#!/bin/sh

# PRISTINE and BUILD can be the same, if you want

if [ ! -d $REF -o ! -d $KIT_DIR -o ! -d $PRISTINE -o ! -d $BUILD ]; then
   echo "$0: configuration error"
   exit 1
fi

for f in tar patch bzcat zcat cat \
  ; do if ! which $f >/dev/null;
       then echo "\"$f\" host utility missing"; missing=yes; fi;
done
for f in \
  binutils-2.10.1.tar \
  busybox-0.60.5.tar \
  telnetd-busybox-0.60.3.patch \
  gcc-2.95.3-diff-20010409 \
  gcc-2.95.3.tar \
  glibc-2.1.3.tar \
  glibc-crypt-2.1.tar \
  glibc-linuxthreads-2.1.3.tar \
  termcap-1.3.1.tar \
  linux-2.4.18.tar \
  ntpclient_2000_345.tar \
  mtd-util-20011008.tar \
  patch-2.4.18-rmk7 \
  patch-2.4.18-rmk7-lrd1 \
  strace-4.2.tar \
  genext2fs_1.3.orig.tar \
  genext2fs_1.3-2.diff \
  procinfo-18.tar \
  ; do if [ ! -r $REF/$f -a ! -r $REF/$f.gz -a ! -r $REF/$f.bz2 ];
       then echo "$REF/$f{,.gz,.bz2} missing"; missing=yes; fi;
done
for f in \
  src/fpget.c \
  src/hostconfig.c \
  glibc-2.1.3-stdio.texi.patch \
  busybox-0.60.5-cleanup \
  strace-4.2-patch \
  ; do if [ ! -r $KIT_DIR/$f ];
       then echo "$KIT_DIR/$f missing"; missing=yes; fi;
done

if [ "$missing" = "yes" ]; then exit 1; fi

cd $PRISTINE
echo "unpacking in $PRISTINE"

gen_cat() {
	if   [ -r $1.bz2 ]; then bzcat < $1.bz2;
	elif [ -r $1.gz  ]; then  zcat $1.gz;
	elif [ -r $1     ]; then   cat $1;
	# shouldn't happen:
	else echo "can't find useful form of $1" >&2; exit 1;
	fi
}

echo "binutils"
gen_cat $REF/binutils-2.10.1.tar | tar -xf -

echo "gcc"
gen_cat $REF/gcc-2.95.3.tar | tar -xf -
( cd gcc-2.95.3
  gen_cat $REF/gcc-2.95.3-diff-20010409 | patch -s -p1
)

echo "glibc"
gen_cat $REF/glibc-2.1.3.tar | tar -xf -
( cd glibc-2.1.3
  gen_cat $REF/glibc-crypt-2.1.tar | tar -xf -
  gen_cat $REF/glibc-linuxthreads-2.1.3.tar | tar -xf -
  cd manual
  patch -s -p0 <$KIT_DIR/glibc-2.1.3-stdio.texi.patch
)

echo "termcap"
gen_cat $REF/termcap-1.3.1.tar | tar -xf -

echo "strace"
gen_cat $REF/strace-4.2.tar | tar -xf -
( cd strace-4.2
  patch -s -p1 <$KIT_DIR/strace-4.2-patch
)

echo "busybox"
gen_cat $REF/busybox-0.60.5.tar | tar -xf -
( cd busybox-0.60.5
  gen_cat $REF/telnetd-busybox-0.60.3.patch | patch -s -p1
  gen_cat $KIT_DIR/busybox-0.60.5-cleanup | patch -s -p1
)

echo "ntpclient"
gen_cat $REF/ntpclient_2000_345.tar | tar -xf -

echo "mtd-util"
gen_cat $REF/mtd-util-20011008.tar | tar -xf -

echo "genext2fs"
gen_cat $REF/genext2fs_1.3.orig.tar | tar -xf -
( cd genext2fs-1.3.orig
  gen_cat $REF/genext2fs_1.3-2.diff | patch -s -p1
)

echo "procinfo"
gen_cat $REF/procinfo-18.tar | tar -xf -

cd $BUILD
echo "unpacking in $BUILD"

echo "linux"
gen_cat $REF/linux-2.4.18.tar | tar -xf -
( cd linux
  gen_cat $REF/patch-2.4.18-rmk7 | patch -s -p1
  gen_cat $REF/patch-2.4.18-rmk7-lrd1 | patch -s -p1
)
mv linux linux-2.4.18-rmk7-lrd1

echo "nanoengine-tools"
cp -a $KIT_DIR/src $BUILD/nanoengine-tools

echo "nanofix"
cp -a $KIT_DIR/nanofix $BUILD/nanofix

echo "unpacking complete, measuring disk footprint"
du -s $PRISTINE $BUILD

# done