Preserve DOCTYPE declarations

[infotexture]

This plug-in currently preserves the optional XML declaration on the first line of XML files:

<?xml version="1.0" encoding="UTF-8"?>

but strips any subsequent DOCTYPE declarations that are required for DTD-based validation in XML dialects, such as DocBook or DITA.

These declarations should be preserved to allow editors and parsers to validate the file content.

DocBook example

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
                         "http://docbook.org/xml/4.5/docbookx.dtd">
<article>
    <title/>
    <sect1>
        <title/>
        <para/>
    </sect1>
</article>

DITA example

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE task PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
<task id="ID">
    <title></title>
    <shortdesc></shortdesc>
    <taskbody>
        <context>
            <p></p>
        </context>
        <steps>
            <step>
                <cmd></cmd>
            </step>
        </steps>
    </taskbody>
</task>

[ghost]

This is a major issue with hibernate mappings and the config xml in java projects. A solution would be greatly appreciated.

[kddnewton]

At the moment I can't get them out of the parser, but I'm working on it here: SAP/xml-tools#81

[kddnewton]

Fixed by #43, will be released in upcoming v0.5.0