Dear List-
I have discussed this issue earlier with you. In that time I have not
elaborated the logic and not got the right solution. It seems little bit
complex and I think we should use global variable but not sure. The logic
is based on DocBook's chunking rules. Below are the key points of the logic:
1. We are counting chunks of following elements <chapter>, <sect1>,
<sect2> and <sect3>
2. Count- It is count of those chunks which contains content.
3. Level - It is hierarchical number of the chunk (e.g. 1, 1.1, 1.2, 1.2.1,
etc) to enable the output file to be re-assembled in a hierarchical structure.
4. A rule should be devised that will prevent empty chunk being generated.
For example, the following XML would generate empty pages for the <book>
and <chapater> as they have no content. This is something we need to avoid
when the XSLT is devised, perhaps by combining lower content into an empty
chunk.
Note: Please read the comments of OUTPUT for better understanding
INPUT
<book>
<chapter count="1" level="1.1"><title>TITLE</title>
<sect1><title>TITLE</title>
<sect2><title>TITLE</title>
<sect3><title>TITLE</title>
<p>Text Text Text Text</p>
</sect3>
</sect2>
</sect1>
<sect1 count="2" level="1.1.1"><title>TITLE</title>
<sect2><title>TITLE</title>
<p>Text Text Text Text</p>
</sect2>
<sect2 count="3" level="1.1.1.1"><title>TITLE</title>
<p>Text Text Text Text</p>
</sect2>
</sect1>
<sect1 count="4" level="1.1.2"><title>TITLE</title>
<p>Text Text Text Text</p>
<sect2 count="5" level="1.1.2.1"><title>TITLE</title>
<p>Text Text Text Text</p>
<sect3 count="6" level="1.1.2.1.1"><title>TITLE</title>
<p>Text Text Text Text</p>
</sect3>
</sect2>
</sect1>
<sect1 count="7" level="1.1.3"><title>TITLE</title>
<p>Text Text Text Text</p>
</sect1>
</chapter>
<chapter count="8" level="1.2"><title>TITLE</title>
<sect1><title>TITLE</title>
<p>Text Text Text Text</p>
</sect1>
</chapter>
</book>
OUTPUT
<book>
<!-- In this chunk <chapter>, <sect1> and <sect2> don't have data i.e. <p>
and data is only within <sect3>. Therefore it is the first chunk (count=1)
and depth (level=1.1 i.e. count of book + occurrence of chapter within
book)-->
<chapter count="1" level="1.1"><title>TITLE</title>
<sect1><title>TITLE</title>
<sect2><title>TITLE</title>
<sect3><title>TITLE</title>
<p>Text Text Text Text</p>
</sect3>
</sect2>
</sect1>
<!-- In this chunk <sect1> don't have data i.e. <p> and data is only within
<sect2>. Therefore it is the second chunk (count=2) and depth (level=1.1.1
ie. level of chapter + occurrence count within chapter)-->
<sect1 count="2" level="1.1.1"><title>TITLE</title>
<sect2><title>TITLE</title>
<p>Text Text Text Text</p>
</sect2>
<!-- In this chunk <sect2> have data. Therefore it is the third chunk
(count=3) and depth (level=1.1.1.1 ie. level of sect1 + occurrence count
within sect1)-->
<sect2 count="3" level="1.1.1.1"><title>TITLE</title>
<p>Text Text Text Text</p>
</sect2>
</sect1>
<!-- In this chunk <sect1> have data. Therefore, it is the forth chunk
(count=4) and depth (level=1.1.2 ie. level of sect1 + occurrence count
within chapter)-->
<sect1 count="4" level="1.1.2"><title>TITLE</title>
<p>Text Text Text Text</p>
<!-- In this chunk <sect2> have data. Therefore, it is the fifth chunk
(count=5) and depth (level=1.1.2.1 ie. level of sect1 + occurrence count
within sect1)-->
<sect2 count="5" level="1.1.2.1"><title>TITLE</title>
<p>Text Text Text Text</p>
<!-- In this chunk <sect3> have data. Therefore, it is the sixth chunk
(count=6) and depth (level=1.1.2.1.1 ie. level of sect2 + occurrence count
within sect2)-->
<sect3 count="6" level="1.1.2.1.1"><title>TITLE</title>
<p>Text Text Text Text</p>
</sect3>
</sect2>
</sect1>
<!-- In this chunk <sect1> have data. Therefore, it is the seventh chunk
(count=7) and depth (level=1.1.3 ie. level of sect1 + occurrence count
within chapter)-->
<sect1 count="7" level="1.1.3"><title>TITLE</title>
<p>Text Text Text Text</p>
</sect1>
</chapter>
<!-- In this chunk <sect1> have data. Therefore, it is the eighth chunk
(count=8) and depth (level=1.2 ie. count of book + occurrence chapter
within book)-->
<chapter count="8" level="1.2"><title>TITLE</title>
<sect1><title>TITLE</title>
<p>Text Text Text Text</p>
</sect1>
</chapter>
</book>