85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/*
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* Copyright (c) 2016 Google, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Relicensed from the WTFPL (http://www.wtfpl.net/faq/).
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*/
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#include "android_util.h"
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#include <android_native_app_glue.h>
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#include <cassert>
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#include <cstring>
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#include <vector>
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#include <string>
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#include <sstream>
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#include <stdlib.h>
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extern "C" {
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// Convert Intents to arg list, returning argc and argv
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// Note that this C routine mallocs memory that the caller must free
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char **get_args(struct android_app *app, const char *intent_extra_data_key, const char *appTag, int *count) {
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std::vector<std::string> args;
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JavaVM &vm = *app->activity->vm;
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JNIEnv *p_env;
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if (vm.AttachCurrentThread(&p_env, nullptr) != JNI_OK) return nullptr;
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JNIEnv &env = *p_env;
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jobject activity = app->activity->clazz;
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jmethodID get_intent_method = env.GetMethodID(env.GetObjectClass(activity), "getIntent", "()Landroid/content/Intent;");
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jobject intent = env.CallObjectMethod(activity, get_intent_method);
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jmethodID get_string_extra_method =
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env.GetMethodID(env.GetObjectClass(intent), "getStringExtra", "(Ljava/lang/String;)Ljava/lang/String;");
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jvalue get_string_extra_args;
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get_string_extra_args.l = env.NewStringUTF(intent_extra_data_key);
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jstring extra_str = static_cast<jstring>(env.CallObjectMethodA(intent, get_string_extra_method, &get_string_extra_args));
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std::string args_str;
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if (extra_str) {
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const char *extra_utf = env.GetStringUTFChars(extra_str, nullptr);
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args_str = extra_utf;
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env.ReleaseStringUTFChars(extra_str, extra_utf);
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env.DeleteLocalRef(extra_str);
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}
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env.DeleteLocalRef(get_string_extra_args.l);
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env.DeleteLocalRef(intent);
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vm.DetachCurrentThread();
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// split args_str
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std::stringstream ss(args_str);
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std::string arg;
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while (std::getline(ss, arg, ' ')) {
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if (!arg.empty()) args.push_back(arg);
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}
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// Convert our STL results to C friendly constructs
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assert(count != nullptr);
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*count = args.size() + 1;
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char **vector = (char **)malloc(*count * sizeof(char *));
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const char *appName = appTag ? appTag : (const char *)"appTag";
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vector[0] = (char *)malloc(strlen(appName) * sizeof(char));
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strcpy(vector[0], appName);
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for (uint32_t i = 0; i < args.size(); i++) {
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vector[i + 1] = (char *)malloc(strlen(args[i].c_str()) * sizeof(char));
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strcpy(vector[i + 1], args[i].c_str());
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}
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return vector;
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}
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} // extern "C"
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