Heighlight text improvements

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -2960,78 +2960,79 @@ public class HtmlHelper {
         return ssb;
     }
 
-    static Document highlightSearched(Context context, Document document, String query) {
-        int color = Helper.resolveColor(context, R.attr.colorHighlight);
-        query = Normalizer.normalize(query, Normalizer.Form.NFKD)
-                .replaceAll("[\\p{InCombiningDiacriticalMarks}]", "");
-
-        // TODO: fix highlighting pre processed text
-
-        List<String> word = new ArrayList<>();
-        List<String> plus = new ArrayList<>();
-        for (String w : query.trim().split("\\s+"))
-            if (w.length() > 1 && (w.startsWith("+") || w.startsWith("-"))) {
-                if (w.startsWith("+"))
-                    plus.add(w.substring(1));
-            } else
-                word.add(w);
-
-        int flags = Pattern.DOTALL | Pattern.CASE_INSENSITIVE;
-        List<Pattern> pat = new ArrayList<>();
-        pat.add(Pattern.compile(".*?\\b(" + TextUtils.join("\\s+", word) + ")\\b.*?", flags));
-        for (String w : plus)
-            pat.add(Pattern.compile(".*?\\b(" + w + ")\\b.*?", flags));
-
-        for (Pattern p : pat)
-            NodeTraversor.traverse(new NodeVisitor() {
-                @Override
-                public void head(Node node, int depth) {
-                    if (node instanceof TextNode)
-                        try {
-                            TextNode tnode = (TextNode) node;
-                            String text = Normalizer.normalize(tnode.getWholeText(), Normalizer.Form.NFKD)
-                                    .replaceAll("[\\p{InCombiningDiacriticalMarks}]", "");
+    static void highlightSearched(Context context, Document document, String query) {
+        try {
+            int color = Helper.resolveColor(context, R.attr.colorHighlight);
+            query = Fts4DbHelper.preprocessText(query);
+
+            // TODO breakText
+            // TODO: fix highlighting pre processed text
+
+            List<String> word = new ArrayList<>();
+            List<String> plus = new ArrayList<>();
+            for (String w : query.trim().split("\\s+"))
+                if (w.length() > 1 && (w.startsWith("+") || w.startsWith("-"))) {
+                    if (w.startsWith("+"))
+                        plus.add(Pattern.quote(w.substring(1)));
+                } else
+                    word.add(Pattern.quote(w));
 
-                            Matcher result = p.matcher(text);
+            int flags = Pattern.DOTALL | Pattern.CASE_INSENSITIVE;
+            List<Pattern> pat = new ArrayList<>();
+            pat.add(Pattern.compile(".*?\\b(" + TextUtils.join("\\s+", word) + ")\\b.*?", flags));
+            for (String w : plus)
+                pat.add(Pattern.compile(".*?\\b(" + w + ")\\b.*?", flags));
 
-                            int prev = 0;
-                            Element holder = document.createElement("span");
-                            while (result.find()) {
-                                int start = result.start(1);
-                                int end = result.end(1);
+            for (Pattern p : pat)
+                NodeTraversor.traverse(new NodeVisitor() {
+                    @Override
+                    public void head(Node node, int depth) {
+                        if (node instanceof TextNode)
+                            try {
+                                TextNode tnode = (TextNode) node;
+                                String text = Fts4DbHelper.preprocessText(tnode.getWholeText());
+
+                                Matcher result = p.matcher(text);
+
+                                int prev = 0;
+                                Element holder = document.createElement("span");
+                                while (result.find()) {
+                                    int start = result.start(1);
+                                    int end = result.end(1);
+
+                                    holder.appendText(text.substring(prev, start));
+
+                                    Element span = document.createElement("span");
+                                    span.attr("style", mergeStyles(
+                                            span.attr("style"),
+                                            "font-size:larger; background-color:" + encodeWebColor(color)
+                                    ));
+                                    span.text(text.substring(start, end));
+                                    holder.appendChild(span);
+
+                                    prev = end;
+                                }
 
-                                holder.appendText(text.substring(prev, start));
+                                if (prev == 0) // No matches
+                                    return;
 
-                                Element span = document.createElement("span");
-                                span.attr("style", mergeStyles(
-                                        span.attr("style"),
-                                        "font-size:larger; background-color:" + encodeWebColor(color)
-                                ));
-                                span.text(text.substring(start, end));
-                                holder.appendChild(span);
+                                if (prev < text.length())
+                                    holder.appendText(text.substring(prev));
 
-                                prev = end;
+                                tnode.before(holder);
+                                tnode.text("");
+                            } catch (Throwable ex) {
+                                Log.e(ex);
                             }
+                    }
 
-                            if (prev == 0) // No matches
-                                return;
-
-                            if (prev < text.length())
-                                holder.appendText(text.substring(prev));
-
-                            tnode.before(holder);
-                            tnode.text("");
-                        } catch (Throwable ex) {
-                            Log.e(ex);
-                        }
-                }
-
-                @Override
-                public void tail(Node node, int depth) {
-                }
-            }, document);
-
-        return document;
+                    @Override
+                    public void tail(Node node, int depth) {
+                    }
+                }, document);
+        } catch (Throwable ex) {
+            Log.e(ex);
+        }
     }
 
     static Document markText(Document document) {