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/*
* Copyright (C) 2023 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.
*/
#include <minikin/GraphemeBreak.h>
#include <nativehelper/ScopedPrimitiveArray.h>
#include "GraphicsJNI.h"
namespace android {
static void nIsGraphemeBreak(JNIEnv* env, jclass, jfloatArray advances, jcharArray text, jint start,
jint end, jbooleanArray isGraphemeBreak) {
if (start > end || env->GetArrayLength(advances) < end ||
env->GetArrayLength(isGraphemeBreak) < end - start) {
doThrowAIOOBE(env);
}
if (start == end) {
return;
}
ScopedFloatArrayRO advancesArray(env, advances);
ScopedCharArrayRO textArray(env, text);
ScopedBooleanArrayRW isGraphemeBreakArray(env, isGraphemeBreak);
size_t count = end - start;
for (size_t offset = 0; offset < count; ++offset) {
bool isBreak = minikin::GraphemeBreak::isGraphemeBreak(advancesArray.get(), textArray.get(),
start, end, start + offset);
isGraphemeBreakArray[offset] = isBreak ? JNI_TRUE : JNI_FALSE;
}
}
static const JNINativeMethod gMethods[] = {
{"nIsGraphemeBreak",
"("
"[F" // advances
"[C" // text
"I" // start
"I" // end
"[Z" // isGraphemeBreak
")V",
(void*)nIsGraphemeBreak},
};
int register_android_graphics_text_GraphemeBreak(JNIEnv* env) {
return RegisterMethodsOrDie(env, "android/graphics/text/GraphemeBreak", gMethods,
NELEM(gMethods));
}
} // namespace android
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