#!/bin/bash

# BEGIN_ICS_COPYRIGHT8 ****************************************

# 

# Copyright (c) 2015, Intel Corporation

# 

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

# 

#     * Redistributions of source code must retain the above copyright notice,

#       this list of conditions and the following disclaimer.

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#       may be used to endorse or promote products derived from this software

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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

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# END_ICS_COPYRIGHT8   ****************************************

##

## expand_ofed

## -----------

## expand an OFED tgz in preparation for source control in OFED vendor branch

##

## Usage:

##	expand_ofed [-d dest_dir] [-c compare_dir] ofed.tgz

##

## Arguments:

##	-d - destination for expansion, default is ./SOURCE_TREE

##	-c - optional expanded ofed to compare to

##  ofed.tgz - ofed tgz to expand

## Environment:

tempdir=/usr/tmp/expand$$

# handle various places we could find our tools

if [ -e ./expand_source.sh ]

then

	expand_source=$PWD/expand_source.sh

#elif [ -e $TL_DIR/MakeTools/expand_source.sh ]

#then

#	expand_source=$TL_DIR/MakeTools/expand_source.sh

else

	expand_source=expand_source

fi

if ! type $expand_source

then

	exit 1

fi

Usage()

{

	echo "Usage: expand_ofed [-d dest_dir] [-c compare_dir] ofed.tgz" >&2

	echo "    -d - destination for expansion, default is ./SOURCE_TREE" >&2

	echo "    -c - optional expanded ofed to compare to" >&2

	echo "    ofed.tgz - ofed tgz to expand" >&2

	exit 2

}

# convert $1 to an absolute path

fix_dir()

{

	local dir

	if [ x$(echo $1|cut -c1) != x"/" ]

	then

		dir="$PWD/$1"

	else

		dir="$1"

	fi

	# drop trailing /

	if [ "$dir" != "/" ]

	then

		echo "$dir"|sed -e 's|/*$||'

	else

		echo "$dir"

	fi

}

dest_dir=$PWD/SOURCE_TREE

compare_dir=

while getopts d:c: param

do

	case $param in

	d)	dest_dir="$OPTARG";;

	c)	compare_dir="$OPTARG";;

	*)	Usage;;

	esac

done

shift $(($OPTIND -1))

if [ $# -ne 1 ]

then

	Usage

fi

ofed_tgz=$1

if [ ! -f $ofed_tgz ]

then

	echo "expand_ofed: Can't find: $ofed_tgz" >&2

	exit 1

fi

dest_dir=$(fix_dir $dest_dir)

ofed_tgz=$(fix_dir $ofed_tgz)

mkdir -p $dest_dir

# assume tarfile creates one dir

ofed_dir=$(tar tfz $ofed_tgz|sed -e 's/\/.*//'|sort -u)

if [ x"$ofed_dir" = x ]

then

	echo "expand_ofed: Can't figure out top dir of $ofed_tgz" >&2

	exit 1

fi

mkdir -p $tempdir

tar xvfz $ofed_tgz -C $tempdir

if [ $? -ne 0 -o ! -d $tempdir/$ofed_dir ]

then

	echo "expand_ofed: unable to untar $ofed_tgz" >&2

	exit 1

fi

$expand_source -a -s $tempdir/$ofed_dir -d $dest_dir

if [ $? -ne 0 ]

then

	echo "expand_ofed: expand_source failed" >&2

	exit 1

fi

rm -rf $tempdir

if [ x"$compare_dir" != x ]

then

	echo "Comparing $compare_dir and $dest_dir..."

	compare_dir=$(fix_dir $compare_dir)

	diff -r --exclude CVS $compare_dir $dest_dir > ./diffs

	# list of new files in drop relative to $compare_dir drop

	grep "^Only in $dest_dir[:/]" < ./diffs|sed -e 's/^Only in //' -e 's/: /\//' -e "s|$dest_dir|.|" > ./added_files

	# list of files moved/removed in drop relative to $compare_dir drop

	grep "^Only in $compare_dir[:/]" < ./diffs|grep -v ': CVS'|sed -e 's/^Only in //' -e 's/: /\//' -e "s|$compare_dir|.|" > ./removed_files

	# summary

	echo "New files in this drop is in ./added_files: $(wc -l < ./added_files) files"

	echo "Files removed in this drop is in ./removed_files: $(wc -l < ./removed_files) files"

	echo "All diffs are in ./diffs: $(wc -l < ./diffs) lines"

fi

exit 0