org.apache.cayenne.gen.internal.Utils Maven / Gradle / Ivy

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package org.apache.cayenne.gen.internal;

import org.apache.cayenne.CayenneRuntimeException;
import org.apache.cayenne.map.DataMap;

import java.io.File;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Optional;

/**
 * Internally used utilities related to cgen.
 *
 * @since 5.0
 */
public class Utils {

    public static Optional getMavenSrcPathForPath(Path path) {
        return getMavenSrcPathForPath(path.toAbsolutePath().toString());
    }

    /**
     * @param path to check
     * @return path in the maven src layout or {@code Optional.empty()} if we are not inside maven project structure
     */
    public static Optional getMavenSrcPathForPath(String path) {
        // check if we are in src/test/resources
        String testDirPath = checkDefaultMavenResourceDir(path, "test");
        if(testDirPath != null) {
            return Optional.of(testDirPath);
        }

        // check if we are in src/main/resources
        String mainDirPath =  checkDefaultMavenResourceDir(path, "main");
        if(mainDirPath != null) {
            return Optional.of(mainDirPath);
        }

        return Optional.empty();
    }

    public static Path getRootPathForDataMap(DataMap dataMap) {
        if(dataMap.getConfigurationSource() == null) {
            throw new CayenneRuntimeException("Unable to create path from the unsaved DataMap");
        }
        Path resourcePath;
        try {
            resourcePath = Path.of(dataMap.getConfigurationSource().getURL().toURI());
        } catch (URISyntaxException e) {
            throw new CayenneRuntimeException("Unable to create path from the DataMap source location", e);
        }
        if (Files.isRegularFile(resourcePath)) {
            resourcePath = resourcePath.getParent();
        }
        return resourcePath;
    }

    private static String checkDefaultMavenResourceDir(String path, String dirType) {
        String resourcePath = buildFilePath("src", dirType, "resources");
        int idx = path.indexOf(resourcePath);
        if (idx < 0) {
            return null;
        }
        return path.substring(0, idx) + buildFilePath("src", dirType, "java");
    }

    private static String buildFilePath(String... pathElements) {
        return String.join(File.separator, pathElements);
    }
}