1 files changed, 62 insertions, 0 deletions
diff --git a/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs b/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs
new file mode 100644
index 000000000..82ae3e20e
--- /dev/null
+++ b/src/Text/Pandoc/Readers/Odt/Generic/Namespaces.hs
@@ -0,0 +1,62 @@
+{-
+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