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1 package nabble.model;
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2
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3 import java.net.URL;
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4 import java.net.MalformedURLException;
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5 import java.util.Iterator;
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6 import java.util.regex.Matcher;
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7 import fschmidt.html.Html;
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8 import fschmidt.html.HtmlTag;
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9 import fschmidt.html.HtmlTextContainer;
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10 import fschmidt.util.mail.MailAddress;
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11
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12
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13 public final class MessageUtils {
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14 private MessageUtils() {} // never
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15
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16 public static String getTextWithoutQuotes(String msg) {
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17 Html list = newHtml(msg);
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18 removeQuotes(list);
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19 return htmlToText(list);
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20 }
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21
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22 static Html newHtml(String msg) {
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23 Html html = new Html();
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24 html.containerTags().add("raw");
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25 html.parse(msg);
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26 return html;
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27 }
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28
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29 private static void removeQuotes(Html list) {
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30 int quoteDepth = 0;
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31 for( Iterator i=list.iterator(); i.hasNext(); ) {
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32 Object next = i.next();
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33 boolean remove = quoteDepth > 0;
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34 if (next instanceof HtmlTag) {
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35 String tagName = ((HtmlTag)next).getName().toLowerCase();
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36 if( tagName.equals("quote") ) {
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37 quoteDepth++;
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38 remove = true;
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39 } else if( tagName.equals("/quote") && quoteDepth > 0 ) {
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40 quoteDepth--;
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41 }
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42 }
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43 if( remove )
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44 i.remove();
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45 }
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46 }
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47
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48 static String htmlToText(Html html) {
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49 StringBuilder buf = new StringBuilder();
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50 for( Iterator i=html.iterator(); i.hasNext(); ) {
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51 Object next = i.next();
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52 if( next instanceof String ) {
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53 buf.append(next);
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54 } else if (next instanceof HtmlTag) {
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55 boolean isSeparator = Message.htmlSeparators.containsKey(((HtmlTag)next).getName().toLowerCase());
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56 if (isSeparator && buf.length()>0 && !Character.isWhitespace(buf.charAt(buf.length()-1)))
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57 buf.append(' ');
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58 }
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59 }
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60 return buf.toString();
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61 }
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62
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63 public static String htmlToSearchText(Html html) {
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64 StringBuilder buf = new StringBuilder();
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65 for( Iterator i=html.iterator(); i.hasNext(); ) {
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66 Object next = i.next();
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67 if( next instanceof String ) {
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68 buf.append(next);
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69 } else if (next instanceof HtmlTag) {
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70 HtmlTag tag = (HtmlTag)next;
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71 String name = tag.getName().toLowerCase();
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72 if( name.equals("iframe") ) {
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73 buf.append(" html_iframe");
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74 } else if( name.equals("img") ) {
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75 String src = HtmlTag.unquote(tag.getAttributeValue("src"));
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76 if( src != null )
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77 buf.append(" html_img_").append( src.substring(src.lastIndexOf('.')+1) );
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78 } else if( name.equals("a") ) {
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79 String href = HtmlTag.unquote(tag.getAttributeValue("href"));
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80 if( href != null ) {
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81 buf.append(" html_a");
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82 try {
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83 String domain = new URL(href).getHost();
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84 buf.append(" link_").append(domain);
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85 } catch(MalformedURLException e) {} // ignore
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86 }
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87 }
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88 buf.append(' ');
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89 }
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90 }
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91 return buf.toString();
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92 }
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93
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94 public static String hideAllEmails(String txt) {
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95 if (txt==null) return null;
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96 Matcher m = MailAddress.EMAIL_PATTERN.matcher(txt);
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97 StringBuffer buf = new StringBuffer();
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98 while (m.find()) {
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99 m.appendReplacement(buf, "$1@...");
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100 }
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101 m.appendTail(buf);
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102 return buf.toString();
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103 }
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104
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105 }
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