#!/usr/bin/perl

 # SQL-DK

 # Copyright © 2013 František Kučera (frantovo.cz)

 # 

 # This program is free software: you can redistribute it and/or modify

 # it under the terms of the GNU General Public License as published by

 # the Free Software Foundation, either version 3 of the License, or

 # (at your option) any later version.

 # 

 # This program is distributed in the hope that it will be useful,

 # but WITHOUT ANY WARRANTY; without even the implied warranty of

 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 # GNU General Public License for more details.

 # 

 # You should have received a copy of the GNU General Public License

 # along with this program. If not, see <http://www.gnu.org/licenses/>.

 # Parses Java source code from STDIN and generates script for BASH completion

 # Input (in this order):

 #	info/globalcode/sql/dk/Constants.java

 #	info/globalcode/sql/dk/formatting/*

 #	info/globalcode/sql/dk/CLIParser.java

 # TODO: support database/formatter names with spaces

 use strict;

 use warnings;

 my $configDir = "~";

 while (<>) {

 	if (/"(.*?)".*? \/\/\s*bash-completion:dir/) {

 		$configDir .= "/$1";

 		last;

 	}

 }

 my $databasesFile  = "$configDir/bash-completion/databases";

 my $formattersFile = "$configDir/bash-completion/formatters";

 my $defaultFormatterFile = "$configDir/bash-completion/default-formatter";

 my $formatterPropertiesDir = "$configDir/bash-completion/formatter-properties";

 print '#have sql-dk &&

 _sql_dk_bash_completion_find_formatter() {

 	local previous

 	for token in "$@"; do

 		if [ "x$previous" == "x--formatter" ]; then

 			echo -n "$token";

 			return 0;

 		fi

 		previous="$token";

 	done

 	if [ -f '.$defaultFormatterFile.' ]; then

 		cat '.$defaultFormatterFile.'

 	fi

 }

 _sql_dk_bash_completion_formatter_property_name() {

 	if [ -n "$formatter" ]; then # TODO: this does not match formatter name in apostrophes or quotes

 		local formatter_dir='.$formatterPropertiesDir.'/$formatter

 		if [ -d  $formatter_dir ]; then

 			ls -1 $formatter_dir;

 		fi

 	fi

 }

 _sql_dk_bash_completion_formatter_property_choice() {

 	local property="${COMP_WORDS[COMP_CWORD-1]}";

 	local formatter_dir='.$formatterPropertiesDir.'/$formatter

 	local property_choices_file=$formatter_dir/$property/choices;

 	if [ -f $property_choices_file ]; then

 		cat $property_choices_file;

 	fi

 }

 _sql_dk_bash_completion() {

 	local cur prev formatter

 	COMPREPLY=()

 	cur=${COMP_WORDS[COMP_CWORD]}

 	prev=${COMP_WORDS[COMP_CWORD-1]}

 	case "$prev" in

 	--db | --test-connection | --list-jdbc-properties)

 		if [ -f '.$databasesFile.' ]; then

 			COMPREPLY=( $( compgen -W " $( cat '.$databasesFile.' ) " -- $cur ) )

 			return 0

 		fi

 		;;

 	--formatter | --list-formatter-properties)

 		if [ -f '.$formattersFile.' ]; then

 			COMPREPLY=( $( compgen -W " $( cat '.$formattersFile.' ) " -- $cur ) )

 		else

 			COMPREPLY=( $( compgen -W "

 ';

 while (<>) {

 	if (/"(.*?)".*? \/\/\s*bash-completion:formatter/) {

 		print "				$1\n";

 	}

 	last if (/\/\/\s*bash-completion:options/);

 }

 print '				" -- $cur ) );

 		fi

 		return 0

 		;;

 	--formatter-property)

 		formatter=$( _sql_dk_bash_completion_find_formatter "${COMP_WORDS[@]}" );

 		COMPREPLY=( $( compgen -W "$(_sql_dk_bash_completion_formatter_property_name )" -- $cur ) ); 

 		return 0;

 		;;

 	esac;

 	if [ "x${COMP_WORDS[COMP_CWORD-2]}" == "x--formatter-property" ]; then

 		formatter=$( _sql_dk_bash_completion_find_formatter "${COMP_WORDS[@]}" );

 		COMPREPLY=( $( compgen -W "$(_sql_dk_bash_completion_formatter_property_choice )" -- $cur ) ); 

 		return 0;

 	fi

 	COMPREPLY=( $( compgen -W "

 ';

 while (<>) {

 	if (/"(.*?)".*? \/\/\s*bash-completion:option/) {

 		print "			$1\n";

 	}

 }

 print '		" -- $cur ) )

 	return 0

 }

 complete -F _sql_dk_bash_completion sql-dk

 ';