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-->

<!--- 
  MIME resolver description root element.
  <p>
  <samp>PUBLIC "-//NetBeans//DTD MIME Resolver 1.0//EN"</samp>
  </p>
-->
<!ELEMENT MIME-resolver (file)+ >


<!--
  Plugin rule entities:
-->
<!ENTITY % xml-rules-component PUBLIC "-//NetBeans//DTD MIME Resolver XML Rules 1.0//EN" "https://netbeans.org/dtds/mime-resolver-xml-component-1_0.dtd">
%xml-rules-component;

<!--
  Update this entity after you plug in a new component.
  Update also the public ID version.
  You must maintain backwards compatibility.
-->
<!ENTITY % components "(xml-rule)?">


<!--- 
  A file (resource) represents the MIME resolver input.
  The resource is tested on attributes obtained from lower layers (OS) such
  as extension, header bytes and wrapping <code>FileObject</code> attributes.
  Some of them must match to proceed to the <code>resolver</code> element.
  <p>
  Implementation Note: 
  Lower level MIME type is obtained by <code>FileUtil.getMIMEType()</code>. It may not be 
  retrieved by a call to <code>FileObject.getMIMEType</code> to avoid recursion. A better way
  to determine MIME type as assigned by the OS may be introduced in the future.
  </p>
  <p>
  Implementation Note: 
  All other tests are performed by calling appropriate methods on <code>FileObject</code>
  so there is a danger of recursion if these call <code>this.getMIMEType()</code>.
  </p>
-->
<!ELEMENT file ((ext | mime | magic | fattr)+, (resolver | exit)) >

<!---
  Tests resource extension for full equality.
-->
<!ELEMENT ext EMPTY>
<!ATTLIST ext name CDATA #REQUIRED>

<!---
  Tests resource MIME type for equality (RFC2045) or suffix equality if it 
  starts with '+' (RFC 3023). 
-->
<!ELEMENT mime EMPTY>
<!ATTLIST mime name CDATA #REQUIRED>

<!--- 
  Look at initial bytes of the file and test for a complete match of masked
  bits. The default mask is the hexadecimal byte <samp>FF</samp> repeated as
  many times as the <code>hex</code> attribute is long.
  E.g. <samp>&lt;magic hex="0a0001" mask="FF00FF"/&gt;</samp>
-->
<!ELEMENT magic EMPTY>
<!ATTLIST magic hex CDATA #REQUIRED>
<!ATTLIST magic mask CDATA #IMPLIED>

<!---
  Test on <code>FileObject</code> attributes. Matching attributes are converted
  to strings via <code>Object.toString()</code> and compared to the <code>text</code>
  attribute.
  <p>
  <code>FileObject</code> attributes can be used for out-of-band tagging of standard documents.
  </p>
-->
<!ELEMENT fattr EMPTY>
<!ATTLIST fattr name CDATA #REQUIRED>
<!ATTLIST fattr text CDATA #REQUIRED>

<!---
  You may apply additional rules based on resource content.
  The <code>mime</code> element value is returned. Use the reserved value of <code>null</code>
  to indicate you are not interested in such files (same as <samp>&lt;exit/&gt;</samp>).
-->
<!ELEMENT resolver %components;>
<!ATTLIST resolver mime CDATA #REQUIRED>

<!--- 
  Declares that this file is not recognized by this resolver. 
  A shortcut for <samp>&lt;resolver mime="null"/&gt;</samp>.
-->
<!ELEMENT exit EMPTY>