Add attributes support for U.toXml(map).

Author: javadev

src/main/java/com/github/underscore/lodash/U.java

@@ -1745,6 +1745,8 @@ public static String toJson(Map map) {
     public static class XmlStringBuilder {
         protected final StringBuilder builder;
         private int ident;
+        private int saveAttrPosition;
+        private int saveTextPosition;
 
         public XmlStringBuilder() {
             builder = new StringBuilder("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<root>\n");
@@ -1757,10 +1759,32 @@ public XmlStringBuilder(StringBuilder builder, int ident) {
         }
 
         public XmlStringBuilder append(final String string) {
+            if (">".equals(string)) {
+                saveAttrPosition = builder.length();
+                saveTextPosition = builder.length() + 1;
+            }
             builder.append(string);
             return this;
         }
 
+        public XmlStringBuilder insert(final String key, final String value) {
+            builder.insert(saveAttrPosition, " " + key + "=\"");
+            saveAttrPosition += (" " + key + "=\"").length();
+            saveTextPosition += (" " + key + "=\"").length();
+            builder.insert(saveAttrPosition, value + "\"");
+            saveAttrPosition += (value + "\"").length();
+            saveTextPosition += (value + "\"").length();
+            return this;
+        }
+
+        public XmlStringBuilder insert(final String value) {
+            builder.delete(saveTextPosition, saveTextPosition + 1);
+            builder.insert(saveTextPosition, value);
+            saveTextPosition += value.length();
+            saveAttrPosition += value.length();
+            return this;
+        }
+
         public XmlStringBuilder fillSpaces() {
             for (int index = 0; index < ident; index += 1) {
                 builder.append(' ');
@@ -1985,13 +2009,26 @@ public static void writeXml(Map map, XmlStringBuilder builder) {
             }
 
             Iterator iter = map.entrySet().iterator();
+            boolean textWasInserted = false;
             while (iter.hasNext()) {
                 Map.Entry entry = (Map.Entry) iter.next();
-                builder.fillSpaces().append("<").append(escape(String.valueOf(entry.getKey()))).append(">");
-                XmlValue.writeXml(entry.getValue(), builder);
-                builder.append("</").append(escape(String.valueOf(entry.getKey()))).append(">");
-                if (iter.hasNext()) {
-                    builder.newLine();
+                if (escape(String.valueOf(entry.getKey())).startsWith("-") && entry.getValue() instanceof String) {
+                    builder.insert(escape(String.valueOf(entry.getKey())).substring(1), escape((String) entry.getValue()));
+                } else if ("#text".equals(escape(String.valueOf(entry.getKey())))) {
+                    builder.insert(escape((String) entry.getValue()));
+                    textWasInserted = true;
+                } else {
+                    if (textWasInserted) {
+                        textWasInserted = false;
+                    } else {
+                        builder.fillSpaces();
+                    }
+                    builder.append("<").append(escape(String.valueOf(entry.getKey()))).append(">");
+                    XmlValue.writeXml(entry.getValue(), builder);
+                    builder.append("</").append(escape(String.valueOf(entry.getKey()))).append(">");
+                    if (iter.hasNext()) {
+                        builder.newLine();
+                    }
                 }
             }
         }

src/test/java/com/github/underscore/lodash/StringTest.java

@@ -1371,6 +1371,53 @@ public void toXmlFromJson() {
             U.toXml((Map<String, Object>) U.fromJson(json)));
     }
 
+    @SuppressWarnings("unchecked")
+    @Test
+    public void toXmlFromJson2() {
+        final String json = "{\n"
+                + "  \"widget\": {\n"
+                + "    \"debug\": \"on\",\n"
+                + "    \"window\": {\n"
+                + "      \"-title\": \"Sample Konfabulator Widget\",\n"
+                + "      \"#text\": \"\\n    I just put some text here\\n    \",\n"
+                + "      \"name\": \"main_window\",\n"
+                + "      \"width\": \"500\",\n"
+                + "      \"height\": \"500\"\n"
+                + "    },\n"
+                + "    \"image\": {\n"
+                + "      \"-name\": \"sun1\",\n"
+                + "      \"-src\": \"Images\\/Sun.png\",\n"
+                + "      \"-test\": [],\n"
+                + "      \"hOffset\": {\n"
+                + "        \"#text\": \"250\",\n"
+                + "        \"unit\": \"mm\"\n"
+                + "      },\n"
+                + "      \"vOffset\": \"250\",\n"
+                + "      \"alignment\": \"center\"\n"
+                + "    }\n"
+                + "  }\n"
+                + "}";
+        assertEquals("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+                + "<widget>\n"
+                + "  <debug>on</debug>\n"
+                + "  <window title=\"Sample Konfabulator Widget\">\n"
+                + "    I just put some text here\n"
+                + "    <name>main_window</name>\n"
+                + "    <width>500</width>\n"
+                + "    <height>500</height>\n"
+                + "  </window>\n"
+                + "  <image name=\"sun1\" src=\"Images/Sun.png\">\n"
+                + "    <-test>\n\n"
+                + "    </-test>\n"
+                + "    <hOffset>250<unit>mm</unit>\n"
+                + "    </hOffset>\n"
+                + "    <vOffset>250</vOffset>\n"
+                + "    <alignment>center</alignment>\n"
+                + "  </image>\n"
+                + "</widget>",
+                U.toXml((Map<String, Object>) U.fromJson(json)));
+    }
+
     @SuppressWarnings("unchecked")
     @Test
     public void toXml() {