headChange.sh #1

#!/bin/sh

# electric commander sets ID_VERSION
if [ -z "$ID_VERSION"]; then
# P4_CHANGELIST is set by a jenkins plugin
    if [ -z "$P4_CHANGELIST" ]; then
        P4_CHANGELIST=$(p4 changes -m1 @$P4CLIENT | cut -d ' ' -f 2 2> /dev/null)
        if [ -z "$P4_CHANGELIST" ]; then
            P4_CHANGELIST="SNAPSHOT"
        fi
    fi
# ID_PATCH is what we use
    if [ -z "$ID_PATCH" ]; then
        ID_PATCH=$P4_CHANGELIST
    fi
# ID_REL_BASE is set in the jenkins job
    if [ -z "$ID_REL_BASE" ]; then
        ID_REL_BASE=2013.1
    fi
# ID_REL_QUALIFIER is set in the jenkins job (or not, it's optional)
# finally, the ID_VERSION
    export ID_VERSION=${ID_REL_BASE}.${ID_PATCH}${ID_REL_QUALIFIER:+-${ID_REL_QUALIFIER}}
fi

echo $ID_VERSION