src/com/android/exchange/Rfc822Formatter.java - platform/packages/apps/Exchange - Git at Google

 /*
  * Copyright (C) 2008-2009 Marc Blank
  * Licensed to The Android Open Source Project.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.exchange;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.StringWriter;
 import java.io.Writer;
 import java.text.SimpleDateFormat;
 import java.util.Date;

 import com.android.email.provider.EmailContent;

 import android.content.ContentUris;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
 import android.text.Html;
 import android.text.SpannedString;
 import android.util.Log;

 public class Rfc822Formatter {

     static final SimpleDateFormat rfc822DateFormat = new SimpleDateFormat("dd MMM yy HH:mm:ss Z");
     static final SimpleDateFormat friendlyDateFormat = new SimpleDateFormat("MMM dd, yyyy");
     static final SimpleDateFormat friendlyTimeFormat = new SimpleDateFormat("hh:mm a");

     static public final String HTML_DRAFT_HEADER = "<!--AMDraft-->";
     static public final String HTML_REPLY_HEADER = "<!--AMReply-->";

     static final String CRLF = "\r\n";

     static public String writeEmailAsRfc822String (Context context, EmailContent.Account acct,
             EmailContent.Message msg, String uniqueId) throws IOException {
         StringWriter w = new StringWriter();
         writeEmailAsRfc822(context, acct, msg, w, uniqueId);
         return w.toString();
     }

     static public boolean writeEmailAsRfc822 (Context context, EmailContent.Account acct,
             EmailContent.Message msg, Writer writer, String uniqueId) throws IOException {
         // For now, multi-part alternative means an HTML reply...
         boolean alternativeParts = false;

         Uri u = ContentUris.withAppendedId(EmailContent.Message.CONTENT_URI, msg.mId)
             .buildUpon().appendPath("attachment").build();
         Cursor c = context.getContentResolver().query(u, EmailContent.Attachment.CONTENT_PROJECTION,
                 null, null, null);
         try {
             if (c.moveToFirst())
                 Log.v("Rfc822", "Has attachments");
         } finally {
             c.close();
         }
         //**PROVIDER
         boolean mixedParts = false; //(!msg.attachments.isEmpty());
         EmailContent.Message reply = null;
         boolean forward = false;

         long referenceId = msg.mReferenceKey;
         if (referenceId != 0) {
             if (referenceId < 0) {
                 referenceId = 0 - referenceId;
                 forward = true;
             }
             reply = EmailContent.Message.restoreMessageWithId(context, referenceId);
             alternativeParts = true;
         }

         String date = rfc822DateFormat.format(new Date());
         String alternativeBoundary = null;
         String mixedBoundary = null;

         writeHeader(writer, "Date", date); //"6 Jan 09 12:34:55 PST");

         String displayName = acct.mDisplayName;
         if (displayName == null || displayName.length() == 0) {
             writeHeader(writer, "From", acct.mEmailAddress);
         } else
             writeHeader(writer, "From", displayName + " <" + acct.mEmailAddress + '>');

         writeHeader(writer, "Subject", msg.mSubject);
         // TODO Be consistent with SMTP
         writeHeader(writer, "Message-ID", "<" + (uniqueId == null ? "emu" : uniqueId) + '.' +
                 System.currentTimeMillis() + "@AndroidMail.com");

         String to = msg.mTo;
         writeHeaderAddress(writer, "To", to);
         writeHeaderAddress(writer, "Cc", msg.mCc);
         writeHeader(writer, "X-Mailer", "AndroidMail v0.3.x");

         if (mixedParts || alternativeParts)
             writeHeader(writer, "MIME-Version", "1.0");


         if (mixedParts) {
             mixedBoundary = "--=_AndroidMail_mixed_boundary_" + System.nanoTime();
             writeHeader(writer, "Content-Type",  "multipart/mixed; boundary=\""
                     + mixedBoundary + "\"");
             writer.write(CRLF);
         }

         if (alternativeParts) {
             alternativeBoundary = "--=_AndroidMail_alternative_boundary_" + System.nanoTime();
             writeHeader(writer, "Content-Type",  "multipart/alternative; boundary=\""
                     + alternativeBoundary + "\"");
             writer.write(CRLF);
         }

         // Write text part
         if (alternativeParts) {
             writeBoundary(writer, alternativeBoundary, false);
         } else if (mixedParts) {
             writeBoundary(writer, mixedBoundary, false);
         }

         writeHeader(writer, "Content-Type", "text/plain; charset=us-ascii");
         writeHeader(writer, "Content-Transfer-Encoding", "7bit");
         writer.write(CRLF);

