#!/bin/bash

#----------------------------# Prepare BLFS_ROOT and extract
install_blfs_tools() {       # the scriptlets to build
#----------------------------# the dependency tools
set -e
# Install the files
[[ ! -d "${BUILDDIR}${BLFS_ROOT}" ]] && {
    sudo mkdir -pv "${BUILDDIR}${BLFS_ROOT}"
    sudo chown "$USER" "${BUILDDIR}${BLFS_ROOT}"
}
cp -r BLFS/* ${BUILDDIR}${BLFS_ROOT}
cp -r menu ${BUILDDIR}${BLFS_ROOT}
cp $COMMON_DIR/progress_bar.sh ${BUILDDIR}${BLFS_ROOT}
cp README.BLFS ${BUILDDIR}${BLFS_ROOT}
if [ "$WRAP_INSTALL" = y ]; then
  sed -e 's/PKGDIR/JH_UNPACKDIR/' \
      -e 's/PKG_DEST/JH_PKG_DIR/' \
      $PKGMNGTDIR/packInstall.sh > ${BUILDDIR}${BLFS_ROOT}/packInstall.sh
fi

# Set some harcoded envars to their proper values
sed -i s@tracking-dir@$TRACKING_DIR@ \
    ${BUILDDIR}${BLFS_ROOT}/{Makefile,gen-makefile.sh,gen_pkg_book.sh}

# If we have a working copy, copy it:
if [[ "$BLFS_WORKING_COPY" = "y" ]]; then
echo "copying the local BLFS working copy (may take some time)"
# -r: recursive; -u: only if newer; -T: otherwise, would copy to a subdirectory
# of blfs-xml, if blfs-xml already exists; --preserve=timestamps: if the local
# book has already been validated, tmp is posterior to the others, and
# validation will not be done again.
# sudo is needed because make (below) may already have been run and
# may have put some files owned by root
  sudo cp -ruT --preserve=timestamps $BLFS_WC_LOCATION \
                                ${BUILDDIR}${BLFS_ROOT}/$BLFS_XML
fi

# Copy the LFS book. Note that now, the book is downloaded before running
# the BLFS tools.
sudo cp -ruT --preserve=timestamps $BOOK \
                              ${BUILDDIR}${BLFS_ROOT}/$LFS_XML

# Downloads the book if necessary, initialize the tracking file and the
# package database.
# updating first is needed if the xml sources have already been cloned
# and we want to set the branches.
# Note that if LFS-BRANCH or BLFS-BRANCH is empty, which may happen
# if using a working copy, then the corresponding update is not
# performed by make (see BLFS/Makefile).
# sudo is needed if $BUILDDIR/var/lib is owned by root and /var/lib/jhalfs
# has to be created
sudo make -j1 -C $BUILDDIR$BLFS_ROOT             \
          REV=$INITSYS                           \
          LFS-BRANCH=${COMMIT}                   \
          BLFS-BRANCH=${BLFS_TREE}               \
          update
sudo make -j1 -C $BUILDDIR$BLFS_ROOT             \
          REV=$INITSYS                           \
          TRACKING_DIR=$BUILDDIR$TRACKING_DIR    \
          LFS_XML=$BUILDDIR$BLFS_ROOT/$LFS_XML   \
          LFS-BRANCH="${COMMIT}"                 \
          BLFS_XML=$BUILDDIR$BLFS_ROOT/$BLFS_XML \
          BLFS-BRANCH=${BLFS_TREE}               \
          $BUILDDIR$BLFS_ROOT/packages.xml

# But then $BUILDDIR/var/lib/ is owned by root if just created, which
# prevents $LUSER to create "nss_db". The problem is that $LUSER
# May not have been created yet. So do not change ownership here
# and do it in master.sh for chapter 4.
#sudo chown $LUSER:$LGROUP $BUILDDIR/var/lib

# Because the BLFS Makefile is supposed to be used in chroot (or booted)
# mode, the tracking file has wrong path for DTD. Change it:
sudo sed -i s@$BUILDDIR@@ $BUILDDIR$TRACKING_DIR/instpkg.xml

