rewrite tag-release.sh for git

[nvcleemp]

Currently this script works for subversion. It should be rewritten for git.

It should verify that the tag doesn't already exist. Some sample code that could be helpful is this:

#!/bin/bash

set -e #fail on error

tag_already_exists() {
    echo Verifying tag does not exist: "$1"
    if git show-ref --tags --quiet --verify -- "refs/tags/$1"
    then
        echo Git tag "$1" already exists locally....
        return 0
    else
        echo Git tag "$1" does not yet exist....
        return 1
    fi
}

if ! tag_already_exists $2
then
    echo OK
else
    echo Error
fi

or

git ls-remote --tags 2>/dev/null | grep "refs/tags/2013-05-28$"

It should also verify that the current repository is not behind or diverged from the origin. If this is the case, than a pull should be done first. If the current repository is behind, than this is not a problem. Some useful information might be here: http://stackoverflow.com/questions/3258243/git-check-if-pull-needed

[nvcleemp]

The steps necessary to create a release are simple:

• check that you are in a clean working copy, i.e., no changes that are not yet committed, and that the current version is indeed the version you want to release.
• A release is named after the date on which it is released in the format YYYY-MM-DD.
• Run the following command in the local working copy git tag -a YYYY-MM-DD -m "Tagging version YYYY-MM-DD"
• Run make source-distribution
• Run make distribution and rename CaGe-dist.zip to CaGe.zip
• Copy these two archives to the website and update the changelog
• Push the tags to Github using git push --tags