package com.fsck.k9.helper; import android.text.*; import android.text.Html.TagHandler; import android.util.Log; import com.fsck.k9.K9; import org.xml.sax.XMLReader; import java.io.IOException; import java.io.StringReader; import java.util.Collections; import java.util.HashSet; import java.util.Locale; import java.util.Set; import java.util.regex.Matcher; /** * Contains common routines to convert html to text and vice versa. */ public class HtmlConverter { /** * When generating previews, Spannable objects that can't be converted into a String are * represented as 0xfffc. When displayed, these show up as undisplayed squares. These constants * define the object character and the replacement character. */ private static final char PREVIEW_OBJECT_CHARACTER = (char)0xfffc; private static final char PREVIEW_OBJECT_REPLACEMENT = (char)0x20; // space /** * toHtml() converts non-breaking spaces into the UTF-8 non-breaking space, which doesn't get * rendered properly in some clients. Replace it with a simple space. */ private static final char NBSP_CHARACTER = (char)0x00a0; // utf-8 non-breaking space private static final char NBSP_REPLACEMENT = (char)0x20; // space // Number of extra bytes to allocate in a string buffer for htmlification. private static final int TEXT_TO_HTML_EXTRA_BUFFER_LENGTH = 512; /** * Convert an HTML string to a plain text string. * @param html HTML string to convert. * @return Plain text result. */ public static String htmlToText(final String html) { return Html.fromHtml(html, null, new HtmlToTextTagHandler()).toString() .replace(PREVIEW_OBJECT_CHARACTER, PREVIEW_OBJECT_REPLACEMENT) .replace(NBSP_CHARACTER, NBSP_REPLACEMENT); } /** * Custom tag handler to use when converting HTML messages to text. It currently handles text * representations of HTML tags that Android's built-in parser doesn't understand and hides code * contained in STYLE and SCRIPT blocks. */ private static class HtmlToTextTagHandler implements Html.TagHandler { // List of tags whose content should be ignored. private static final Set TAGS_WITH_IGNORED_CONTENT; static { Set set = new HashSet(); set.add("style"); set.add("script"); set.add("title"); set.add("!"); // comments TAGS_WITH_IGNORED_CONTENT = Collections.unmodifiableSet(set); } @Override public void handleTag(boolean opening, String tag, Editable output, XMLReader xmlReader) { tag = tag.toLowerCase(Locale.US); if (tag.equals("hr") && opening) { // In the case of an
, replace it with a bunch of underscores. This is roughly // the behaviour of Outlook in Rich Text mode. output.append("_____________________________________________\r\n"); } else if (TAGS_WITH_IGNORED_CONTENT.contains(tag)) { handleIgnoredTag(opening, output); } } private static final String IGNORED_ANNOTATION_KEY = "K9_ANNOTATION"; private static final String IGNORED_ANNOTATION_VALUE = "hiddenSpan"; /** * When we come upon an ignored tag, we mark it with an Annotation object with a specific key * and value as above. We don't really need to be checking these values since Html.fromHtml() * doesn't use Annotation spans, but we should do it now to be safe in case they do start using * it in the future. * @param opening If this is an opening tag or not. * @param output Spannable string that we're working with. */ private void handleIgnoredTag(boolean opening, Editable output) { int len = output.length(); if (opening) { output.setSpan(new