ADD week 5

2025-03-31 16:33:42 +02:00
parent 86f265f22d
commit bf645048e6
4927 changed files with 544053 additions and 0 deletions
--- a/02-Easy5/E5/sources/androidx/emoji2/text/flatbuffer/Utf8.java
+++ b/02-Easy5/E5/sources/androidx/emoji2/text/flatbuffer/Utf8.java
@@ -0,0 +1,94 @@
+package androidx.emoji2.text.flatbuffer;
+
+import java.nio.ByteBuffer;
+
+/* loaded from: classes.dex */
+public abstract class Utf8 {
+    private static Utf8 DEFAULT;
+
+    public static void setDefault(Utf8 utf8) {
+        DEFAULT = utf8;
+    }
+
+    public abstract String decodeUtf8(ByteBuffer byteBuffer, int i, int i2);
+
+    public abstract void encodeUtf8(CharSequence charSequence, ByteBuffer byteBuffer);
+
+    public abstract int encodedLength(CharSequence charSequence);
+
+    public static Utf8 getDefault() {
+        if (DEFAULT == null) {
+            DEFAULT = new Utf8Safe();
+        }
+        return DEFAULT;
+    }
+
+    static class DecodeUtil {
+        private static char highSurrogate(int i) {
+            return (char) ((i >>> 10) + 55232);
+        }
+
+        private static boolean isNotTrailingByte(byte b) {
+            return b > -65;
+        }
+
+        static boolean isOneByte(byte b) {
+            return b >= 0;
+        }
+
+        static boolean isThreeBytes(byte b) {
+            return b < -16;
+        }
+
+        static boolean isTwoBytes(byte b) {
+            return b < -32;
+        }
+
+        private static char lowSurrogate(int i) {
+            return (char) ((i & 1023) + 56320);
+        }
+
+        private static int trailingByteValue(byte b) {
+            return b & 63;
+        }
+
+        DecodeUtil() {
+        }
+
+        static void handleOneByte(byte b, char[] cArr, int i) {
+            cArr[i] = (char) b;
+        }
+
+        static void handleTwoBytes(byte b, byte b2, char[] cArr, int i) throws IllegalArgumentException {
+            if (b < -62) {
+                throw new IllegalArgumentException("Invalid UTF-8: Illegal leading byte in 2 bytes utf");
+            }
+            if (isNotTrailingByte(b2)) {
+                throw new IllegalArgumentException("Invalid UTF-8: Illegal trailing byte in 2 bytes utf");
+            }
+            cArr[i] = (char) (((b & 31) << 6) | trailingByteValue(b2));
+        }
+
+        static void handleThreeBytes(byte b, byte b2, byte b3, char[] cArr, int i) throws IllegalArgumentException {
+            if (isNotTrailingByte(b2) || ((b == -32 && b2 < -96) || ((b == -19 && b2 >= -96) || isNotTrailingByte(b3)))) {
+                throw new IllegalArgumentException("Invalid UTF-8");
+            }
+            cArr[i] = (char) (((b & 15) << 12) | (trailingByteValue(b2) << 6) | trailingByteValue(b3));
+        }
+
+        static void handleFourBytes(byte b, byte b2, byte b3, byte b4, char[] cArr, int i) throws IllegalArgumentException {
+            if (isNotTrailingByte(b2) || (((b << 28) + (b2 + 112)) >> 30) != 0 || isNotTrailingByte(b3) || isNotTrailingByte(b4)) {
+                throw new IllegalArgumentException("Invalid UTF-8");
+            }
+            int trailingByteValue = ((b & 7) << 18) | (trailingByteValue(b2) << 12) | (trailingByteValue(b3) << 6) | trailingByteValue(b4);
+            cArr[i] = highSurrogate(trailingByteValue);
+            cArr[i + 1] = lowSurrogate(trailingByteValue);
+        }
+    }
+
+    static class UnpairedSurrogateException extends IllegalArgumentException {
+        UnpairedSurrogateException(int i, int i2) {
+            super("Unpaired surrogate at index " + i + " of " + i2);
+        }
+    }
+}