From c5e5a8c7b716d39ccdf1fd38653317c9853cc39e Mon Sep 17 00:00:00 2001
From: Cody Northrop <cnorthrop@google.com>
Date: Mon, 26 Sep 2016 21:05:00 -0600
Subject: demos: Enable validation for Android cube

---
 common/android_util.cpp | 87 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 common/android_util.cpp

(limited to 'common/android_util.cpp')

diff --git a/common/android_util.cpp b/common/android_util.cpp
new file mode 100644
index 00000000..c2c46169
--- /dev/null
+++ b/common/android_util.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2016 Google, Inc.
+ *
+ * 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.
+ *
+ * Relicensed from the WTFPL (http://www.wtfpl.net/faq/).
+ */
+
+#include "android_util.h"
+#include <android_native_app_glue.h>
+#include <cassert>
+#include <vector>
+#include <string>
+#include <sstream>
+
+extern "C" {
+
+// Convert Intents to arg list, returning argc and argv
+// Note that this C routine mallocs memory that the caller must free
+char** get_args(struct android_app* app, const char* intent_extra_data_key, const char* appTag, int* count)
+{
+    std::vector<std::string> args;
+    JavaVM &vm = *app->activity->vm;
+    JNIEnv *p_env;
+    if (vm.AttachCurrentThread(&p_env, nullptr) != JNI_OK)
+        return nullptr;
+
+    JNIEnv &env = *p_env;
+    jobject activity = app->activity->clazz;
+    jmethodID get_intent_method = env.GetMethodID(env.GetObjectClass(activity),
+            "getIntent", "()Landroid/content/Intent;");
+    jobject intent = env.CallObjectMethod(activity, get_intent_method);
+    jmethodID get_string_extra_method = env.GetMethodID(env.GetObjectClass(intent),
+            "getStringExtra", "(Ljava/lang/String;)Ljava/lang/String;");
+    jvalue get_string_extra_args;
+    get_string_extra_args.l = env.NewStringUTF(intent_extra_data_key);
+    jstring extra_str = static_cast<jstring>(env.CallObjectMethodA(intent,
+            get_string_extra_method, &get_string_extra_args));
+
+    std::string args_str;
+    if (extra_str) {
+        const char *extra_utf = env.GetStringUTFChars(extra_str, nullptr);
+        args_str = extra_utf;
+        env.ReleaseStringUTFChars(extra_str, extra_utf);
+        env.DeleteLocalRef(extra_str);
+    }
+
+    env.DeleteLocalRef(get_string_extra_args.l);
+    env.DeleteLocalRef(intent);
+    vm.DetachCurrentThread();
+
+    // split args_str
+    std::stringstream ss(args_str);
+    std::string arg;
+    while (std::getline(ss, arg, ' ')) {
+        if (!arg.empty())
+            args.push_back(arg);
+    }
+
+    // Convert our STL results to C friendly constructs
+    assert(count != nullptr);
+    *count = args.size() + 1;
+    char** vector = (char**) malloc(*count * sizeof(char*));
+    const char* appName = appTag ? appTag : (const char*) "appTag";
+
+   vector[0] = (char*) malloc(strlen(appName) * sizeof(char));
+   strcpy(vector[0], appName);
+
+    for (uint32_t i = 0; i < args.size(); i++) {
+        vector[i + 1] = (char*) malloc(strlen(args[i].c_str()) * sizeof(char));
+        strcpy(vector[i + 1], args[i].c_str());
+    }
+
+    return vector;
+}
+
+} // extern "C"
-- 
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