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/**
* ============LICENSE_START====================================================
* org.onap.aaf
* ===========================================================================
* Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
* ===========================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END====================================================
*
*/
package org.onap.aaf.auth.helpers;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Iterator;
public class InputIterator implements Iterable<String> {
private BufferedReader in;
private final PrintStream out;
private final String prompt, instructions;
public InputIterator(BufferedReader in, PrintStream out, String prompt, String instructions) {
this.in = in;
this.out = out;
this.prompt = prompt;
this.instructions = instructions;
}
@Override
public Iterator<String> iterator() {
out.println(instructions);
return new Iterator<String>() {
String input;
@Override
public boolean hasNext() {
out.append(prompt);
try {
input = in.readLine();
} catch (IOException e) {
input = null;
return false;
}
return input.length()>0;
}
@Override
public String next() {
return input;
}
@Override
public void remove() {
}
};
}
}
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