~chasedouglas/geis/fix-deltas

#!/bin/sh

#

# Tool to automatically generate the package version from the bzr tags.

#

# This tool generates a package version string based on the tags in the bzr

# branch.  When an official release is made, the branch should be tagged with a

# tag of the form 'vN.N.N'.  This script will then give a version string of

# 'N.N.N'.  If any changes are made to the barcnh after tagging, the version

# string will be of the form 'N.N.N+rRRR' where RRR is the bzr revno of the

# latest commit.

#

# This scheme allows snapshot releases to be packaged.

#

# Copyright 2011 Canonical Ltd.

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Default to some unknown version string.

version_string="unknown"

# Get the cirrent BZR revision number.

cur_bzr_rev=$(bzr version-info --custom --template="{revno}")

# Extract the release version string and BZR revision number.

tag_line=$(bzr tags --sort=time \

         | grep -E 'v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+' \

         | tail -1)

tag_version=$(echo $tag_line | sed -n -e 's/v\([^[:space:]]*\).*/\1/p')

tag_rev=$(echo $tag_line | cut -d' ' -f2-)

if [ -n "$tag_version" ]; then

  version_string=$tag_version

fi

if [ $cur_bzr_rev -gt $tag_rev ]; then

  version_string="${version_string}+r${cur_bzr_rev}"

fi

echo $version_string