/*******************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
******************************************************************************/
package org.apache.olingo.odata2.core.batch.v2;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.regex.Pattern;
public class Header implements Cloneable {
private final Map<String, HeaderField> headers = new HashMap<String, HeaderField>();
private int lineNumber;
public Header(final int lineNumer) {
lineNumber = lineNumer;
}
public void addHeader(final String name, final String value, final int lineNumber) {
final HeaderField headerField = getHeaderFieldOrDefault(name, lineNumber);
final List<String> headerValues = headerField.getValues();
if (!headerValues.contains(value)) {
headerValues.add(value);
}
}
public void addHeader(final String name, final List<String> values, final int lineNumber) {
final HeaderField headerField = getHeaderFieldOrDefault(name, lineNumber);
final List<String> headerValues = headerField.getValues();
for (final String value : values) {
if (!headerValues.contains(value)) {
headerValues.add(value);
}
}
}
public boolean isHeaderMatching(final String name, final Pattern pattern) {
if (getHeaders(name).size() != 1) {
return false;
} else {
return pattern.matcher(getHeaders(name).get(0)).matches();
}
}
public void removeHeader(final String name) {
headers.remove(name.toLowerCase(Locale.ENGLISH));
}
public String getHeader(final String name) {
final HeaderField headerField = getHeaderField(name);
return (headerField == null) ? null : headerField.getValue();
}
public String getHeaderNotNull(final String name) {
final HeaderField headerField = getHeaderField(name);
return (headerField == null) ? "" : headerField.getValueNotNull();
}
public List<String> getHeaders(final String name) {
final HeaderField headerField = getHeaderField(name);
return (headerField == null) ? new ArrayList<String>() : headerField.getValues();
}
public HeaderField getHeaderField(final String name) {
return headers.get(name.toLowerCase(Locale.ENGLISH));
}
public int getLineNumber() {
return lineNumber;
}
public Map<String, String> toSingleMap() {
final Map<String, String> singleMap = new HashMap<String, String>();
for (final String key : headers.keySet()) {
HeaderField field = headers.get(key);
singleMap.put(field.getFieldName(), getHeader(key));
}
return singleMap;
}
public Map<String, List<String>> toMultiMap() {
final Map<String, List<String>> singleMap = new HashMap<String, List<String>>();
for (final String key : headers.keySet()) {
HeaderField field = headers.get(key);
singleMap.put(field.getFieldName(), field.getValues());
}
return singleMap;
}
private HeaderField getHeaderFieldOrDefault(final String name, final int lineNumber) {
HeaderField headerField = headers.get(name.toLowerCase(Locale.ENGLISH));
if (headerField == null) {
headerField = new HeaderField(name, lineNumber);
headers.put(name.toLowerCase(Locale.ENGLISH), headerField);
}
return headerField;
}
@Override
public Header clone() {
final Header newInstance = new Header(lineNumber);
for (final String key : headers.keySet()) {
newInstance.headers.put(key, headers.get(key).clone());
}
return newInstance;
}
public static List<String> splitValuesByComma(final String headerValue) {
final List<String> singleValues = new ArrayList<String>();
String[] parts = headerValue.split(",");
for (final String value : parts) {
singleValues.add(value.trim());
}
return singleValues;
}
public static class HeaderField implements Cloneable {
private final String fieldName;
private final List<String> values;
private final int lineNumber;
public HeaderField(final String fieldName, final int lineNumber) {
this(fieldName, new ArrayList<String>(), lineNumber);
}
public HeaderField(final String fieldName, final List<String> values, final int lineNumber) {
this.fieldName = fieldName;
this.values = values;
this.lineNumber = lineNumber;
}
public String getFieldName() {
return fieldName;
}
public List<String> getValues() {
return values;
}
public String getValue() {
final StringBuilder result = new StringBuilder();
for (final String value : values) {
result.append(value);
result.append(", ");
}
if (result.length() > 0) {
result.delete(result.length() - 2, result.length());
}
return result.toString();
}
public String getValueNotNull() {
final String value = getValue();
return (value == null) ? "" : value;
}
@Override
public HeaderField clone() {
List<String> newValues = new ArrayList<String>();
newValues.addAll(values);
return new HeaderField(fieldName, newValues, lineNumber);
}
public int getLineNumber() {
return lineNumber;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((fieldName == null) ? 0 : fieldName.hashCode());
result = prime * result + lineNumber;
result = prime * result + ((values == null) ? 0 : values.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
HeaderField other = (HeaderField) obj;
if (fieldName == null) {
if (other.fieldName != null) {
return false;
}
} else if (!fieldName.equals(other.fieldName)) {
return false;
}
if (lineNumber != other.lineNumber) {
return false;
}
if (values == null) {
if (other.values != null) {
return false;
}
} else if (!values.equals(other.values)) {
return false;
}
return true;
}
}
}