Annotation(IGNORED_ANNOTATION_KEY, IGNORED_ANNOTATION_VALUE), len, len, Spannable.SPAN_MARK_MARK); } else { Object start = getOpeningAnnotation(output); if (start != null) { int where = output.getSpanStart(start); // Remove the temporary Annotation span. output.removeSpan(start); // Delete everything between the start of the Annotation and the end of the string // (what we've generated so far). output.delete(where, len); } } } /** * Fetch the matching opening Annotation object and verify that it's the one added by K9. * @param output Spannable string we're working with. * @return Starting Annotation object. */ private Object getOpeningAnnotation(Editable output) { Object[] objs = output.getSpans(0, output.length(), Annotation.class); for (int i = objs.length - 1; i >= 0; i--) { Annotation span = (Annotation) objs[i]; if (output.getSpanFlags(objs[i]) == Spannable.SPAN_MARK_MARK && span.getKey().equals(IGNORED_ANNOTATION_KEY) && span.getValue().equals(IGNORED_ANNOTATION_VALUE)) { return objs[i]; } } return null; } } private static final int MAX_SMART_HTMLIFY_MESSAGE_LENGTH = 1024 * 256 ; /** * Naively convert a text string into an HTML document. * *

* This method avoids using regular expressions on the entire message body to save memory. *

*

* No HTML headers or footers are added to the result. Headers and footers * are added at display time in * {@link com.fsck.k9.view#MessageWebView.setText(String) MessageWebView.setText()} *

* * @param text * Plain text string. * @return HTML string. */ private static String simpleTextToHtml(String text) { // Encode HTML entities to make sure we don't display something evil. text = TextUtils.htmlEncode(text); StringReader reader = new StringReader(text); StringBuilder buff = new StringBuilder(text.length() + TEXT_TO_HTML_EXTRA_BUFFER_LENGTH); buff.append(htmlifyMessageHeader()); int c; try { while ((c = reader.read()) != -1) { switch (c) { case '\n': // pine treats
as two newlines, but
as one newline. Use
so our messages aren't // doublespaced. buff.append("
"); break; case '\r': break; default: buff.append((char)c); }//switch } } catch (IOException e) { //Should never happen Log.e(K9.LOG_TAG, "Could not read string to convert text to HTML:", e); } buff.append(htmlifyMessageFooter()); return buff.toString(); } private static final String HTML_BLOCKQUOTE_COLOR_TOKEN = "$$COLOR$$"; private static final String HTML_BLOCKQUOTE_START = "
"; private static final String HTML_BLOCKQUOTE_END = "
"; private static final String HTML_NEWLINE = "
"; /** * Convert a text string into an HTML document. * *

* Attempts to do smart replacement for large documents to prevent OOM * errors. *

* No HTML headers or footers are added to the result. Headers and footers * are added at display time in * {@link com.fsck.k9.view#MessageWebView.setText(String) MessageWebView.setText()} *

*

* To convert to a fragment, use {@link #textToHtmlFragment(String)} . *

