1 // Copyright 2019 The Amber Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <jni.h>
16
17 #include <sstream>
18 #include <string>
19 #include <vector>
20
21 extern int android_main(int argc, const char** argv);
22
23 #pragma clang diagnostic push
24 #pragma clang diagnostic ignored "-Wmissing-prototypes"
25 #pragma ide diagnostic ignored "OCUnusedGlobalDeclarationInspection"
26
Java_com_google_amber_Amber_androidHelper(JNIEnv * env,jobject,jobjectArray args,jstring stdoutFile,jstring stderrFile)27 extern "C" JNIEXPORT JNICALL int Java_com_google_amber_Amber_androidHelper(
28 JNIEnv* env,
29 jobject,
30 jobjectArray args,
31 jstring stdoutFile,
32 jstring stderrFile) {
33 const char* stdout_file_cstr = env->GetStringUTFChars(stdoutFile, nullptr);
34 const char* stderr_file_cstr = env->GetStringUTFChars(stderrFile, nullptr);
35
36 // Redirect std output to a file
37 freopen(stdout_file_cstr, "w", stdout);
38 freopen(stderr_file_cstr, "w", stderr);
39
40 env->ReleaseStringUTFChars(stdoutFile, stdout_file_cstr);
41 env->ReleaseStringUTFChars(stderrFile, stderr_file_cstr);
42
43 jsize arg_count = env->GetArrayLength(args);
44
45 std::vector<std::string> argv_string;
46 argv_string.push_back("amber");
47
48 for (jsize i = 0; i < arg_count; i++) {
49 jstring js = static_cast<jstring>(env->GetObjectArrayElement(args, i));
50 const char* arg_cstr = env->GetStringUTFChars(js, nullptr);
51 argv_string.push_back(arg_cstr);
52 env->ReleaseStringUTFChars(js, arg_cstr);
53 }
54
55 std::vector<const char*> argv;
56
57 for (const std::string& arg : argv_string)
58 argv.push_back(arg.c_str());
59
60 return android_main(static_cast<int>(argv.size()), argv.data());
61 }
62
63 #pragma clang diagnostic pop
64