43 lines
2.4 KiB
XML
43 lines
2.4 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<!-- This file is part of the DITA Open Toolkit project. See the accompanying LICENSE file for applicable license. -->
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<concept id="processing-structure">
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<title>Processing structure</title>
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<shortdesc>DITA-OT implements a multi-stage, map-driven architecture to process DITA content. Each stage in the
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process examines some or all of the content; some stages result in temporary files that are used by later steps,
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while others stages result in updated copies of the DITA content. Most of the processing takes place in a temporary
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working directory; the source files themselves are never modified.</shortdesc>
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<prolog>
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<metadata>
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<keywords>
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<indexterm>architecture</indexterm>
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<indexterm>preprocessing</indexterm>
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<indexterm>Eclipse Help</indexterm>
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<indexterm>HTML Help</indexterm>
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<indexterm>XHTML</indexterm>
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<indexterm>PDF</indexterm>
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<indexterm>HTML5
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<indexterm>preprocesing</indexterm></indexterm>
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<indexterm>pipelines
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<indexterm>description of</indexterm></indexterm>
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<indexterm>pipelines
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<index-see-also>preprocessing</index-see-also></indexterm>
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</keywords>
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</metadata>
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</prolog>
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<conbody>
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<p>DITA-OT is designed as a pipeline. Most of the pipeline is common to all output formats; it is known as the
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<term>pre-processing stage</term>. In general, any DITA process begins with this common set of pre-processing
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routines.</p>
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<p>Once the pre-processing is completed, the pipeline diverges based on the requested output format. Some processing
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is still common to multiple output formats; for example, Eclipse Help and HTML Help both use the same routines to
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generate XHTML topics, after which the two pipelines branch to create different sets of navigation files.</p>
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<p>The following image illustrates how the pipeline works for several common output formats: PDF, Eclipse Help, HTML
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Help, XHTML, and HTML5.</p>
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<note>Other output formats may implement additional processing steps.</note>
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<fig>
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<title>Diagram of some possible paths through the transformation pipeline</title>
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<image href="images/processing-flow.svg" placement="break" width="6.5in"/>
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</fig>
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</conbody>
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</concept>
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