT_VERSION -> $NEXT_VERSION @wip"
git push -q

echo " [info] Creating tag v$NEXT_VERSION"
git tag -s "v$NEXT_VERSION" -m "Release $NEXT_VERSION"
git push --tags origin "v$NEXT_VERSION"

echo " [info] Updating changelog"
if [ ! -d "./venv" ]; then
    virtualenv venv
fi
./venv/bin/pip install -q gitchangelog
./venv/bin/gitchangelog > changelog
rm -rf venv
git add changelog
git commit -qm "Updated changelog @wip"
git push -q

# check if a git branch exists for the current major_minor release (ex: release_1_0)
if [ `git branch --list $BRANCH` ]; then # if not, create one.
    echo " [info] UPDATING release branch $BRANCH"
    git checkout -q $BRANCH
    git merge -q origin/master
else
    echo " [info] CREATING release branch $BRANCH"
    git checkout -q -b $BRANCH
fi
git push -q --set-upstream origin $BRANCH > /dev/null
git checkout -q master

echo " [info] Pushing to PyPi"
python setup.py sdist build upload

echo " [done] Published release v$NEXT_VERSION"
echo
exit 0