+++ /dev/null
-/*
- * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.netconf.nettyutil.handler.exi;
-
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.annotations.VisibleForTesting;
-import com.siemens.ct.exi.core.CodingMode;
-import com.siemens.ct.exi.core.EXIFactory;
-import com.siemens.ct.exi.core.EncodingOptions;
-import com.siemens.ct.exi.core.FidelityOptions;
-import com.siemens.ct.exi.core.exceptions.UnsupportedOption;
-import com.siemens.ct.exi.core.helpers.DefaultEXIFactory;
-import java.util.Objects;
-import org.opendaylight.controller.config.util.xml.XmlElement;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.w3c.dom.Element;
-import org.w3c.dom.NodeList;
-
-public final class EXIParameters {
- private static final Logger LOG = LoggerFactory.getLogger(EXIParameters.class);
-
- static final String EXI_PARAMETER_ALIGNMENT = "alignment";
- private static final String EXI_PARAMETER_BYTE_ALIGNED = "byte-aligned";
- private static final String EXI_PARAMETER_BIT_PACKED = "bit-packed";
- private static final String EXI_PARAMETER_COMPRESSED = "compressed";
- private static final String EXI_PARAMETER_PRE_COMPRESSION = "pre-compression";
-
- static final String EXI_PARAMETER_FIDELITY = "fidelity";
- private static final String EXI_FIDELITY_DTD = "dtd";
- private static final String EXI_FIDELITY_LEXICAL_VALUES = "lexical-values";
- private static final String EXI_FIDELITY_COMMENTS = "comments";
- private static final String EXI_FIDELITY_PIS = "pis";
- private static final String EXI_FIDELITY_PREFIXES = "prefixes";
-
- private static final EncodingOptions ENCODING_OPTIONS;
-
- static {
- final EncodingOptions opts = EncodingOptions.createDefault();
- try {
- opts.setOption(EncodingOptions.RETAIN_ENTITY_REFERENCE);
- opts.setOption(EncodingOptions.INCLUDE_OPTIONS);
-
- /**
- * NETCONF is XML environment, so the use of EXI cookie is not really needed. Adding it
- * decreases efficiency of encoding by adding human-readable 4 bytes "EXI$" to the head
- * of the stream. This is really useful, so let's output it now.
- */
- opts.setOption(EncodingOptions.INCLUDE_COOKIE);
- } catch (final UnsupportedOption e) {
- throw new ExceptionInInitializerError(e);
- }
-
- ENCODING_OPTIONS = opts;
- }
-
- private final FidelityOptions fidelityOptions;
- private final CodingMode codingMode;
-
- public EXIParameters(final CodingMode codingMode, final FidelityOptions fidelityOptions) {
- this.fidelityOptions = requireNonNull(fidelityOptions);
- this.codingMode = requireNonNull(codingMode);
- }
-
- @VisibleForTesting
- public static EXIParameters empty() {
- return new EXIParameters(CodingMode.BIT_PACKED, FidelityOptions.createDefault());
- }
-
- public static EXIParameters fromXmlElement(final XmlElement root) throws UnsupportedOption {
- final CodingMode coding;
- final NodeList alignmentElements = root.getElementsByTagName(EXI_PARAMETER_ALIGNMENT);
- if (alignmentElements.getLength() > 0) {
- final Element alignmentElement = (Element) alignmentElements.item(0);
- final String alignmentTextContent = alignmentElement.getTextContent().trim();
-
- switch (alignmentTextContent) {
- case EXI_PARAMETER_BYTE_ALIGNED:
- coding = CodingMode.BYTE_PACKED;
- break;
- case EXI_PARAMETER_COMPRESSED:
