# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
#
+import os
+
class ParseError(Exception):
pass
DCNS = XMLNamespace('http://purl.org/dc/elements/1.1/')
XINS = XMLNamespace("http://www.w3.org/2001/XInclude")
XHTMLNS = XMLNamespace("http://www.w3.org/1999/xhtml")
+NCXNS = XMLNamespace("http://www.daisy.org/z3986/2005/ncx/")
+OPFNS = XMLNamespace("http://www.idpf.org/2007/opf")
WLNS = EmptyNamespace()
+
+class DocProvider(object):
+ """ Base class for a repository of XML files.
+ Used for generating joined files, like EPUBs
+ """
+
+ def by_slug(self, slug):
+ raise NotImplemented
+
+ def __getitem__(self, slug):
+ return self.by_slug(slug)
+
+ def by_uri(self, uri):
+ return self.by_slug(uri.rsplit('/', 1)[1])
+
+
+class DirDocProvider(DocProvider):
+ """ Serve docs from a directory of files in form <slug>.xml """
+
+ def __init__(self, dir):
+ self.dir = dir
+ self.files = {}
+
+ def by_slug(self, slug):
+ return open(os.path.join(self.dir, '%s.xml' % slug))
+
+
import lxml.etree as etree
import dcparser