HOOT_VERSION_GEN

#!/bin/sh

set -e

HVF=HOOT_VERSION_FILE
DEF_VER=UNKNOWN-VERSION

LF='
'

# Is this a git repo? Do we have git?
if test -d .git -o -f .git && command -v git >/dev/null 2>/dev/null; then
    HAS_GIT=true
fi

# First see if there is a version file (included in release tarballs),
# then try git-describe, then default.
if test -f version
then
        VN=$(cat version) || VN="$DEF_VER"
elif test "$HAS_GIT" = "true" &&
        VN=$(git describe --match "v[0-9]*" --abbrev=7 --tags HEAD 2>/dev/null | sed -e s/-/_/g) &&
        case "$VN" in
        *$LF*) (exit 1) ;;
        v[0-9]*)
                git update-index -q --refresh
                test -z "$(git diff-index --name-only HEAD --)" ||
                VN=$VN"_dirty" ;;
        esac
then
        #VN=$(echo "$VN" | sed -e 's/-/./g');
        PASS=1
else
        VN="$DEF_VER"
fi

# VN is the full version number. E.g. 0.1.0 if it is a tag. 0.1.0-2-deadbeef 
# if it is not a tagged version
VN=$(expr "$VN" : v*'\(.*\)')

# Parse out the old hoot version as "VC"
if test -r $HVF
then
        VC=$(sed -e 's/^HOOT_VERSION = //' <$HVF)
else
        VC=unset
fi

# If this is a git checkout then get the revision number
if test "$HAS_GIT" = "true"; then
    HOOT_REVISION=$(git rev-parse --short HEAD)
fi

# If the version has changed, then rewrite the version header file.
test "$VN" = "$VC" || {
    echo "HOOT_VERSION = $VN" >$HVF

    cat hoot-core/src/main/cpp/hoot/core/info/VersionDefines.h.in |  \
    sed -e "s/@HOOT_VERSION@/$VN/g" |  \
    sed -e "s/@HOOT_REVISION@/$HOOT_REVISION/g" |  \
    sed -e "s/@HOOT_BUILT_BY@/$(whoami)/g" > \
    hoot-core/src/main/cpp/hoot/core/info/VersionDefines.h
}