Use local XML schemas for XML validation

a3m/cli/client/__main__.py

@@ -13,6 +13,7 @@
 
 from a3m.api.transferservice import v1beta1 as transfer_service_api
 from a3m.cli.client.wrapper import ClientWrapper
+from a3m.cli.common import configure_xml_catalog_files
 from a3m.cli.common import init_django
 from a3m.cli.common import suppress_warnings
 from a3m.server.rpc.client import Client
@@ -53,6 +54,7 @@ def main(ctx, uri, name, address, processing_config, wait_for_ready, no_input):
     """
     init_django()
     suppress_warnings()
+    configure_xml_catalog_files()
 
     # Disable logging.
     if not settings.DEBUG:

a3m/cli/common.py

@@ -1,4 +1,5 @@
 import os
+import pathlib
 import sys
 import warnings
 
@@ -25,3 +26,10 @@ def init_django():
     """
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "a3m.settings.common")
     django.setup()
+
+
+def configure_xml_catalog_files():
+    """Use local XML schemas for validation."""
+    os.environ["XML_CATALOG_FILES"] = str(
+        pathlib.Path(__file__).parent.parent / "client/assets/catalog/catalog.xml"
+    )

a3m/cli/server/__main__.py

@@ -7,6 +7,7 @@
 from django.conf import settings
 
 from a3m import __version__
+from a3m.cli.common import configure_xml_catalog_files
 from a3m.cli.common import init_django
 from a3m.cli.common import suppress_warnings
 
@@ -17,6 +18,7 @@
 def main():
     init_django()
     suppress_warnings()
+    configure_xml_catalog_files()
 
     from a3m.server.runner import create_server
 

a3m/client/__init__.py

@@ -1,6 +1,12 @@
 import os
+import pathlib
 
 
 THIS_DIR = os.path.dirname(__file__)
 
 ASSETS_DIR = os.path.join(THIS_DIR, "assets", "")
+
+# Use local XML schemas for validation.
+os.environ["XML_CATALOG_FILES"] = str(
+    pathlib.Path(__file__).parent / "assets/catalog/catalog.xml"
+)

a3m/client/assets/catalog/catalog.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0"?>
+<!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
+<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
+
+  <group prefer="system">
+    <system
+      systemId="http://www.loc.gov/standards/xlink/xlink.xsd"
+      uri="../mets/xlink.xsd" />
+
+    <system
+      systemId="http://www.loc.gov/standards/mets/version1121/mets.xsd"
+      uri="../mets/mets.xsd" />
+
+    <system
+      systemId="http://www.loc.gov/standards/premis/v3/premis.xsd"
+      uri="../premis/premis.xsd" />
+
+    <!-- mets-reader-writer still validates against PREMIS 2.2 -->
+    <system
+      systemId="http://www.loc.gov/standards/premis/v2/premis-v2-2.xsd"
+      uri="../premis/premis-v2-2.xsd" />
+
+    <system
+      systemId="http://www.loc.gov/mods/xml.xsd"
+      uri="../mods/xml.xsd" />
+
+    <system
+      systemId="http://www.loc.gov/standards/mods/v3/mods.xsd"
+      uri="../mods/mods.xsd" />
+
+  </group>
+
+</catalog>

a3m/client/assets/mets/xlink.xsd

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- METS XLink Schema, v. 2, Nov. 15, 2004 -->
+<schema targetNamespace="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" elementFormDefault="qualified">
+  <!--  global attributes  --> 
+  <attribute name="href"  type="anyURI"/>
+  <attribute name="role" type="string"/>
+  <attribute name="arcrole" type="string"/>
+  <attribute name="title" type="string" /> 
+  <attribute name="show">
+    <simpleType>
+      <restriction base="string">
+	<enumeration value="new" /> 
+	<enumeration value="replace" /> 
+	<enumeration value="embed" /> 
+	<enumeration value="other" /> 
+	<enumeration value="none" /> 
+      </restriction>
+    </simpleType>
+  </attribute>
+  <attribute name="actuate">
+    <simpleType>
+      <restriction base="string">
+	<enumeration value="onLoad" /> 
+	<enumeration value="onRequest" /> 
+	<enumeration value="other" /> 
+	<enumeration value="none" /> 
+      </restriction>
+    </simpleType>
+  </attribute>
+  <attribute name="label" type="string" /> 
+  <attribute name="from" type="string" /> 
+  <attribute name="to" type="string" /> 
+  <attributeGroup name="simpleLink">
+    <attribute name="type" type="string" fixed="simple" form="qualified" /> 
+    <attribute ref="xlink:href" use="optional" /> 
+    <attribute ref="xlink:role" use="optional" /> 
+    <attribute ref="xlink:arcrole" use="optional" /> 
+    <attribute ref="xlink:title" use="optional" /> 
+    <attribute ref="xlink:show" use="optional" /> 
+    <attribute ref="xlink:actuate" use="optional" /> 
+  </attributeGroup>
+  <attributeGroup name="extendedLink">
+    <attribute name="type" type="string" fixed="extended" form="qualified" /> 
+    <attribute ref="xlink:role" use="optional" /> 
+    <attribute ref="xlink:title" use="optional" /> 
+  </attributeGroup>
+  <attributeGroup name="locatorLink">
+    <attribute name="type" type="string" fixed="locator" form="qualified" /> 
+    <attribute ref="xlink:href" use="required" /> 
+    <attribute ref="xlink:role" use="optional" /> 
+    <attribute ref="xlink:title" use="optional" /> 
+    <attribute ref="xlink:label" use="optional" /> 
+  </attributeGroup>
+  <attributeGroup name="arcLink">
+    <attribute name="type" type="string" fixed="arc" form="qualified" /> 
+    <attribute ref="xlink:arcrole" use="optional" /> 
+    <attribute ref="xlink:title" use="optional" /> 
+    <attribute ref="xlink:show" use="optional" /> 
+    <attribute ref="xlink:actuate" use="optional" /> 
+    <attribute ref="xlink:from" use="optional" /> 
+    <attribute ref="xlink:to" use="optional" /> 
+  </attributeGroup>
+  <attributeGroup name="resourceLink">
+    <attribute name="type" type="string" fixed="resource" form="qualified" /> 
+    <attribute ref="xlink:role" use="optional" /> 
+    <attribute ref="xlink:title" use="optional" /> 
+    <attribute ref="xlink:label" use="optional" /> 
+  </attributeGroup>
+  <attributeGroup name="titleLink">
+    <attribute name="type" type="string" fixed="title" form="qualified" /> 
+  </attributeGroup>
+  <attributeGroup name="emptyLink">
+    <attribute name="type" type="string" fixed="none" form="qualified" /> 
+  </attributeGroup>
+</schema>