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Code Issues Releases Wiki Activity

Move linkification into a separate method. Linkify text in textToHtmlFragment. Fixed Issue 2951.

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This commit is contained in:
Andrew Chen 2011-02-04 18:41:36 +00:00 committed by Jesse Vincent
parent 1b37fc69f6
commit 19d863ee41
1 changed files with 35 additions and 17 deletions
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52
src/com/fsck/k9/helper/HtmlConverter.java
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@ -32,6 +32,9 @@ public class HtmlConverter
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.
@ -158,7 +161,7 @@ public class HtmlConverter
"</body></html>";
}
StringReader reader = new StringReader(text);
StringBuilder buff = new StringBuilder(text.length() + 512);
StringBuilder buff = new StringBuilder(text.length() + TEXT_TO_HTML_EXTRA_BUFFER_LENGTH);
int c;
try
{
@ -192,10 +195,25 @@ public class HtmlConverter
text = text.replaceAll("(?m)^([^\r\n]{4,}[\\s\\w,:;+/])(?:\r\n|\n|\r)(?=[a-z]\\S{0,10}[\\s\\n\\r])","$1 ");
text = text.replaceAll("(?m)(\r\n|\n|\r){4,}","\n\n");
Matcher m = Regex.WEB_URL_PATTERN.matcher(text);
StringBuffer sb = new StringBuffer(text.length() + 512);
StringBuffer sb = new StringBuffer(text.length() + TEXT_TO_HTML_EXTRA_BUFFER_LENGTH);
sb.append("<html><head></head><body>");
sb.append(htmlifyMessageHeader());
linkifyText(text, sb);
sb.append(htmlifyMessageFooter());
sb.append("</body></html>");
text = sb.toString();
return text;
}
/**
* Searches for link-like text in a string and turn it into a link. Append the result to
* <tt>outputBuffer</tt>. <tt>text</tt> is not modified.
* @param text Plain text to be linkified.
* @param outputBuffer Buffer to append linked text to.
*/
private static void linkifyText(final String text, final StringBuffer outputBuffer) {
Matcher m = Regex.WEB_URL_PATTERN.matcher(text);
while (m.find())
{
int start = m.start();
@ -203,25 +221,20 @@ public class HtmlConverter
{
if (m.group().indexOf(':') > 0) // With no URI-schema we may get "http:/" links with the second / missing
{
m.appendReplacement(sb, "<a href=\"$0\">$0</a>");
m.appendReplacement(outputBuffer, "<a href=\"$0\">$0</a>");
}
else
{
m.appendReplacement(sb, "<a href=\"http://$0\">$0</a>");
m.appendReplacement(outputBuffer, "<a href=\"http://$0\">$0</a>");
}
}
else
{
m.appendReplacement(sb, "$0");
m.appendReplacement(outputBuffer, "$0");
}
}
m.appendTail(sb);
sb.append(htmlifyMessageFooter());
sb.append("</body></html>");
text = sb.toString();
return text;
m.appendTail(outputBuffer);
}
/*
@ -260,6 +273,7 @@ public class HtmlConverter
}
return buff.toString();
}
private static String getEmojiForCodePoint(int codePoint)
{
// Derived from http://code.google.com/p/emoji4unicode/source/browse/trunk/data/emoji4unicode.xml
@ -1095,8 +1109,6 @@ public class HtmlConverter
}
}
private static String htmlifyMessageHeader()
{
if (K9.messageViewFixedWidthFont())
@ -1129,10 +1141,16 @@ public class HtmlConverter
public static String textToHtmlFragment(final String text)
{
// Escape the entities and add newlines.
// TODO - Perhaps use LocalStore.htmlifyString?
String result = TextUtils.htmlEncode(text).replace("\n", "<br>\n");
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 &apos;, 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 result.replace("&apos;", "&#39;");
return linkified.toString().replace("\n", "<br>\n").replace("&apos;", "&#39;");
}
}