com.linuxbox.enkive.message.AbstractMessage.java Source code

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Here is the source code for com.linuxbox.enkive.message.AbstractMessage.java

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/*******************************************************************************
 * Copyright 2013 The Linux Box Corporation.
 *
 * This file is part of Enkive CE (Community Edition).
 *
 * Enkive CE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * Enkive CE 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with Enkive CE. If not, see
 * <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.linuxbox.enkive.message;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;

import name.fraser.neil.plaintext.diff_match_patch;
import name.fraser.neil.plaintext.diff_match_patch.Patch;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.james.mime4j.dom.Header;

import com.linuxbox.enkive.exception.BadMessageException;

public abstract class AbstractMessage extends AbstractMessageSummary implements Message {

    protected final static Log LOGGER = LogFactory.getLog("com.linuxbox.enkive.message");

    protected String mimeVersion;
    protected String contentType = "";
    protected String contentTransferEncoding;
    protected ContentHeader contentHeader;
    protected Header parsedHeader;
    protected String messageDiff;
    protected diff_match_patch differ;

    public AbstractMessage() {
        super();
        mailFrom = "";
        rcptTo = new ArrayList<String>();
        to = new ArrayList<String>();
        cc = new ArrayList<String>();
        differ = new diff_match_patch();
    }

    @Override
    public String getMimeVersion() {
        return mimeVersion;
    }

    @Override
    public ContentHeader getContentHeader() {
        return contentHeader;
    }

    @Override
    public void setContentHeader(ContentHeader contentHeader) {
        this.contentHeader = contentHeader;
    }

    @Override
    public void setOriginalHeaders(String originalHeaders) {
        super.setOriginalHeaders(originalHeaders);
        try {
            parseHeaders(originalHeaders);
        } catch (BadMessageException e) {
            LOGGER.warn("Error parsing message headers", e);
        } catch (IOException e) {
            LOGGER.warn("Error parsing message headers", e);
        }
    }

    @Override
    public void setMimeVersion(String mimeVersion) {
        this.mimeVersion = mimeVersion;
    }

    public String getContentType() {
        return contentType;
    }

    public void setContentType(String contentType) {
        this.contentType = contentType;
    }

    public String getContentTransferEncoding() {
        return contentTransferEncoding;
    }

    public void setContentTransferEncoding(String contentTransferEncoding) {
        this.contentTransferEncoding = contentTransferEncoding;
    }

    @Override
    public void pushReconstitutedEmail(Writer output) throws IOException {
        PrintWriter writer = new PrintWriter(output);
        writer.print(getReconstitutedEmail());
        writer.flush();
    }

    @Override
    public String getReconstitutedEmail() throws IOException {
        return (String) differ.patch_apply((LinkedList<Patch>) differ.patch_fromText(getMessageDiff()),
                getUnpatchedEmail())[0];
    }

    protected String getUnpatchedEmail() throws IOException {
        StringWriter out = new StringWriter();
        PrintWriter writer = new PrintWriter(out);
        writer.print(originalHeaders);
        writer.flush();
        contentHeader.pushReconstitutedEmail(writer);
        return out.toString();
    }

    public void setParsedHeader(Header parsedHeader) {
        this.parsedHeader = parsedHeader;
    }

    public Header getParsedHeader() {
        return parsedHeader;
    }

    public Set<String> getAttachmentFileNames() {
        Set<String> result = new HashSet<String>();

        return result;
    }

    public Set<String> getAttachmentMimeTypes() {
        Set<String> result = new HashSet<String>();

        return result;
    }

    public String getMessageDiff() {
        return messageDiff;
    }

    public void setMessageDiff(String messageDiff) {
        this.messageDiff = messageDiff;
    }

    /**
     * Parses the original headers and puts data in the attributes.
     * 
     * @param originalHeaders
     * @throws IOException
     * @throws BadMessageException
     */
    protected abstract void parseHeaders(String originalHeaders) throws IOException, BadMessageException;

}