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/* //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 <utils/misc.h>
#include <android_runtime/AndroidRuntime.h>
#include <utils/Log.h>
#include <utils/ResourceTypes.h>
#include <stdio.h>
namespace android {
// ----------------------------------------------------------------------------
static void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL)
{
jclass npeClazz;
npeClazz = env->FindClass(exc);
LOG_FATAL_IF(npeClazz == NULL, "Unable to find class %s", exc);
env->ThrowNew(npeClazz, msg);
}
static jint android_content_StringBlock_nativeCreate(JNIEnv* env, jobject clazz,
jbyteArray bArray,
jint off, jint len)
{
if (bArray == NULL) {
doThrow(env, "java/lang/NullPointerException");
return 0;
}
jsize bLen = env->GetArrayLength(bArray);
if (off < 0 || off >= bLen || len < 0 || len > bLen || (off+len) > bLen) {
doThrow(env, "java/lang/IndexOutOfBoundsException");
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) {
doThrow(env, "java/lang/IllegalArgumentException");
return 0;
}
return (jint)osb;
}
static jint android_content_StringBlock_nativeGetSize(JNIEnv* env, jobject clazz,
jint token)
{
ResStringPool* osb = (ResStringPool*)token;
if (osb == NULL) {
doThrow(env, "java/lang/NullPointerException");
return 0;
}
return osb->size();
}
static jstring android_content_StringBlock_nativeGetString(JNIEnv* env, jobject clazz,
jint token, jint idx)
{
ResStringPool* osb = (ResStringPool*)token;
if (osb == NULL) {
doThrow(env, "java/lang/NullPointerException");
return 0;
}
size_t len;
const char16_t* str = osb->stringAt(idx, &len);
if (str == NULL) {
doThrow(env, "java/lang/IndexOutOfBoundsException");
return 0;
}
return env->NewString((const jchar*)str, len);
}
static jintArray android_content_StringBlock_nativeGetStyle(JNIEnv* env, jobject clazz,
jint token, jint idx)
{
ResStringPool* osb = (ResStringPool*)token;
if (osb == NULL) {
doThrow(env, "java/lang/NullPointerException");
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) {
doThrow(env, "java/lang/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 jint android_content_StringBlock_nativeIndexOfString(JNIEnv* env, jobject clazz,
jint token, jstring str)
{
ResStringPool* osb = (ResStringPool*)token;
if (osb == NULL || str == NULL) {
doThrow(env, "java/lang/NullPointerException");
return 0;
}
const char16_t* str16 = env->GetStringChars(str, NULL);
jsize strLen = env->GetStringLength(str);
ssize_t idx = osb->indexOfString(str16, strLen);
env->ReleaseStringChars(str, str16);
return idx;
}
static void android_content_StringBlock_nativeDestroy(JNIEnv* env, jobject clazz,
jint token)
{
ResStringPool* osb = (ResStringPool*)token;
if (osb == NULL) {
doThrow(env, "java/lang/NullPointerException");
return;
}
delete osb;
}
// ----------------------------------------------------------------------------
/*
* JNI registration.
*/
static JNINativeMethod gStringBlockMethods[] = {
/* name, signature, funcPtr */
{ "nativeCreate", "([BII)I",
(void*) android_content_StringBlock_nativeCreate },
{ "nativeGetSize", "(I)I",
(void*) android_content_StringBlock_nativeGetSize },
{ "nativeGetString", "(II)Ljava/lang/String;",
(void*) android_content_StringBlock_nativeGetString },
{ "nativeGetStyle", "(II)[I",
(void*) android_content_StringBlock_nativeGetStyle },
{ "nativeIndexOfString","(ILjava/lang/String;)I",
(void*) android_content_StringBlock_nativeIndexOfString },
{ "nativeDestroy", "(I)V",
(void*) android_content_StringBlock_nativeDestroy },
};
int register_android_content_StringBlock(JNIEnv* env)
{
return AndroidRuntime::registerNativeMethods(env,
"android/content/res/StringBlock", gStringBlockMethods, NELEM(gStringBlockMethods));
}
}; // namespace android
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