#!/bin/sh
#
# Copyright (C) 2008 Nokia Corporation.
# Licensed under GPL version 2
#
# Generate locale definition files under $HOME/.scratchbox2/ in extracted
# form.  We need to do this because otherwise it is impossible to map
# locales under sb2 to correct target using environment variable
# $LOCPATH.  This script can be used to generate locales for targets
# and tools.
#
# For target locales the generated files are placed under:
#     $HOME/.scratchbox2/$sbox_target/locales
# and for tools the place is:
#     $HOME/.scratchbox2/<BASENAME OF TOOLS ROOT>/locales.
#
# $LOCPATH is the only way to change path of locale files when using
# glibc (other systems use $NLSPATH but we don't need to do this extraction
# there).  Problem is that when $LOCPATH is defined, glibc doesn't want
# to read file named '$LOCPATH/locale-archive' but it assumes that files
# under $LOCPATH are in extracted form.
#
# This is only needed when we are running binaries without cpu transparency
# e.g native binaries.
#

prog="$0"
progbase=`basename $0`

generate_localization_files()
{
	local rootdir
	local gendir
	local force

	rootdir=$1
	gendir=$2
	force=$3

	if [ -d $gendir ]; then
		if [ $force -eq 0 ]; then
			return
		fi
	fi

	#
	# If there is no locale-archive in target root, we don't
	# need to generate anything.
	#
	if [ ! -f $rootdir/usr/lib/locale/locale-archive ]; then
		return
	fi

	# does localedef exist?
	if [ ! -x $rootdir/usr/bin/localedef ]; then
		# nothing to do
		return
	fi

	# list currently archived locales
	archived_locales=`$rootdir/usr/bin/localedef --list-archive \
	    --prefix $rootdir`

	if [ -z "$archived_locales" ]; then
		return
	fi

	echo "Generating locales under '$gendir'"

	/bin/mkdir -p $gendir > /dev/null 2>&1

	#
	# Now we force localedef to use our target_root as
	# root for all locale operations.
	#
	I18NPATH=$rootdir/usr/share/i18n; export I18NPATH
	LOCPATH=$rootdir/usr/lib/locale; export LOCPATH

	#
	# Find out supported variations for a locale and generate
	# the files.  We generate only UTF-8 versions of locales.
	#
	for l in $archived_locales; do
		# strip off anything that is not language name
		loc=`echo $l | sed 's/\..*$//'`
		echo -n "generating locale $loc ..."
		$rootdir/usr/bin/localedef \
		    --no-archive \
		    -f UTF-8 \
		    -c \
		    -i $loc \
		    $gendir/$loc > /dev/null 2>&1
		echo " done"
	done

	unset I18NPATH
	unset LOCPATH
}

usage()
{
	cat <<EOF
Usage: $progbase [OPTION]

Options:
   -f    forces generation of locales even if they already exists
   -T    generates locales for current tools instead of target
   -h    displays this help text

Generates locale specific files based on archived ones under
(target|tools)_root/usr/lib/locale/locale-archive.  These
files are used to map locales into (target|tools)_root by
scratchbox2.

You need to do this only with targets that have same architecture
than host has.  Binaries that are run through cpu transparency get
mapped correctly.  This applies also for tools distribution.
EOF
	exit 1
}

error_not_inside_sb2()
{
	echo "SB2: $progbase: This program can only be used from inside"
	echo "the scratchbox 2'ed environment"
	exit 1
}

if [ -z "$SBOX_SESSION_DIR" ]; then
	error_not_inside_sb2
fi

. $SBOX_SESSION_DIR/sb2-session.conf

args=`getopt hfT $*`
if [ $? -ne 0 ]; then
        usage
fi

force=0
tools=0
for a in $args; do
	case $a in
	-f)
		force=1
		shift
		;;
	-T)
		tools=1
		shift
		;;
	--)
		break
		;;
	*)
		usage
		;;
	esac
done

if [ $tools -eq 1 ]; then
	rootdir="$sbox_tools_root"
	tools_basename=`/usr/bin/basename $rootdir`
	localedir="$HOME/.scratchbox2/$tools_basename/locales"
else
	if [ $force -eq 0 -a -n "$sbox_cputransparency_method" ]; then
		exit 0
	fi
	rootdir="$sbox_target_root"
	localedir="$HOME/.scratchbox2/$sbox_target/locales"
fi

generate_localization_files $rootdir $localedir $force