/
VertxHttpHeaders.java
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/
VertxHttpHeaders.java
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/*
* Copyright (c) 2011-2017 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
* which is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
*/
package io.vertx.core.http.impl.headers;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.util.AsciiString;
import io.netty.util.HashingStrategy;
import io.vertx.core.MultiMap;
import io.vertx.core.http.impl.HttpUtils;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.TreeSet;
import java.util.function.Consumer;
import static io.netty.util.AsciiString.*;
/**
* @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
*/
public final class VertxHttpHeaders extends HttpHeaders implements MultiMap {
@Override
public MultiMap setAll(MultiMap headers) {
return set0(headers);
}
@Override
public MultiMap setAll(Map<String, String> headers) {
return set0(headers.entrySet());
}
@Override
public int size() {
return names().size();
}
private static int index(int hash) {
return hash & 0x0000000F;
}
private final VertxHttpHeaders.MapEntry[] entries = new VertxHttpHeaders.MapEntry[16];
private final VertxHttpHeaders.MapEntry head = new VertxHttpHeaders.MapEntry();
public VertxHttpHeaders() {
head.before = head.after = head;
}
public boolean contentLengthSet() {
return contains(io.vertx.core.http.HttpHeaders.CONTENT_LENGTH);
}
public boolean contentTypeSet() {
return contains(io.vertx.core.http.HttpHeaders.CONTENT_TYPE);
}
@Override
public VertxHttpHeaders add(CharSequence name, CharSequence value) {
int h = AsciiString.hashCode(name);
int i = index(h);
add0(h, i, name, value);
return this;
}
@Override
public VertxHttpHeaders add(CharSequence name, Object value) {
return add(name, (CharSequence)value);
}
@Override
public HttpHeaders add(String name, Object value) {
return add((CharSequence) name, (CharSequence) value);
}
@Override
public VertxHttpHeaders add(String name, String strVal) {
return add((CharSequence) name, strVal);
}
@Override
public VertxHttpHeaders add(CharSequence name, Iterable values) {
int h = AsciiString.hashCode(name);
int i = index(h);
for (Object vstr: values) {
add0(h, i, name, (String) vstr);
}
return this;
}
@Override
public VertxHttpHeaders add(String name, Iterable values) {
return add((CharSequence) name, values);
}
@Override
public MultiMap addAll(MultiMap headers) {
return addAll(headers.entries());
}
@Override
public MultiMap addAll(Map<String, String> map) {
return addAll(map.entrySet());
}
private MultiMap addAll(Iterable<Map.Entry<String, String>> headers) {
for (Map.Entry<String, String> entry: headers) {
add(entry.getKey(), entry.getValue());
}
return this;
}
@Override
public VertxHttpHeaders remove(CharSequence name) {
Objects.requireNonNull(name, "name");
int h = AsciiString.hashCode(name);
int i = index(h);
remove0(h, i, name);
return this;
}
@Override
public VertxHttpHeaders remove(final String name) {
return remove((CharSequence) name);
}
@Override
public VertxHttpHeaders set(CharSequence name, CharSequence value) {
return set0(name, value);
}
@Override
public VertxHttpHeaders set(String name, String value) {
return set((CharSequence)name, value);
}
@Override
public VertxHttpHeaders set(String name, Object value) {
return set((CharSequence)name, (CharSequence) value);
}
@Override
public VertxHttpHeaders set(CharSequence name, Object value) {
return set(name, (CharSequence)value);
}
@Override
public VertxHttpHeaders set(CharSequence name, Iterable values) {
Objects.requireNonNull(values, "values");
int h = AsciiString.hashCode(name);
int i = index(h);
remove0(h, i, name);
for (Object v: values) {
if (v == null) {
break;
