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. $GRIMOIRE/libaccount
. $GRIMOIRE/libgcc
. $GRIMOIRE/config_query_multi.function

if is_depends_enabled $SPELL python;then
  VV=`installed_version python | cut -c-3` &&
  PYTHON2=/usr/bin/python${VV}
  export PYTHON=$PYTHON2
fi

if is_depends_enabled $SPELL python3;then
  VV=`installed_version python3 | cut -c-3` &&
  PYTHON3=/usr/bin/python${VV}m
  export PYTHON=$PYTHON3
fi

QT5DIR=$INSTALL_ROOT/opt/qt5
qt5_build() {
  export PKG_CONFIG_PATH="$QT5DIR/lib/pkgconfig"
  cd $SOURCE_DIRECTORY &&
  QMAKEPATH="$QT5DIR/bin"
# in some cases, we set a symlink to python in the source directory
  PATH="$QMAKEPATH:$SOURCE_DIRECTORY:$PATH"
  qmake PREFIX=$QT5DIR $OPTS *.pro &&
  make
}


#---------------------------------------------------------------------
## This function automatically fixes any known bad paths
#---------------------------------------------------------------------
function default_grimoire_post_install () {
  real_default_sorcery_post_install && # currently a no-op
  if [[ $STAGED_INSTALL == off ]]; then
    return 0
  fi &&
  pushd TRANSL &> /dev/null &&
  if [[ -d usr/man ]]; then
    echo Fixing bad install path: /usr/man &&
    mv -v usr/man usr/share
  fi &&
  if [[ -d usr/info ]]; then
    echo Fixing bad install path: /usr/info &&
    mv -v usr/info usr/share
  fi &&
  if [[ -d usr/local/man ]]; then
    echo Fixing bad install path: /usr/local/man &&
    mv -v usr/local/man usr/share
  fi &&
  if [[ -d usr/local/info ]]; then
    echo Fixing bad install path: /usr/local/info &&
    mv -v usr/local/info usr/share
  fi &&
  popd &> /dev/null
}

#---------------------------------------------------------------------
## Replaces sorcerys default_pre_build with a custom version using
## the invoke_gcc function from libgcc #10641
#---------------------------------------------------------------------
function default_pre_build () {
  invoke_gcc  &&
  real_default_pre_build
}

#---------------------------------------------------------------------
## @return 0 if glibc was compiled with NPTL
## @return 1 otherwise
##
## Detects if the current glibc includes NPTL support.
##
#---------------------------------------------------------------------
function glibc_is_nptl ()
{
  if getconf GNU_LIBPTHREAD_VERSION | grep -q NPTL; then
    return 0
  fi
  return 1
}

#---------------------------------------------------------------------
# Runs update-desktop-database if it is installed
#---------------------------------------------------------------------
function update_desktop_database ()
{
  if test -x /usr/bin/update-desktop-database; then
    message "${MESSAGE_COLOR}Updating application mime type database.${DEFAULT_COLOR}"
    /usr/bin/update-desktop-database
  fi
}

#---------------------------------------------------------------------
## this function installs the *.desktop, start* files and qingy links
## this function is intended to be used by spells for windowmanagers
#---------------------------------------------------------------------
function install_wmfiles ()
{
  local wm_desktopfile_dir="${INSTALL_ROOT}/usr/share/xsessions"
  local wm_startwm_dir="${INSTALL_ROOT}/usr/bin"

  # install the start* file for the windowmanager if it's not
  # installed already
  if [ -f ${SCRIPT_DIRECTORY}/start${SPELL} ] ; then
    if ! [ -e ${wm_startwm}/start${SPELL} ] ; then
      install  -m  755  ${SCRIPT_DIRECTORY}/start${SPELL}     \
                        ${wm_startwm_dir}
    fi
  fi

  # making sure the destination directory exists
  if ! [ -d  ${wm_desktopfile_dir} ] ; then
      mkdir  ${wm_desktopfile_dir}
  fi                                                        &&

  # install the windowmanagers desktop file
  if [ -f ${SCRIPT_DIRECTORY}/${SPELL}.desktop ] ; then
    if ! [ -e ${wm_desktopfile_dir}/${SPELL}.desktop ]; then
      install  -m  755  ${SCRIPT_DIRECTORY}/${SPELL}.desktop   \
                        ${wm_desktopfile_dir}
    fi
  fi
}

