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Code Issues Releases Wiki Activity

Experiment: remove conditional HTML

This commit is contained in:
M66B 2020-02-02 13:03:06 +01:00
parent 8208709840
commit a812f52e80
1 changed files with 28 additions and 0 deletions
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28
app/src/main/java/eu/faircode/email/HtmlHelper.java
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@ -43,12 +43,14 @@ import androidx.core.util.PatternsCompat;
import androidx.preference.PreferenceManager;
import org.jsoup.nodes.Attribute;
import org.jsoup.nodes.Comment;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.nodes.Node;
import org.jsoup.nodes.TextNode;
import org.jsoup.safety.Cleaner;
import org.jsoup.safety.Whitelist;
import org.jsoup.select.NodeFilter;
import org.jsoup.select.NodeTraversor;
import org.jsoup.select.NodeVisitor;
@ -257,6 +259,32 @@ public class HtmlHelper {
Document parsed = JsoupEx.parse(html);
// <!--[if ...]><!--> ... <!--<![endif]-->
if (!display_hidden && BuildConfig.DEBUG)
parsed.filter(new NodeFilter() {
private boolean remove = false;
@Override
public FilterResult head(Node node, int depth) {
if (node instanceof Comment) {
String data = ((Comment) node).getData().trim();
if (data.startsWith("[if") && !data.endsWith("endif]")) {
remove = true;
return FilterResult.REMOVE;
} else if (remove && data.endsWith("endif]")) {
remove = false;
return FilterResult.REMOVE;
}
}
return (remove ? FilterResult.REMOVE : FilterResult.CONTINUE);
}
@Override
public FilterResult tail(Node node, int depth) {
return FilterResult.CONTINUE;
}
});
// <html xmlns:v="urn:schemas-microsoft-com:vml"
// xmlns:o="urn:schemas-microsoft-com:office:office"
// xmlns:w="urn:schemas-microsoft-com:office:word"