FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/scripts/filter.sh

     #!/bin/sh
     
     # git branch -D upstream/rewritten-prev upstream/master upstream/rewritten filter-state      
     
     set -e
     
     export SCRIPTS=$(dirname $(readlink -f $0))
     
     export FILTER_BRANCH_SQUELCH_WARNING=1
    
    UPSTREAM_MASTER=upstream/master
    UPSTREAM_REWRITTEN=upstream/dts
    
    LAST=$(git show-ref -s refs/heads/$UPSTREAM_MASTER||true)
    if [ -n "$LAST" ] ; then
        RANGE="$LAST..$UPSTREAM_REWRITTEN"
    else
        # This must be a new conversion...
        RANGE="$UPSTREAM_REWRITTEN"
    fi
    
    FETCH_HEAD=$(git rev-parse FETCH_HEAD)
    if [ "$LAST" = "$FETCH_HEAD" ] ; then
            echo "Nothing new in FETCH_HEAD: $FETCH_HEAD"
            exit 0
    fi
    
    rm -f .git/refs/original/refs/heads/${UPSTREAM_REWRITTEN}
    
    git branch -f $UPSTREAM_REWRITTEN FETCH_HEAD
    
    git filter-branch --force \
            --index-filter ${SCRIPTS}/index-filter.sh \
            --msg-filter 'cat && /bin/echo -e "\n[ upstream commit: $GIT_COMMIT ]"' \
            --tag-name-filter 'while read t ; do /bin/echo -n $t-dts-raw ; done' \
            --parent-filter 'sed "s/-p //g" | xargs -r git show-branch --independent | sed "s/\</-p /g"' \
            --prune-empty --state-branch refs/heads/filter-state \
            -- $RANGE
    
    git branch -f $UPSTREAM_MASTER FETCH_HEAD

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