* * @param text * Plain text string. * @return HTML string. */ public static String textToHtml(String text) { // Our HTMLification code is somewhat memory intensive // and was causing lots of OOM errors on the market // if the message is big and plain text, just do // a trivial htmlification if (text.length() > MAX_SMART_HTMLIFY_MESSAGE_LENGTH) { return simpleTextToHtml(text); } StringReader reader = new StringReader(text); StringBuilder buff = new StringBuilder(text.length() + TEXT_TO_HTML_EXTRA_BUFFER_LENGTH); boolean isStartOfLine = true; // Are we currently at the start of a line? int spaces = 0; int quoteDepth = 0; // Number of DIVs deep we are. int quotesThisLine = 0; // How deep we should be quoting for this line. try { int c; while ((c = reader.read()) != -1) { if (isStartOfLine) { switch (c) { case ' ': spaces++; break; case '>': quotesThisLine++; spaces = 0; break; case '\n': appendbq(buff, quotesThisLine, quoteDepth); quoteDepth = quotesThisLine; appendsp(buff, spaces); spaces = 0; appendchar(buff, c); isStartOfLine = true; quotesThisLine = 0; break; default: isStartOfLine = false; appendbq(buff, quotesThisLine, quoteDepth); quoteDepth = quotesThisLine; appendsp(buff, spaces); spaces = 0; appendchar(buff, c); isStartOfLine = false; break; } } else { appendchar(buff, c); if (c == '\n') { isStartOfLine = true; quotesThisLine = 0; } } } } catch (IOException e) { //Should never happen Log.e(K9.LOG_TAG, "Could not read string to convert text to HTML:", e); } // Close off any quotes we may have opened. if (quoteDepth > 0) { for (int i = quoteDepth; i > 0; i--) { buff.append(HTML_BLOCKQUOTE_END); } } text = buff.toString(); // Make newlines at the end of blockquotes nicer by putting newlines beyond the first one outside of the // blockquote. text = text.replaceAll( "\\Q" + HTML_NEWLINE + "\\E((\\Q" + HTML_NEWLINE + "\\E)+?)\\Q" + HTML_BLOCKQUOTE_END + "\\E", HTML_BLOCKQUOTE_END + "$1" ); // Replace lines of -,= or _ with horizontal rules text = text.replaceAll("\\s*([-=_]{30,}+)\\s*", "
"); StringBuffer sb = new StringBuffer(text.length() + TEXT_TO_HTML_EXTRA_BUFFER_LENGTH); sb.append(htmlifyMessageHeader()); linkifyText(text, sb); sb.append(htmlifyMessageFooter()); text = sb.toString(); // Above we replaced > with , now make it > text = text.replaceAll("", ">"); return text; } private static void appendchar(StringBuilder buff, int c) { switch (c) { case '&': buff.append("&"); break; case '<': buff.append("<"); break; case '>': // We use a token here which can't occur in htmlified text because > is valid // within links (where > is not), and linkifying links will include it if we // do it here. We'll make another pass and change this back to > after // the linkification is done. buff.append(""); break; case '\r': break; case '\n': // pine treats
as two newlines, but
as one newline. Use
so our messages aren't // doublespaced. buff.append(HTML_NEWLINE); break; default: buff.append((char)c); break; } } private static void appendsp(StringBuilder buff, int spaces) { while (spaces > 0) { buff.append(' '); spaces--; } } private static void appendbq(StringBuilder buff, int quotesThisLine, int quoteDepth) { // Add/remove blockquotes by comparing this line's quotes to the previous line's quotes. if (quotesThisLine > quoteDepth) { for (int i = quoteDepth; i < quotesThisLine; i++) { buff.append(HTML_BLOCKQUOTE_START.replace(HTML_BLOCKQUOTE_COLOR_TOKEN, getQuoteColor(i + 1))); } } else if (quotesThisLine < quoteDepth) { for (int i = quoteDepth; i > quotesThisLine; i--) { buff.append(HTML_BLOCKQUOTE_END); } } } protected static final String QUOTE_COLOR_DEFAULT = "#ccc"; protected static final String QUOTE_COLOR_LEVEL_1 = "#729fcf"; protected static final String QUOTE_COLOR_LEVEL_2 = "#ad7fa8"; protected static final String QUOTE_COLOR_LEVEL_3 = "#8ae234"; protected static final String QUOTE_COLOR_LEVEL_4 = "#fcaf3e"; protected static final String QUOTE_COLOR_LEVEL_5 = "#e9b96e"; private static final String K9MAIL_CSS_CLASS = "k9mail"; /** * Return an HTML hex color string for a given quote level. * @param level Quote level * @return Hex color string with prepended #. */ protected static String getQuoteColor(final int level) { switch(level) { case 1: return QUOTE_COLOR_LEVEL_1; case 2: return QUOTE_COLOR_LEVEL_2; case 3: return QUOTE_COLOR_LEVEL_3; case 4: return QUOTE_COLOR_LEVEL_4; case 5: return QUOTE_COLOR_LEVEL_5; default: return QUOTE_COLOR_DEFAULT; } } /** * Searches for link-like text in a string and turn it into a link. Append the result to * outputBuffer. text is not modified. * @param text Plain text to be linkified. * @param outputBuffer Buffer to append linked text to. */ protected static void linkifyText(final String text, final StringBuffer outputBuffer) { String prepared = text.replaceAll(Regex.BITCOIN_URI_PATTERN, "$0"); Matcher m = Regex.WEB_URL_PATTERN.matcher(prepared); while (m.find()) { int start = m.start(); if (start == 0 || (start != 0 && prepared.charAt(start - 1) != '@')) { if (m.group().indexOf(':') > 0) { // With no URI-schema we may get "http:/" links with the second / missing m.appendReplacement(outputBuffer, "$0"); } else { m.appendReplacement(outputBuffer, "$0"); } } else { m.appendReplacement(outputBuffer, "$0"); } } m.appendTail(outputBuffer); } /* * Lightweight method to check whether the message contains emoji or not. * Useful to avoid calling the heavyweight convertEmoji2Img method. * We don't use String.codePointAt here for performance reasons. */ private static boolean hasEmoji(String html) { for (int i = 0; i < html.length(); ++i) { char c = html.charAt(i); if (c >= 0xDBB8 && c < 0xDBBC) return true; } return false; } public static String convertEmoji2Img(String html) { if (!hasEmoji(html)) { return html; } StringBuilder buff = new StringBuilder(html.length() + 512); for (int i = 0; i < html.length(); i = html.offsetByCodePoints(i, 1)) { int codePoint = html.codePointAt(i); String emoji = getEmojiForCodePoint(codePoint); if (emoji != null) buff.append("\"").append(emoji).append("\""); else buff.appendCodePoint(codePoint); } return buff.toString(); } private static String getEmojiForCodePoint(int codePoint) { // Derived from http://code.google.com/p/emoji4unicode/source/browse/trunk/data/emoji4unicode.xml // XXX: This doesn't cover all the characters. More emoticons are wanted. switch (codePoint) { case 0xFE000: return "sun"; case 0xFE001: return "cloud"; case 0xFE002: return "rain"; case 0xFE003: return "snow"; case 0xFE004: return "thunder"; case 0xFE005: return "typhoon"; case 0xFE006: return "mist"; case 0xFE007: return "sprinkle"; case 0xFE008: return "night"; case 0xFE009: return "sun"; case 0xFE00A: return "sun"; case 0xFE00C: return "sun"; case 0xFE010: return "night"; case 0xFE011: return "newmoon"; case 0xFE012: return "moon1"; case 0xFE013: return "moon2"; case 0xFE014: return "moon3"; case 0xFE015: return "fullmoon"; case 0xFE016: return "moon2"; case 0xFE018: return "soon"; case 0xFE019: return "on"; case 0xFE01A: return "end"; case 0xFE01B: return "sandclock"; case 0xFE01C: return "sandclock"; case 0xFE01D: return "watch"; case 0xFE01E: return "clock"; case 0xFE01F: return "clock"; case 0xFE020: return "clock"; case 0xFE021: return "clock"; case 0xFE022: return "clock"; case 0xFE023: return "clock"; case 0xFE024: return "clock"; case 0xFE025: return "clock"; case 