- coding = CodingMode.COMPRESSION;
- break;
- case EXI_PARAMETER_PRE_COMPRESSION:
- coding = CodingMode.PRE_COMPRESSION;
- break;
- case EXI_PARAMETER_BIT_PACKED:
- coding = CodingMode.BIT_PACKED;
- break;
- default:
- LOG.warn("Unexpected value in alignmentTextContent: {} , using default value",
- alignmentTextContent);
- coding = CodingMode.BIT_PACKED;
- break;
- }
- } else {
- coding = CodingMode.BIT_PACKED;
- }
-
- final FidelityOptions fidelity = FidelityOptions.createDefault();
- final NodeList fidelityElements = root.getElementsByTagName(EXI_PARAMETER_FIDELITY);
- if (fidelityElements.getLength() > 0) {
- final Element fidelityElement = (Element) fidelityElements.item(0);
-
- fidelity.setFidelity(FidelityOptions.FEATURE_DTD,
- fidelityElement.getElementsByTagName(EXI_FIDELITY_DTD).getLength() > 0);
- fidelity.setFidelity(FidelityOptions.FEATURE_LEXICAL_VALUE,
- fidelityElement.getElementsByTagName(EXI_FIDELITY_LEXICAL_VALUES).getLength() > 0);
- fidelity.setFidelity(FidelityOptions.FEATURE_COMMENT,
- fidelityElement.getElementsByTagName(EXI_FIDELITY_COMMENTS).getLength() > 0);
- fidelity.setFidelity(FidelityOptions.FEATURE_PI,
- fidelityElement.getElementsByTagName(EXI_FIDELITY_PIS).getLength() > 0);
- fidelity.setFidelity(FidelityOptions.FEATURE_PREFIX,
- fidelityElement.getElementsByTagName(EXI_FIDELITY_PREFIXES).getLength() > 0);
- }
-
- return new EXIParameters(coding, fidelity);
- }
-
- public EXIFactory getFactory() {
- final EXIFactory factory = DefaultEXIFactory.newInstance();
- factory.setCodingMode(codingMode);
- factory.setEncodingOptions(ENCODING_OPTIONS);
- factory.setFidelityOptions(fidelityOptions);
- return factory;
- }
-
- @Override
- public int hashCode() {
- return Objects.hash(fidelityOptions, codingMode);
- }
-
- @Override
- public boolean equals(final Object obj) {
- if (this == obj) {
- return true;
- }
- if (!(obj instanceof EXIParameters)) {
- return false;
- }
- final EXIParameters other = (EXIParameters) obj;
- return (codingMode == other.codingMode) && fidelityOptions.equals(other.fidelityOptions);
- }
-
- String getAlignment() {
- switch (codingMode) {
- case BIT_PACKED:
- return EXI_PARAMETER_BIT_PACKED;
- case BYTE_PACKED:
- return EXI_PARAMETER_BYTE_ALIGNED;
- case COMPRESSION:
- return EXI_PARAMETER_COMPRESSED;
- case PRE_COMPRESSION:
- return EXI_PARAMETER_PRE_COMPRESSION;
- default:
- throw new IllegalStateException("Unhandled coding mode " + codingMode);
- }
- }
-
- private String fidelityString(final String feature, final String string) {
- return fidelityOptions.isFidelityEnabled(feature) ? string : null;
- }
-
- String getPreserveComments() {
- return fidelityString(FidelityOptions.FEATURE_COMMENT, EXI_FIDELITY_COMMENTS);
- }
-
- String getPreserveDTD() {
- return fidelityString(FidelityOptions.FEATURE_DTD, EXI_FIDELITY_DTD);
- }
-
- String getPreserveLexicalValues() {
- return fidelityString(FidelityOptions.FEATURE_LEXICAL_VALUE, EXI_FIDELITY_LEXICAL_VALUES);
- }
-
- String getPreservePIs() {
- return fidelityString(FidelityOptions.FEATURE_PI, EXI_FIDELITY_PIS);
- }
-
- String getPreservePrefixes() {
- return fidelityString(FidelityOptions.FEATURE_PREFIX, EXI_FIDELITY_PREFIXES);
- }
-}
\ No newline at end of file
Code Review / transportpce.git / blobdiff