Remove usage of deprecated commons-httpclient 3 library

src/main/java/org/jenkinsci/plugins/sonargerrit/sonar/preview_mode_analysis/DateTypeConverter.java

@@ -2,43 +2,83 @@
 
 import com.google.gson.*;
 import java.lang.reflect.Type;
-import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
 import java.util.Date;
+import java.util.List;
+import java.util.TimeZone;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import org.apache.commons.httpclient.util.DateParseException;
-import org.apache.commons.httpclient.util.DateUtil;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 
 /** Project: Sonar-Gerrit Plugin Author: Tatiana Didik Created: 11.06.2015 16:54 */
 // todo do something with magical date format
 @Restricted(NoExternalUse.class)
 class DateTypeConverter implements JsonSerializer<Date>, JsonDeserializer<Date> {
+
+  /** Date format pattern used to parse HTTP date headers in RFC 1123 format. */
+  private static final String PATTERN_RFC1123 = "EEE, dd MMM yyyy HH:mm:ss zzz";
+
+  /** Date format pattern used to parse HTTP date headers in RFC 1036 format. */
+  private static final String PATTERN_RFC1036 = "EEEE, dd-MMM-yy HH:mm:ss zzz";
+
+  /**
+   * Date format pattern used to parse HTTP date headers in ANSI C <code>asctime()</code> format.
+   */
+  private static final String PATTERN_ASCTIME = "EEE MMM d HH:mm:ss yyyy";
+
+  /** Date format pattern used to parse HTTP date headers in ISO 8601 format. */
+  private static final String PATTERN_ISO8601 = "yyyy-MM-dd'T'hh:mm:ssz";
+
   private static final Logger LOGGER = Logger.getLogger(DateTypeConverter.class.getName());
+
   // @Override
   @Override
   public JsonElement serialize(Date src, Type srcType, JsonSerializationContext context) {
-    return new JsonPrimitive(DateUtil.formatDate(src));
+    SimpleDateFormat formatter = new SimpleDateFormat(PATTERN_RFC1123);
+    formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
+    return new JsonPrimitive(formatter.format(src));
   }
 
   // @Override
   @Override
   public Date deserialize(JsonElement json, Type type, JsonDeserializationContext context) {
     String str = json.getAsString();
-    try {
-      return DateUtil.parseDate(str);
-    } catch (DateParseException e) {
+
+    // trim single quotes around date if present
+    if (str.length() > 1 && str.startsWith("'") && str.endsWith("'")) {
+      str = str.substring(1, str.length() - 1);
+    }
+
+    SimpleDateFormat dateParser = null;
+    List<ParseException> exceptions = new ArrayList<>();
+    for (String format :
+        Arrays.asList(PATTERN_ASCTIME, PATTERN_RFC1036, PATTERN_RFC1123, PATTERN_ISO8601)) {
+      if (dateParser == null) {
+        dateParser = new SimpleDateFormat(format);
+        dateParser.setTimeZone(TimeZone.getTimeZone("GMT"));
+        Calendar calendar = Calendar.getInstance();
+        calendar.set(2000, Calendar.JANUARY, 1, 0, 0);
+        dateParser.set2DigitYearStart(calendar.getTime());
+      } else {
+        dateParser.applyPattern(format);
+      }
       try {
-        DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ssz");
-        return df.parse(str);
-      } catch (ParseException e1) {
-        LOGGER.log(
-            Level.WARNING, "An exception occurred on DateTypeConverter: {0}", e.getStackTrace());
-        throw new JsonParseException(e);
+        return dateParser.parse(str);
+      } catch (ParseException e) {
+        exceptions.add(e);
       }
     }
+
+    JsonParseException e = new JsonParseException("Unable to parse the date " + str);
+    for (ParseException exception : exceptions) {
+      e.addSuppressed(exception);
+    }
+    LOGGER.log(Level.WARNING, "An exception occurred on DateTypeConverter", e);
+    throw e;
   }
 }