com.github.robtimus.maven.plugins.resourcelist.ResourceListClass.template Maven / Gradle / Ivy

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A Maven plugin that can create lists of resources

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package ${package};

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UncheckedIOException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Objects;
import java.util.function.Consumer;
import java.util.function.UnaryOperator;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.annotation.Generated;

@Generated("resource-list-maven-plugin")
${visibility}final class ${className} {

    private static final String RESOURCE_LIST_RESOURCE = "/${resourceListFile}";

    private static final ${className} ABSOLUTE = new ${className}(s -> "/" + s); //$NON-NLS-1$
    private static final ${className} RELATIVE = new ${className}(UnaryOperator.identity());

    private final UnaryOperator resourceModifier;

    private ${className}(UnaryOperator resourceModifier) {
        this.resourceModifier = resourceModifier;
    }

    ${visibility}static ${className} absolute() {
        return ABSOLUTE;
    }

    ${visibility}static ${className} relative() {
        return RELATIVE;
    }

    ${visibility}Stream stream() {
        BufferedReader reader = reader();
        return reader.lines()
                .onClose(() -> {
                    try {
                        reader.close();
                    } catch (IOException e) {
                        throw new UncheckedIOException(e);
                    }
                })
                .map(resourceModifier);
    }

    ${visibility}List list() {
        try (BufferedReader reader = reader()) {
            return reader.lines()
                    .map(resourceModifier)
                    .collect(Collectors.toList());
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    ${visibility}void forEach(Consumer action) {
        Objects.requireNonNull(action);
        try (BufferedReader reader = reader()) {
            reader.lines()
                    .map(resourceModifier)
                    .forEach(action);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    private BufferedReader reader() {
        InputStream inputStream = getClass().getResourceAsStream(RESOURCE_LIST_RESOURCE);
        InputStreamReader inputStreamReader = new InputStreamReader(inputStream, StandardCharsets.UTF_8);
        return new BufferedReader(inputStreamReader);
    }
}