| /* //device/libs/android_runtime/android_util_StringBlock.cpp |
| ** |
| ** Copyright 2006, The Android Open Source Project |
| ** |
| ** 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. |
| */ |
| |
| #define LOG_TAG "StringBlock" |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include <utils/misc.h> |
| #include <core_jni_helpers.h> |
| #include <utils/Log.h> |
| |
| #include <androidfw/ResourceTypes.h> |
| |
| #include <stdio.h> |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| |
| static jlong android_content_StringBlock_nativeCreate(JNIEnv* env, jobject clazz, |
| jbyteArray bArray, |
| jint off, jint len) |
| { |
| if (bArray == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return 0; |
| } |
| |
| jsize bLen = env->GetArrayLength(bArray); |
| if (off < 0 || off >= bLen || len < 0 || len > bLen || (off+len) > bLen) { |
| jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL); |
| return 0; |
| } |
| |
| jbyte* b = env->GetByteArrayElements(bArray, NULL); |
| ResStringPool* osb = new ResStringPool(b+off, len, true); |
| env->ReleaseByteArrayElements(bArray, b, 0); |
| |
| if (osb == NULL || osb->getError() != NO_ERROR) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| delete osb; |
| return 0; |
| } |
| |
| return reinterpret_cast<jlong>(osb); |
| } |
| |
| static jint android_content_StringBlock_nativeGetSize(JNIEnv* env, jobject clazz, |
| jlong token) |
| { |
| ResStringPool* osb = reinterpret_cast<ResStringPool*>(token); |
| if (osb == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return 0; |
| } |
| |
| return osb->size(); |
| } |
| |
| static jstring android_content_StringBlock_nativeGetString(JNIEnv* env, jobject clazz, |
| jlong token, jint idx) |
| { |
| ResStringPool* osb = reinterpret_cast<ResStringPool*>(token); |
| if (osb == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return 0; |
| } |
| |
| size_t len; |
| const char* str8 = osb->string8At(idx, &len); |
| if (str8 != NULL) { |
| return env->NewStringUTF(str8); |
| } |
| |
| const char16_t* str = osb->stringAt(idx, &len); |
| if (str == NULL) { |
| jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL); |
| return 0; |
| } |
| |
| return env->NewString((const jchar*)str, len); |
| } |
| |
| static jintArray android_content_StringBlock_nativeGetStyle(JNIEnv* env, jobject clazz, |
| jlong token, jint idx) |
| { |
| ResStringPool* osb = reinterpret_cast<ResStringPool*>(token); |
| if (osb == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return NULL; |
| } |
| |
| const ResStringPool_span* spans = osb->styleAt(idx); |
| if (spans == NULL) { |
| return NULL; |
| } |
| |
| const ResStringPool_span* pos = spans; |
| int num = 0; |
| while (pos->name.index != ResStringPool_span::END) { |
| num++; |
| pos++; |
| } |
| |
| if (num == 0) { |
| return NULL; |
| } |
| |
| jintArray array = env->NewIntArray((num*sizeof(ResStringPool_span))/sizeof(jint)); |
| if (array == NULL) { // NewIntArray already threw OutOfMemoryError. |
| return NULL; |
| } |
| |
| num = 0; |
| static const int numInts = sizeof(ResStringPool_span)/sizeof(jint); |
| while (spans->name.index != ResStringPool_span::END) { |
| env->SetIntArrayRegion(array, |
| num*numInts, numInts, |
| (jint*)spans); |
| spans++; |
| num++; |
| } |
| |
| return array; |
| } |
| |
| static void android_content_StringBlock_nativeDestroy(JNIEnv* env, jobject clazz, |
| jlong token) |
| { |
| ResStringPool* osb = reinterpret_cast<ResStringPool*>(token); |
| if (osb == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return; |
| } |
| |
| delete osb; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| /* |
| * JNI registration. |
| */ |
| static const JNINativeMethod gStringBlockMethods[] = { |
| /* name, signature, funcPtr */ |
| { "nativeCreate", "([BII)J", |
| (void*) android_content_StringBlock_nativeCreate }, |
| { "nativeGetSize", "(J)I", |
| (void*) android_content_StringBlock_nativeGetSize }, |
| { "nativeGetString", "(JI)Ljava/lang/String;", |
| (void*) android_content_StringBlock_nativeGetString }, |
| { "nativeGetStyle", "(JI)[I", |
| (void*) android_content_StringBlock_nativeGetStyle }, |
| { "nativeDestroy", "(J)V", |
| (void*) android_content_StringBlock_nativeDestroy }, |
| }; |
| |
| int register_android_content_StringBlock(JNIEnv* env) |
| { |
| return RegisterMethodsOrDie(env, |
| "android/content/res/StringBlock", gStringBlockMethods, NELEM(gStringBlockMethods)); |
| } |
| |
| }; // namespace android |