PatternIdentifierParser.java
/*
* Portions of this software was developed by employees of the National Institute
* of Standards and Technology (NIST), an agency of the Federal Government and is
* being made available as a public service. Pursuant to title 17 United States
* Code Section 105, works of NIST employees are not subject to copyright
* protection in the United States. This software may be subject to foreign
* copyright. Permission in the United States and in foreign countries, to the
* extent that NIST may hold copyright, to use, copy, modify, create derivative
* works, and distribute this software and its documentation without fee is hereby
* granted on a non-exclusive basis, provided that this notice and disclaimer
* of warranty appears in all copies.
*
* THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
* EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
* THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
* INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
* SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT
* SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
* INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
* OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
* CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
* PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
* OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
*/
package gov.nist.secauto.oscal.lib.profile.resolver.policy;
import gov.nist.secauto.metaschema.model.common.util.ObjectUtils;
import gov.nist.secauto.oscal.lib.profile.resolver.ProfileResolutionEvaluationException;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import edu.umd.cs.findbugs.annotations.NonNull;
public class PatternIdentifierParser implements IIdentifierParser {
private final Pattern pattern;
private final int identifierGroup;
@SuppressWarnings("null")
public PatternIdentifierParser(@NonNull String pattern, int identifierGroup) {
this(Pattern.compile(pattern), identifierGroup);
}
public PatternIdentifierParser(@NonNull Pattern pattern, int identifierGroup) {
this.pattern = Objects.requireNonNull(pattern, "pattern");
this.identifierGroup = identifierGroup;
}
public Pattern getPattern() {
return pattern;
}
public int getIdentifierGroup() {
return identifierGroup;
}
@Override
public String parse(@NonNull String referenceText) {
Matcher matcher = getPattern().matcher(referenceText);
String retval = null;
if (matcher.matches()) {
retval = matcher.group(getIdentifierGroup());
}
return retval;
}
@Override
public String update(@NonNull String referenceText, @NonNull String newIdentifier) {
Matcher matcher = getPattern().matcher(referenceText);
if (!matcher.matches()) {
throw new ProfileResolutionEvaluationException(
String.format("The original reference '%s' did not match the pattern '%s'.",
referenceText, getPattern().pattern()));
}
return ObjectUtils.notNull(new StringBuilder(referenceText)
.replace(
matcher.start(getIdentifierGroup()),
matcher.end(getIdentifierGroup()),
newIdentifier)
.toString());
}
}