com.smartcodeltd.ReleaseCandidateMojo Maven / Gradle / Ivy

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Enabling Continuous Delivery with Maven

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package com.smartcodeltd;

import com.google.common.io.CharStreams;
import com.google.common.io.Files;
import com.smartcodeltd.domain.Version;
import de.pdark.decentxml.Document;
import de.pdark.decentxml.XMLParser;
import de.pdark.decentxml.XMLSource;
import de.pdark.decentxml.XMLStringSource;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.project.MavenProject;

import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.nio.charset.Charset;

abstract public class ReleaseCandidateMojo
    extends AbstractMojo
{
    private final static String default_encoding        = "UTF-8";

    protected final Charset charset;

    /**
     * Encoding used when reading from and writing to files on disk.
     */
    @Parameter(defaultValue = default_encoding, required = false)
    protected String encoding;

    @Parameter(defaultValue = "${project}", readonly = true )
    protected MavenProject project;

    public ReleaseCandidateMojo() {
        this.charset = Charset.forName(getOrElse(encoding, default_encoding));
    }

    protected void info(String template, Object... values) {
        getLog().info(String.format(template, values));
    }

    protected  T with(T value) {
        return value;
    }

    protected Version versionOf(MavenProject project) {
        return new Version(project.getVersion());
    }

    protected MavenProject root(MavenProject project) {
        return project.hasParent()
                ? project.getParent()
                : project;
    }

    protected  T getOrElse(T value, T defaultValue) {
        return value != null ? value : defaultValue;
    }

    protected Document parsed(File pom) throws IOException {
        XMLParser parser = new XMLParser();
        XMLSource source = new XMLStringSource(CharStreams.toString(Files.newReader(pom, charset)));

        return parser.parse(source);
    }
}