Hi have an xml file which is like:
<tag1>
<tag2>

<tag3>data3
</tag3>

<tag4>data4
</tag4>

</tag2>
</tag1>

i need to convert it to the standard xml format
<tag1>
<tag2>
<tag3>data3</tag3>
<tag4>data4</tag4>
</tag2>
</tag1>

coming to the point,i need to remove the new line character only for those fields which have data,
I used the reg nawk to remove new line but it is doing it for all the tags:

nawk '{ if ( $0 !~ /<\// && NR > 1 ) { printf "\n"; } printf $0; } END { printf "\n"; }' file.xml >abc.xml

and i am getting
<tag1>
<tag2>
<tag3>data3</tag3>
<tag4>data4</tag4></tag2></tag1>

I need to remove the new line character for lines having data.
could someone help me out here,
Thanks