0xFE026: return "clock"; case 0xFE027: return "clock"; case 0xFE028: return "clock"; case 0xFE029: return "clock"; case 0xFE02A: return "clock"; case 0xFE02B: return "aries"; case 0xFE02C: return "taurus"; case 0xFE02D: return "gemini"; case 0xFE02E: return "cancer"; case 0xFE02F: return "leo"; case 0xFE030: return "virgo"; case 0xFE031: return "libra"; case 0xFE032: return "scorpius"; case 0xFE033: return "sagittarius"; case 0xFE034: return "capricornus"; case 0xFE035: return "aquarius"; case 0xFE036: return "pisces"; case 0xFE038: return "wave"; case 0xFE03B: return "night"; case 0xFE03C: return "clover"; case 0xFE03D: return "tulip"; case 0xFE03E: return "bud"; case 0xFE03F: return "maple"; case 0xFE040: return "cherryblossom"; case 0xFE042: return "maple"; case 0xFE04E: return "clover"; case 0xFE04F: return "cherry"; case 0xFE050: return "banana"; case 0xFE051: return "apple"; case 0xFE05B: return "apple"; case 0xFE190: return "eye"; case 0xFE191: return "ear"; case 0xFE193: return "kissmark"; case 0xFE194: return "bleah"; case 0xFE195: return "rouge"; case 0xFE198: return "hairsalon"; case 0xFE19A: return "shadow"; case 0xFE19B: return "happy01"; case 0xFE19C: return "happy01"; case 0xFE19D: return "happy01"; case 0xFE19E: return "happy01"; case 0xFE1B7: return "dog"; case 0xFE1B8: return "cat"; case 0xFE1B9: return "snail"; case 0xFE1BA: return "chick"; case 0xFE1BB: return "chick"; case 0xFE1BC: return "penguin"; case 0xFE1BD: return "fish"; case 0xFE1BE: return "horse"; case 0xFE1BF: return "pig"; case 0xFE1C8: return "chick"; case 0xFE1C9: return "fish"; case 0xFE1CF: return "aries"; case 0xFE1D0: return "dog"; case 0xFE1D8: return "dog"; case 0xFE1D9: return "fish"; case 0xFE1DB: return "foot"; case 0xFE1DD: return "chick"; case 0xFE1E0: return "pig"; case 0xFE1E3: return "cancer"; case 0xFE320: return "angry"; case 0xFE321: return "sad"; case 0xFE322: return "wobbly"; case 0xFE323: return "despair"; case 0xFE324: return "wobbly"; case 0xFE325: return "coldsweats02"; case 0xFE326: return "gawk"; case 0xFE327: return "lovely"; case 0xFE328: return "smile"; case 0xFE329: return "bleah"; case 0xFE32A: return "bleah"; case 0xFE32B: return "delicious"; case 0xFE32C: return "lovely"; case 0xFE32D: return "lovely"; case 0xFE32F: return "happy02"; case 0xFE330: return "happy01"; case 0xFE331: return "coldsweats01"; case 0xFE332: return "happy02"; case 0xFE333: return "smile"; case 0xFE334: return "happy02"; case 0xFE335: return "delicious"; case 0xFE336: return "happy01"; case 0xFE337: return "happy01"; case 0xFE338: return "coldsweats01"; case 0xFE339: return "weep"; case 0xFE33A: return "crying"; case 0xFE33B: return "shock"; case 0xFE33C: return "bearing"; case 0xFE33D: return "pout"; case 0xFE33E: return "confident"; case 0xFE33F: return "sad"; case 0xFE340: return "think"; case 0xFE341: return "shock"; case 0xFE342: return "sleepy"; case 0xFE343: return "catface"; case 0xFE344: return "coldsweats02"; case 0xFE345: return "coldsweats02"; case 0xFE346: return "bearing"; case 0xFE347: return "wink"; case 0xFE348: return "happy01"; case 0xFE349: return "smile"; case 0xFE34A: return "happy02"; case 0xFE34B: return "lovely"; case 0xFE34C: return "lovely"; case 0xFE34D: return "weep"; case 0xFE34E: return "pout"; case 0xFE34F: return "smile"; case 0xFE350: return "sad"; case 0xFE351: return "ng"; case 0xFE352: return "ok"; case 0xFE357: return "paper"; case 0xFE359: return "sad"; case 0xFE35A: return "angry"; case 0xFE4B0: return "house"; case 0xFE4B1: return "house"; case 0xFE4B2: return "building"; case 0xFE4B3: return "postoffice"; case 0xFE4B4: return "hospital"; case 0xFE4B5: return "bank"; case 0xFE4B6: return "atm"; case 0xFE4B7: return "hotel"; case 0xFE4B9: return "24hours"; case 0xFE4BA: return "school"; case 0xFE4C1: return "ship"; case 0xFE4C2: return "bottle"; case 0xFE4C3: return "fuji"; case 0xFE4C9: return "wrench"; case 0xFE4CC: return "shoe"; case 0xFE4CD: return "shoe"; case 0xFE4CE: return "eyeglass"; case 0xFE4CF: return "t-shirt"; case 0xFE4D0: return "denim"; case 0xFE4D1: return "crown"; case 0xFE4D2: return "crown"; case 0xFE4D6: return "boutique"; case 0xFE4D7: return "boutique"; case 0xFE4DB: return "t-shirt"; case 0xFE4DC: return "moneybag"; case 0xFE4DD: return "dollar"; case 0xFE4E0: return "dollar"; case 0xFE4E2: return "yen"; case 0xFE4E3: return "dollar"; case 0xFE4EF: return "camera"; case 0xFE4F0: return "bag"; case 0xFE4F1: return "pouch"; case 0xFE4F2: return "bell"; case 0xFE4F3: return "door"; case 0xFE4F9: return "movie"; case 0xFE4FB: return "flair"; case 0xFE4FD: return "sign05"; case 0xFE4FF: return "book"; case 0xFE500: return "book"; case 0xFE501: return "book"; case 0xFE502: return "book"; case 0xFE503: return "book"; case 0xFE505: return "spa"; case 0xFE506: return "toilet"; case 0xFE507: return "toilet"; case 0xFE508: return "toilet"; case 0xFE50F: return "ribbon"; case 0xFE510: return "present"; case 0xFE511: return "birthday"; case 0xFE512: return "xmas"; case 0xFE522: return "pocketbell"; case 0xFE523: return "telephone"; case 0xFE524: return "telephone"; case 0xFE525: return "mobilephone"; case 0xFE526: return "phoneto"; case 0xFE527: return "memo"; case 0xFE528: return "faxto"; case 0xFE529: return "mail"; case 0xFE52A: return "mailto"; case 0xFE52B: return "mailto"; case 0xFE52C: return "postoffice"; case 0xFE52D: return "postoffice"; case 0xFE52E: return "postoffice"; case 0xFE535: return "present"; case 0xFE536: return "pen"; case 0xFE537: return "chair"; case 0xFE538: return "pc"; case 0xFE539: return "pencil"; case 0xFE53A: return "clip"; case 0xFE53B: return "bag"; case 0xFE53E: return "hairsalon"; case 0xFE540: return "memo"; case 0xFE541: return "memo"; case 0xFE545: return "book"; case 0xFE546: return "book"; case 0xFE547: return "book"; case 0xFE548: return "memo"; case 0xFE54D: return "book"; case 0xFE54F: return "book"; case 0xFE552: return "memo"; case 0xFE553: return "foot"; case 0xFE7D0: return "sports"; case 0xFE7D1: return "baseball"; case 0xFE7D2: return "golf"; case 0xFE7D3: return "tennis"; case 0xFE7D4: return "soccer"; case 0xFE7D5: return "ski"; case 0xFE7D6: return "basketball"; case 0xFE7D7: return "motorsports"; case 0xFE7D8: return "snowboard"; case 0xFE7D9: return "run"; case 0xFE7DA: return "snowboard"; case 0xFE7DC: return "horse"; case 0xFE7DF: return "train"; case 0xFE7E0: return "subway"; case 0xFE7E1: return "subway"; case 0xFE7E2: return "bullettrain"; case 0xFE7E3: return "bullettrain"; case 0xFE7E4: return "car"; case 0xFE7E5: return "rvcar"; case 0xFE7E6: return "bus"; case 0xFE7E8: return "ship"; case 0xFE7E9: return "airplane"; case 0xFE7EA: return "yacht"; case 0xFE7EB: return "bicycle"; case 0xFE7EE: return "yacht"; case 0xFE7EF: return "car"; case 0xFE7F0: return "run"; case 0xFE7F5: return "gasstation"; case 