import javax.annotation.Nullable;
import java.util.Objects;
import java.util.Set;

public class DefaultExclude implements Exclude {
    private final ModuleIdentifier moduleId;
    private final IvyArtifactName artifact;
    private final Set<String> configurations;
    private final String patternMatcher;

    public DefaultExclude(ModuleIdentifier id, IvyArtifactName artifact, String[] configurations, @Nullable String patternMatcher) {

        this.moduleIdentifierFactory = moduleIdentifierFactory;
    }

    @Override
    public DefaultExclude convertExcludeRule(ExcludeRule excludeRule) {
        return createExcludeRule(excludeRule.getGroup(), excludeRule.getModule());
    }

    @Override
    public DefaultExclude createExcludeRule(String group, String module) {
        group = GUtil.elvis(group, PatternMatchers.ANY_EXPRESSION);

        def defaultExclude = '.gitignore'
        def defaultExcludeFile = file("input/$defaultExclude")
        defaultExcludeFile << "some content"

        settingsFile << removeDefaultExclude(defaultExclude)

        when:
        run "copyTask"
        then:
        executedAndNotSkipped(":copyTask")
        file("build/output/$defaultExclude").exists()

        when:

    }

    def "applies exclude rules when traversing a configuration"() {
        def exclude1 = new DefaultExclude(DefaultModuleIdentifier.newId("group1", "*"), ["from"] as String[], PatternMatchers.EXACT)
        def exclude2 = new DefaultExclude(DefaultModuleIdentifier.newId("group2", "*"), ["from"] as String[], PatternMatchers.EXACT)
        def dep = createWithExcludes(requested, [exclude1, exclude2])

            for (String defaultExclude : defaultExcludes) {
                if (defaultExclude.startsWith("**/")) {
                    defaultExclude = defaultExclude.substring(3);
                }
                int length = defaultExclude.length();
                if (defaultExclude.endsWith("/**")) {
                    excludeDirs.add(defaultExclude.substring(0, length - 3));
                } else {

        assert artifact.name == artifactDescriptor.name
        assert artifact.type == artifactDescriptor.type
    }

    private static DefaultExclude getTestExcludeRule() {
        return new DefaultExclude(DefaultModuleIdentifier.newId("org", "testOrg"))
    }

    }

    def "applies matching exclude rules"() {
        def exclude1 = new DefaultExclude(DefaultModuleIdentifier.newId("group1", "*"), ["from"] as String[], PatternMatchers.EXACT)
        def exclude2 = new DefaultExclude(DefaultModuleIdentifier.newId("group2", "*"), ["*"] as String[], PatternMatchers.EXACT)
        def exclude3 = new DefaultExclude(DefaultModuleIdentifier.newId("group3", "*"), ["other"] as String[], PatternMatchers.EXACT)

import org.gradle.internal.component.external.descriptor.Artifact
import org.gradle.internal.component.external.descriptor.Configuration
import org.gradle.internal.component.external.descriptor.DefaultExclude
import org.gradle.internal.component.model.DefaultIvyArtifactName
import org.gradle.internal.component.model.DependencyMetadata
import org.gradle.internal.component.model.ImmutableModuleSources

        if (excluded.isEmpty()) {
            excluded = getDependencyMgtExclusions(dep);
        }
        for (ModuleIdentifier excludedModule : excluded) {
            DefaultExclude rule = new DefaultExclude(excludedModule);
            excludes.add(rule);
        }

        dependencies.add(new MavenDependencyDescriptor(scope, dependencyType, selector, dependencyArtifact, excludes));
    }

            for (int i = 0; i < len; i++) {
                String moduleOrg = readString();
                String moduleName = readString();
                DefaultExclude rule = new DefaultExclude(moduleIdentifierFactory.module(moduleOrg, moduleName));
                result.add(rule);
            }
            return result;
        }

        private int readCount() throws IOException {