#---------------------------------------------------------------------
## Sets the current script to run only one make job
#---------------------------------------------------------------------

function make_single ()
{
  JOBS_PER_HOST=0  &&
     MAKE_NJOBS=1
}

#---------------------------------------------------------------------
## Re-enables the normal Sorcery make (cancels single_make)
#---------------------------------------------------------------------

function make_normal ()
{
  source $COMPILE_CONFIG
}

#---------------------------------------------------------------------
## @param shellname
## @param full path to shell
##
## Adds a shell to /etc/shells and optionally to qingy's sessions
#---------------------------------------------------------------------
function install_shell ()
{
  local qingy_session_dir="${INSTALL_ROOT}/etc/qingy/sessions"

  if [ -z "$1" ] ; then
    message "${PROBLEM_COLOR}no shell name specified, aborting${DEFAULT_COLOR}"
    return 1
  fi &&
  if [ ! -e "$2" ] ; then
    message "${PROBLEM_COLOR} $2 isn't executable, no use adding it as a shell${DEFAULT_COLOR}"
    return 1
  fi &&

  #installing shell into /etc/shells
  message "installing $1 into /etc/shells"
  if ! ( grep -q "^${2}$" ${INSTALL_ROOT}/etc/shells ) ; then
    echo "$2" >> ${INSTALL_ROOT}/etc/shells
  fi || return 1

  #installing shell into qingy's session dir if it's installed
  if ( spell_ok qingy ) && ! [ -f ${qingy_session_dir}/$1 ] ; then
    message "installing $1 into $qingy_session_dir"
    echo "$2" > ${qingy_session_dir}/$1 &&
    chmod 0755 ${qingy_session_dir}/$1
  fi
}

#---------------------------------------------------------------------
## @param shellname
## @param full path to shell
##
## Removes a shell from /etc/shells and optionally from qingy's sessions
#---------------------------------------------------------------------
function remove_shell ()
{
  local qingy_session_dir="${INSTALL_ROOT}/etc/qingy/sessions"

  if [ -z "$1" ] ; then
    message "${PROBLEM_COLOR}no shell name specified, aborting${DEFAULT_COLOR}"
    return 1
  fi &&
  if [ -z "$2" ] ; then
    message "${PROBLEM_COLOR}no shell path specified, aborting${DEFAULT_COLOR}"
    return 1
  fi &&

  #removing shell from /etc/shells
  if  [  -f  /etc/shells  ]  ;  then
    sedit "\:^$2$:d"  /etc/shells
  fi

  # and optionally from qingy's session dir
  if [ -f ${qingy_session_dir}/$1 ] ; then
    message "removing $1 from $qingy_session_dir"
    rm -f ${qingy_session_dir}/$1
  fi
}


#---------------------------------------------------------------------
## replacement for config_query_string to work around a short timeout
## when entering long strings (hostnames, organisation names)
#---------------------------------------------------------------------
function config_query_long_string() {
    local ANSWER
    local DELAY=5 
    if config_get_option "$1" ANSWER; then
        # option allready answered in config
        echo -e "[[ ${QUERY_COLOR}$2${DEFAULT} -> '${QUERY_COLOR}$ANSWER${DEFAULT}' ]]"
    else
        query_string ANSWER "$2" "$3"
        read -t $DELAY -n 1 ANSWER_first
        if [[ $ANSWER_first ]] ; then 
          read ANSWER_rest
        fi
        ANSWER="${ANSWER_first}${ANSWER_rest}"
        config_set_option "$1" "$ANSWER"
    fi
    return 0
}


#---------------------------------------------------------------------
#
## Returns the location that the www files are installed to
## An attempt to get install_www_files configurable
#---------------------------------------------------------------------
function get_install_www_files_dir ()
{
  echo "/usr/share/www/"
}


#---------------------------------------------------------------------
## @param Directory with files we might want to install
## @param Destination directory (optional)
##
## Installs files to WWW_DEST ($INSTALL_ROOT/usr/share/www/$SPELL-$VERSION) and
## sets up proper www-data permissions
## Optionally the second parameter will override WWW_DATA (and make
## sure INSTALL_ROOT exists only once in the WWW_DATA)
#---------------------------------------------------------------------
function  install_www_files ()
{
  if  [  !  -z  $2  ];  then
    #
    # Just in case the destination already includes INSTALL_ROOT, remove it
    #
    local  WWW_DEST="$INSTALL_ROOT/${2/\$INSTALL_ROOT/}"
  else
    local  WWW_DEST="$INSTALL_ROOT$(get_install_www_files_dir)$SPELL-$VERSION"
  fi  &&

