add basic support for json array values

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ## [Unreleased]
 ### Added
+- Basic support for json array values
 - Settings option to opt-out code assistance inside editor
 - Kotlin support for key completion and annotation
 

src/main/java/de/marhali/easyi18n/util/JsonArrayUtil.java

@@ -0,0 +1,51 @@
+package de.marhali.easyi18n.util;
+
+import com.google.gson.JsonArray;
+import org.apache.commons.lang.StringEscapeUtils;
+
+import java.util.regex.Pattern;
+
+/**
+ * Utility methods to read and write json arrays.
+ * @author marhali
+ */
+public class JsonArrayUtil {
+
+    public static String ARRAY_PREFIX = "!arr[";
+    public static String ARRAY_SUFFIX = "]";
+    public static char ARRAY_DELIMITER = ';';
+
+    public static String read(JsonArray array) {
+        StringBuilder builder = new StringBuilder(ARRAY_PREFIX);
+
+        for(int i = 0; i < array.size(); i++) {
+            if(i > 0) {
+                builder.append(ARRAY_DELIMITER);
+            }
+
+            String value = array.get(i).getAsString().replace(";", "\\;");
+            builder.append(StringUtil.escapeControls(value, true));
+        }
+
+        builder.append(ARRAY_SUFFIX);
+        return builder.toString();
+    }
+
+    public static JsonArray write(String concat) {
+        concat = concat.substring(ARRAY_PREFIX.length(), concat.length() - ARRAY_SUFFIX.length());
+        String regex = "(?<!\\\\)" + Pattern.quote(String.valueOf(ARRAY_DELIMITER));
+
+        JsonArray array = new JsonArray();
+
+        for(String element : concat.split(regex)) {
+            element = element.replace("\\" + ARRAY_DELIMITER, String.valueOf(ARRAY_DELIMITER));
+            array.add(StringEscapeUtils.unescapeJava(element));
+        }
+
+        return array;
+    }
+
+    public static boolean isArray(String concat) {
+        return concat != null && concat.startsWith(ARRAY_PREFIX) && concat.endsWith(ARRAY_SUFFIX);
+    }
+}

src/main/java/de/marhali/easyi18n/util/JsonUtil.java

@@ -27,8 +27,13 @@ public class JsonUtil {
     public static void writeTree(String locale, JsonObject parent, LocalizedNode node) {
         if(node.isLeaf() && !node.getKey().equals(LocalizedNode.ROOT_KEY)) {
             if(node.getValue().get(locale) != null) {
-                String value = StringEscapeUtils.unescapeJava(node.getValue().get(locale));
-                parent.add(node.getKey(), new JsonPrimitive(value));
+
+                if(JsonArrayUtil.isArray(node.getValue().get(locale))) {
+                    parent.add(node.getKey(), JsonArrayUtil.write(node.getValue().get(locale)));
+                } else {
+                    String value = StringEscapeUtils.unescapeJava(node.getValue().get(locale));
+                    parent.add(node.getKey(), new JsonPrimitive(value));
+                }
             }
 
         } else {
@@ -78,7 +83,11 @@ public class JsonUtil {
                 }
 
                 Map<String, String> messages = leafNode.getValue();
-                String value = StringUtil.escapeControls(entry.getValue().getAsString(), true);
+
+                String value = entry.getValue().isJsonArray()
+                        ? JsonArrayUtil.read(entry.getValue().getAsJsonArray())
+                        : StringUtil.escapeControls(entry.getValue().getAsString(), true);
+
                 messages.put(locale, value);
                 leafNode.setValue(messages);
             }