}
add0(h, i, name, (String) v);
}
return this;
}
@Override
public VertxHttpHeaders set(String name, Iterable values) {
return set((CharSequence) name, values);
}
@Override
public boolean contains(CharSequence name, CharSequence value, boolean ignoreCase) {
int h = AsciiString.hashCode(name);
int i = index(h);
VertxHttpHeaders.MapEntry e = entries[i];
HashingStrategy<CharSequence> strategy = ignoreCase ? CASE_INSENSITIVE_HASHER : CASE_SENSITIVE_HASHER;
while (e != null) {
if (e.hash == h && AsciiString.contentEqualsIgnoreCase(name, e.key)) {
if (strategy.equals(value, e.getValue())) {
return true;
}
}
e = e.next;
}
return false;
}
@Override
public boolean contains(String name, String value, boolean ignoreCase) {
return contains((CharSequence) name, value, ignoreCase);
}
@Override
public boolean contains(CharSequence name) {
return get0(name) != null;
}
@Override
public boolean contains(String name) {
return contains((CharSequence) name);
}
@Override
public String get(CharSequence name) {
Objects.requireNonNull(name, "name");
CharSequence ret = get0(name);
return ret != null ? ret.toString() : null;
}
@Override
public String get(String name) {
return get((CharSequence) name);
}
@Override
public List<String> getAll(CharSequence name) {
Objects.requireNonNull(name, "name");
LinkedList<String> values = new LinkedList<>();
int h = AsciiString.hashCode(name);
int i = index(h);
VertxHttpHeaders.MapEntry e = entries[i];
while (e != null) {
if (e.hash == h && AsciiString.contentEqualsIgnoreCase(name, e.key)) {
values.addFirst(e.getValue().toString());
}
e = e.next;
}
return values;
}
@Override
public List<String> getAll(String name) {
return getAll((CharSequence) name);
}
@Override
public void forEach(Consumer<? super Map.Entry<String, String>> action) {
VertxHttpHeaders.MapEntry e = head.after;
while (e != head) {
action.accept(new AbstractMap.SimpleEntry<>(e.key.toString(), e.value.toString()));
e = e.after;
}
}
@Override
public List<Map.Entry<String, String>> entries() {
List<Map.Entry<String, String>> all = new ArrayList<>(size());
VertxHttpHeaders.MapEntry e = head.after;
while (e != head) {
final MapEntry f = e;
all.add(new Map.Entry<String, String>() {
@Override
public String getKey() {
return f.key.toString();
}
@Override
public String getValue() {
return f.value.toString();
}
@Override
public String setValue(String value) {
return f.setValue(value).toString();
}
@Override
public String toString() {
return getKey() + ": " + getValue();
}
});
e = e.after;
}
return all;
}
@Override
public Iterator<Map.Entry<String, String>> iterator() {
return entries().iterator();
}
@Override
public boolean isEmpty() {
return head == head.after;
}
@Override
public Set<String> names() {
Set<String> names = new TreeSet<>(String.CASE_INSENSITIVE_ORDER);
VertxHttpHeaders.MapEntry e = head.after;
while (e != head) {
names.add(e.getKey().toString());
e = e.after;
}
return names;
}
@Override
public VertxHttpHeaders clear() {
for (int i = 0; i < entries.length; i ++) {
entries[i] = null;
}
head.before = head.after = head;
return this;
}
public String toString() {
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry: this) {
sb.append(entry).append('\n');
}
return sb.toString();
}
@Override
public Integer getInt(CharSequence name) {
throw new UnsupportedOperationException();
}
@Override
public int getInt(CharSequence name, int defaultValue) {
throw new UnsupportedOperationException();
}
@Override
public Short getShort(CharSequence name) {
throw new UnsupportedOperationException();
}
@Override
public short getShort(CharSequence name, short defaultValue) {
throw new UnsupportedOperationException();
}
@Override
public Long getTimeMillis(CharSequence name) {
