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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/jni_array.h"
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/logging.h"
namespace base {
namespace android {
ScopedJavaLocalRef<jbyteArray> ToJavaByteArray(
JNIEnv* env, const uint8* bytes, size_t len) {
jbyteArray byte_array = env->NewByteArray(len);
CheckException(env);
DCHECK(byte_array);
jbyte* elements = env->GetByteArrayElements(byte_array, NULL);
memcpy(elements, bytes, len);
env->ReleaseByteArrayElements(byte_array, elements, 0);
CheckException(env);
return ScopedJavaLocalRef<jbyteArray>(env, byte_array);
}
ScopedJavaLocalRef<jlongArray> ToJavaLongArray(
JNIEnv* env, const int64* longs, size_t len) {
jlongArray long_array = env->NewLongArray(len);
CheckException(env);
DCHECK(long_array);
jlong* elements = env->GetLongArrayElements(long_array, NULL);
memcpy(elements, longs, len * sizeof(*longs));
env->ReleaseLongArrayElements(long_array, elements, 0);
CheckException(env);
return ScopedJavaLocalRef<jlongArray>(env, long_array);
}
// Returns a new Java long array converted from the given int64 array.
BASE_EXPORT ScopedJavaLocalRef<jlongArray> ToJavaLongArray(
JNIEnv* env, const std::vector<int64>& longs) {
return ToJavaLongArray(env, longs.begin(), longs.size());
}
ScopedJavaLocalRef<jobjectArray> ToJavaArrayOfByteArray(
JNIEnv* env, const std::vector<std::string>& v) {
ScopedJavaLocalRef<jclass> byte_array_clazz = GetClass(env, "[B");
jobjectArray joa = env->NewObjectArray(v.size(),
byte_array_clazz.obj(), NULL);
CheckException(env);
for (size_t i = 0; i < v.size(); ++i) {
ScopedJavaLocalRef<jbyteArray> byte_array = ToJavaByteArray(env,
reinterpret_cast<const uint8*>(v[i].data()), v[i].length());
env->SetObjectArrayElement(joa, i, byte_array.obj());
}
return ScopedJavaLocalRef<jobjectArray>(env, joa);
}
ScopedJavaLocalRef<jobjectArray> ToJavaArrayOfStrings(
JNIEnv* env, const std::vector<std::string>& v) {
ScopedJavaLocalRef<jclass> string_clazz = GetClass(env, "java/lang/String");
jobjectArray joa = env->NewObjectArray(v.size(), string_clazz.obj(), NULL);
CheckException(env);
for (size_t i = 0; i < v.size(); ++i) {
ScopedJavaLocalRef<jstring> item = ConvertUTF8ToJavaString(env, v[i]);
env->SetObjectArrayElement(joa, i, item.obj());
}
return ScopedJavaLocalRef<jobjectArray>(env, joa);
}
ScopedJavaLocalRef<jobjectArray> ToJavaArrayOfStrings(
JNIEnv* env, const std::vector<string16>& v) {
ScopedJavaLocalRef<jclass> string_clazz = GetClass(env, "java/lang/String");
jobjectArray joa = env->NewObjectArray(v.size(), string_clazz.obj(), NULL);
CheckException(env);
for (size_t i = 0; i < v.size(); ++i) {
ScopedJavaLocalRef<jstring> item = ConvertUTF16ToJavaString(env, v[i]);
env->SetObjectArrayElement(joa, i, item.obj());
}
return ScopedJavaLocalRef<jobjectArray>(env, joa);
}
void AppendJavaStringArrayToStringVector(JNIEnv* env,
jobjectArray array,
std::vector<string16>* out) {
DCHECK(out);
if (!array)
return;
jsize len = env->GetArrayLength(array);
size_t back = out->size();
out->resize(back + len);
for (jsize i = 0; i < len; ++i) {
ScopedJavaLocalRef<jstring> str(env,
static_cast<jstring>(env->GetObjectArrayElement(array, i)));
ConvertJavaStringToUTF16(env, str.obj(), &((*out)[back + i]));
}
}
void AppendJavaStringArrayToStringVector(JNIEnv* env,
jobjectArray array,
std::vector<std::string>* out) {
DCHECK(out);
if (!array)
return;
jsize len = env->GetArrayLength(array);
size_t back = out->size();
out->resize(back + len);
for (jsize i = 0; i < len; ++i) {
ScopedJavaLocalRef<jstring> str(env,
static_cast<jstring>(env->GetObjectArrayElement(array, i)));
ConvertJavaStringToUTF8(env, str.obj(), &((*out)[back + i]));
}
}
void AppendJavaByteArrayToByteVector(JNIEnv* env,
jbyteArray byte_array,
std::vector<uint8>* out) {
DCHECK(out);
if (!byte_array)
return;
jsize len = env->GetArrayLength(byte_array);
jbyte* bytes = env->GetByteArrayElements(byte_array, NULL);
out->insert(out->end(), bytes, bytes + len);
env->ReleaseByteArrayElements(byte_array, bytes, JNI_ABORT);
}
void JavaByteArrayToByteVector(JNIEnv* env,
jbyteArray byte_array,
std::vector<uint8>* out) {
DCHECK(out);
out->clear();
AppendJavaByteArrayToByteVector(env, byte_array, out);
}
void JavaIntArrayToIntVector(JNIEnv* env,
jintArray int_array,
std::vector<int>* out) {
DCHECK(out);
out->clear();
jsize len = env->GetArrayLength(int_array);
jint* ints = env->GetIntArrayElements(int_array, NULL);
for (jsize i = 0; i < len; ++i) {
out->push_back(static_cast<int>(ints[i]));
}
env->ReleaseIntArrayElements(int_array, ints, JNI_ABORT);
}
void JavaFloatArrayToFloatVector(JNIEnv* env,
jfloatArray float_array,
std::vector<float>* out) {
DCHECK(out);
out->clear();
jsize len = env->GetArrayLength(float_array);
jfloat* floats = env->GetFloatArrayElements(float_array, NULL);
for (jsize i = 0; i < len; ++i) {
out->push_back(static_cast<float>(floats[i]));
}
env->ReleaseFloatArrayElements(float_array, floats, JNI_ABORT);
}
void JavaArrayOfByteArrayToStringVector(
JNIEnv* env,
jobjectArray array,
std::vector<std::string>* out) {
DCHECK(out);
out->clear();
jsize len = env->GetArrayLength(array);
out->resize(len);
for (jsize i = 0; i < len; ++i) {
jbyteArray bytes_array = static_cast<jbyteArray>(
env->GetObjectArrayElement(array, i));
jsize bytes_len = env->GetArrayLength(bytes_array);
jbyte* bytes = env->GetByteArrayElements(bytes_array, NULL);
(*out)[i].assign(reinterpret_cast<const char*>(bytes), bytes_len);
env->ReleaseByteArrayElements(bytes_array, bytes, JNI_ABORT);
}
}
} // namespace android
} // namespace base
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