         //String text = Messages.getBody(context, msg);
         String text = "Fake body (for now)";
         writeWithCRLF(writer, text);

         if (alternativeParts) {
             writeBoundary(writer, alternativeBoundary, false);
             writeHeader(writer, "Content-Type", "text/html; charset=us-ascii");
             writeHeader(writer, "Content-Transfer-Encoding", "quoted-printable");
             writer.write(CRLF);
             String html = Html.toHtml(new SpannedString(text));
             writeWithCRLF(writer, HTML_DRAFT_HEADER);
             writeWithCRLF(writer, html);
             writeWithCRLF(writer, HTML_REPLY_HEADER);
             if (reply != null) {
                 html = Html.toHtml(new SpannedString(forward ? createForwardIntro(reply) :
                     createReplyIntro(reply)));
                 writeWithCRLF(writer, html);
                 String replyText = "Body of reply text"; //Messages.getBody(context, reply);
                 if (msg.mHtmlInfo == null)
                     replyText = Html.toHtml(new SpannedString(replyText));
                 writeWithCRLF(writer, QuotedPrintable.encode(replyText));
             }
             writeBoundary(writer, alternativeBoundary, true);
         }

         if (mixedParts) {
             for (EmailContent.Attachment att: msg.mAttachments) {
                 writeBoundary(writer, mixedBoundary, false);
                 writeHeader(writer, "Content-Type", att.mMimeType);
                 writeHeader(writer, "Content-Transfer-Encoding", "base64");
                 String name = att.mContentUri;
                 if (name == null || name.length() == 0)
                     name = "picture.jpg";
                 writeHeader(writer, "Content-Disposition", "attachment; filename=\"" + name + "\"");
                 writer.write(CRLF);

                 // Write content of attachment here...
                 String fn = att.mFileName;
                 Uri uri = Uri.parse(fn);

                 InputStream inputStream = null;
                 if (fn.startsWith("/")) {
                     File f = new File(fn);
                     if (f.exists())
                         inputStream = new FileInputStream(f);
                 }
                 else
                     inputStream = context.getContentResolver().openInputStream(uri);

                 if (inputStream != null) {
                     Base64.encodeInputStreamToWriter(inputStream, writer);
                     inputStream.close();
                 }
                 inputStream.close();
                 writer.write(CRLF);
             }
             writeBoundary(writer, mixedBoundary, true);
         }

         writer.flush();
         return true;
     }

     protected static String createReplyIntro (EmailContent.Message msg) {
         StringBuilder sb = new StringBuilder(2048);
         Date d = new Date(msg.mTimeStamp);
         sb.append("\n\n-----\nOn ");
         sb.append(friendlyDateFormat.format(d));
         sb.append(", at ");
         sb.append(friendlyTimeFormat.format(d).toLowerCase());
         sb.append(", ");
         sb.append(msg.mSender);
         sb.append(" wrote: \n\n");
         return sb.toString();
     }

     protected static String createForwardIntro (EmailContent.Message msg) {
         StringBuilder sb = new StringBuilder(2048);
         sb.append("\n\nBegin forwarded message:\n\n");
         sb.append("From: ");
         sb.append(msg.mFrom);
         sb.append("\nTo: ");
         sb.append(msg.mTo);
         sb.append("\nDate: ");
         Date d = new Date(msg.mTimeStamp);
         sb.append(friendlyDateFormat.format(d));
         sb.append(", at ");
         sb.append(friendlyTimeFormat.format(d).toLowerCase());
         sb.append("\nSubject: ");
         sb.append(msg.mSubject);
         sb.append("\n\n");
         return sb.toString();
     }

     private static void writeBoundary (Writer w, String boundary, boolean last) throws IOException {
         w.write("--");
         w.write(boundary);
         if (last)
             w.write("--");
         w.write("\r\n");
     }

     private static void writeWithCRLF (Writer w, String stuff) throws IOException {
         w.write(stuff);
         w.write("\r\n");
     }

     private static void writeHeaderAddress (Writer w, String header, String addressList)
     throws IOException {
         if (addressList != null && addressList.length() > 0)
             writeHeader(w, header, addressList);
     }

     private static void writeHeader (Writer w, String header, String value) throws IOException {
         w.write(header);
         w.write(": ");
         w.write(value);
         w.write("\r\n");
     }

