Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.emailcommon.utility; |
| 18 | |
| 19 | import com.android.emailcommon.internet.MimeHeader; |
| 20 | import com.android.emailcommon.internet.MimeUtility; |
| 21 | import com.android.emailcommon.mail.MessagingException; |
| 22 | import com.android.emailcommon.mail.Part; |
| 23 | |
| 24 | import android.text.TextUtils; |
| 25 | |
| 26 | import java.util.ArrayList; |
| 27 | |
| 28 | public class ConversionUtilities { |
| 29 | /** |
Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 30 | * Helper function to append text to a StringBuffer, creating it if necessary. |
| 31 | * Optimization: The majority of the time we are *not* appending - we should have a path |
| 32 | * that deals with single strings. |
| 33 | */ |
| 34 | private static StringBuffer appendTextPart(StringBuffer sb, String newText) { |
| 35 | if (newText == null) { |
| 36 | return sb; |
| 37 | } |
| 38 | else if (sb == null) { |
| 39 | sb = new StringBuffer(newText); |
| 40 | } else { |
| 41 | if (sb.length() > 0) { |
| 42 | sb.append('\n'); |
| 43 | } |
| 44 | sb.append(newText); |
| 45 | } |
| 46 | return sb; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Plain-Old-Data class to return parsed body data from |
| 51 | * {@link ConversionUtilities#parseBodyFields} |
| 52 | */ |
| 53 | public static class BodyFieldData { |
| 54 | public String textContent; |
| 55 | public String htmlContent; |
Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 56 | public String snippet; |
| 57 | public boolean isQuotedReply; |
| 58 | public boolean isQuotedForward; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Parse body text (plain and/or HTML) from MimeMessage to {@link BodyFieldData}. |
| 63 | */ |
| 64 | public static BodyFieldData parseBodyFields(ArrayList<Part> viewables) |
| 65 | throws MessagingException { |
| 66 | final BodyFieldData data = new BodyFieldData(); |
| 67 | StringBuffer sbHtml = null; |
| 68 | StringBuffer sbText = null; |
Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 69 | |
| 70 | for (Part viewable : viewables) { |
| 71 | String text = MimeUtility.getTextFromPart(viewable); |
Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 72 | // Deploy text as marked by the various tags |
| 73 | boolean isHtml = "text/html".equalsIgnoreCase(viewable.getMimeType()); |
| 74 | |
Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 75 | // Most of the time, just process regular body parts |
| 76 | if (isHtml) { |
| 77 | sbHtml = appendTextPart(sbHtml, text); |
| 78 | } else { |
| 79 | sbText = appendTextPart(sbText, text); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | // write the combined data to the body part |
| 84 | if (!TextUtils.isEmpty(sbText)) { |
| 85 | String text = sbText.toString(); |
| 86 | data.textContent = text; |
| 87 | data.snippet = TextUtilities.makeSnippetFromPlainText(text); |
| 88 | } |
| 89 | if (!TextUtils.isEmpty(sbHtml)) { |
| 90 | String text = sbHtml.toString(); |
| 91 | data.htmlContent = text; |
| 92 | if (data.snippet == null) { |
| 93 | data.snippet = TextUtilities.makeSnippetFromHtmlText(text); |
| 94 | } |
| 95 | } |
Andrew Sapperstein | 7922528 | 2013-06-04 15:02:38 -0700 | [diff] [blame] | 96 | return data; |
| 97 | } |
| 98 | } |