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Improved html to text conversion

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M66B
2019-01-05 11:17:33 +00:00
parent 426098dd41
commit 8ad66eb162
5 changed files with 55 additions and 24 deletions
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37
app/src/main/java/eu/faircode/email/HtmlHelper.java
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@@ -43,12 +43,17 @@ import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class HtmlHelper {
private static final int PREVIEW_SIZE = 250;
private static Pattern pattern = Pattern.compile("([http|https]+://[\\w\\S(\\.|:|/)]+)");
private static final List<String> heads = Arrays.asList("p", "h1", "h2", "h3", "h4", "h5", "tr");
private static final List<String> tails = Arrays.asList("br", "dd", "dt", "p", "h1", "h2", "h3", "h4", "h5");
static String getBody(String html) {
return Jsoup.parse(html).body().html();
@@ -251,6 +256,36 @@ public class HtmlHelper {
static String getPreview(String body) {
String text = (body == null ? null : Jsoup.parse(body).text());
return (text == null ? null : text.substring(0, Math.min(text.length(), 250)));
return (text == null ? null : text.substring(0, Math.min(text.length(), PREVIEW_SIZE)));
}
static String getText(String html) {
final StringBuilder sb = new StringBuilder();
NodeTraversor.traverse(new NodeVisitor() {
public void head(Node node, int depth) {
if (node instanceof TextNode)
sb.append(((TextNode) node).text());
else {
String name = node.nodeName();
if (name.equals("li"))
sb.append("\n * ");
else if (name.equals("dt"))
sb.append(" ");
else if (heads.contains(name))
sb.append("\n");
}
}
public void tail(Node node, int depth) {
String name = node.nodeName();
if (tails.contains(name))
sb.append("\n");
else if (name.equals("a"))
sb.append(" <").append(node.absUrl("href")).append(">");
}
}, Jsoup.parse(html));
return sb.toString();
}
}