#!/bin/bash
# $Id$
set -e
# Pass trap handlers to functions
set -E

# VT100 colors
declare -r  BLACK=$'\e[1;30m'
declare -r  DK_GRAY=$'\e[0;30m'

declare -r  RED=$'\e[31m'
declare -r  GREEN=$'\e[32m'
declare -r  YELLOW=$'\e[33m'
declare -r  BLUE=$'\e[34m'
declare -r  MAGENTA=$'\e[35m'
declare -r  CYAN=$'\e[36m'
declare -r  WHITE=$'\e[37m'

declare -r  OFF=$'\e[0m'
declare -r  BOLD=$'\e[1m'
declare -r  REVERSE=$'\e[7m'
declare -r  HIDDEN=$'\e[8m'

declare -r  tab_=$'\t'
declare -r  nl_=$'\n'

declare -r   DD_BORDER="${BOLD}==============================================================================${OFF}"
declare -r   SD_BORDER="${BOLD}------------------------------------------------------------------------------${OFF}"
declare -r STAR_BORDER="${BOLD}******************************************************************************${OFF}"

# bold yellow > <  pair
declare -r R_arrow=$'\e[1;33m>\e[0m'
declare -r L_arrow=$'\e[1;33m<\e[0m'


#>>>>>>>>>>>>>>>ERROR TRAPPING >>>>>>>>>>>>>>>>>>>>
#-----------------------#
simple_error() {        # Basic error trap.... JUST DIE
#-----------------------#
  # If +e then disable text output
  if [[ "$-" =~ e ]]; then
    LASTLINE="$1"
    LASTERR="$2"
    LASTFUNC="$3"
    LASTSOURCE="$4"
#    echo -e "\n${RED}ERROR:${GREEN} basic error trapped!${OFF}\n" >&2
    echo -e "\n${RED}ERROR:${GREEN} Error $LASTERR at $LASTSOURCE line ${LASTLINE}!${OFF}\n" >&2
  fi
  exit $LASTERR
}

see_ya() {
    echo -e "\n${L_arrow}${BOLD}jhalfs${R_arrow} exit${OFF}\n"
}
##### Simple error TRAPS
# ctrl-c   SIGINT
# ctrl-y
# ctrl-z   SIGTSTP
# SIGHUP   1 HANGUP
# SIGINT   2 INTRERRUPT FROM KEYBOARD Ctrl-C
# SIGQUIT  3
# SIGKILL  9 KILL
# SIGTERM 15 TERMINATION
# SIGSTOP 17,18,23 STOP THE PROCESS
#####
set -e
trap see_ya 0
trap 'simple_error "${LINENO}" "$?" "${FUNCNAME}" "${BASH_SOURCE}"' ERR
trap 'echo -e "\n\n${RED}INTERRUPT${OFF} trapped\n" &&  exit 2'  1 2 3 15 17 18 23
#>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

version="
${BOLD}  \"jhalfs\"${OFF} builder tool (stable version 2.4)

  Written by George Boudreau, Manuel Canales Esparcia, Pierre Labastie,
  plus several contributions.

  Based on an idea from Jeremy Huntwork

  This set of files are published under the
  ${BOLD}Gnu General Public License, Version 2.${OFF}
  See the ${BOLD}LICENCE${OFF} file in this directory.
"

case $1 in
  -v ) echo "$version" && exit ;;
  run ) : ;;
  * )
    echo "${nl_}${tab_}${BOLD}${RED}This script cannot be called directly: EXITING ${OFF}${nl_}"
    exit 1
    ;;
esac

# If the user has not saved his configuration file, let's ask
# if he or she really wants to run this stuff
if [ $(ls -l --time-style='+%Y%m%d%H%M%S' configuration.old | cut -d' ' -f 6) \
 -ge $(ls -l --time-style='+%Y%m%d%H%M%S' configuration | cut -d' ' -f 6) ]
  then echo -n "Do you want to run jhalfs? yes/no (yes): "
  read ANSWER
  if [ x${ANSWER:0:1} = "xn" -o x${ANSWER:0:1} = "xN" ] ; then
    echo "${nl_}Exiting gracefully.${nl_}"
    exit
  fi
fi

