org.commonjava.maven.ext.manip.util.IdUtils.java Source code

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Here is the source code for org.commonjava.maven.ext.manip.util.IdUtils.java

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/*******************************************************************************
 * Copyright (c) 2014 Red Hat, Inc..
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Red Hat, Inc. - initial API and implementation
 ******************************************************************************/
package org.commonjava.maven.ext.manip.util;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.maven.model.Model;
import org.apache.maven.model.Parent;
import org.apache.maven.project.MavenProject;
import org.commonjava.maven.atlas.ident.ref.InvalidRefException;
import org.commonjava.maven.atlas.ident.ref.ProjectVersionRef;
import org.commonjava.maven.ext.manip.model.Project;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Convenience utilities for converting {@link Model} and {@link MavenProject} instances to GA / GAV strings.
 *
 * @author jdcasey
 */
public final class IdUtils {
    private static final Logger LOGGER = LoggerFactory.getLogger(IdUtils.class);

    /**
     * Regex pattern for parsing a Maven GAV
     */
    public static final Pattern gavPattern = Pattern
            .compile("\\s*([\\w\\-_.]+):([\\w\\-_.]+):(\\d[\\w\\-_.]+)\\s*");

    private IdUtils() {
    }

    /**
     * Splits the value on ',', then wraps each value in {@link ProjectVersionRef#parse(String)} and prints a warning / skips in the event of a 
     * parsing error. Returns null if the input value is null.
     */
    public static List<ProjectVersionRef> parseGAVs(final String value) {
        if (value == null || value.length() == 0) {
            return null;
        } else {
            final String[] gavs = value.split(",");
            final List<ProjectVersionRef> refs = new ArrayList<ProjectVersionRef>();
            for (final String gav : gavs) {
                try {
                    final ProjectVersionRef ref = ProjectVersionRef.parse(gav);
                    refs.add(ref);
                } catch (final InvalidRefException e) {
                    LOGGER.warn("Skipping invalid remote management GAV: " + gav);
                }
            }

            return refs;
        }
    }

    public static boolean validGav(final String gav) {
        final Matcher matcher = gavPattern.matcher(gav);
        return matcher.matches();
    }

    public static String gav(final MavenProject project) {
        return String.format("%s:%s:%s", project.getGroupId(), project.getArtifactId(), project.getVersion());
    }

    public static String gav(final Project project) {
        return String.format("%s:%s:%s", project.getGroupId(), project.getArtifactId(), project.getVersion());
    }

    public static String gav(final Model model) {
        String g = model.getGroupId();
        String v = model.getVersion();

        final Parent p = model.getParent();
        if (p != null) {
            if (g == null) {
                g = p.getGroupId();
            }

            if (v == null) {
                v = p.getVersion();
            }
        }

        return String.format("%s:%s:%s", g, model.getArtifactId(), v);
    }

    public static String ga(final Model model) {
        String g = model.getGroupId();

        final Parent p = model.getParent();
        if (p != null) {
            if (g == null) {
                g = p.getGroupId();
            }
        }

        return ga(g, model.getArtifactId());
    }

    public static String ga(final MavenProject project) {
        return ga(project.getGroupId(), project.getArtifactId());
    }

    public static String ga(final Project project) {
        return ga(project.getGroupId(), project.getArtifactId());
    }

    public static String ga(final Parent project) {
        return ga(project.getGroupId(), project.getArtifactId());
    }

    public static String ga(final String g, final String a) {
        return String.format("%s:%s", g, a);
    }

    public static String gav(final String g, final String a, final String v) {
        return String.format("%s:%s:%s", g, a, v);
    }

}