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att
GitHub Repository: att/ast
 Path: blob/master/src/cmd/pax/delta2patch.sh
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########################################################################

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#                                                                      #

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#               This software is part of the ast package               #

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#          Copyright (c) 1987-2011 AT&T Intellectual Property          #

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#                      and is licensed under the                       #

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#                 Eclipse Public License, Version 1.0                  #

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#                    by AT&T Intellectual Property                     #

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#                                                                      #

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#                A copy of the License is available at                 #

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#          http://www.eclipse.org/org/documents/epl-v10.html           #

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#         (with md5 checksum b35adb5213ca9657e911e9befb180842)         #

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#                                                                      #

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#              Information and Software Systems Research               #

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#                            AT&T Research                             #

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#                           Florham Park NJ                            #

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#                                                                      #

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#                 Glenn Fowler <[email protected]>                  #

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#                                                                      #

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########################################################################

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command=delta2patch

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USAGE=$'

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[-?

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@(#)$Id: delta2patch (AT&T Research) 2007-12-11 $

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]

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'$USAGE_LICENSE$'

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[+NAME?delta2patch - generate patch script from pax delta+base archives]

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[+DESCRIPTION?\bdelta2patch\b generates a \bpatch\b(1) \adiff -u\a script

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	given a \bpax\b(1) delta and base source archive to convert

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	files extracted from the base archive to be equivalent to files

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	extracted from the delta archive with respect to the base archive.]

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delta base

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[+SEE ALSO?\bpackage\b(1), \bpax\b(1)]

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'

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function usage

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{

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	OPTIND=0

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	getopts -a $command "$USAGE" OPT '--??long'

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	exit 2

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}

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while	getopts -a $command "$USAGE" OPT

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do	case $OPT in

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	*)	usage ;;

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	esac

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done

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if	(( $# != 2 ))

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then	usage

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fi

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delta=$1

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base=$2

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changes=$(pax --nosummary -f $delta 2>/dev/null | sed -e '/^\(update\|create\) /!d' -e 's/^[^ ]* //')

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tmp=/tmp/d2p-$$

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trap "rm -rf $tmp" 0

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mkdir $tmp $tmp/old $tmp/new || exit

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pax --nosummary -rf $base -s ",.*,$tmp/old/&," $changes

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pax --nosummary -rf $delta -z $base -s ",.*,$tmp/new/&," $changes

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diff -r -N -u $tmp/old $tmp/new | sed -e "s,$tmp/new/,,g" -e "s,$tmp/old/,,g" -e $'s/^--- \\([^\t]*\\)/&.orig/' -e '/^diff /s/ [^ ]*$/.orig&/'

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