com.metaeffekt.artifact.analysis.metascan.CopyrightScanSupport Maven / Gradle / Ivy

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/*
 * Copyright 2021-2024 the original author or authors.
 *
 * 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.metaeffekt.artifact.analysis.metascan;

import com.metaeffekt.artifact.analysis.utils.StringStats;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class CopyrightScanSupport {

    public CopyrightScanResult scanForCopyrights(StringStats text) {
        final CopyrightScanResult copyrightScanResult = new CopyrightScanResult();

        // phase 1 - seed
        Set seeds = new HashSet<>();

        seed(text, seeds, "copyright");
        seed(text, seeds, "Copyright");
        seed(text, seeds, "GmbH");
        seed(text, seeds, "Ltd");
        seed(text, seeds, "Inc");
        seed(text, seeds, "inc");
        seed(text, seeds, "(c)");
        seed(text, seeds, "(C)");
        seedRegexp(text, seeds, ".*?@.*?\\.com");

        return copyrightScanResult;
    }

    private void seed(StringStats text, Set seeds, String seed) {
        final int[] seedIndex = text.allMatches(StringStats.normalize(seed, true));
        for (int i : seedIndex) {
            seeds.add(new CopyrightSeed(seed, i));
        }
    }

    private void seedRegexp(StringStats text, Set seeds, String seedRegexp) {
        List seedIndexes = text.matchRegexp(StringStats.normalize(seedRegexp, true));
        if (seedIndexes == null) return;
        for (int[] i : seedIndexes) {
            seeds.add(new CopyrightSeed(seedRegexp, i[0]));
        }
    }

    private class CopyrightSeed {
        private String seed;
        private int index;

        CopyrightSeed(String seed, int index) {
            this.seed = seed;
            this.index = index;
        }

        @Override
        public String toString() {
            return "CopyrightSeed{" +
                    "seed='" + seed + '\'' +
                    ", index=" + index +
                    '}';
        }
    }
}