 }
	/*
	* Copyright (C) 2008-2009 Marc Blank
	* Licensed to The Android Open Source Project.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.exchange;

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.StringWriter;
	import java.io.Writer;
	import java.text.SimpleDateFormat;
	import java.util.Date;

	import com.android.email.provider.EmailContent;

	import android.content.ContentUris;
	import android.content.Context;
	import android.database.Cursor;
	import android.net.Uri;
	import android.text.Html;
	import android.text.SpannedString;
	import android.util.Log;

	public class Rfc822Formatter {

	static final SimpleDateFormat rfc822DateFormat = new SimpleDateFormat("dd MMM yy HH:mm:ss Z");
	static final SimpleDateFormat friendlyDateFormat = new SimpleDateFormat("MMM dd, yyyy");
	static final SimpleDateFormat friendlyTimeFormat = new SimpleDateFormat("hh:mm a");

	static public final String HTML_DRAFT_HEADER = "<!--AMDraft-->";
	static public final String HTML_REPLY_HEADER = "<!--AMReply-->";

	static final String CRLF = "\r\n";

	static public String writeEmailAsRfc822String (Context context, EmailContent.Account acct,
	EmailContent.Message msg, String uniqueId) throws IOException {
	StringWriter w = new StringWriter();
	writeEmailAsRfc822(context, acct, msg, w, uniqueId);
	return w.toString();
	}

	static public boolean writeEmailAsRfc822 (Context context, EmailContent.Account acct,
	EmailContent.Message msg, Writer writer, String uniqueId) throws IOException {
	// For now, multi-part alternative means an HTML reply...
	boolean alternativeParts = false;

	Uri u = ContentUris.withAppendedId(EmailContent.Message.CONTENT_URI, msg.mId)
	.buildUpon().appendPath("attachment").build();
	Cursor c = context.getContentResolver().query(u, EmailContent.Attachment.CONTENT_PROJECTION,
	null, null, null);
	try {
	if (c.moveToFirst())
	Log.v("Rfc822", "Has attachments");
	} finally {
	c.close();
	}
	//**PROVIDER
	boolean mixedParts = false; //(!msg.attachments.isEmpty());
	EmailContent.Message reply = null;
	boolean forward = false;

	long referenceId = msg.mReferenceKey;
	if (referenceId != 0) {
	if (referenceId < 0) {
	referenceId = 0 - referenceId;
	forward = true;
	}
	reply = EmailContent.Message.restoreMessageWithId(context, referenceId);
	alternativeParts = true;
	}

	String date = rfc822DateFormat.format(new Date());
	String alternativeBoundary = null;
	String mixedBoundary = null;

	writeHeader(writer, "Date", date); //"6 Jan 09 12:34:55 PST");

	String displayName = acct.mDisplayName;
	if (displayName == null \|\| displayName.length() == 0) {
	writeHeader(writer, "From", acct.mEmailAddress);
	} else
	writeHeader(writer, "From", displayName + " <" + acct.mEmailAddress + '>');

	writeHeader(writer, "Subject", msg.mSubject);
	// TODO Be consistent with SMTP
	writeHeader(writer, "Message-ID", "<" + (uniqueId == null ? "emu" : uniqueId) + '.' +
	System.currentTimeMillis() + "@AndroidMail.com");

	String to = msg.mTo;
	writeHeaderAddress(writer, "To", to);
	writeHeaderAddress(writer, "Cc", msg.mCc);
	writeHeader(writer, "X-Mailer", "AndroidMail v0.3.x");

	if (mixedParts \|\| alternativeParts)
	writeHeader(writer, "MIME-Version", "1.0");


	if (mixedParts) {
	mixedBoundary = "--=_AndroidMail_mixed_boundary_" + System.nanoTime();
	writeHeader(writer, "Content-Type", "multipart/mixed; boundary=\""
	+ mixedBoundary + "\"");
	writer.write(CRLF);
	}

	if (alternativeParts) {
	alternativeBoundary = "--=_AndroidMail_alternative_boundary_" + System.nanoTime();
	writeHeader(writer, "Content-Type", "multipart/alternative; boundary=\""
	+ alternativeBoundary + "\"");
	writer.write(CRLF);
	}

