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{-
Copyright (C) 2015 Martin Linnemann <theCodingMarlin@googlemail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Text.Pandoc.Readers.Odt.Generic.Namespaces
Copyright : Copyright (C) 2015 Martin Linnemann
License : GNU GPL, version 2 or above
Maintainer : Martin Linnemann <theCodingMarlin@googlemail.com>
Stability : alpha
Portability : portable
A class containing a set of namespace identifiers. Used to convert between
typesafe Haskell namespace identifiers and unsafe "real world" namespaces.
-}
module Text.Pandoc.Readers.Odt.Generic.Namespaces where
import qualified Data.Map as M
--
type NameSpaceIRI = String
--
type NameSpaceIRIs nsID = M.Map nsID NameSpaceIRI
--
class (Eq nsID, Ord nsID) => NameSpaceID nsID where
-- | Given a IRI, possibly update the map and return the id of the namespace.
-- May fail if the namespace is unknown and the application does not
-- allow unknown namespaces.
getNamespaceID :: NameSpaceIRI
-> NameSpaceIRIs nsID
-> Maybe (NameSpaceIRIs nsID, nsID)
-- | Given a namespace id, lookup its IRI. May be overriden for performance.
getIRI :: nsID
-> NameSpaceIRIs nsID
-> Maybe NameSpaceIRI
-- | The root element of an XML document has a namespace, too, and the
-- "XML.Light-parser" is eager to remove the corresponding namespace
-- attribute.
-- As a result, at least this root namespace must be provided.
getInitialIRImap :: NameSpaceIRIs nsID
getIRI = M.lookup
getInitialIRImap = M.empty
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