        HaXml - Haskell utilities for processing XML
        --------------------------------------------

Installation instructions:
We currently support nhc98, ghc, and Hugs.  The automatic configuration
detects which compilers/interpreters you have, and prepares a build
tree for each.  Installation requires write-permission on the system
directories of the compiler/interpreter - the libraries and interfaces
can then be used as "-package HaXml" (for ghc/nhc98 - no extra options
required for Hugs).  The standalone tools are installed to a directory of
your choice.

For newer compilers, use Cabal to build and install:

    cabal install

or 

    runhaskell Setup.hs configure
    runhaskell Setup.hs build
    runhaskell Setup.hs install

For older compilers, use the traditional sequence:

    ./configure
    make
    make install

Options to configure are:
    --buildwith=...  e.g. ghc-6.2,        to build for a specific compiler
    --prefix=...     e.g. /usr/local/bin, installation location for HaXml tools

Complaints to:  :-)
    Malcolm.Wallace@cs.york.ac.uk

P.S.
    For those building on Windows /without/ Cygwin, you can avoid the need
    for configure/make steps by simply running the minimal build script in
        Build.bat
    You will need to edit it for the location of your compiler etc.

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What this package contains:

  docs/			Some rudimentary HTML documentation about the libraries.
  docs/HaXml/		Haddock-generated API documentation.
  examples/		Some small examples of how the libraries/tools are used.

  src/Text/XML/HaXml/	Numerous support modules for processing XML.
			(The main APIs are as follows:)
	Types.hs	Defines a (generic) representation for any XML document.
	Parse.hs	Parses an XML document into the generic representation.
	ParseLazy.hs	A more space-efficient parser.
	Pretty.hs	Pretty-prints an XML document.
	Validate.hs	Validates an XML document against a DTD.
	Combinators.hs	Provides the combinators described in the ICFP'99 paper
			together with some other useful functions.
	SAX.hs		A simple SAX-like stream-event-parser.
	Wrappers.hs	Simple top-level wrappers for processing a single
			document using the combinators.
	XmlContent.hs	A replacement class for Show/Read, to translate Haskell
			values to/from XML documents.  Can be derived by DrIFT
			and/or DtdToHaskell.
	TypeMapping.hs	Defines an explicit representation for Haskell types,
			allowing generation of a DTD from a Haskell value.
	OneOfN.hs	Some support types (OneOf2 - OneOf20) for code
			generated by tools/DtdToHaskell.

  src/Text/XML/HaXml/Html	Extra support modules for processing HTML.
	Parse.hs	An error-correcting HTML parser, produces the generic
			XML representation.
	Pretty.hs	An HTML-specific pretty-printer.
	Generate.hs	Some useful combinators for generating HTML content.

  src/Text/XML/HaXml/Schema	Extra support modules for processing Schema.
	XSDTypeModel.hs	A representation of the datatype model of Xml Schema.
	Parse.hs	Parser from an XSD document to the type model above.

  src/tools/		Standalone tools based on the library above.
	DtdToHaskell	Translates an XML doc containing a DTD into a Haskell
			module containing data/newtype definitions.
	Xtract		A structured 'grep' for XML docs, loosely based on
			the XPath and XQL query languages.
	Validate	A simple validation tool for XML docs.  Give it a DTD
			file and an XML file, and it reports all validation
			errors it can find.
	Canonicalise	A 'cat' filter for XML docs, shows our "standard"
			parsing and pretty-printing behaviour.
	MkOneOf		Generates a OneOfN type, given an N, together with
			its required instance of XmlContent.  Sometimes types
			larger than OneOf20 are required in code generated by
			DtdToHaskell.

  src/Text/XML/HaXml/Xtract	Internal APIs of the Xtract tool.
	Parse.hs	Parse an XPath query to produce a filter.
	Combinators.hs	Modified version of the standard combinators.

  src/Text/XML/HaXml/DtdToHaskell	Internal APIs of the DtdToHaskell tool.
	TypeDef.hs	A representation of the Haskell types corresponding
			to an XML DTD, and a pretty printer for them.
	Convert.hs	Convert the standard DTD representation to the
			Haskell-like TypeDef representation.
	Instance.hs	Generate appropriate XmlContent class instances for
			the TypeDefs.

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