rdiff-backup mirror_metadata object removal sed calculator

mirrormeta2sed

#!/bin/bash
if [ $1 ]
then
    object=$1
    objectbase=`basename $1`
else
    echo "$0 object"
    echo "      only full path of object in metadata works, object may be dir or file"
    echo "      dir object is recursive"
    echo "      example:"
    echo "      web/img/hd/800x600"
    echo "      works if metadata line contains"
    echo "      File web/img/hd/800x600"
    exit
fi

# in second arg only specify uncompressed(!) filename of mirror_metadata
if [ $2 ]
then
    if [ -f "$2" ]
    then
    mirror_metadata=$2
    fi
else
    # or hard code uncompressed(!) filename of mirror_metadata
    mirror_metadata=mirror_metadata.2015-02-13T00:00:02+01:00.snapshot
fi

if [ -f "${mirror_metadata}" ]
then


    if [ ! -f "${objectbase}_lines.txt" ]
    then
        grep -A10 -n "File ${object}" ${mirror_metadata} >  ${objectbase}_lines.txt
    fi

    # get first line number to delete
    firstline=`head -n1 ${objectbase}_lines.txt | grep File | awk -F':' {' print $1 '}`
    # get last line number to delete
    lastline=`tail -n2 ${objectbase}_lines.txt | grep -v "File " | awk -F'-' {' print $1 '}`

    # print suggested sed command to delete all lines that refer to object
    echo "sed -e \"${firstline},${lastline}d\" ${mirror_metadata}"
fi