XProc 3.0 Programmer Reference

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XProc 3.0 is a programming language for processing XML, JSON, and other documents in pipelines. XProc chains conversions and other steps, allowing for potentially complex processing. XProc is especially useful for applications, such as publishing, where content may come from multiple input sources, pass through multiple processing steps and result in multiple output streams.XProc 3.0 Programmer Reference is aimed at programmers and others who process XML. It explains the language in detail, provides examples, and contains a set of example use cases. Anyone who uses the XProc language will find a wealth of information in this book.Inside the book Introduction: introduces XProc 3.0 and provides background. Getting started: describes how to process XProc and provides simple examples to get started. XProc fundamentals: provides background information on XProc and basic concepts, such as pipelines, steps, and documents. Programming concepts: introduces the programming concepts used in XProc, including the use of XPath, maps, Attribute and Text Value Templates (AVT/TVT), and more. Defining and populating steps: describes how to declare a step, what a pipeline document looks like, and how to add functionality to a pipeline. Built-in steps: provides an overview of the many built-in steps that can be used to populate XProc pipelines. Extension functions: XProc provides a set of extension functions that are available for use in XPath expressions in XProc pipelines. Examples and recipes: examples of XProc pipelines for specific use cases. Appendices: describes the standard step library and provides an overview of optional built-in steps.