1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "jni.h"
18 #include "ScopedLocalRef.h"
19
20 #include <string>
21 #include <vector>
22
23 template <typename Counter, typename Getter>
toStringArray(JNIEnv * env,Counter * counter,Getter * getter)24 jobjectArray toStringArray(JNIEnv* env, Counter* counter, Getter* getter) {
25 size_t count = (*counter)();
26 jobjectArray result = env->NewObjectArray(count, JniConstants::stringClass, NULL);
27 if (result == NULL) {
28 return NULL;
29 }
30 for (size_t i = 0; i < count; ++i) {
31 ScopedLocalRef<jstring> s(env, env->NewStringUTF((*getter)(i)));
32 if (env->ExceptionCheck()) {
33 return NULL;
34 }
35 env->SetObjectArrayElement(result, i, s.get());
36 if (env->ExceptionCheck()) {
37 return NULL;
38 }
39 }
40 return result;
41 }
42
43 template <typename Counter, typename Getter>
toStringArray16(JNIEnv * env,Counter * counter,Getter * getter)44 jobjectArray toStringArray16(JNIEnv* env, Counter* counter, Getter* getter) {
45 size_t count = (*counter)();
46 jobjectArray result = env->NewObjectArray(count, JniConstants::stringClass, NULL);
47 if (result == NULL) {
48 return NULL;
49 }
50 for (size_t i = 0; i < count; ++i) {
51 int32_t charCount;
52 const jchar* chars = (*getter)(&charCount);
53 ScopedLocalRef<jstring> s(env, env->NewString(chars, charCount));
54 if (env->ExceptionCheck()) {
55 return NULL;
56 }
57 env->SetObjectArrayElement(result, i, s.get());
58 if (env->ExceptionCheck()) {
59 return NULL;
60 }
61 }
62 return result;
63 }
64
65 jobjectArray toStringArray(JNIEnv* env, const std::vector<std::string>& strings);
66 jobjectArray toStringArray(JNIEnv* env, const char* const* strings);
67
68 char** convertStrings(JNIEnv* env, jobjectArray javaArray);
69 void freeStrings(JNIEnv* env, jobjectArray javaArray, char** array);
70