# Change this to 0 to suppress almost all messages
VERBOSITY=1

[[ $VERBOSITY > 0 ]] && echo -n "Loading config params from <configuration>..."
source configuration
[[ $? > 0 ]] && echo "file: configuration did not load.." && exit 1
[[ $VERBOSITY > 0 ]] && echo "OK"

# These are boolean vars generated from Config.in.
# ISSUE: If a boolean parameter is not set to y(es) there
# is no variable defined by the menu app. This can
# cause a headache if you are not aware.
#  The following variables MUST exist. If they don't, the
#  default value is n(o).
RUNMAKE=${RUNMAKE:-n}
GETPKG=${GETPKG:-n}
COMPARE=${COMPARE:-n}
RUN_FARCE=${RUN_FARCE:-n}
RUN_ICA=${RUN_ICA:-n}
PKGMNGT=${PKGMNGT:-n}
BOMB_TEST=${BOMB_TEST:-n}
STRIP=${STRIP:=n}
REPORT=${REPORT:=n}
VIMLANG=${VIMLANG:-n}
FULL_LOCALE=${FULL_LOCALE:-n}
GRSECURITY_HOST=${GRSECURITY_HOST:-n}
CUSTOM_TOOLS=${CUSTOM_TOOLS:-n}
REBUILD_MAKEFILE=${REBUILD_MAKEFILE:-n}
INSTALL_LOG=${INSTALL_LOG:-n}
CLEAN=${CLEAN:=n}
SET_SSP=${SET_SSP:=n}
SET_ASLR=${SET_ASLR:=n}
SET_PAX=${SET_PAX:=n}
SET_HARDENED_TMP=${SET_HARDENED_TMP:=n}
SET_WARNINGS=${SET_WARNINGS:=n}
SET_MISC=${SET_MISC:=n}
SET_BLOWFISH=${SET_BLOWFISH:=n}

if [[ "${NO_PROGRESS_BAR}" = "y" ]] ; then
	NO_PROGRESS="#"
fi


# Sanity check on the location of $BUILDDIR / $JHALFSDIR
CWD=$(cd `dirname $0` && pwd)
if [[ $JHALFSDIR == $CWD ]]; then
    echo " The jhalfs source directory conflicts with the jhalfs build directory."
    echo " Please move the source directory or change the build directory."
    exit 2
fi

# Book sources envars
BRANCH_ID=${BRANCH_ID:=development}

case $BRANCH_ID in
  development )
    case $PROGNAME in
      clfs* ) TREE="" ;;
          * ) TREE=trunk/BOOK ;;
    esac
    LFSVRS=development
    ;;
  *EDIT* )  echo " You forgot to set the branch or stable book version."
            echo " Please rerun make and fix the configuration."
            exit 2 ;;
  branch-* )
    case $PROGNAME in
      lfs )
        LFSVRS=${BRANCH_ID}
        TREE=branches/${BRANCH_ID#branch-}
        if [ ${BRANCH_ID#branch-} = 6 ]; then
            TREE=${TREE}/BOOK
        fi
        ;;
      clfs* )
        LFSVRS=${BRANCH_ID}
        TREE=${BRANCH_ID#branch-}
        ;;
    esac
    ;;
  * )
    case $PROGNAME in
      lfs )
        LFSVRS=${BRANCH_ID}
        TREE=tags/${BRANCH_ID}
        if (( ${BRANCH_ID:0:1} < 7 )) ; then
            TREE=${TREE}/BOOK
        fi
        ;;
      hlfs )
        LFSVRS=${BRANCH_ID}
        TREE=tags/${BRANCH_ID}/BOOK
        ;;
      clfs* )
        LFSVRS=${BRANCH_ID}
        TREE=clfs-${BRANCH_ID}
        ;;
      * )
    esac
    ;;
esac