throw new UnsupportedOperationException();
}
@Override
public long getTimeMillis(CharSequence name, long defaultValue) {
throw new UnsupportedOperationException();
}
@Override
public Iterator<Map.Entry<CharSequence, CharSequence>> iteratorCharSequence() {
return new Iterator<Map.Entry<CharSequence, CharSequence>>() {
VertxHttpHeaders.MapEntry current = head.after;
@Override
public boolean hasNext() {
return current != head;
}
@Override
public Map.Entry<CharSequence, CharSequence> next() {
Map.Entry<CharSequence, CharSequence> next = current;
current = current.after;
return next;
}
};
}
@Override
public HttpHeaders addInt(CharSequence name, int value) {
throw new UnsupportedOperationException();
}
@Override
public HttpHeaders addShort(CharSequence name, short value) {
throw new UnsupportedOperationException();
}
@Override
public HttpHeaders setInt(CharSequence name, int value) {
throw new UnsupportedOperationException();
}
@Override
public HttpHeaders setShort(CharSequence name, short value) {
throw new UnsupportedOperationException();
}
private static final class MapEntry implements Map.Entry<CharSequence, CharSequence> {
final int hash;
final CharSequence key;
CharSequence value;
VertxHttpHeaders.MapEntry next;
VertxHttpHeaders.MapEntry before, after;
MapEntry() {
this.hash = -1;
this.key = null;
this.value = null;
}
MapEntry(int hash, CharSequence key, CharSequence value) {
this.hash = hash;
this.key = key;
this.value = value;
}
void remove() {
before.after = after;
after.before = before;
}
void addBefore(VertxHttpHeaders.MapEntry e) {
after = e;
before = e.before;
before.after = this;
after.before = this;
}
@Override
public CharSequence getKey() {
return key;
}
@Override
public CharSequence getValue() {
return value;
}
@Override
public CharSequence setValue(CharSequence value) {
Objects.requireNonNull(value, "value");
CharSequence oldValue = this.value;
this.value = value;
return oldValue;
}
@Override
public String toString() {
return getKey() + ": " + getValue();
}
}
private void remove0(int h, int i, CharSequence name) {
VertxHttpHeaders.MapEntry e = entries[i];
if (e == null) {
return;
}
for (;;) {
if (e.hash == h && AsciiString.contentEqualsIgnoreCase(name, e.key)) {
e.remove();
VertxHttpHeaders.MapEntry next = e.next;
if (next != null) {
entries[i] = next;
e = next;
} else {
entries[i] = null;
return;
}
} else {
break;
}
}
for (;;) {
VertxHttpHeaders.MapEntry next = e.next;
if (next == null) {
break;
}
if (next.hash == h && AsciiString.contentEqualsIgnoreCase(name, next.key)) {
e.next = next.next;
next.remove();
} else {
e = next;
}
}
}
private void add0(int h, int i, final CharSequence name, final CharSequence value) {
if (!(name instanceof AsciiString)) {
HttpUtils.validateHeader(name);
}
if (!(value instanceof AsciiString)) {
HttpUtils.validateHeader(value);
}
// Update the hash table.
VertxHttpHeaders.MapEntry e = entries[i];
VertxHttpHeaders.MapEntry newEntry;
entries[i] = newEntry = new VertxHttpHeaders.MapEntry(h, name, value);
newEntry.next = e;
// Update the linked list.
newEntry.addBefore(head);
}
private VertxHttpHeaders set0(final CharSequence name, final CharSequence strVal) {
int h = AsciiString.hashCode(name);
int i = index(h);
remove0(h, i, name);
add0(h, i, name, strVal);
return this;
}
private CharSequence get0(CharSequence name) {
int h = AsciiString.hashCode(name);
int i = index(h);
VertxHttpHeaders.MapEntry e = entries[i];
while (e != null) {
if (e.hash == h && AsciiString.contentEqualsIgnoreCase(name, e.key)) {
return e.getValue();
}
e = e.next;
}
return null;
}
private MultiMap set0(Iterable<Map.Entry<String, String>> map) {
clear();
for (Map.Entry<String, String> entry: map) {
add(entry.getKey(), entry.getValue());
}
return this;
}
}