com.carrotgarden.eclipse.fileinstall.util.ProjectUtil.java Source code

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Here is the source code for com.carrotgarden.eclipse.fileinstall.util.ProjectUtil.java

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/**
 * Copyright (C) 2010-2013 Andrei Pozolotin <Andrei.Pozolotin@gmail.com>
 *
 * All rights reserved. Licensed under the OSI BSD License.
 *
 * http://www.opensource.org/licenses/bsd-license.php
 */
package com.carrotgarden.eclipse.fileinstall.util;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.io.IOUtils;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;

import com.carrotgarden.eclipse.fileinstall.Plugin;

/**
 * Eclipse project helper.
 */
public class ProjectUtil {

    /**
     * Extract class path resource to the file system.
     */
    public static void copyFromClasspathIntoProject(
            //
            final Class<?> klaz, //
            final String sourcePath, //
            final IProject project, //
            final String targetPath //
    ) throws Exception {

        final InputStream input = klaz.getResourceAsStream(sourcePath);

        final File target = file(project, targetPath);

        if (!target.exists()) {
            target.getParentFile().mkdirs();
        }

        final OutputStream output = new FileOutputStream(target);

        IOUtils.copy(input, output);

        input.close();
        output.close();

    }

    /**
     * File located inside the project.
     */
    public static File file(//
            final IProject project, //
            final String targetPath //
    ) {
        return project.getFile(targetPath).getLocation().toFile();
    }

    /**
     * Verify project has a file.
     */
    public static boolean hasFile(//
            final IProject project, //
            final String targetPath //
    ) {
        return file(project, targetPath).exists();
    }

    /**
     * Report project problem severity.
     */
    public static int severity(final IProject project) {
        try {
            final int severity = project.findMaxProblemSeverity(IMarker.PROBLEM, true, IResource.DEPTH_INFINITE);
            // Plugin.logInfo("ProjectUtil#severity = " + severity + " @ "
            // + project);
            return severity;
        } catch (final Throwable e) {
            Plugin.logErrr("ProjectUtil#severity failure", e);
            return IMarker.SEVERITY_ERROR;
        }

    }

    /**
     * Manifest file name.
     */
    public static final String MANIFEST_FILE = //
            "MANIFEST.MF";

    /**
     * Manifest location on class path.
     */
    public static final String MANIFEST_PATH = //
            "META-INF" + "/" + MANIFEST_FILE;

    /**
     * Location of build manifest in the maven project.
     */
    public static final String MANIFEST_MAVEN = //
            "target/classes" + "/" + MANIFEST_PATH;

    /**
     * Report project manifest file; can be missing.
     */
    public static File manifest(final IProject project) {
        final File file = manifestDiscover(project);
        Plugin.logOK("ProjectUtil#manifest: file: " + file);
        return file;
    }

    /**
     * Discover project manifest from multiple locations.
     */
    private static File manifestDiscover(final IProject project) {
        if (NatureUtil.hasJavaNature(project)) {
            try {
                final IJavaProject java = JavaCore.create(project);
                final IPath output = java.getOutputLocation().makeRelativeTo(project.getFullPath());
                final IFile manifest = project.getFolder(output).getFile(MANIFEST_PATH);
                return manifest.getLocation().toFile();
            } catch (final Throwable e) {
                Plugin.logErrr("ProjectUtil#manifest: failure", e);
                return manifestDefault(project);
            }
        }
        return manifestDefault(project);
    }

    /**
     * Defautl manifest location.
     */
    private static File manifestDefault(final IProject project) {
        return file(project, MANIFEST_MAVEN);
    }

}