# Set the document location...
BOOK=${BOOK:=$JHALFSDIR/$PROGNAME-$LFSVRS}


#--- Envars not sourced from configuration
case $PROGNAME in
      clfs ) declare -r GIT="git://git.clfs.org/cross-lfs" ;;
      clfs2 ) declare -r GIT="git://git.clfs.org/clfs-sysroot" ;;
      clfs3 ) declare -r GIT="git://git.clfs.org/clfs-embedded" ;;
      *) declare -r SVN="svn://svn.linuxfromscratch.org" ;;
esac
declare -r LOG=000-masterscript.log
  # Needed for fetching BLFS book sources when building CLFS
declare -r SVN_2="svn://svn.linuxfromscratch.org"

# Set true internal variables
COMMON_DIR="common"
PACKAGE_DIR=$(echo $PROGNAME | tr '[a-z]' '[A-Z]')
MODULE=$PACKAGE_DIR/master.sh
PKGMNGTDIR="pkgmngt"
# The name packageManager.xml is hardcoded in *.xsl, so no variable.

[[ $VERBOSITY > 0 ]] && echo -n "Loading common-functions module..."
source $COMMON_DIR/common-functions
[[ $? > 0 ]] && echo " $COMMON_DIR/common-functions did not load.." && exit
[[ $VERBOSITY > 0 ]] && echo "OK"
[[ $VERBOSITY > 0 ]] && echo -n "Loading code module <$MODULE>..."
source $MODULE
[[ $? > 0 ]] && echo "$MODULE did not load.." && exit 2
[[ $VERBOSITY > 0 ]] && echo "OK"
#
[[ $VERBOSITY > 0 ]] && echo "${SD_BORDER}${nl_}"


#*******************************************************************#
[[ $VERBOSITY > 0 ]] && echo -n "Loading function <func_check_version.sh>..."
source $COMMON_DIR/libs/func_check_version.sh
[[ $? > 0 ]] && echo " function module did not load.." && exit 2
[[ $VERBOSITY > 0 ]] && echo "OK"

[[ $VERBOSITY > 0 ]] && echo -n "Loading function <func_validate_configs.sh>..."
source $COMMON_DIR/libs/func_validate_configs.sh
[[ $? > 0 ]] && echo " function module did not load.." && exit 2
[[ $VERBOSITY > 0 ]] && echo "OK"

[[ $VERBOSITY > 0 ]] && echo -n "Loading function <func_custom_pkgs>..."
source $COMMON_DIR/libs/func_custom_pkgs
[[ $? > 0 ]] && echo " function module did not load.." && exit 2
[[ $VERBOSITY > 0 ]] && echo "OK"


[[ $VERBOSITY > 0 ]] && echo "${SD_BORDER}${nl_}"

[[ $VERBOSITY > 0 ]] && echo Checking tools required for jhalfs
check_alfs_tools

[[ $VERBOSITY > 0 ]] && echo "${SD_BORDER}${nl_}"

