xml-types-0.3.4: Basic types for representing XML

Portabilityportable
Maintainerjmillikin@gmail.com
Safe HaskellSafe-Inferred

Data.XML.Types

Contents

Description

Basic types for representing XML.

The idea is to have a full set of appropriate types, which various XML libraries can share. Instead of having equivalent-but-incompatible types for every binding, parser, or client, they all share the same types can can thus interoperate easily.

This library contains complete types for most parts of an XML document, including the prologue, node tree, and doctype. Some basic combinators are included for common tasks, including traversing the node tree and filtering children.

Synopsis

Types

Document prologue

Document body

data Name Source

A fully qualified name.

Prefixes are not semantically important; they are included only to simplify pass-through parsing. When comparing names with Eq or Ord methods, prefixes are ignored.

The IsString instance supports Clark notation; see http://www.jclark.com/xml/xmlns.htm and http://infohost.nmt.edu/tcc/help/pubs/pylxml/etree-QName.html. Use the OverloadedStrings language extension for very simple Name construction:

 myname :: Name
 myname = "{http://example.com/ns/my-namespace}my-name"

Doctypes

data Doctype Source

Note: due to the incredible complexity of DTDs, this type only supports external subsets. I've tried adding internal subset types, but they quickly gain more code than the rest of this module put together.

It is possible that some future version of this library might support internal subsets, but I am no longer actively working on adding them.

Constructors

Doctype 

Incremental processing

data Event Source

Some XML processing tools are incremental, and work in terms of events rather than node trees. The Event type allows a document to be fully specified as a sequence of events.

Event-based XML libraries include:

Combinators

Filters

Element traversal

Node traversal

Attributes