# Manually build a 'configuration' file
if [ "$DEP_LIBXML" = y ]; then
  LINE_LIBXML='CONFIG_libxml2=y'
else
  LINE_LIBXML='#CONFIG_libxml2 is not set'
fi
if [ "$DEP_LIBXSLT" = y ]; then
  LINE_LIBXSLT='CONFIG_libxslt=y'
else
  LINE_LIBXSLT='#CONFIG_libxslt is not set'
fi
# DocBook is a rec dep of libxslt
# if [ "$DEP_DBXML" = y ]; then
#   LINE_DBXML='CONFIG_DocBook=y'
# else
#   LINE_DBXML='#CONFIG_DocBook is not set'
# fi
if [ "$DEP_LYNX" = y ]; then
  LINE_LYNX='CONFIG_lynx=y'
else
  LINE_LYNX='#CONFIG_lynx is not set'
fi
if [ "$DEP_SUDO" = y ]; then
  LINE_SUDO='CONFIG_sudo=y'
else
  LINE_SUDO='#CONFIG_sudo is not set'
fi
if [ "$DEP_WGET" = y ]; then
  LINE_WGET='CONFIG_wget=y'
else
  LINE_WGET='#CONFIG_wget is not set'
fi
if [ "$DEP_GPM" = y ]; then
  LINE_GPM='CONFIG_gpm=y'
else
  LINE_GPM='#CONFIG_gpm is not set'
fi
if [ "$DEP_GIT" = y ]; then
  LINE_GIT='CONFIG_git=y'
else
  LINE_GIT='#CONFIG_git is not set'
fi

cat >$BUILDDIR$BLFS_ROOT/configuration <<EOF
$LINE_LIBXML
$LINE_LIBXSLT
$LINE_WGET
$LINE_GIT
$LINE_GPM
$LINE_LYNX
$LINE_SUDO
MAIL_SERVER=sendmail
optDependency=2
SUDO=n
LANGUAGE=$LANG
WRAP_INSTALL=$WRAP_INSTALL
PACK_INSTALL=/blfs_root/packInstall.sh
DEL_LA_FILES=$DEL_LA_FILES
STATS=n
SRC_ARCHIVE=/sources
BUILD_ROOT=/sources
BUILD_SUBDIRS=y
JOBS=$(if [ -n "$N_PARALLEL" ]; then echo $N_PARALLEL; else echo 1; fi)
EOF
for OPT_VAR in CFLAGS CXXFLAGS LDFLAGS; do
  eval optVal=\$${OPT_VAR}_$DEF_OPT_MODE
  if [ -n "$optVal" ] && [ "$optVal" != unset ]; then
    echo "CFG_$OPT_VAR"=\"$optVal\" >> $BUILDDIR$BLFS_ROOT/configuration
  else
    echo "CFG_$OPT_VAR"=EMPTY >> $BUILDDIR$BLFS_ROOT/configuration
  fi
done

# Generates the scripts for the blfs tools dependencies (in ./scripts)
yes "yes" | $BUILDDIR$BLFS_ROOT/gen_pkg_book.sh        \
                    $BUILDDIR$TRACKING_DIR/instpkg.xml \
                    $BUILDDIR$BLFS_ROOT

# Move the scriptlets where they should be
sudo rm -rf $BUILDDIR$BLFS_ROOT/scripts
mv scripts $BUILDDIR$BLFS_ROOT

# Generates a list containing download and copying instructions for tarballs
echo -e '#!/bin/bash\nset -e\n' > $BUILDDIR$BLFS_ROOT/download_script
sed -n -e '/PACKAGE=/,/^fi/{/^fi/a\
[ ! -f "$JH_SRC_ARCHIVE/$PACKAGE" ] && cp $PACKAGE $JH_SRC_ARCHIVE
p}' \
       -e '/|[ ]*md5sum/p' \
       -e '/PACKAGE1=/,/^fi/{/^fi/a\
[ ! -f "$JH_SRC_ARCHIVE/$PACKAGE1" ] && cp $PACKAGE1 $JH_SRC_ARCHIVE
p}' \
       -e '/PATCH=/,/^fi/{/^fi/a\
[ ! -f "$JH_SRC_ARCHIVE/$PATCH" ] && cp $PATCH $JH_SRC_ARCHIVE
p}' \
       -e '/URL=/,/^fi/{/^fi/a\
[ ! -f "$JH_SRC_ARCHIVE/$BOOTPACKG" ] && cp $BOOTPACKG $JH_SRC_ARCHIVE
p}' \
    $BUILDDIR$BLFS_ROOT/scripts/* >> $BUILDDIR$BLFS_ROOT/download_script
chmod u+x $BUILDDIR$BLFS_ROOT/download_script