# blfs-tool envars
BLFS_TOOL=${BLFS_TOOL:-n}
if [[ "${BLFS_TOOL}" = "y" ]] ; then
  [[ $VERBOSITY > 0 ]] && echo Checking supplementary tools for installing BLFS
  check_blfs_tools
  [[ $VERBOSITY > 0 ]] && echo "${SD_BORDER}${nl_}"
  BLFS_SVN=${BLFS_SVN:-n}
  BLFS_WORKING_COPY=${BLFS_WORKING_COPY:-n}
  BLFS_BRANCH=${BLFS_BRANCH:-n}
  if [[ "${BLFS_SVN}" = "y" ]]; then
    BLFS_BRANCH_ID=development
    BLFS_TREE=trunk/BOOK
  elif [[ "${BLFS_WORKING_COPY}" = "y" ]]; then
    [[ -d "$BLFS_WC_LOCATION" ]] &&
    [[ -d "$BLFS_WC_LOCATION/postlfs" ]] || {
      echo " BLFS tools: This is not a working copy: $BLFS_WC_LOCATION."
      echo " Please rerun make and fix the configuration."
      exit 2
      }
    BLFS_TREE=$(cd $BLFS_WC_LOCATION; svn info | grep '^URL' | sed 's@.*BLFS/@@')
    BLFS_BRANCH_ID=$(echo $BLFS_TREE | sed -e 's@trunk/BOOK@development@' \
                                           -e 's@branches/@branch-@' \
                                           -e 's@tags/@@' \
                                           -e 's@/BOOK@@')
  elif [[ "${BLFS_BRANCH}" = "y" ]] ; then
    case $BLFS_BRANCH_ID in
           *EDIT* )  echo " You forgot to set the BLFS branch or stable book version."
                     echo " Please rerun make and fix the configuration."
                     exit 2 ;;
   branch-systemd )  BLFS_TREE=branches/systemd ;;
         branch-* )  BLFS_TREE=branches/${BLFS_BRANCH_ID#branch-}/BOOK ;;
       6.2* | 7.* )  BLFS_TREE=tags/${BLFS_BRANCH_ID} ;;
                * )  BLFS_TREE=tags/${BLFS_BRANCH_ID}/BOOK ;;
    esac
  fi
  [[ $VERBOSITY > 0 ]] && echo -n "Loading blfs tools installation function..."
  source $COMMON_DIR/libs/func_install_blfs
  [[ $? > 0 ]] && echo "function module did not load.." && exit 1
  [[ $VERBOSITY > 0 ]] && echo "OK"
fi

###################################
###          MAIN               ###
###################################


validate_config
echo "${SD_BORDER}${nl_}"
echo -n "Are you happy with these settings? yes/no (no): "
read ANSWER
if [ x$ANSWER != "xyes" ] ; then
  echo "${nl_}Rerun make to fix the configuration options.${nl_}"
  exit
fi
echo "${nl_}${SD_BORDER}${nl_}"

# Load additional modules or configuration files based on global settings
# compare module
if [[ "$COMPARE" = "y" ]]; then
  [[ $VERBOSITY > 0 ]] && echo -n "Loading compare module..."
  source $COMMON_DIR/libs/func_compare.sh
  [[ $? > 0 ]] && echo "$COMMON_DIR/libs/func_compare.sh did not load.." && exit
  [[ $VERBOSITY > 0 ]] && echo "OK"
fi
#
# optimize module
if [[ "$OPTIMIZE" != "0" ]]; then
  [[ $VERBOSITY > 0 ]] && echo -n "Loading optimization module..."
  source optimize/optimize_functions
  [[ $? > 0 ]] && echo " optimize/optimize_functions did not load.." && exit
  [[ $VERBOSITY > 0 ]] && echo "OK"
  #
  # optimize configurations
  [[ $VERBOSITY > 0 ]] && echo -n "Loading optimization config..."
  source optimize/opt_config
  [[ $? > 0 ]] && echo " optimize/opt_config did not load.." && exit
  [[ $VERBOSITY > 0 ]] && echo "OK"
  # The number of parallel jobs is taken from configuration now
  MAKEFLAGS="-j${N_PARALLEL}"
  # Validate optimize settings, if required
  validate_opt_settings
fi
#

if [[ "$REBUILD_MAKEFILE" = "n" ]] ; then

  # If requested, clean the build directory
  clean_builddir

  if [[ ! -d $JHALFSDIR ]]; then
    mkdir -p $JHALFSDIR
  fi

  # Create $BUILDDIR/sources even though it could be created by get_sources()
  if [[ ! -d $BUILDDIR/sources ]]; then
    mkdir -p $BUILDDIR/sources
  fi
  #
  # Create the log directory
  if [[ ! -d $LOGDIR ]]; then
    mkdir $LOGDIR
  fi
  >$LOGDIR/$LOG
  #
  # Copy common helper files
  cp $COMMON_DIR/{makefile-functions,progress_bar.sh} $JHALFSDIR/
  # Copy needed stylesheets
  cp $COMMON_DIR/{packages.xsl,chroot.xsl} $JHALFSDIR/
  #
  # Fix the XSL book parser
  case $PROGNAME in
    clfs* ) sed 's,FAKEDIR,'${BOOK}/BOOK',' ${PACKAGE_DIR}/${XSL} > $JHALFSDIR/${XSL} ;;
    lfs | hlfs ) sed 's,FAKEDIR,'$BOOK',' $PACKAGE_DIR/$XSL > $JHALFSDIR/${XSL} ;;
    * ) ;;
  esac
  export XSL=$JHALFSDIR/${XSL}
  #

