86 lines
3.1 KiB
Java
86 lines
3.1 KiB
Java
package androidx.emoji2.text.flatbuffer;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.CharacterCodingException;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.CharsetEncoder;
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import java.nio.charset.CoderResult;
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import java.nio.charset.StandardCharsets;
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import java.util.function.Supplier;
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/* loaded from: classes.dex */
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public class Utf8Old extends Utf8 {
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private static final ThreadLocal<Cache> CACHE;
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/* JADX INFO: Access modifiers changed from: private */
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static class Cache {
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CharSequence lastInput = null;
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ByteBuffer lastOutput = null;
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final CharsetEncoder encoder = StandardCharsets.UTF_8.newEncoder();
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final CharsetDecoder decoder = StandardCharsets.UTF_8.newDecoder();
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Cache() {
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}
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}
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static {
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ThreadLocal<Cache> withInitial;
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withInitial = ThreadLocal.withInitial(new Supplier() { // from class: androidx.emoji2.text.flatbuffer.Utf8Old$$ExternalSyntheticLambda1
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@Override // java.util.function.Supplier
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public final Object get() {
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return Utf8Old.lambda$static$0();
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}
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});
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CACHE = withInitial;
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}
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static /* synthetic */ Cache lambda$static$0() {
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return new Cache();
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}
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@Override // androidx.emoji2.text.flatbuffer.Utf8
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public int encodedLength(CharSequence charSequence) {
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Cache cache = CACHE.get();
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int length = (int) (charSequence.length() * cache.encoder.maxBytesPerChar());
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if (cache.lastOutput == null || cache.lastOutput.capacity() < length) {
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cache.lastOutput = ByteBuffer.allocate(Math.max(128, length));
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}
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cache.lastOutput.clear();
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cache.lastInput = charSequence;
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CoderResult encode = cache.encoder.encode(charSequence instanceof CharBuffer ? (CharBuffer) charSequence : CharBuffer.wrap(charSequence), cache.lastOutput, true);
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if (encode.isError()) {
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try {
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encode.throwException();
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} catch (CharacterCodingException e) {
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throw new IllegalArgumentException("bad character encoding", e);
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}
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}
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cache.lastOutput.flip();
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return cache.lastOutput.remaining();
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}
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@Override // androidx.emoji2.text.flatbuffer.Utf8
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public void encodeUtf8(CharSequence charSequence, ByteBuffer byteBuffer) {
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Cache cache = CACHE.get();
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if (cache.lastInput != charSequence) {
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encodedLength(charSequence);
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}
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byteBuffer.put(cache.lastOutput);
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}
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@Override // androidx.emoji2.text.flatbuffer.Utf8
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public String decodeUtf8(ByteBuffer byteBuffer, int i, int i2) {
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CharsetDecoder charsetDecoder = CACHE.get().decoder;
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charsetDecoder.reset();
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ByteBuffer duplicate = byteBuffer.duplicate();
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duplicate.position(i);
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duplicate.limit(i + i2);
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try {
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return charsetDecoder.decode(duplicate).toString();
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} catch (CharacterCodingException e) {
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throw new IllegalArgumentException("Bad encoding", e);
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}
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}
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}
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