Text.XML.HXT.Arrow.Namespace

This arrow is useful for document processing, that requires access to all namespace declarations at any element node, but which cannot be done with a simple processWithNsEnv.

cleanupNamespaces :: LA XmlTree (String, String) -> LA XmlTree XmlTree

does the real work for namespace cleanup.

The parameter is used for collecting namespace uris and prefixes from the input tree

collectNamespaceDecl :: LA XmlTree (String, String)

collect all namespace declarations contained in a document

apply getNamespaceDecl to a whole XmlTree

collectPrefixUriPairs :: LA XmlTree (String, String)

collect all (namePrefix, namespaceUri) pairs from a tree

all qualified names are inspected, whether a namespace uri is defined, for these uris the prefix and uri is returned. This arrow is useful for namespace cleanup, e.g. for documents generated with XSLT. It can be used together with collectNamespaceDecl to cleanupNamespaces

isNamespaceDeclAttr :: ArrowXml a => a XmlTree XmlTree

test whether an attribute node contains an XML Namespace declaration

getNamespaceDecl :: ArrowXml a => a XmlTree (String, String)

get the namespace prefix and the namespace URI out of an attribute tree with a namespace declaration (see isNamespaceDeclAttr) for all other nodes this arrow fails

processWithNsEnv :: ArrowXml a => (NsEnv -> a XmlTree XmlTree) -> NsEnv -> a XmlTree XmlTree

process a document tree with an arrow, containing always the valid namespace environment as extra parameter.

The namespace environment is implemented as a AssocList

processWithNsEnvWithoutAttrl :: ArrowXml a => (NsEnv -> a XmlTree XmlTree) -> NsEnv -> a XmlTree XmlTree

process all element nodes of a document tree with an arrow, containing always the valid namespace environment as extra parameter. Attribute lists are not processed.