src/main/java/org/takes/facets/flash/XeFlash.java
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2024 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.flash;
import java.io.IOException;
import java.net.URLDecoder;
import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import lombok.EqualsAndHashCode;
import org.takes.Request;
import org.takes.facets.cookies.RqCookies;
import org.takes.rs.xe.XeSource;
import org.xembly.Directive;
import org.xembly.Directives;
/**
* Xembly source to show flash message in XML.
*
* <p>The class is immutable and thread-safe.
*
* @since 0.1
*/
@EqualsAndHashCode
public final class XeFlash implements XeSource {
/**
* Compiled RsFlash message regexp pattern.
*/
private static final Pattern PTN = Pattern.compile(
"^(.*?)/(.*?)$"
);
/**
* Request.
*/
private final Request req;
/**
* Cookie name.
*/
private final String cookie;
/**
* Ctor.
* @param request Request
*/
public XeFlash(final Request request) {
this(request, RsFlash.class.getSimpleName());
}
/**
* Ctor.
* @param request Request
* @param name Cookie name
*/
public XeFlash(final Request request, final String name) {
this.req = request;
this.cookie = name;
}
@Override
public Iterable<Directive> toXembly() throws IOException {
final Iterator<String> cookies =
new RqCookies.Base(this.req).cookie(this.cookie).iterator();
final Directives dirs = new Directives();
if (cookies.hasNext()) {
final Matcher matcher = XeFlash.PTN.matcher(cookies.next());
if (matcher.find()) {
dirs.add("flash")
.add("message").set(
URLDecoder.decode(
matcher.group(1),
Charset.defaultCharset().name()
)
).up()
.add("level").set(matcher.group(2));
}
}
return dirs;
}
}