✨ #4

src/main/java/org/b3log/solo/Server.java

@@ -300,6 +300,14 @@ public final class Server extends BaseServer {
 
             final SkinMgmtService skinMgmtService = beanManager.getReference(SkinMgmtService.class);
             skinMgmtService.loadSkins(skin);
+
+            final JSONObject preference = optionQueryService.getPreference();
+            if (null == preference) {
+                return;
+            }
+
+            final String showClodeBlockLn = preference.optString(org.b3log.solo.model.Option.ID_C_SHOW_CODE_BLOCK_LN);
+            Markdowns.SHOW_CODE_BLOCK_LN = StringUtils.equalsIgnoreCase(showClodeBlockLn, "true");
         } catch (final Exception e) {
             LOGGER.log(Level.ERROR, e.getMessage(), e);
 

src/main/java/org/b3log/solo/service/PreferenceMgmtService.java

@@ -30,6 +30,7 @@ import org.b3log.latke.service.annotation.Service;
 import org.b3log.latke.util.Locales;
 import org.b3log.solo.model.Option;
 import org.b3log.solo.repository.OptionRepository;
+import org.b3log.solo.util.Markdowns;
 import org.json.JSONObject;
 
 import java.util.Iterator;
@@ -221,21 +222,26 @@ public class PreferenceMgmtService {
             optionRepository.update(Option.ID_C_HLJS_THEME, hljsThemeOpt);
 
             JSONObject showCodeBlockLnOpt = optionRepository.get(Option.ID_C_SHOW_CODE_BLOCK_LN);
+            final String showCodeBlockLnVal = preference.optString(Option.ID_C_SHOW_CODE_BLOCK_LN);
             if (null == showCodeBlockLnOpt) {
                 showCodeBlockLnOpt = new JSONObject();
                 showCodeBlockLnOpt.put(Keys.OBJECT_ID, Option.ID_C_SHOW_CODE_BLOCK_LN);
                 showCodeBlockLnOpt.put(Option.OPTION_CATEGORY, Option.CATEGORY_C_PREFERENCE);
-                showCodeBlockLnOpt.put(Option.OPTION_VALUE, preference.optString(Option.ID_C_SHOW_CODE_BLOCK_LN));
+                showCodeBlockLnOpt.put(Option.OPTION_VALUE, showCodeBlockLnVal);
                 optionRepository.add(showCodeBlockLnOpt);
             } else {
-                showCodeBlockLnOpt.put(Option.OPTION_VALUE, preference.optString(Option.ID_C_SHOW_CODE_BLOCK_LN));
+                showCodeBlockLnOpt.put(Option.OPTION_VALUE, showCodeBlockLnVal);
                 optionRepository.update(Option.ID_C_SHOW_CODE_BLOCK_LN, showCodeBlockLnOpt);
             }
+            Markdowns.SHOW_CODE_BLOCK_LN = "true".equalsIgnoreCase(showCodeBlockLnVal);
+
             final JSONObject customVarsOpt = optionRepository.get(Option.ID_C_CUSTOM_VARS);
             customVarsOpt.put(Option.OPTION_VALUE, preference.optString(Option.ID_C_CUSTOM_VARS));
             optionRepository.update(Option.ID_C_CUSTOM_VARS, customVarsOpt);
 
             transaction.commit();
+
+            Markdowns.clearCache();
         } catch (final Exception e) {
             if (transaction.isActive()) {
                 transaction.rollback();

src/main/java/org/b3log/solo/util/Markdowns.java

@@ -60,7 +60,7 @@ import java.util.concurrent.*;
  * </p>
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 2.3.1.11, Jan 17, 2020
+ * @version 2.3.1.12, Jan 18, 2020
  * @since 0.4.5
  */
 public final class Markdowns {
@@ -112,6 +112,15 @@ public final class Markdowns {
      */
     public static boolean LUTE_AVAILABLE;
 
+    public static boolean SHOW_CODE_BLOCK_LN = false;
+
+    /**
+     * Clears cache.
+     */
+    public static void clearCache() {
+        MD_CACHE.clear();
+    }
+
     /**
      * Cleans the specified HTML.
      *
@@ -258,6 +267,7 @@ public final class Markdowns {
     private static String toHtmlByLute(final String markdownText) throws Exception {
         final URL url = new URL(LUTE_ENGINE_URL);
         final HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setRequestProperty("X-CodeSyntaxHighlightLineNum", String.valueOf(Markdowns.SHOW_CODE_BLOCK_LN));
         conn.setConnectTimeout(100);
         conn.setReadTimeout(1000);
         conn.setDoOutput(true);