ITSImpl: An Implementation of the 'Internationalization Tag Set 1.0' Specification

This document describes ITSImpl, an implementation of the Internationalization Tag Set 1.0 specification. ITSImpl takes the following as an input:

A description of ITS data categories. (Note that the format of this description has been developed independently of the Internationalization Tag Set 1.0 specification.) A sample description for the data category terminology is below:
```
<datacat name="terminology">
a) <defaults>
a)  <defaultsElements its:term="no"/>
a)  <defaultsAttributes its:term="no"/>
a) </defaults>
b) <inheritance appliesTo="none"/>
c) <rulesElement name="termRule"/>
d) <localAdding datcatSelector="*[@its:term] | its:span[@term]"
d)  addedMarkup="@its:term | @term[parent::its:span or parent::its:termRule] |
d)  @its:termInfoRef | @termInfoRef[parent::its:span]"/>
</datacat>
```
The description encompasses a) default values for elements and attributes (e.g. the default of not being a term), b) inheritance behavior (e.g. the property of being a term does not inherited to nested elements or attributes), c) the name of an element for global ITS rules (e.g. termRule), and d) an XPath expression to select ITS markup used for local selection and adding of ITS information (e.g. the its:term attribute).
An XML document with ITS markup, i.e. with global rules (example), local markup (example) or with global linked rules (example).

This information is processed as follows:

The XSLT stylesheet datacats2xsl.xsl takes a data category description like above and an XML file (which possibly contains ITS markup, see example) as an input and produces an intermediary XSLT stylesheet (example).
The intermediary XSLT stylesheet takes the XML file as an input and produces an XML document which makes data category information for each element and attribute explicit (example).
The XSLT stylesheet output2crOutputformat.xsl takes that XML document as an input and produces the final result format. That format is used within the Internationalization Tag Set Version 1.0 Test Suite for the comparison of various implementations.