  #
  # Make sure the www-data user exists
  # Not sure if this will work :/
  create_account www-data

  #
  # Make sure WWW_DEST exists
  #
  if  [  !  -d  "$WWW_DEST"  ];  then
    if  [  !  -d  "${WWW_DEST/\/$SPELL-$VERSION/}"  ];  then
      mkdir  -p  "${WWW_DEST/\/$SPELL-$VERSION/}"                   &&
      chmod  0755                 "${WWW_DEST/\/$SPELL-$VERSION/}"  &&
      chown  www-data:www-data    "${WWW_DEST/\/$SPELL-$VERSION/}"
    fi  &&

    mkdir  -p  "$WWW_DEST"                   &&
    chmod  0755                 "$WWW_DEST"  &&
    chown  www-data:www-data    "$WWW_DEST"
  fi  &&

  # find $@ | while read file; do install ... $file ...; done
  # find  $1  -type  -f  |  while  read  file;  do
  for  www_file  in  `find  $1  -type  f`;  do
    if  install_config_file  "$www_file"   "$WWW_DEST/$www_file";  then
      chmod  u+r,g+r,o-wx         "$WWW_DEST/$www_file"  &&
      chown  www-data:www-data    "$WWW_DEST/$www_file"
    fi
  done
  #
  # Warning message about new location for www files
  # Remove around 2005-08-02 (one month in test, another in stable, supposedly)
  #
  message  "${MESSAGE_COLOR}Your web files have been moved out of the"        \
           "APACHE specific locations (apache2/htdocs, httpd/htdocs, etc.)"   \
           "and into a shared, non-DocumentRoot $INSTALL_ROOT$(get_install_www_files_dir)"  \
           "directory. You can modify your web server to point there for"     \
           "these files now.${DEFAULT_COLOR}"
}

#---------------------------------------------------------------------
## Removes traces of NSPR and NSS from Mozilla-based software
## TODO move patch to a central place
#---------------------------------------------------------------------
function mozilla_remove_nspr_nss() {
  message 'Checking Mozilla source code...' &&
  [[ "$(basename $(pwd))" == mozilla ]] &&
  message 'Checking the spell...' &&
  if  [[ -f $SCRIPT_DIRECTORY/security_manager_makefile.diff ]];  then
    patch -p1 < $SCRIPT_DIRECTORY/security_manager_makefile.diff
  else
    true  # No security patch needed
  fi  &&
  rm -fr dbm nsprpub security/nss &&
  # exclude DBM for top-level modules and don't build it
  sedit 's@\<dbm\>@@g' Makefile.in &&
  sedit 's@\<dbm\>@@g' build/unix/modules.mk &&
  # don't define NSS libraries as dependencies and don't look for them in the tree
  sedit 's@$(DIST)/lib/$(LIB_PREFIX)\(crmf\|dbm\|nss3\|softokn3\|smime3\|ssl3\)\.$(LIB_SUFFIX)@-l\1@g' config/config.mk &&
  sedit 's@NSS_DEP_LIBS\s*=@__undefine_\0@g' config/config.mk &&
  # align the makefile-s
  find -name Makefile.in | while read __MAKEFILE; do
    # use system NSPR's and NSS's headers
    # option `--with-system-nspr' doesn't do it everywhere
    sedit 's@-I\S*\(nss\|nspr\)\>@-I/usr/include/\1@g' $__MAKEFILE
  done
}

#-------------------------------------------------------------------------
## Returns the kernel version checks linux then linux-new (for now) and
## then uname for the kernel version
#-------------------------------------------------------------------------
function get_kernel_version()
{
  local KVER=$(installed_version linux)
  if [[ $KVER ]] ; then
    echo $KVER
  else
    KVER=$(installed_version linux-new)
    if [[ $KVER ]] ; then
      echo $KVER
    else
      KVER=$(grep version /usr/src/linux/.config | cut -d: -f2 | cut -d ' ' -f2)
      if [ $KVER ] && [ -d "/lib/modules/${KVER}/build" ] ; then
         echo $KVER
      else
        KVER=$(uname -r)
        echo $KVER
      fi
    fi
  fi
}

