// Copyright 2022 Code Intelligence GmbH
//
// 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.

package com.example;

import com.code_intelligence.jazzer.api.FuzzedDataProvider;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

public class RegexCanonEqInjection {
  public static void fuzzerTestOneInput(FuzzedDataProvider data) {
    String input = data.consumeRemainingAsString();
    try {
      Pattern.compile(Pattern.quote(input), Pattern.CANON_EQ);
    } catch (PatternSyntaxException ignored) {
    } catch (IllegalArgumentException ignored) {
      // "[媼" generates an IllegalArgumentException but only on Windows using
      // Java 8. We ignore this for now.
      //
      // java.lang.IllegalArgumentException
      //	at java.lang.AbstractStringBuilder.appendCodePoint(AbstractStringBuilder.java:800)
      //	at java.lang.StringBuilder.appendCodePoint(StringBuilder.java:240)
      //	at java.util.regex.Pattern.normalizeCharClass(Pattern.java:1430)
      //	at java.util.regex.Pattern.normalize(Pattern.java:1396)
      //	at java.util.regex.Pattern.compile(Pattern.java:1665)
      //	at java.util.regex.Pattern.<init>(Pattern.java:1352)
      //	at java.util.regex.Pattern.compile(Pattern.java:1054)
    }
  }
}