org.eclim.plugin.core.command.archive.ArchiveReadCommand.java Source code

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Here is the source code for org.eclim.plugin.core.command.archive.ArchiveReadCommand.java

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/**
 * Copyright (C) 2005 - 2010  Eric Van Dewoestine
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.eclim.plugin.core.command.archive;

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

import java.util.regex.Pattern;

import org.apache.commons.lang.SystemUtils;

import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystemManager;
import org.apache.commons.vfs.VFS;

import org.eclim.annotation.Command;

import org.eclim.command.CommandLine;
import org.eclim.command.Options;

import org.eclim.plugin.core.command.AbstractCommand;

import org.eclim.util.IOUtils;

/**
 * Command to read a file from a commons vfs compatable path.
 *
 * @author Eric Van Dewoestine
 */
@Command(name = "archive_read", options = "REQUIRED f file ARG")
public class ArchiveReadCommand extends AbstractCommand {
    private static final String URI_PREFIX = "file://";
    private static final Pattern WIN_PATH = Pattern.compile("^/[a-zA-Z]:/.*");

    /**
     * {@inheritDoc}
     */
    public String execute(CommandLine commandLine) throws Exception {
        InputStream in = null;
        OutputStream out = null;
        FileSystemManager fsManager = null;
        try {
            String file = commandLine.getValue(Options.FILE_OPTION);

            fsManager = VFS.getManager();
            FileObject fileObject = fsManager.resolveFile(file);
            FileObject tempFile = fsManager
                    .resolveFile(SystemUtils.JAVA_IO_TMPDIR + "/eclim/" + fileObject.getName().getPath());

            // the vfs file cache isn't very intelligent, so clear it.
            fsManager.getFilesCache().clear(fileObject.getFileSystem());
            fsManager.getFilesCache().clear(tempFile.getFileSystem());

            // NOTE: FileObject.getName().getPath() does not include the drive
            // information.
            String path = tempFile.getName().getURI().substring(URI_PREFIX.length());
            // account for windows uri which has an extra '/' in front of the drive
            // letter (file:///C:/blah/blah/blah).
            if (WIN_PATH.matcher(path).matches()) {
                path = path.substring(1);
            }

            //if(!tempFile.exists()){
            tempFile.createFile();

            in = fileObject.getContent().getInputStream();
            out = tempFile.getContent().getOutputStream();
            IOUtils.copy(in, out);

            new File(path).deleteOnExit();
            //}

            return path;
        } finally {
            IOUtils.closeQuietly(in);
            IOUtils.closeQuietly(out);
        }
    }
}