/* //device/libs/android_runtime/android_util_StringBlock.cpp
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**
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#define LOG_TAG "StringBlock"
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#include "jni.h"
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#include <nativehelper/JNIHelp.h>
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#include <utils/misc.h>
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#include <core_jni_helpers.h>
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#include <utils/Log.h>
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#include <androidfw/ResourceTypes.h>
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#include <stdio.h>
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namespace android {
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// ----------------------------------------------------------------------------
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static jlong android_content_StringBlock_nativeCreate(JNIEnv* env, jobject clazz,
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jbyteArray bArray,
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jint off, jint len)
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{
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if (bArray == NULL) {
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jniThrowNullPointerException(env, NULL);
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return 0;
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}
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jsize bLen = env->GetArrayLength(bArray);
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if (off < 0 || off >= bLen || len < 0 || len > bLen || (off+len) > bLen) {
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jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL);
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return 0;
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}
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jbyte* b = env->GetByteArrayElements(bArray, NULL);
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ResStringPool* osb = new ResStringPool(b+off, len, true);
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env->ReleaseByteArrayElements(bArray, b, 0);
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if (osb == NULL || osb->getError() != NO_ERROR) {
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jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
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delete osb;
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return 0;
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}
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return reinterpret_cast<jlong>(osb);
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}
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static jint android_content_StringBlock_nativeGetSize(JNIEnv* env, jobject clazz,
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jlong token)
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{
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ResStringPool* osb = reinterpret_cast<ResStringPool*>(token);
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if (osb == NULL) {
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jniThrowNullPointerException(env, NULL);
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return 0;
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}
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return osb->size();
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}
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static jstring android_content_StringBlock_nativeGetString(JNIEnv* env, jobject clazz,
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jlong token, jint idx)
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{
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ResStringPool* osb = reinterpret_cast<ResStringPool*>(token);
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if (osb == NULL) {
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jniThrowNullPointerException(env, NULL);
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return 0;
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}
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size_t len;
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const char* str8 = osb->string8At(idx, &len);
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if (str8 != NULL) {
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return env->NewStringUTF(str8);
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}
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const char16_t* str = osb->stringAt(idx, &len);
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if (str == NULL) {
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jniThrowException(env, "java/lang/IndexOutOfBoundsException", NULL);
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return 0;
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}
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return env->NewString((const jchar*)str, len);
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}
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static jintArray android_content_StringBlock_nativeGetStyle(JNIEnv* env, jobject clazz,
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jlong token, jint idx)
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{
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ResStringPool* osb = reinterpret_cast<ResStringPool*>(token);
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if (osb == NULL) {
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jniThrowNullPointerException(env, NULL);
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return NULL;
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}
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const ResStringPool_span* spans = osb->styleAt(idx);
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if (spans == NULL) {
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return NULL;
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}
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const ResStringPool_span* pos = spans;
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int num = 0;
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while (pos->name.index != ResStringPool_span::END) {
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num++;
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pos++;
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}
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if (num == 0) {
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return NULL;
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}
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jintArray array = env->NewIntArray((num*sizeof(ResStringPool_span))/sizeof(jint));
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if (array == NULL) { // NewIntArray already threw OutOfMemoryError.
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return NULL;
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}
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num = 0;
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static const int numInts = sizeof(ResStringPool_span)/sizeof(jint);
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while (spans->name.index != ResStringPool_span::END) {
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env->SetIntArrayRegion(array,
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num*numInts, numInts,
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(jint*)spans);
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spans++;
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num++;
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}
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return array;
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}
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static void android_content_StringBlock_nativeDestroy(JNIEnv* env, jobject clazz,
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jlong token)
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{
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ResStringPool* osb = reinterpret_cast<ResStringPool*>(token);
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if (osb == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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delete osb;
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}
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// ----------------------------------------------------------------------------
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/*
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* JNI registration.
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*/
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static const JNINativeMethod gStringBlockMethods[] = {
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/* name, signature, funcPtr */
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{ "nativeCreate", "([BII)J",
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(void*) android_content_StringBlock_nativeCreate },
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{ "nativeGetSize", "(J)I",
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(void*) android_content_StringBlock_nativeGetSize },
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{ "nativeGetString", "(JI)Ljava/lang/String;",
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(void*) android_content_StringBlock_nativeGetString },
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{ "nativeGetStyle", "(JI)[I",
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(void*) android_content_StringBlock_nativeGetStyle },
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{ "nativeDestroy", "(J)V",
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(void*) android_content_StringBlock_nativeDestroy },
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};
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int register_android_content_StringBlock(JNIEnv* env)
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{
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return RegisterMethodsOrDie(env,
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"android/content/res/StringBlock", gStringBlockMethods, NELEM(gStringBlockMethods));
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}
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}; // namespace android
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