VERSION-GEN

#!/bin/bash
# (c) GIT-VERSION-GEN - github.com/git/git

if [ -z "$VERSION_FILE" ];
then
    VF="VERSION-FILE";
else
    VF="$VERSION_FILE";
fi

LF='
'

# First see if there is a version file (included in release tarballs),
# then try git-describe, then default.
if test -f version
then
    VN=$(cat version) || VN="$VERSION"
elif test -d .git -o -f .git &&
    VN=$(git describe --match "v[0-9]*" --tags --abbrev=7 HEAD 2>/dev/null) &&
    case "$VN" in
    *$LF*) (exit 1) ;;
    v[0-9]*)
        git update-index -q --refresh
        test -z "$(git diff-index --name-only HEAD --)" ||
        VN="$VN-dirty" ;;
    esac
then
    # Format into cygwin version  major.minor.micro-release[.<git-describe>]
    oldIFS="$IFS";
    IFS="-";
    i=0;
    VT="";
    for part in $VN;
    do
        case "$i"
        in
            '0')
                VT+="$part";
            ;;
            '1')
                VT+="-$part";
            ;;
            *)
                VT+=".$part";
            ;;
        esac;
        (( i++ ));
    done;
    unset i;
    IFS="$oldIFS"
    VN="$VT";
else
    VN="$VERSION"
fi

VN=$(expr "$VN" : v*'\(.*\)')

if test -r $VF
then
    VC=$(sed -e 's/^VERSION = //' <$VF)
else
    VC=unset
fi

test "$VN" = "$VC" || {
    echo >&2 "VERSION = $VN"
    echo "VERSION = $VN" >$VF
}

exit 0;