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Diffstat (limited to 'samples/android_main.cc')
-rw-r--r-- | samples/android_main.cc | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/samples/android_main.cc b/samples/android_main.cc new file mode 100644 index 0000000..b24a9bb --- /dev/null +++ b/samples/android_main.cc @@ -0,0 +1,57 @@ +// Copyright 2019 The Amber Authors. +// +// 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 <sstream> +#include <string> +#include <vector> + +extern int main(int argc, const char** argv); + +extern "C" JNIEXPORT JNICALL int Java_com_google_amber_Amber_androidMain( + JNIEnv* env, + jobject, + jobjectArray args, + jstring stdoutFile, + jstring stderrFile) { + const char* stdout_file_cstr = env->GetStringUTFChars(stdoutFile, NULL); + const char* stderr_file_cstr = env->GetStringUTFChars(stderrFile, NULL); + + // Redirect std output to a file + freopen(stdout_file_cstr, "w", stdout); + freopen(stderr_file_cstr, "w", stderr); + + env->ReleaseStringUTFChars(stdoutFile, stdout_file_cstr); + env->ReleaseStringUTFChars(stderrFile, stderr_file_cstr); + + jsize arg_count = env->GetArrayLength(args); + + std::vector<std::string> argv_string; + argv_string.push_back("amber"); + + for (jsize i = 0; i < arg_count; i++) { + jstring js = static_cast<jstring>(env->GetObjectArrayElement(args, i)); + const char* arg_cstr = env->GetStringUTFChars(js, NULL); + argv_string.push_back(arg_cstr); + env->ReleaseStringUTFChars(js, arg_cstr); + } + + std::vector<const char*> argv; + + for (const std::string& arg : argv_string) + argv.push_back(arg.c_str()); + + return main(argv.size(), argv.data()); +} |