hr.com.vgv.verano.http.parts.Header Maven / Gradle / Ivy
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Vedran Grgo Vatavuk
*
* 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 NONINFRINGEMENT. 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 hr.com.vgv.verano.http.parts;
import hr.com.vgv.verano.http.Dict;
import hr.com.vgv.verano.http.DictInput;
import hr.com.vgv.verano.http.KvpOf;
import org.cactoos.Text;
/**
* Http header.
* @since 1.0
*/
public class Header extends DictInput.Envelope {
/**
* Ctor.
* @param key Key
* @param value Value
*/
public Header(final String key, final String value) {
super(new KvpOf(Header.buildKey(key), value));
}
/**
* Build header key in dictionary.
* @param key Key
* @return Key Key
*/
private static String buildKey(final String key) {
return String.format("h.%s", Header.normalize(key));
}
/**
* Normalize key.
* Taken from https://github.com/jcabi/jcabi-http.
* Author: Yegor Bugayenko ([email protected])
* @param key The key to normalize
* @return Normalized key
*/
private static String normalize(final String key) {
final char[] chars = key.toCharArray();
chars[0] = Header.upper(chars[0]);
for (int pos = 1; pos < chars.length; ++pos) {
if (chars[pos - 1] == '-') {
chars[pos] = Header.upper(chars[pos]);
}
}
return new String(chars);
}
/**
* Convert char to upper case, if required.
* Taken from https://github.com/jcabi/jcabi-http.
* Author: Yegor Bugayenko ([email protected])
* @param chr The char to convert
* @return Upper-case char
*/
private static char upper(final char chr) {
final char upper;
if (chr >= 'a' && chr <= 'z') {
upper = (char) (chr - ('a' - 'A'));
} else {
upper = chr;
}
return upper;
}
/**
* Header from dictionary.
*/
public static class Of implements Text {
/**
* Parameter key.
*/
private final String key;
/**
* Dictionary.
*/
private final Dict dict;
/**
* Ctor.
* @param key Key
* @param dict Dictionary
*/
public Of(final String key, final Dict dict) {
this.key = key;
this.dict = dict;
}
@Override
public final String asString() {
final String dkey = Header.buildKey(this.key);
if (this.dict.contains(dkey)) {
return this.dict.get(dkey);
}
throw new IllegalStateException(
String.format("Header %s not found.", this.key)
);
}
}
}