# Downloads (or copy) to build_dir/sources
pushd $BUILDDIR/sources
# Remove `unpacked' files if some have been left
sudo find . -name unpacked -exec rm \{\} \;
if [ "$GETPKG" = "y" ]; then
    JH_FTP_SERVER=$SERVER/pub/blfs/ \
    JH_SRC_ARCHIVE=${SRC_ARCHIVE:-/dev/null}     \
    $BUILDDIR$BLFS_ROOT/download_script
else # Save the download script in case the user wants to run it later
    cp $BUILDDIR$BLFS_ROOT/download_script .
fi
popd
rm -v $BUILDDIR$BLFS_ROOT/download_script

# Suppresses unneeded parts of the scriptlets
if [ "$DEP_LIBXSLT" = y ]; then
  # libxslt pulls docbook-xsl in, which populates the catalog with annoying
  # **EDITME** references. Fortunately, those lines are regognizable because
  # they occur between lines containing '/etc/xml/catalog' at the end of the
  # line (without '&&'). I  have not found a simple way to delete lines
  # between 2 addresses, excluding either the first or the last one. So use
  # a loop for accumulating lines and deleting at the end.
  # Sorry for sed syntax.
  sed -i '\@^[[:space:]]*/etc/xml/catalog$@{
n
:a
\@/etc/xml/catalog$@bb
N
ba
:b
d}' \
      $BUILDDIR$BLFS_ROOT/scripts/*docbook-xsl
fi
if [ "$DEP_SUDO" = y ]; then
  sed -i '/cat.*pam.d/i mkdir -p /etc/pam.d' $BUILDDIR$BLFS_ROOT/scripts/*sudo
fi
# At last generates the build Makefile
mkdir -p $BUILDDIR$BLFS_ROOT/work
pushd $BUILDDIR$BLFS_ROOT/work
../gen-makefile.sh
# The generated Makefile updates the tracking file after each package
# installation, using libxslt, which is not installed yet. So move
# updating to the end of the process, adding an 'update' target
sed -i -e '/xsltproc/,+6d' \
       -e '/^all/s@$@ update@' \
       -e 's/touch/@touch/' Makefile
cat >> Makefile << EOF
update:
	@echo Updating the tracking file
	@for pack in \$\$(grep '<productname' ../$LFS_XML/tmp/lfs-full.xml | \\
		sed 's/.*>\([^<]*\)<.*/\1/' | \\
		sort | uniq); do \\
	    case "x\$\$pack" in \\
	      xgcc* | *pass[12] | xvim | \\
	      xshadow | xPython | xlinux-headers | xdbus | xsystemd )\\
		continue ;; \\
	    esac; \\
	    VERSION=\$\$(grep -A1 ">\$\$pack</product" \\
			../$LFS_XML/tmp/lfs-full.xml | \\
		head -n2|  \\
		sed -n '2s/.*>\([^<]*\)<.*/\1/p');  \\
	    xsltproc --stringparam packages ../packages.xml \\
		--stringparam package \$\$pack \\
		--stringparam version \$\$VERSION \\
		-o track.tmp \\
		../xsl/bump.xsl \$(TRACKING_FILE); \\
	    sed -i 's@PACKDESC@$BLFS_ROOT/packdesc.dtd@' track.tmp; \\
	    xmllint --format --postvalid track.tmp > \$(TRACKING_FILE); \\
	    rm track.tmp; \\
	done; \\
	VERSION=\$\$(grep 'echo.*lfs-release' ../$LFS_XML/tmp/lfs-full.xml | \\
	             sed 's/.*echo[ ]*\([^ ]*\).*/\1/'); \\
	xsltproc --stringparam packages ../packages.xml \\
	    --stringparam package LFS-Release \\
	    --stringparam version \$\$VERSION \\
	    -o track.tmp \\
	    ../xsl/bump.xsl \$(TRACKING_FILE); \\
	sed -i 's@PACKDESC@$BLFS_ROOT/packdesc.dtd@' track.tmp; \\
	xmllint --format --postvalid track.tmp > \$(TRACKING_FILE); \\
	rm track.tmp; \\
	for file in *-*; do \\
	    xsltproc --stringparam packages ../packages.xml \\
		--stringparam package \$\${file##*z-} \\
		-o track.tmp \\
		../xsl/bump.xsl \$(TRACKING_FILE); \\
	    sed -i 's@PACKDESC@$BLFS_ROOT/packdesc.dtd@' track.tmp; \\
	    xmllint --format --postvalid track.tmp > \$(TRACKING_FILE); \\
	    rm track.tmp; \\
	done
	@touch \$@
	@echo -e "\n\n "\$(BOLD)Target \$(BLUE)\$@ \$(BOLD)OK
	@echo --------------------------------------------------------------------------------\$(WHITE)
EOF
popd
}