Convert ODT to single XML file

Question

I know that standards define two versions of ODT file: - one is a archive of different files, i.e. meta.xml, content.xml etc, - second is one big XML file with all the data. (I know above from http://en.wikipedia.org/wiki/OpenDocument_technical_specification#Document_Representation)

The latter version is better for processing, but unfortunately is not produced by OpenOffice.

The question is: Do you know any filter, converter, or anything what would help me transform ODT file in archive version into single XML file? The best would be a Java class.

Answer 1

I solved the case by producing XSLT stylesheet that transforms ODT source files into one XML file "more or less" compatible with the standard. Below is the code.

<?xml version="1.0" encoding="UTF-8"?>
    <xsl:stylesheet version="1.0"
        xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0">

        <xsl:param name="meta.file" select="'meta.xml'" /> 

        <xsl:template match="@*|node()">
            <xsl:copy>
                <xsl:apply-templates select="@*|node()" />
            </xsl:copy>
        </xsl:template>

        <xsl:template match="office:document-content">
            <office:document>
                <xsl:copy-of select="@*" />
                <xsl:variable name="meta" select="document($meta.file)/office:document-meta/office:meta" />
                <xsl:copy-of select="$meta" />
                <xsl:apply-templates />
            </office:document>
        </xsl:template>

    </xsl:stylesheet>