	// Write text part
	if (alternativeParts) {
	writeBoundary(writer, alternativeBoundary, false);
	} else if (mixedParts) {
	writeBoundary(writer, mixedBoundary, false);
	}

	writeHeader(writer, "Content-Type", "text/plain; charset=us-ascii");
	writeHeader(writer, "Content-Transfer-Encoding", "7bit");
	writer.write(CRLF);

	//String text = Messages.getBody(context, msg);
	String text = "Fake body (for now)";
	writeWithCRLF(writer, text);

	if (alternativeParts) {
	writeBoundary(writer, alternativeBoundary, false);
	writeHeader(writer, "Content-Type", "text/html; charset=us-ascii");
	writeHeader(writer, "Content-Transfer-Encoding", "quoted-printable");
	writer.write(CRLF);
	String html = Html.toHtml(new SpannedString(text));
	writeWithCRLF(writer, HTML_DRAFT_HEADER);
	writeWithCRLF(writer, html);
	writeWithCRLF(writer, HTML_REPLY_HEADER);
	if (reply != null) {
	html = Html.toHtml(new SpannedString(forward ? createForwardIntro(reply) :
	createReplyIntro(reply)));
	writeWithCRLF(writer, html);
	String replyText = "Body of reply text"; //Messages.getBody(context, reply);
	if (msg.mHtmlInfo == null)
	replyText = Html.toHtml(new SpannedString(replyText));
	writeWithCRLF(writer, QuotedPrintable.encode(replyText));
	}
	writeBoundary(writer, alternativeBoundary, true);
	}

	if (mixedParts) {
	for (EmailContent.Attachment att: msg.mAttachments) {
	writeBoundary(writer, mixedBoundary, false);
	writeHeader(writer, "Content-Type", att.mMimeType);
	writeHeader(writer, "Content-Transfer-Encoding", "base64");
	String name = att.mContentUri;
	if (name == null \|\| name.length() == 0)
	name = "picture.jpg";
	writeHeader(writer, "Content-Disposition", "attachment; filename=\"" + name + "\"");
	writer.write(CRLF);

	// Write content of attachment here...
	String fn = att.mFileName;
	Uri uri = Uri.parse(fn);

	InputStream inputStream = null;
	if (fn.startsWith("/")) {
	File f = new File(fn);
	if (f.exists())
	inputStream = new FileInputStream(f);
	}
	else
	inputStream = context.getContentResolver().openInputStream(uri);

	if (inputStream != null) {
	Base64.encodeInputStreamToWriter(inputStream, writer);
	inputStream.close();
	}
	inputStream.close();
	writer.write(CRLF);
	}
	writeBoundary(writer, mixedBoundary, true);
	}

	writer.flush();
	return true;
	}

	protected static String createReplyIntro (EmailContent.Message msg) {
	StringBuilder sb = new StringBuilder(2048);
	Date d = new Date(msg.mTimeStamp);
	sb.append("\n\n-----\nOn ");
	sb.append(friendlyDateFormat.format(d));
	sb.append(", at ");
	sb.append(friendlyTimeFormat.format(d).toLowerCase());
	sb.append(", ");
	sb.append(msg.mSender);
	sb.append(" wrote: \n\n");
	return sb.toString();
	}

	protected static String createForwardIntro (EmailContent.Message msg) {
	StringBuilder sb = new StringBuilder(2048);
	sb.append("\n\nBegin forwarded message:\n\n");
	sb.append("From: ");
	sb.append(msg.mFrom);
	sb.append("\nTo: ");
	sb.append(msg.mTo);
	sb.append("\nDate: ");
	Date d = new Date(msg.mTimeStamp);
	sb.append(friendlyDateFormat.format(d));
	sb.append(", at ");
	sb.append(friendlyTimeFormat.format(d).toLowerCase());
	sb.append("\nSubject: ");
	sb.append(msg.mSubject);
	sb.append("\n\n");
	return sb.toString();
	}

	private static void writeBoundary (Writer w, String boundary, boolean last) throws IOException {
	w.write("--");
	w.write(boundary);
	if (last)
	w.write("--");
	w.write("\r\n");
	}

	private static void writeWithCRLF (Writer w, String stuff) throws IOException {
	w.write(stuff);
	w.write("\r\n");
	}

	private static void writeHeaderAddress (Writer w, String header, String addressList)
	throws IOException {
	if (addressList != null && addressList.length() > 0)
	writeHeader(w, header, addressList);
	}

	private static void writeHeader (Writer w, String header, String value) throws IOException {
	w.write(header);
	w.write(": ");
	w.write(value);
	w.write("\r\n");
	}

	}