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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V2.0//EN" "document-v20.dtd">
<document>
<header>
<title>POI-HPBF - Java API To Access Microsoft Publisher Format Files</title>
<subtitle>Overview</subtitle>
<authors>
<person name="Nick Burch" email="nick at apache dot org"/>
</authors>
</header>
<body>
<section>
<title>Overview</title>
<p>HPBF is the POI Project's pure Java implementation of the
Publisher file format.</p>
<p>Currently, HPBF is in an early stage, whilst we try to
figure out the file format. So far, we have basic text
extraction support, and are able to read some parts within
the file. Writing is not yet supported, as we are unable
to make sense of the Contents stream, which we think has
lots of offsets to other parts of the file.</p>
<p>Our initial aim is to produce a text extractor for the format
(now done), and be able to extract hyperlinks from within
the document (partly supported). Additional low level
code to process the file format may follow, if there
is demand and developer interest warrants it.</p>
<p>Text Extraction is available via the
<em>org.apache.poi.hpbf.extractor.PublisherTextExtractor</em>
class.</p>
<p>At this time, there is no <em>usermodel</em> api or similar.
There is only low level support for certain parts of
the file, but by no means all of it.</p>
<p>Our current understanding of the file format is documented
<a href="site:hpbformat">here</a>.</p>
<p>As of 2017, we are unaware of a public format specification for
Microsoft Publisher .pub files. This format was not included in
the Microsoft Open Specifications Promise with the rest of the
Microsoft Office file formats.
As of <a href="https://social.msdn.microsoft.com/Forums/en-US/63dc6c4e-d6b2-4873-97dd-139ddb304e24/what-about-publisher-file-format?forum=os_binaryfile">2009</a> and <a href="https://social.msdn.microsoft.com/Forums/en-US/a5f55c72-5378-4dc9-944a-9973a12bfaa7/reading-viso-vsdfiles-and-publisher-pubfiles-without-office?forum=os_binaryfile">2016</a>, Microsoft had no plans to document the .pub file format.
If this changes in the future, perhaps we will see a spec published
on the <a href="https://msdn.microsoft.com/en-us/library/cc313105(v=office.12).aspx">Microsoft Office File Format Open Specification Technical Documentation</a>.
</p>
<note>
This code currently lives the
<a href="https://github.com/apache/poi/tree/trunk/poi-scratchpad/">scratchpad area</a>
of the POI Git repository. To use this component, ensure
you have the Scratchpad Jar on your classpath, or a dependency
defined on the <em>poi-scratchpad</em> artifact - the main POI
jar is not enough! See the
<a href="site:components">POI Components Map</a>
for more details.
</note>
</section>
</body>
</document>
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