#---------------------------------------------------------------------------
## Invokes the unamechange spell any spell that uses this should depend on
## unamechange otherwise this function does nothing.
## to use this function simply call then change the variables listed ro have
## any call to uname return that value
#--------------------------------------------------------------------------
function invoke_uname_change()
{
  if [[ $(installed_version unamechange) ]] ; then
    export UNAME_CHANGE_SYSNAME=$(uname -s)
    export UNAME_CHANGE_NODENAME=$(uname -n)
    export UNAME_CHANGE_RELEASE=$(uname -r)
    export UNAME_CHANGE_VERSION=$(uname -v)
    export UNAME_CHANGE_MACHINE=$(uname -m)
    export UNAME_CHANGE_DOMAINNAME=$(uname -o)

    export LD_PRELOAD="${LD_PRELOAD} /usr/lib/unamechange.so"
  fi
}

#-------------------------------------------------------------------------
## Returns the state of the system back to normal after calling 
## invoke_uname_change unset's all environmental vars and returns
## LD_PRELOAD back to normal
#-------------------------------------------------------------------------
function devoke_uname_change()
{
  if [[ $(installed_version unamechange) ]] ; then
    unset UNAME_CHANGE_SYSNAME
    unset UNAME_CHANGE_NODENAME
    unset UNAME_CHANGE_RELEASE
    unset UNAME_CHANGE_VERSION
    unset UNAME_CHANGE_MACHINE
    unset UNAME_CHANGE_DOMAINNAME

    export LD_PRELOAD="${LD_PRELOAD/\/usr\/lib\/unamechange.so/}"
  fi
}

#-----------------------------------------------------------------------
## Get the kernel config status of the kernel option specified by $2.
## Kernel version is given by $1.
## 
## If a configure file is found print the requested config status (if
## any) and return 0, otherwise return 1.
##-----------------------------------------------------------------------
function get_kernel_config_ver()
{
  local i
  for i in /proc/config /boot/config-"$1" /lib/modules/"$1"/build/.config
  do
    if [ -f "$i" ]; then
      cat "$i" && break
    elif [ -f "$i.gz" ]; then
      zcat "$i.gz" && break
    elif [ -f "$i.bz2" ]; then
      bzcat "$i.bz2" && break
    elif [ -f "$i.xz" ]; then
      xzcat "$i.xz" && break
    elif [ -f "$i.lzma" ]; then
      xzcat "$i.lzma" && break
    fi
  done | grep "^$2=" | awk -F= '{ if ($2) { print $2 }; exit (!$2) }'
}

#-----------------------------------------------------------------------
## Get the running kernel config status of the running kernel option
## given by $1.
##
## See also: get_specified_kernel_config
#-----------------------------------------------------------------------
function get_running_kernel_config()
{
  get_kernel_config_ver $(get_running_kernel_version) "$1"
}

#-------------------------------------------------------------------------
## Get the config status of some part of the kernel sorcery says is 
## installed. Used by spells that have linux triggers.
##
## $1 string Config var to look for
#-------------------------------------------------------------------------
function get_sorcery_kernel_config()
{
  get_kernel_config_ver $(get_kernel_version) || echo "-1"
}


#-------------------------------------------------------------------------
## Compatibility code for gracefully failing if the user uses an older
## version of sorcery with a spell that calls unpack_file.
#-------------------------------------------------------------------------
declare -f unpack_file &> /dev/null ||
function unpack_file() {
  message "This spell uses a function only available in sorcery 1.12.2 or newer, please update."
  return 1
}

#-------------------------------------------------------------------------
## Default build for Python2 spell.
#-------------------------------------------------------------------------
function default_build_python() {
  $PYTHON2 setup.py build "$@"
}

#-------------------------------------------------------------------------
## Default build for Python 3 spell.
#-------------------------------------------------------------------------
function default_build_python3() {
  $PYTHON3 setup.py build "$@"
}

#-------------------------------------------------------------------------
## Default install for Python spell.
#-------------------------------------------------------------------------
function default_install_python() {
  $PYTHON2 setup.py install --root "$INSTALL_ROOT/" "$@"
}