  # Copy packageManager.xml, if needed
  [[ "$PKGMNGT" = "y" ]] && [[ "$PROGNAME" = "lfs" ]] && {
    cp $PKGMNGTDIR/packageManager.xml  $JHALFSDIR/
    cp $PKGMNGTDIR/packInstall.sh  $JHALFSDIR/
    }
  #
  # Copy urls.xsl, if needed
  [[ "$GETPKG" = "y" ]] && cp $COMMON_DIR/urls.xsl  $JHALFSDIR/
  #
  # Create the test-log directory, if needed
  [[ "$TEST" != "0" ]] && [[ ! -d $TESTLOGDIR ]] && install -d -m 1777 $TESTLOGDIR
  #
  # Create the installed-files directory, if needed
  [[ "$INSTALL_LOG" = "y" ]] && [[ ! -d $FILELOGDIR ]] && install -d -m 1777 $FILELOGDIR
  #
  # Prepare report creation, if needed
  if [[ "$REPORT" = "y" ]]; then
    cp $COMMON_DIR/create-sbu_du-report.sh  $JHALFSDIR/
    # After making sure that all looks sane, dump the settings to a file
    # This file will be used to create the REPORT header
    validate_config > $JHALFSDIR/jhalfs.config
  fi
  #
  # Copy optimize files, if needed
  [[ "$OPTIMIZE" != "0" ]] && cp optimize/opt_override $JHALFSDIR/
  #
  # Copy compare files, if needed
  if [[ "$COMPARE" = "y" ]]; then
    mkdir -p $JHALFSDIR/extras
    cp extras/* $JHALFSDIR/extras
  fi
  #
  # Copy custom tools config files, if requested
  if [[ "${CUSTOM_TOOLS}" = "y" ]]; then
    echo "Copying custom tool scripts to $JHALFSDIR"
    mkdir -p $JHALFSDIR/custom-commands
    cp -f custom/config/* $JHALFSDIR/custom-commands
  fi
  #
  # Install blfs-tool, if requested.
  if [[ "${BLFS_TOOL}" = "y" ]] ; then
    echo Installing BLFS book and tools
    install_blfs_tools 2>&1 | tee -a $LOGDIR/$LOG
    [[ ${PIPESTATUS[0]} != 0 ]] && exit 1
  fi
  #

# Download or updates the book source
  get_book
  extract_commands
  echo "${SD_BORDER}${nl_}"

fi

# When regenerating the Makefile, we need to know also the
# canonical book version
if [[ "$REBUILD_MAKEFILE" = "y" ]] ; then
  case $PROGNAME in
    clfs* )
      VERSION=$(xmllint --noent $JHALFSDIR/$BOOK/prologue/$ARCH/bookinfo.xml 2>/dev/null | grep subtitle | sed -e 's/^.*ion //'  -e 's/<\/.*//') ;;
    lfs)
      if [[ "$INITSYS" = "sysv" ]] ; then
        VERSION=$(grep 'ENTITY version ' $JHALFSDIR/$BOOK/general.ent| cut -d\" -f2)
      else
        VERSION=$(grep 'ENTITY versiond' $JHALFSDIR/$BOOK/general.ent| cut -d\" -f2)
      fi
      ;;
    *)
      VERSION=$(xmllint --noent $JHALFSDIR/$BOOK/prologue/bookinfo.xml 2>/dev/null | grep subtitle | sed -e 's/^.*ion //'  -e 's/<\/.*//') ;;
  esac
fi

build_Makefile

echo "${SD_BORDER}${nl_}"

# Check for build prerequisites.
  echo
  cd $CWD
  check_prerequisites
  echo "${SD_BORDER}${nl_}"
# All is well, run the build (if requested)
run_make