org.apache.james.mailbox.model.Cid Maven / Gradle / Ivy
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package org.apache.james.mailbox.model;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
public class Cid {
public static Cid from(String cidAsString) {
Preconditions.checkNotNull(cidAsString);
Preconditions.checkArgument(!cidAsString.isEmpty(), "'cidAsString' is mandatory");
return new Cid(normalizedCid(cidAsString));
}
private static String normalizedCid(String input) {
if (isWrappedWithAngleBrackets(input)) {
return unwrap(input);
}
return input;
}
private static String unwrap(String cidAsString) {
return cidAsString.substring(1, cidAsString.length() - 1);
}
private static boolean isWrappedWithAngleBrackets(String cidAsString) {
return cidAsString.startsWith("<") && cidAsString.endsWith(">");
}
private final String value;
private Cid(String value) {
this.value = value;
}
public String getValue() {
return value;
}
@Override
public final boolean equals(Object obj) {
if (obj instanceof Cid) {
Cid other = (Cid) obj;
return Objects.equal(this.value, other.value);
}
return false;
}
@Override
public final int hashCode() {
return Objects.hashCode(this.value);
}
}