hxt-8.3.2: A collection of tools for processing XML with Haskell.ContentsIndex
Text.XML.HXT.DOM.QualifiedName
Portabilityportable
Stabilitystable
MaintainerUwe Schmidt (uwe@fh-wedel.de)
Description
The core data types of the HXT DOM.
Synopsis
data QName
type XName = Atom
type NsEnv = AssocList XName XName
mkQName :: String -> String -> String -> QName
mkName :: String -> QName
mkNsName :: String -> String -> QName
mkSNsName :: String -> QName
mkPrefixLocalPart :: String -> String -> QName
equivQName :: QName -> QName -> Bool
equivUri :: String -> String -> Bool
equalQNameBy :: (String -> String -> Bool) -> QName -> QName -> Bool
namePrefix :: QName -> String
localPart :: QName -> String
namespaceUri :: QName -> String
newXName :: String -> XName
nullXName :: XName
isNullXName :: XName -> Bool
mkQName' :: XName -> XName -> XName -> QName
namePrefix' :: QName -> XName
localPart' :: QName -> XName
namespaceUri' :: QName -> XName
setNamePrefix' :: XName -> QName -> QName
setLocalPart' :: XName -> QName -> QName
setNamespaceUri' :: XName -> QName -> QName
qualifiedName :: QName -> String
universalName :: QName -> String
universalUri :: QName -> String
buildUniversalName :: (String -> String -> String) -> QName -> String
normalizeNsUri :: String -> String
setNamespace :: NsEnv -> QName -> QName
isNCName :: String -> Bool
isWellformedQualifiedName :: String -> Bool
isWellformedQName :: QName -> Bool
isWellformedNSDecl :: QName -> Bool
isWellformedNameSpaceName :: QName -> Bool
isNameSpaceName :: QName -> Bool
isDeclaredNamespace :: QName -> Bool
xmlNamespaceXName :: XName
xmlXName :: XName
xmlnsNamespaceXName :: XName
xmlnsXName :: XName
xmlnsQN :: QName
toNsEnv :: AssocList String String -> NsEnv
Documentation
data QName

Namespace support for element and attribute names.

A qualified name consists of a name prefix, a local name and a namespace uri. All modules, which are not namespace aware, use only the localPart component. When dealing with namespaces, the document tree must be processed by Text.XML.HXT.Arrow.Namespace.propagateNamespaces to split names of structure "prefix:localPart" and label the name with the apropriate namespace uri

show/hide Instances
type XName = Atom
XML names are represented by Strings, but these strings do not mix up with normal strings. Names are always reduced to normal form, and they are stored internally in a name cache for sharing equal names by the same data structure
type NsEnv = AssocList XName XName
Type for the namespace association list, used when propagating namespaces by modifying the QName values in a tree
mkQName :: String -> String -> String -> QName
constructs a complete qualified name with namePrefix, localPart and namespaceUri. This function can be used to build not wellformed prefix:localpart names. The XPath module uses wildcard names like xxx:*. These must be build with mkQName and not with mkName.
mkName :: String -> QName
constructs a simple, namespace unaware name. If the name is in prefix:localpart form and the prefix is not empty the name is split internally into a prefix and a local part.
mkNsName :: String -> String -> QName

constructs a simple, namespace aware name, with prefix:localPart as first parameter, namspace uri as second.

see also mkName, mkPrefixLocalPart

mkSNsName :: String -> QName
old name for mkName
mkPrefixLocalPart :: String -> String -> QName

constructs a simple name, with prefix and localPart but without a namespace uri.

see also mkQName, mkName

equivQName :: QName -> QName -> Bool
Equivalent QNames are defined as follows: The URIs are normalized before comparison. Comparison is done with equalQNameBy and equivUri
equivUri :: String -> String -> Bool
Comparison of normalized namespace URIs using normalizeNsUri
equalQNameBy :: (String -> String -> Bool) -> QName -> QName -> Bool
Sometimes a weaker equality relation than equalQName is appropriate, e.g no case significance in names, ... a name normalization function can be applied to the strings before comparing. Called by equalQName and equivQName
namePrefix :: QName -> String
localPart :: QName -> String
namespaceUri :: QName -> String
newXName :: String -> XName
nullXName :: XName
isNullXName :: XName -> Bool
mkQName' :: XName -> XName -> XName -> QName
namePrefix' :: QName -> XName
access name prefix
localPart' :: QName -> XName
access local part
namespaceUri' :: QName -> XName
access namespace uri
setNamePrefix' :: XName -> QName -> QName
set name prefix
setLocalPart' :: XName -> QName -> QName
set local part
setNamespaceUri' :: XName -> QName -> QName
set name prefix
qualifiedName :: QName -> String
builds the full name "prefix:localPart", if prefix is not null, else the local part is the result
universalName :: QName -> String
builds the "universal" name, that is the namespace uri surrounded with "{" and "}" followed by the local part (specialisation of buildUniversalName)
universalUri :: QName -> String
builds an "universal" uri, that is the namespace uri followed by the local part. This is usefull for RDF applications, where the subject, predicate and object often are concatenated from namespace uri and local part (specialisation of buildUniversalName)
buildUniversalName :: (String -> String -> String) -> QName -> String
builds a string from the namespace uri and the local part. If the namespace uri is empty, the local part is returned, else namespace uri and local part are combined with the combining function given by the first parameter
normalizeNsUri :: String -> String
Normalization of URIs: Normalization is done by conversion into lowercase letters. A trailing "/" is ignored
setNamespace :: NsEnv -> QName -> QName

Compute the name prefix and the namespace uri for a qualified name.

This function does not test whether the name is a wellformed qualified name. see Namespaces in XML Rule [6] to [8]. Error checking is done with separate functions, see isWellformedQName and isWellformedQualifiedName for error checking.

isNCName :: String -> Bool
test for wellformed NCName, rule [4] XML Namespaces
isWellformedQualifiedName :: String -> Bool
test for wellformed QName, rule [6] XML Namespaces predicate is used in filter valdateNamespaces.
isWellformedQName :: QName -> Bool
test for wellformed QName values. A QName is wellformed, if the local part is a NCName, the namePrefix, if not empty, is also a NCName. predicate is used in filter valdateNamespaces.
isWellformedNSDecl :: QName -> Bool
test whether an attribute name is a namesapce declaration name. If this is not the case True is the result, else the name must be a well formed namespace name: All namespace prefixes starting with "xml" are reserved for XML related definitions. predicate is used in filter valdateNamespaces.
isWellformedNameSpaceName :: QName -> Bool
test for a namespace name to be well formed
isNameSpaceName :: QName -> Bool
test whether a name is a namespace declaration attribute name
isDeclaredNamespace :: QName -> Bool
predicate is used in filter valdateNamespaces.
xmlNamespaceXName :: XName
xmlXName :: XName
xmlnsNamespaceXName :: XName
xmlnsXName :: XName
xmlnsQN :: QName
toNsEnv :: AssocList String String -> NsEnv
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