#! /bin/bash

#create a list of all languages with existing translation of Name
if [ ! -f langs.txt ]; then 
	for i in menu-data/*desktop; do
	awk -F [][] '/^Name/ {print $2}' $i >> langs.txt;
	done
	sort -u langs.txt > po/LINGUAS
	echo "creating po/LINGUAS done"
fi

DIRS="\
menu-data-additional 
menu-data"

cat po/LINGUAS | while read LANG; do 
	OUTFILE=po/$LANG.po
	#remove existing po files
	if [ -f $OUTFILE ] ; then
		rm $OUTFILE;
		#echo "removed $OUTFILE";
	fi
	OUTFILE=po/$LANG-tmp.po
	#add some content header info to make gettext happy
	echo "msgid \"\"" > $OUTFILE
	echo "msgstr \"\"" >> $OUTFILE
	echo "\"Project-Id-Version: app-install-data\n\"" >> $OUTFILE
	echo "\"PO-Revision-Date: \n\"" >> $OUTFILE
	echo "\"Last-Translator: \n\"" >> $OUTFILE
	echo "\"Language-Team: \n\"" >> $OUTFILE
	echo "\"MIME-Version: 1.0\n\"" >> $OUTFILE
	echo "\"Content-Type: text/plain; charset=UTF-8\n\"" >> $OUTFILE
	echo "\"Content-Transfer-Encoding: 8bit\n\"" >> $OUTFILE
	echo "" >> $OUTFILE
done

for d in $DIRS; do
	for FILE in $d/*desktop; do
		# some devs are still not using utf-8...
		ENC=`file -i $FILE | cut -d " " -f3`;
		if [ "$ENC" = "charset=iso-8859-1" ] ; then 
			iconv -c -f iso-8859-1 -t utf-8 $FILE > $FILE-u8;
			mv $FILE-u8 $FILE;
			echo "converted $FILE";
		fi

		for FIELD in Name Comment GenericName ; do 
			#extract original string
			MSGID=`grep "^$FIELD=" $FILE | cut -d = -f2`

			if [ -n "$MSGID" ]; then 
				#escape ", if any
				MSGID=`echo $MSGID | sed -e 's/\"/\\\"/g'`

				# filter out the languages the field is translated into
				# fixme: this could be faster...
				awk -v field=^$FIELD '{FS="[][]"} $0 ~ field  {if ($2 != "") print $2}' $FILE | while read LANG; do 
					#is it translated?
					MSGSTR=`awk -v field=^$FIELD -v lang=$LANG '{FS="[],[,=]"} $0 ~ field {if ($2 == lang) {print $4}}' $FILE`
					if [ -n "$MSGSTR" ] ; then
						# escape " and \, if any. the latter is necessary because of RTL langugaes - ar and he
						# fixme: why does not work the last sed expression?
						MSGSTR=`echo $MSGSTR | sed -e 's/\"/\\\"/g'` #-e 's/\\/\\\\/'`

						# write out what we have, no translation = no output
						OUTFILE=po/$LANG-tmp.po
						echo "#. $FILE:$FIELD" >> $OUTFILE;
						echo msgid \"$MSGID\" >> $OUTFILE;
						echo msgstr \"$MSGSTR\" >> $OUTFILE;
						echo "" >> $OUTFILE;

					fi
				done
			fi
		done
		echo "processing $FILE done"
	done
done

# there will be duplicate messages, get rid of those
cat po/LINGUAS | while read LANG; do 
	msguniq --use-first po/$LANG-tmp.po > po/$LANG.po;
	echo "msguniq done for $LANG"
	# not needed anymore
	rm po/$LANG-tmp.po;
done