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RqCookies.java
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RqCookies.java
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/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2019 Yegor Bugayenko
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.takes.facets.cookies;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import lombok.EqualsAndHashCode;
import org.takes.Request;
import org.takes.misc.EnglishLowerCase;
import org.takes.misc.Sprintf;
import org.takes.misc.VerboseIterable;
import org.takes.rq.RqHeaders;
import org.takes.rq.RqWrap;
/**
* HTTP cookies parsing.
*
* <p>All implementations of this interface must be immutable and thread-safe.
* @since 0.14
*/
public interface RqCookies extends Request {
/**
* Get single cookie.
* @param name Cookie name
* @return List of values (can be empty)
* @throws IOException If fails
*/
Iterable<String> cookie(CharSequence name) throws IOException;
/**
* Get all cookie names.
* @return All names
* @throws IOException If fails
*/
Iterable<String> names() throws IOException;
/**
* Request decorator, for HTTP cookies parsing.
*
* <p>The class is immutable and thread-safe.
* @since 0.14
*/
@EqualsAndHashCode(callSuper = true)
final class Base extends RqWrap implements RqCookies {
/**
* Ctor.
* @param req Original request
*/
public Base(final Request req) {
super(req);
}
@Override
public Iterable<String> cookie(final CharSequence key)
throws IOException {
final Map<String, String> map = this.map();
final String value = map.getOrDefault(
new EnglishLowerCase(key.toString()).string(),
""
);
final Iterable<String> iter;
if (value.isEmpty()) {
iter = new VerboseIterable<>(
Collections.<String>emptyList(),
new Sprintf(
// @checkstyle LineLengthCheck (1 line)
"There are no Cookies by name \"%s\" among %d others: %s",
key, map.size(), map.keySet()
)
);
} else {
iter = new VerboseIterable<>(
Collections.singleton(value),
new Sprintf(
"There is always only one Cookie by name \"%s\"",
key
)
);
}
return iter;
}
@Override
public Iterable<String> names() throws IOException {
return this.map().keySet();
}
/**
* Parse them all in a map.
* @return Map of them
* @throws IOException If fails
*/
private Map<String, String> map() throws IOException {
final Map<String, String> map = new HashMap<>(0);
final Iterable<String> values =
new RqHeaders.Base(this).header("Cookie");
for (final String value : values) {
for (final String pair : value.split(";")) {
final String[] parts = pair.split("=", 2);
final String key =
new EnglishLowerCase(parts[0].trim()).string();
if (parts.length > 1 && !parts[1].isEmpty()) {
map.put(key, parts[1].trim());
} else {
map.remove(key);
}
}
}
return map;
}
}
}