0xFE7F6: return "parking"; case 0xFE7F7: return "signaler"; case 0xFE7FA: return "spa"; case 0xFE7FC: return "carouselpony"; case 0xFE7FF: return "fish"; case 0xFE800: return "karaoke"; case 0xFE801: return "movie"; case 0xFE802: return "movie"; case 0xFE803: return "music"; case 0xFE804: return "art"; case 0xFE805: return "drama"; case 0xFE806: return "event"; case 0xFE807: return "ticket"; case 0xFE808: return "slate"; case 0xFE809: return "drama"; case 0xFE80A: return "game"; case 0xFE813: return "note"; case 0xFE814: return "notes"; case 0xFE81A: return "notes"; case 0xFE81C: return "tv"; case 0xFE81D: return "cd"; case 0xFE81E: return "cd"; case 0xFE823: return "kissmark"; case 0xFE824: return "loveletter"; case 0xFE825: return "ring"; case 0xFE826: return "ring"; case 0xFE827: return "kissmark"; case 0xFE829: return "heart02"; case 0xFE82B: return "freedial"; case 0xFE82C: return "sharp"; case 0xFE82D: return "mobaq"; case 0xFE82E: return "one"; case 0xFE82F: return "two"; case 0xFE830: return "three"; case 0xFE831: return "four"; case 0xFE832: return "five"; case 0xFE833: return "six"; case 0xFE834: return "seven"; case 0xFE835: return "eight"; case 0xFE836: return "nine"; case 0xFE837: return "zero"; case 0xFE960: return "fastfood"; case 0xFE961: return "riceball"; case 0xFE962: return "cake"; case 0xFE963: return "noodle"; case 0xFE964: return "bread"; case 0xFE96A: return "noodle"; case 0xFE973: return "typhoon"; case 0xFE980: return "restaurant"; case 0xFE981: return "cafe"; case 0xFE982: return "bar"; case 0xFE983: return "beer"; case 0xFE984: return "japanesetea"; case 0xFE985: return "bottle"; case 0xFE986: return "wine"; case 0xFE987: return "beer"; case 0xFE988: return "bar"; case 0xFEAF0: return "upwardright"; case 0xFEAF1: return "downwardright"; case 0xFEAF2: return "upwardleft"; case 0xFEAF3: return "downwardleft"; case 0xFEAF4: return "up"; case 0xFEAF5: return "down"; case 0xFEAF6: return "leftright"; case 0xFEAF7: return "updown"; case 0xFEB04: return "sign01"; case 0xFEB05: return "sign02"; case 0xFEB06: return "sign03"; case 0xFEB07: return "sign04"; case 0xFEB08: return "sign05"; case 0xFEB0B: return "sign01"; case 0xFEB0C: return "heart01"; case 0xFEB0D: return "heart02"; case 0xFEB0E: return "heart03"; case 0xFEB0F: return "heart04"; case 0xFEB10: return "heart01"; case 0xFEB11: return "heart02"; case 0xFEB12: return "heart01"; case 0xFEB13: return "heart01"; case 0xFEB14: return "heart01"; case 0xFEB15: return "heart01"; case 0xFEB16: return "heart01"; case 0xFEB17: return "heart01"; case 0xFEB18: return "heart02"; case 0xFEB19: return "cute"; case 0xFEB1A: return "heart"; case 0xFEB1B: return "spade"; case 0xFEB1C: return "diamond"; case 0xFEB1D: return "club"; case 0xFEB1E: return "smoking"; case 0xFEB1F: return "nosmoking"; case 0xFEB20: return "wheelchair"; case 0xFEB21: return "free"; case 0xFEB22: return "flag"; case 0xFEB23: return "danger"; case 0xFEB26: return "ng"; case 0xFEB27: return "ok"; case 0xFEB28: return "ng"; case 0xFEB29: return "copyright"; case 0xFEB2A: return "tm"; case 0xFEB2B: return "secret"; case 0xFEB2C: return "recycle"; case 0xFEB2D: return "r-mark"; case 0xFEB2E: return "ban"; case 0xFEB2F: return "empty"; case 0xFEB30: return "pass"; case 0xFEB31: return "full"; case 0xFEB36: return "new"; case 0xFEB44: return "fullmoon"; case 0xFEB48: return "ban"; case 0xFEB55: return "cute"; case 0xFEB56: return "flair"; case 0xFEB57: return "annoy"; case 0xFEB58: return "bomb"; case 0xFEB59: return "sleepy"; case 0xFEB5A: return "impact"; case 0xFEB5B: return "sweat01"; case 0xFEB5C: return "sweat02"; case 0xFEB5D: return "dash"; case 0xFEB5F: return "sad"; case 0xFEB60: return "shine"; case 0xFEB61: return "cute"; case 0xFEB62: return "cute"; case 0xFEB63: return "newmoon"; case 0xFEB64: return "newmoon"; case 0xFEB65: return "newmoon"; case 0xFEB66: return "newmoon"; case 0xFEB67: return "newmoon"; case 0xFEB77: return "shine"; case 0xFEB81: return "id"; case 0xFEB82: return "key"; case 0xFEB83: return "enter"; case 0xFEB84: return "clear"; case 0xFEB85: return "search"; case 0xFEB86: return "key"; case 0xFEB87: return "key"; case 0xFEB8A: return "key"; case 0xFEB8D: return "search"; case 0xFEB90: return "key"; case 0xFEB91: return "recycle"; case 0xFEB92: return "mail"; case 0xFEB93: return "rock"; case 0xFEB94: return "scissors"; case 0xFEB95: return "paper"; case 0xFEB96: return "punch"; case 0xFEB97: return "good"; case 0xFEB9D: return "paper"; case 0xFEB9F: return "ok"; case 0xFEBA0: return "down"; case 0xFEBA1: return "paper"; case 0xFEE10: return "info01"; case 0xFEE11: return "info02"; case 0xFEE12: return "by-d"; case 0xFEE13: return "d-point"; case 0xFEE14: return "appli01"; case 0xFEE15: return "appli02"; case 0xFEE1C: return "movie"; default: return null; } } private static String htmlifyMessageHeader() { return "
";
    }

    private static String htmlifyMessageFooter() {
        return "
"; } /** * Dynamically generate a CSS style for {@code
} elements.
     *
     *  

* The style incorporates the user's current preference * setting for the font family used for plain text messages. *

* * @return * A {@code "; } /** * Convert a plain text string into an HTML fragment. * @param text Plain text. * @return HTML fragment. */ public static String textToHtmlFragment(final String text) { // Escape the entities and add newlines. String htmlified = TextUtils.htmlEncode(text); // Linkify the message. StringBuffer linkified = new StringBuffer(htmlified.length() + TEXT_TO_HTML_EXTRA_BUFFER_LENGTH); linkifyText(htmlified, linkified); // Add newlines and unescaping. // // For some reason, TextUtils.htmlEncode escapes ' into ', which is technically part of the XHTML 1.0 // standard, but Gmail doesn't recognize it as an HTML entity. We unescape that here. return linkified.toString().replaceAll("\r?\n", "
\r\n").replace("'", "'"); } /** * Convert HTML to a {@link Spanned} that can be used in a {@link android.widget.TextView}. * * @param html * The HTML fragment to be converted. * * @return A {@link Spanned} containing the text in {@code html} formatted using spans. */ public static Spanned htmlToSpanned(String html) { return Html.fromHtml(html, null, new ListTagHandler()); } /** * {@link TagHandler} that supports unordered lists. * * @see HtmlConverter#htmlToSpanned(String) */ public static class ListTagHandler implements TagHandler { @Override public void handleTag(boolean opening, String tag, Editable output, XMLReader xmlReader) { if (tag.equals("ul")) { if (opening) { char lastChar = 0; if (output.length() > 0) { lastChar = output.charAt(output.length() - 1); } if (lastChar != '\n') { output.append("\r\n"); } } else { output.append("\r\n"); } } if (tag.equals("li")) { if (opening) { output.append("\t• "); } else { output.append("\r\n"); } } } } }