Add CFDictionaryGetCount to c.s.j.p.mac.CoreFoundation

CHANGES.md

@@ -10,6 +10,7 @@ Features
 * [#1398](https://github.com/java-native-access/jna/pull/1398): Increase `c.s.j.p.win32.Sspi#MAX_TOKEN_SIZE` on Windows 8/Server 2012 and later - [@dbwiddis](https://github.com/dbwiddis).
 * [#1403](https://github.com/java-native-access/jna/pull/1403): Rebuild AIX binaries with libffi 3.4.2 (other architectures were part of 5.10) - [@matthiasblaesing](https://github.com/matthiasblaesing).
 * [#1404](https://github.com/java-native-access/jna/issues/1404): Added Solaris Kstat2 library - [@dbwiddis](https://github.com/dbwiddis).
+* [#1416](https://github.com/java-native-access/jna/pull/1416): Add `CFDictionaryGetCount` to `c.s.j.p.mac.CoreFoundation` - [@shalupov](https://github.com/shalupov)
 
 Bug Fixes
 ---------

contrib/platform/src/com/sun/jna/platform/mac/CoreFoundation.java

@@ -401,6 +401,16 @@ public Pointer getValue(PointerType key) {
             return INSTANCE.CFDictionaryGetValue(this, key);
         }
 
+        /**
+         * Convenience method for {@link CoreFoundation#CFDictionaryGetCount(CFDictionaryRef)}
+         * on this object.
+         *
+         * @return The number of key-value pairs in theDict.
+         */
+        public long getCount() {
+            return INSTANCE.CFDictionaryGetCount(this).longValue();
+        }
+
         /**
          * Convenience method for
          * {@link CoreFoundation#CFDictionaryGetValueIfPresent} on this object.
@@ -776,6 +786,15 @@ CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef alloc, CFIndex c
      */
     CFIndex CFGetRetainCount(CFTypeRef cf);
 
+    /**
+     * Returns the number of key-value pairs in a dictionary.
+     *
+     * @param theDict
+     *            The dictionary to examine.
+     * @return The number of key-value pairs in theDict.
+     */
+    CFIndex CFDictionaryGetCount(CoreFoundation.CFDictionaryRef theDict);
+
     /**
      * Returns the value associated with a given key.
      *

contrib/platform/test/com/sun/jna/platform/mac/CoreFoundationTest.java

@@ -209,6 +209,7 @@ public void testCFDictionary() {
         CFStringRef oneStr = CFStringRef.createCFString("one");
 
         // Key does not exist, returns null
+        assertEquals(0L, dict.getCount());
         assertFalse(dict.getValueIfPresent(oneStr, null));
         Pointer cfNull = dict.getValue(oneStr);
         assertNull(cfNull);
@@ -223,6 +224,7 @@ public void testCFDictionary() {
         IntByReference one = new IntByReference(1);
         CFNumberRef cfOne = CF.CFNumberCreate(null, CFNumberType.kCFNumberIntType.typeIndex(), one);
         dict.setValue(oneStr, cfOne);
+        assertEquals(1L, dict.getCount());
 
         assertTrue(dict.getValueIfPresent(oneStr, null));
         Pointer result = dict.getValue(oneStr);
@@ -240,6 +242,7 @@ public void testCFDictionary() {
         result = dict.getValue(onePtr);
         CFStringRef strRef = new CFStringRef(result);
         assertEquals("one", strRef.stringValue());
+        assertEquals(2L, dict.getCount());
 
         oneStr.release();
         cfOne.release();