#-------------------------------------------------------------------------
## Default install for Python 3 spell.
#-------------------------------------------------------------------------
function default_install_python3() {
  $PYTHON3 setup.py install --root "$INSTALL_ROOT/" "$@"
}

#-------------------------------------------------------------------------
## Default build for Perl spell.
#-------------------------------------------------------------------------
function default_build_perl() {
  perl Makefile.PL $OPTS &&
  make
}

#---
## disable_pic
## A function to smartly disable -DPIC and -fPIC flags
## has one optional parameter: force which forces disable
#---

disable_pic() {
  if [[ "${SMGL_COMPAT_ARCHS[1]}" != "x86_64" ]] &&
     [[ "${SMGL_COMPAT_ARCHS[1]}" != "alpha"  ]] ||
     [[ "$1" == "force" ]]
  then
    CFLAGS=${CFLAGS//-fPIC}                    &&
    CFLAGS=${CFLAGS//-DPIC}                    &&
    CXXFLAGS=${CXXFLAGS//-fPIC}                &&
    CXXFLAGS=${CXXFLAGS//-DPIC}
  fi
}

# FUnction to tag config files that cannot be tagged by the normal install_config_file method
# do NOT call check_if_modified or mark_file_modified ANYWHERE ELSE!!!
# # THIS function will go away when it migrates down from devel sorcery
# # David Kowis - 11-17-2006
#  $1 is the full path to the config file you want tracked.
#  CALL THIS BEFORE YOU DO THE INSTALLING. You can see the postfix spell for an example.
declare -f note_config_files &>/dev/null ||
function note_config_files() {
  if check_if_modified "$1"; then 
    mark_file_modified "$1" 
  fi
}

# Functions for default_build and default_install for waf based build systems
# please use this one instead of maunaly calling waf when possible
# Disabled caching as this has GREAT potential for borkage
# and waf is fast without it as well

function waf_build() {
  ./waf configure --prefix=${INSTALL_ROOT}/usr \
                  --mandir=${INSTALL_ROOT}/usr/share/man \
                  -j $MAKE_NJOBS \
                 --nocache $OPTS &&
  ./waf build
}

function waf_install() {
  ./waf install
}

# spells in several  sections now need cmake or qt4
cmake_build() {
  cd $SOURCE_DIRECTORY  &&
  mkdir -p build        &&
  cd build              &&
  prepare_cmake_flags   &&
  cmake -DCMAKE_INSTALL_PREFIX=$INSTALL_ROOT/usr \
        -DCMAKE_INSTALL_LIBDIR=lib \
        -DCMAKE_INSTALL_MANDIR=share/man \
        -DCMAKE_PREFIX_PATH=share/apps/cmake/modules \
        -DSYSCONFDIR=$INSTALL_ROOT/etc \
        -DCMAKE_BUILD_TYPE=Release \
         $OPTS ../  &&
  make
}

qt4_cmake_build() {
  QTDIR="${QTDIR:-$INSTALL_ROOT/usr}"
  PATH="$QTDIR/bin/qt4:$PATH"
  cmake_build
}

qt4_build() {
  QTDIR="${QTDIR:-$INSTALL_ROOT/usr}"
  PATH="$QTDIR/bin/qt4:$PATH"
  qmake PREFIX=$INSTALL_ROOT/usr &&
  make
}

# cmake flags use : which is an internal sorcery delimiter.
# In order to facilitate the passing of depends flags, use % instead and call
# this function at the start of BUILD. Don't use it anywhere else.
# Example: 
# DEPENDS: depends kdelibs4 -DCRUFT%BOOL=FALSE; ...
# BUILD: prepare_cmake_flags; ...
function prepare_cmake_flags()
{
  OPTS="${OPTS//%/:}"
}


#-------------------------------------------------------------------------
## Print the version of the running kernel.
#-------------------------------------------------------------------------
function get_running_kernel_version()
{
  # Try the proc interface first because it returns the version of the
  # running kernel even when unamechange is invoked.
  [[ -f /proc/sys/kernel/osrelease ]] && cat /proc/sys/kernel/osrelease ||
    uname -r
}

#-------------------------------------------------------------------------
## Print the version of the installed linux spell or, lacking that, "-1".
## This is just a wrapper for 'installed_version linux' with the exception
## that this will always print something and not return false.
#-------------------------------------------------------------------------
function get_sorcery_kernel_version()
{
  installed_version linux || echo "-1"
}

