Add hooks in JNI to start using native path parsing

Change-Id: Iaa0d3c2c1936c248146ed7f186a13e8e79be818e
diff --git a/core/java/android/util/PathParser.java b/core/java/android/util/PathParser.java
index cebb8f0..f099479 100644
--- a/core/java/android/util/PathParser.java
+++ b/core/java/android/util/PathParser.java
@@ -27,21 +27,21 @@
     static final String LOGTAG = PathParser.class.getSimpleName();
 
     /**
-     * @param pathData The string representing a path, the same as "d" string in svg file.
+     * @param pathString The string representing a path, the same as "d" string in svg file.
      * @return the generated Path object.
      */
-    public static Path createPathFromPathData(String pathData) {
-        Path path = new Path();
-        PathDataNode[] nodes = createNodesFromPathData(pathData);
-        if (nodes != null) {
-            try {
-                PathDataNode.nodesToPath(nodes, path);
-            } catch (RuntimeException e) {
-                throw new RuntimeException("Error in parsing " + pathData, e);
-            }
-            return path;
+    public static Path createPathFromPathData(String pathString) {
+        if (pathString == null) {
+            throw new IllegalArgumentException("Path string can not be null.");
         }
-        return null;
+        Path path = new Path();
+        boolean hasValidPathData = nParseStringForPath(path.mNativePath, pathString,
+                pathString.length());
+        if (!hasValidPathData) {
+            throw new IllegalArgumentException("Path string: " + pathString +
+                    " does not contain valid path data");
+        }
+        return path;
     }
 
     /**
@@ -701,4 +701,7 @@
             }
         }
     }
+
+    private static native boolean nParseStringForPath(long pathPtr, String pathString,
+            int stringLength);
 }
diff --git a/core/jni/Android.mk b/core/jni/Android.mk
index ecee2b2..4d648ce 100644
--- a/core/jni/Android.mk
+++ b/core/jni/Android.mk
@@ -89,6 +89,7 @@
     android_util_Binder.cpp \
     android_util_EventLog.cpp \
     android_util_Log.cpp \
+    android_util_PathParser.cpp \
     android_util_Process.cpp \
     android_util_StringBlock.cpp \
     android_util_XmlBlock.cpp \
diff --git a/core/jni/AndroidRuntime.cpp b/core/jni/AndroidRuntime.cpp
index 4e93730..815d330 100644
--- a/core/jni/AndroidRuntime.cpp
+++ b/core/jni/AndroidRuntime.cpp
@@ -110,6 +110,7 @@
 extern int register_android_content_AssetManager(JNIEnv* env);
 extern int register_android_util_EventLog(JNIEnv* env);
 extern int register_android_util_Log(JNIEnv* env);
+extern int register_android_util_PathParser(JNIEnv* env);
 extern int register_android_content_StringBlock(JNIEnv* env);
 extern int register_android_content_XmlBlock(JNIEnv* env);
 extern int register_android_graphics_Canvas(JNIEnv* env);
@@ -1300,6 +1301,7 @@
     REG_JNI(register_android_os_SystemClock),
     REG_JNI(register_android_util_EventLog),
     REG_JNI(register_android_util_Log),
+    REG_JNI(register_android_util_PathParser),
     REG_JNI(register_android_content_AssetManager),
     REG_JNI(register_android_content_StringBlock),
     REG_JNI(register_android_content_XmlBlock),
diff --git a/core/jni/android_util_PathParser.cpp b/core/jni/android_util_PathParser.cpp
new file mode 100644
index 0000000..bf6ffc54
--- /dev/null
+++ b/core/jni/android_util_PathParser.cpp
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "jni.h"
+
+#include <PathParser.h>
+#include <SkPath.h>
+
+#include "core_jni_helpers.h"
+
+namespace android {
+
+static bool parseStringForPath(JNIEnv* env, jobject, jlong skPathHandle, jstring inputPathStr,
+        jint strLength) {
+    const char* pathString = env->GetStringUTFChars(inputPathStr, NULL);
+    SkPath* skPath = reinterpret_cast<SkPath*>(skPathHandle);
+    bool hasValidData = android::uirenderer::PathParser::parseStringForSkPath(skPath, pathString,
+            strLength);
+    env->ReleaseStringUTFChars(inputPathStr, pathString);
+    return hasValidData;
+}
+
+static const JNINativeMethod gMethods[] = {
+    {"nParseStringForPath", "(JLjava/lang/String;I)Z", (void*)parseStringForPath}
+};
+
+int register_android_util_PathParser(JNIEnv* env) {
+    return RegisterMethodsOrDie(env, "android/util/PathParser", gMethods, NELEM(gMethods));
+}
+};