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package org.apache.tomcat.util.collections;
import org.apache.tomcat.util.buf.MessageBytes;
import java.io.*;
import java.util.*;
import java.text.*;
/** Enumerate the distinct header names.
Each nextElement() is O(n) ( a comparation is
done with all previous elements ).
This is less frequesnt than add() -
we want to keep add O(1).
*/
public final class MultiMapNamesEnumeration implements Enumeration {
int pos;
int size;
String next;
MultiMap headers;
// toString and unique options are not implemented -
// we allways to toString and unique.
/** Create a new multi-map enumeration.
* @param headers the collection to enumerate
* @param toString convert each name to string
* @param unique return only unique names
*/
MultiMapNamesEnumeration(MultiMap headers, boolean toString,
boolean unique) {
this.headers=headers;
pos=0;
size = headers.size();
findNext();
}
private void findNext() {
next=null;
for( ; pos< size; pos++ ) {
next=headers.getName( pos ).toString();
for( int j=0; j