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/usr/share/pyshared/odtexport/xsl/document-content/block.xsl is in trac-odtexport 0.6.0+svn10787-2.

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The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="utf-8"?>
<!--

    xhtml2odt - XHTML to ODT XML transformation.
    Copyright (C) 2009 Aurelien Bompard
    Inspired by the work on docbook2odt, by Roman Fordinal
    http://open.comsultia.com/docbook2odf/

    License: LGPL v2.1 or later <http://www.gnu.org/licenses/lgpl-2.1.html>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
    MA  02110-1301  USA

-->
<xsl:stylesheet
    xmlns:h="http://www.w3.org/1999/xhtml"
    xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0"
    xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0"
    xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0"
    xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0"
    xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0"
    xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0"
    xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0"
    xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0"
    xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0"
    xmlns:math="http://www.w3.org/1998/Math/MathML"
    xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0"
    xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0"
    xmlns:dom="http://www.w3.org/2001/xml-events"
    xmlns:xforms="http://www.w3.org/2002/xforms"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:presentation="urn:oasis:names:tc:opendocument:xmlns:presentation:1.0"
    version="1.0">



<xsl:template match="h:blockquote">
    <!-- special formatting is defined in paragraph -->
    <xsl:apply-templates/>
</xsl:template>

<xsl:template match="h:hr">
    <text:p text:style-name="Horizontal_20_Line"/>
</xsl:template>
<xsl:template match="h:hr" mode="inparagraph"/>

<!--
    Preformatted paragraphs management
-->
<xsl:template match="h:pre">
    <text:p text:style-name="Preformatted_20_Text">
        <xsl:apply-templates mode="inparagraph"/>
    </text:p>
    <!-- The Preformatted_20_Text style has a margin-bottom of 0, so we add an
         empty line here -->
    <text:p text:style-name="Text_20_body"/>
</xsl:template>
<xsl:template match="h:pre" mode="inparagraph"/>

<xsl:template match="h:pre//text()" mode="inparagraph">
    <!-- Don't generate the last line break before the </pre> -->
    <xsl:variable name="content">
        <xsl:choose>
            <xsl:when test="contains(., '&#10;')
                            and position() = last()
                            and substring(., string-length(.)) = '&#10;'">
                <xsl:value-of select="substring(., 1, string-length(.)-1)"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="."/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <!-- Now call the main template, which will handle the line-breaking -->
    <xsl:call-template name="pre.line">
        <xsl:with-param name="content" select="$content"/>
    </xsl:call-template>
</xsl:template>

<!--
    this template splits newline-separated pararagraphs into multiple
    paragraphs
-->
<xsl:template name="pre.line">
    <xsl:param name="content"/>
    <xsl:choose>
        <!-- This line-breaking manipulation is classical, e.g.:
             http://skew.org/xml/stylesheets/linefeed2br/
        -->
        <xsl:when test="contains($content, '&#10;')">
            <!-- split in two -->
            <xsl:call-template name="pre.line">
                <xsl:with-param name="content" select="substring-before($content, '&#10;')"/>
            </xsl:call-template>
            <text:line-break/>
            <xsl:call-template name="pre.line">
                <xsl:with-param name="content" select="substring-after($content, '&#10;')"/>
            </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
            <!-- here we're on a single line, call pre.line.single to preserve
                 spaces -->
            <xsl:call-template name="pre.line.single">
                <xsl:with-param name="content" select="string($content)"/>
            </xsl:call-template>
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

<!-- This template escapes adjacent spaces -->
<xsl:template name="pre.line.single">
    <xsl:param name="content"/>
    <xsl:choose>
        <xsl:when test="contains($content, '  ')">
            <xsl:call-template name="pre.line.single">
                <xsl:with-param name="content" select="substring-before($content, '  ')"/>
            </xsl:call-template>
            <text:s text:c="2"/>
            <xsl:call-template name="pre.line.single">
                <xsl:with-param name="content" select="substring-after($content, '  ')"/>
            </xsl:call-template>
        </xsl:when>
        <xsl:when test="contains($content, '&#9;')">
            <xsl:call-template name="pre.line.single">
                <xsl:with-param name="content" select="substring-before($content, '&#9;')"/>
            </xsl:call-template>
            <text:tab/>
            <xsl:call-template name="pre.line.single">
                <xsl:with-param name="content" select="substring-after($content, '&#9;')"/>
            </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
            <xsl:value-of select="string($content)"/>
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>


<xsl:template match="h:address">
    <!-- special formatting is defined in paragraph -->
    <xsl:call-template name="paragraph"/>
</xsl:template>
<xsl:template match="h:address" mode="inparagraph"/>

<xsl:template match="h:center">
    <!-- special formatting is defined in paragraph -->
    <xsl:call-template name="paragraph"/>
</xsl:template>
<xsl:template match="h:center" mode="inparagraph"/>

</xsl:stylesheet>