Portability | OverloadedStrings |
---|---|
Stability | experimental |
Maintainer | Douglas Burke |
Safe Haskell | Safe-Infered |
This module defines an algebraic datatype for qualified names (QNames).
Documentation
A qualified name, consisting of a namespace URI and the local part of the identifier, which can be empty. The serialisation of a QName is formed by concatanating the two components.
Prelude> :set prompt "swish> " swish> :set -XOverloadedStrings swish> :m + Swish.QName swish> let qn1 = "http://example.com/" :: QName swish> let qn2 = "http://example.com/bob" :: QName swish> let qn3 = "http://example.com/bob/fred" :: QName swish> let qn4 = "http://example.com/bob/fred#x" :: QName swish> map getLocalName [qn1, qn2, qn3, qn4] ["","bob","fred","x"] swish> getNamespace qn1 http://example.com swish> getNamespace qn2 http://example.com swish> getNamespace qn3 http://example.com/bob/ swish> getNamespace qn4 http://example.com/bob/fred#
Eq QName | Equality is determined by a case sensitive comparison of the URI. |
Ord QName | At present the ordering is based on a comparison of the |
Show QName | The format used to display the URI is |
IsString QName | This is not total since it will fail if the input string is not a valid URI. |
FromRDFLabel QName | Converts from a Resource. |
ToRDFLabel QName | Converts to a Resource. |
A local name, which can be empty.
At present, the local name can not contain spaces or the '#', ':', or '/' characters. This restriction is experimental.
The empty local name.
Create a new qualified name with an explicit local component.
:: URI | The URI will be deconstructed to find if it contains a local component. |
-> Maybe QName | The failure case may be removed. |
Create a new qualified name.
getNamespace :: QName -> URISource
Return the URI of the namespace stored in the QName. This does not contain the local component.
getLocalName :: QName -> LNameSource
Return the local component of the QName.
getQNameURI :: QName -> URISource
Returns the full URI of the QName (ie the combination of the namespace and local components).
qnameFromFilePath :: FilePath -> IO QNameSource
Convert a filepath to a file: URI stored in a QName. If the input file path is relative then the current working directory is used to convert it into an absolute path.
If the input represents a directory then it *must* end in
the directory separator - so for Posix systems use
"/foo/bar/"
rather than
"/foo/bar"
.
This has not been tested on Windows.