#!/bin/sh
# Run this before autogen.sh, to pull in all of the gnulib-related bits.

usage() {
  echo >&2 "\
Usage: $0 [OPTION]...
Bootstrap this package from the checked-out sources.

Options:
 --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
                          sources reside.  Use this if you already
                          have gnulib sources on your machine, and
                          do not want to waste your bandwidth downloading
                          them again.

If the file bootstrap.conf exists in the current working directory, its
contents are read as shell variables to configure the bootstrap.

Running without arguments will suffice in most cases.
"
}

# Configuration.

# List of gnulib modules needed.
gnulib_modules=

extract_package_name='
  /^AC_INIT(/{
     /.*,.*,.*, */{
       s///
       s/[][]//g
       s/)$//
       p
       q
     }
     s/AC_INIT(\[*//
     s/]*,.*//
     s/^GNU //
     y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
     s/[^A-Za-z0-9_]/-/g
     p
  }
'
package=`sed -n "$extract_package_name" configure.ac` || exit
gnulib_name=lib$package

build_aux=build-aux
source_base=lib
m4_base=m4
doc_base=doc
tests_base=tests

# Extra files from gnulib, which override files from other sources.
gnulib_extra_files="
        $build_aux/install-sh
        $build_aux/missing
        $build_aux/mdate-sh
        $build_aux/texinfo.tex
        $build_aux/depcomp
        $build_aux/config.guess
        $build_aux/config.sub
        doc/INSTALL
"

# Additional gnulib-tool options to use.  Use "\newline" to break lines.
gnulib_tool_option_extras=

# Other locale categories that need message catalogs.
EXTRA_LOCALE_CATEGORIES=

# Additional xgettext options to use.  Use "\\\newline" to break lines.
XGETTEXT_OPTIONS='\\\
 --flag=_:1:pass-c-format\\\
 --flag=N_:1:pass-c-format\\\
 --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
'

# Override the default configuration, if necessary.
# Make sure that bootstrap.conf is sourced from the current directory
# if we were invoked as "sh bootstrap".
case "$0" in
  */*) test -r "$0.conf" && . "$0.conf" ;;
  *) test -r "$0.conf" && . ./"$0.conf" ;;
esac

# Parse options.

for option
do
  case $option in
  --help)
    usage
    exit;;
  --gnulib-srcdir=*)
    GNULIB_SRCDIR=`expr "$option" : '--gnulib-srcdir=\(.*\)'`;;
  *)
    echo >&2 "$0: $option: unknown option"
    exit 1;;
  esac
done

# Get gnulib files.

case ${GNULIB_SRCDIR--} in
-)
  echo "$0: getting gnulib files..."
  git submodule init || exit $?
  git submodule update || exit $?
  GNULIB_SRCDIR=.gnulib
  ;;
*)
  # Redirect the gnulib submodule to the directory on the command line
  # if possible.
  if test -d "$GNULIB_SRCDIR"/.git && \
	git config --file .gitmodules submodule.gnulib.url >/dev/null; then
    git submodule init
    GNULIB_SRCDIR=`cd $GNULIB_SRCDIR && pwd`
    git config --replace-all submodule.gnulib.url $GNULIB_SRCDIR
    echo "$0: getting gnulib files..."
    git submodule update || exit $?
    GNULIB_SRCDIR=.gnulib
  else
    echo >&2 "$0: invalid gnulib srcdir: $GNULIB_SRCDIR"
    exit 1
  fi
  ;;
esac

gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
<$gnulib_tool || exit

gnulib_tool_options="\
 --import\
 --no-changelog\
 --aux-dir $build_aux\
 --doc-base $doc_base\
 --lib $gnulib_name\
 --m4-base $m4_base/\
 --source-base $source_base/\
 --tests-base $tests_base\
 $gnulib_tool_option_extras\
"
echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
$gnulib_tool $gnulib_tool_options --import $gnulib_modules