#!/bin/bash
#
# stardics-dict-config.sh 0.1
# Copyright 2009, Nikita Melnichenko
# License: GPL-2 (http://opensource.org/licenses/gpl-license.php)
#
# Utility for management of stardict dictionary groups.
# Run without arguments to display usage information.

# settings
stardict_cfg_path="$HOME/.stardict/stardict.cfg"
dict_config_xml_path="$HOME/.stardict/dict_config.xml"

# print usage
function usage ()
{
	echo "$0 COMMAND"
	echo "COMMAND is one of 'extract', 'merge', 'remove'"
	echo "  extract:   extract dictionary XML config from $stardict_cfg_path to $dict_config_xml_path"
	echo "  merge:     merge dictionary XML config back to $stardict_cfg_path"
	echo "  remove:    remove some options from $stardict_cfg_path to force generation of default dictionary group during the next start of stardict"
	echo
	echo "This script creates backups of altered files before modification."
	echo "Please, close stardict before running this script."
}

# extract dict config from stardict configuration $stardict_cfg_path to $dict_config_xml_path
function stardict_extract_dics ()
{
	cp "$dict_config_xml_path" "$dict_config_xml_path.old" >/dev/null 2>&1
	grep '^dict_config_xml=' "$stardict_cfg_path" \
	| LANG=C sed -e 's/^dict_config_xml=//' -e 's/></>\n</g' \
	| LANG=C sed -e 's,^\(</\?\(scan\|query\)dict\),\t\1,' -e 's,^\(<\(local\|net\|virtual\)dict\),\t\t\1,' \
	> "$dict_config_xml_path"
}

# merge extracted dict config with stardict configuration $stardict_cfg_path
function stardict_merge_dics ()
{
	local config_line=$(sed -e 's/^[ \t]*//' "$HOME/.stardict/dict_config.xml" \
	| sed -e :a -e 'N; s/\n//; ta' \
	| sed -e 's/^/dict_config_xml=/')
	
	local line_num=`grep -n 'dict_config_xml' "$stardict_cfg_path" | sed -e 's/^\([0-9]*\):.*$/\1/'`
	
	sed -e "1,"$((line_num-1))"!d" "$stardict_cfg_path" > "$stardict_cfg_path".new
	echo "$config_line" >> "$stardict_cfg_path".new
	sed -e $((line_num+1))",\$!d" "$stardict_cfg_path" >> "$stardict_cfg_path".new
	
	mv "$stardict_cfg_path" "$stardict_cfg_path".old
	mv "$stardict_cfg_path".new "$stardict_cfg_path"
}

# remove dict_config_xml and dict_order_list to force generation of default dictionary group
function stardict_remove_dics ()
{
	cp "$stardict_cfg_path" "$stardict_cfg_path".old >/dev/null 2>&1
	sed -e '/^dict_config_xml=/d' -e '/^dict_order_list=/d' -i "$stardict_cfg_path"
}

if [ "$1" == "extract" ]
then
	stardict_extract_dics
	exit
fi

if [ "$1" == "merge" ]
then
	stardict_merge_dics
	exit
fi

if [ "$1" == "remove" ]
then
	stardict_remove_dics
	exit
fi

usage