#-----------------------------------------------------------------------
## Print the kernel config status of the installed linux spell for the 
## option defined in $1.
## If the linux spell is installed and a configure file is found print
## the requested config status (if any) and return 0, otherwise return
## 1.
#-----------------------------------------------------------------------
function get_sorcery_kernel_config()
{
  local KVER="$(installed_version linux)"
  if [[ $KVER ]]
  then
    get_kernel_config_ver "$KVER" "$1"
  else
    return 1
  fi
}

#-----------------------------------------------------------------------
## Print the kernel config status for the option defined in $1 from the
## kernel defined in USE_KERNEL_VERSION or, lacking that, from either
## the installed linux spell or the running kernel.
## If a configure file is found print the requested config status (if
## any) and return 0, otherwise return 1.
#-----------------------------------------------------------------------
function get_kernel_config()
{
  if [[ $USE_KERNEL_VERSION ]]
  then
    get_kernel_config_ver "$USE_KERNEL_VERSION" "$1"
  else
    get_sorcery_kernel_config "$1" || get_running_kernel_config "$1"
  fi
}

#---
## Select SCM branch. If no parameter is given, it assumes a single scm branch.
##
## Saves selected branch in ${SPELL}_BRANCH, and auto-update setting on
## ${SPELL}_AUTOUPDATE.
##
## Usage:
##   . ${GRIMOIRE}/FUNCTIONS &&
##   prepare_select_branch [branch] ...
#---
function prepare_select_branch() {
  local spell=$(get_up_spell_name) &&
  local branch="$spell"_BRANCH &&

  if [[ $# > 1 ]]; then
    config_query_list $branch "Select one of the available branches:" "$@"
  else
    eval $branch=\""${1:-scm}"\"
  fi &&

  if [[ "${!branch/-*}" = scm ]]; then
    config_query "$spell"_AUTOUPDATE 'Automatically update on every system update?' n
  fi
}

#---
## Get uppercase spell name with _ instead of -
#---
function get_up_spell_name() {
  echo ${1:-$SPELL} | tr "a-z-" "A-Z_"
}

# Move SPELL_OPTS to OPTS
# basicly generic OPTS="$SPELL_OPTS $OPTS"
function prepare_opts() {
  # this is here so that config_query_option can be used without
  # extra junk
  local up_spell_name=$(get_up_spell_name)     &&
  local tempopts="${up_spell_name}_OPTS"                  &&
  OPTS="${!tempopts} $OPTS"
}

#---
## Default configure
#---

function default_build_configure() {
  prepare_opts                                            &&
  OPTS="$OPTS --build=${BUILD}"                           &&
  #If these switches are used, they _may_ stop distcc and ccache from working
  # for some spells (bug 3798)
  #  We could write wrappers for all of the possible binaries
  [[ $CROSS_INSTALL == on ]] && OPTS="$OPTS --host=${HOST}"

  ./configure --prefix=${INSTALL_ROOT}/usr                 \
          --sysconfdir=${INSTALL_ROOT}/etc                 \
       --localstatedir=${INSTALL_ROOT}/var                 \
              --mandir=${INSTALL_ROOT}/usr/share/man       \
             --infodir=${INSTALL_ROOT}/usr/share/info      \
                       $OPTS
}

#---
## Default make
#---

function default_build_make(){
  make
}

#---
## Compare if one version is less than another (uses sort from coreutils)
#---
function is_version_less() {
  [ ! $(echo -e "$1\n$2" | sort --version-sort | head -1) = "$2" ]
}

#---
## Simple version check with force depends
## @params $1 - the spell to check the version of
## @params $2 - the simple version to check against
##              (if proper is 2.1.0 then this is 210)
## @params $3 - how many digits to compare against from left to right
##              defaults to 99 digits
#---
function simple_version_check_force_depends(){
if spell_ok $1 &&
   [[ $(installed_version $1|sed -e 's:^0\.::' -e 's:\.::g' | cut -c-${3:=99}) -lt $2 ]]
  then
    force_depends $1
fi
}

. $GRIMOIRE/glselect.function
. $GRIMOIRE/bzr_download.function
. $GRIMOIRE/hg_download.function