~launchpad-pqm/launchpad/devel

#!/bin/bash

#

# Copyright 2009 Canonical Ltd.  This software is licensed under the

# GNU Affero General Public License version 3 (see the file LICENSE).

#

# Update bzr-version-info.py -- but only if the revision number has

# changed

#

if ! which bzr > /dev/null || !  test -x $(which bzr); then

    echo "No working 'bzr' executable found"

    exit 1

fi

newfile=bzr-version-info-${RANDOM}.py

bzr version-info --format=python > $newfile 2>/dev/null;

# There's a leading space here that I don't care to trim.. 

revno=$(python $newfile | grep revision: | cut -d: -f2)

if ! [ -f bzr-version-info.py ]; then

    echo "Creating bzr-version-info.py at revno$revno"

    mv ${newfile} bzr-version-info.py

else

    # Here we compare the actual output instead of the contents of the

    # file because bzr includes a build-date that is actually updated

    # every time you run bzr version-info.

    newcontents=$(python $newfile)

    oldcontents=$(python bzr-version-info.py)

    if [ "$newcontents" != "$oldcontents" ]; then

        echo "Updating bzr-version-info.py to revno$revno"

        mv ${newfile} bzr-version-info.py

    else

        echo "Skipping bzr-version-info.py update; already at revno$revno"

        rm ${newfile}

    fi

fi