XSL Preserve Space in XML CDATA

I've tried a variety of solutions but can't seem to get this working. I have searched stackoverflow and found many hints, many of which I have tried, to no avail.

I am doing an XSL transformation of XML to XML (FOP) for PDF creation. The source XML has <code> elements whose contents start with a CDATA declaration. The transformation removes newlines.

Example input XML:

<?xml version="1.0" encoding="iso-8859-1"?>
<myxml>
    <code><![CDATA[import java.nio.charset.Charset;
    import com.my.library.AClass;
    import com.my.library.AnotherClass;

    public String getStringValue(String key) {
            // Just some ramblings

            // Dummy code...
            if (key != null && key.length() > 0) {
                System.out.println(key);
            }
        }
    ]]></code>
</myxml>

Example XSL:

<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0"
    xmlns:xsl="http://ift.tt/tCZ8VR" 
    xmlns="http://ift.tt/VnWImq" 
    xmlns:fo="http://ift.tt/vyPH5E" 
    exclude-result-prefixes="fo" 
    >
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes" cdata-section-elements="code"/>
<xsl:preserve-space elements="code" />

<fo:block font-family="Courier New" font-size="12pt" color="black" 
    space-after="12pt" space-before="12pt" space-before.precedence="4">

      <fo:block>
          <xsl:text>Copy</xsl:text>
          <xsl:copy>
            <xsl:value-of select="code"/>
          </xsl:copy>
      </fo:block>

      <fo:block>
          <xsl:text>Copy Text</xsl:text>
          <xsl:copy>
            <xsl:value-of select="code/text()"/>
          </xsl:copy>
      </fo:block>

      <fo:block>
          <xsl:text>Original</xsl:text>
          <xsl:value-of select="code"/>
      </fo:block>

      <fo:block>
          <xsl:text>Normalise space</xsl:text>
          <value-of select="normalize-space(code)" disable-output-escaping="yes"/>
      </fo:block>

      <fo:block>          
          <xsl:text>Copy with extra CDATA wrapper?</xsl:text>
          <xsl:copy>
            <xsl:text disable-output-escaping="yes"><![CDATA[<![CDATA[]]></xsl:text>
            <xsl:value-of select="code"/>
            <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
          </xsl:copy>         
      </fo:block>

      <fo:block>
        <xsl:text>Again, an attempt to wrap</xsl:text>
        <xsl:text disable-output-escaping="yes">
          &lt;![CDATA[
        </xsl:text>
        <xsl:value-of select="code" />
        <xsl:text disable-output-escaping="yes">
          ]]&gt;
        </xsl:text>
      </fo:block>
</fo:block>

Permutations... I have tried all permutations of the following:

• 
  

  Global Declarations: With Both cdata-section and preserve-space, With only one or the other

  
  


• 
  

  Source xml document containing/not containing xml:space="preserve", on both code element and outer element.

  
  

In total, 6 permutations.

These settings seem to make little difference for me. The following is output for each test block:

• Block 'Copy': Empty (no text output)


• Block 'Copy Text': Empty (no text output)


• Block 'Original': The code, but all newlines removed


• Block 'Normalise space': Empty (no text output)


• Block 'Copy with extra CDATA wrapper?': Empty (no text output)


• Block 'Again, an attempt to wrap': The code, but all newlines removed

Any help will save my sanity.

Yours in eternal gratitude.

Luke (Slowly going out of my mind).