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Code Issues Releases Wiki Activity

Simplified search highlighting

This commit is contained in:
M66B 2022-12-20 18:55:27 +01:00
parent 62b0491473
commit 209d73b9fb
1 changed files with 52 additions and 57 deletions
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109
app/src/main/java/eu/faircode/email/HtmlHelper.java
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@ -2963,73 +2963,68 @@ public class HtmlHelper {
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
StringBuilder sb = new StringBuilder();
for (String word : query.trim().split("\\s+")) {
if (word.startsWith("+") || word.startsWith("-"))
continue;
for (String w : Fts4DbHelper.breakText(word).split("\\s+")) {
if (sb.length() > 0)
sb.append("\\s*");
sb.append(Pattern.quote(w));
}
}
sb.insert(0, ".*?\\b(");
sb.append(")\\b.*?");
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));
Pattern p = Pattern.compile(sb.toString(), Pattern.DOTALL);
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));
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());
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);
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);
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));
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);
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;
}
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);
prev = end;
}
}
@Override
public void tail(Node node, int depth) {
}
}, document);
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);
} catch (Throwable ex) {
Log.e(ex);
}