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executable file 40 lines (36 sloc) 1.008 kb
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#!/bin/sh

# Generate a version string for use when building.
#
# If RELEASE exists, and is non-empty, use the contents of that file.
# This is in case we're building from a tarball.
#
# If we're inside a git tree:
#
# - For the "devel" branch, generate a "devel-date-hash" version.
#
# - For other branches, use "git describe". This should result in a
# clean version for the tagged releases on "master", and a
# version-revision on the packaging tags.
#
# If we're still looking for a version, use "unknown".

current_git_branch() {
    git branch | awk '$1 == "*" {print $2}'
}

generate_version_string() {
    branch="$(current_git_branch)"
    case "${branch}" in
        master)
            git describe
            ;;
        *)
            git log -n 1 --pretty="${branch}-%ad-%tc" --date=short
            ;;
    esac
}

if [ -s "RELEASE" ]; then
    cat RELEASE
elif [ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = "true" ]; then
    generate_version_string
else
    echo "unknown"
fi
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