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/MetadataListReader.java
+++ b/02-Easy5/E5/sources/androidx/emoji2/text/MetadataListReader.java
@@ -0,0 +1,233 @@
+package androidx.emoji2.text;
+
+import android.content.res.AssetManager;
+import androidx.emoji2.text.flatbuffer.MetadataList;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import kotlin.UShort;
+
+/* loaded from: classes.dex */
+class MetadataListReader {
+    private static final int EMJI_TAG = 1164798569;
+    private static final int EMJI_TAG_DEPRECATED = 1701669481;
+    private static final int META_TABLE_NAME = 1835365473;
+
+    private interface OpenTypeReader {
+        public static final int UINT16_BYTE_COUNT = 2;
+        public static final int UINT32_BYTE_COUNT = 4;
+
+        long getPosition();
+
+        int readTag() throws IOException;
+
+        long readUnsignedInt() throws IOException;
+
+        int readUnsignedShort() throws IOException;
+
+        void skip(int i) throws IOException;
+    }
+
+    static long toUnsignedInt(int i) {
+        return i & 4294967295L;
+    }
+
+    static int toUnsignedShort(short s) {
+        return s & UShort.MAX_VALUE;
+    }
+
+    static MetadataList read(InputStream inputStream) throws IOException {
+        InputStreamOpenTypeReader inputStreamOpenTypeReader = new InputStreamOpenTypeReader(inputStream);
+        OffsetInfo findOffsetInfo = findOffsetInfo(inputStreamOpenTypeReader);
+        inputStreamOpenTypeReader.skip((int) (findOffsetInfo.getStartOffset() - inputStreamOpenTypeReader.getPosition()));
+        ByteBuffer allocate = ByteBuffer.allocate((int) findOffsetInfo.getLength());
+        int read = inputStream.read(allocate.array());
+        if (read != findOffsetInfo.getLength()) {
+            throw new IOException("Needed " + findOffsetInfo.getLength() + " bytes, got " + read);
+        }
+        return MetadataList.getRootAsMetadataList(allocate);
+    }
+
+    static MetadataList read(ByteBuffer byteBuffer) throws IOException {
+        ByteBuffer duplicate = byteBuffer.duplicate();
+        duplicate.position((int) findOffsetInfo(new ByteBufferReader(duplicate)).getStartOffset());
+        return MetadataList.getRootAsMetadataList(duplicate);
+    }
+
+    static MetadataList read(AssetManager assetManager, String str) throws IOException {
+        InputStream open = assetManager.open(str);
+        try {
+            MetadataList read = read(open);
+            if (open != null) {
+                open.close();
+            }
+            return read;
+        } catch (Throwable th) {
+            if (open != null) {
+                try {
+                    open.close();
+                } catch (Throwable th2) {
+                    th.addSuppressed(th2);
+                }
+            }
+            throw th;
+        }
+    }
+
+    private static OffsetInfo findOffsetInfo(OpenTypeReader openTypeReader) throws IOException {
+        long j;
+        openTypeReader.skip(4);
+        int readUnsignedShort = openTypeReader.readUnsignedShort();
+        if (readUnsignedShort > 100) {
+            throw new IOException("Cannot read metadata.");
+        }
+        openTypeReader.skip(6);
+        int i = 0;
+        while (true) {
+            if (i >= readUnsignedShort) {
+                j = -1;
+                break;
+            }
+            int readTag = openTypeReader.readTag();
+            openTypeReader.skip(4);
+            j = openTypeReader.readUnsignedInt();
+            openTypeReader.skip(4);
+            if (META_TABLE_NAME == readTag) {
+                break;
+            }
+            i++;
+        }
+        if (j != -1) {
+            openTypeReader.skip((int) (j - openTypeReader.getPosition()));
+            openTypeReader.skip(12);
+            long readUnsignedInt = openTypeReader.readUnsignedInt();
+            for (int i2 = 0; i2 < readUnsignedInt; i2++) {
+                int readTag2 = openTypeReader.readTag();
+                long readUnsignedInt2 = openTypeReader.readUnsignedInt();
+                long readUnsignedInt3 = openTypeReader.readUnsignedInt();
+                if (EMJI_TAG == readTag2 || EMJI_TAG_DEPRECATED == readTag2) {
+                    return new OffsetInfo(readUnsignedInt2 + j, readUnsignedInt3);
+                }
+            }
+        }
+        throw new IOException("Cannot read metadata.");
+    }
+
+    private static class OffsetInfo {
+        private final long mLength;
+        private final long mStartOffset;
+
+        long getLength() {
+            return this.mLength;
+        }
+
+        long getStartOffset() {
+            return this.mStartOffset;
+        }
+
+        OffsetInfo(long j, long j2) {
+            this.mStartOffset = j;
+            this.mLength = j2;
+        }
+    }
+
+    private static class InputStreamOpenTypeReader implements OpenTypeReader {
+        private final byte[] mByteArray;
+        private final ByteBuffer mByteBuffer;
+        private final InputStream mInputStream;
+        private long mPosition = 0;
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public long getPosition() {
+            return this.mPosition;
+        }
+
+        InputStreamOpenTypeReader(InputStream inputStream) {
+            this.mInputStream = inputStream;
+            byte[] bArr = new byte[4];
+            this.mByteArray = bArr;
+            ByteBuffer wrap = ByteBuffer.wrap(bArr);
+            this.mByteBuffer = wrap;
+            wrap.order(ByteOrder.BIG_ENDIAN);
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public int readUnsignedShort() throws IOException {
+            this.mByteBuffer.position(0);
+            read(2);
+            return MetadataListReader.toUnsignedShort(this.mByteBuffer.getShort());
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public long readUnsignedInt() throws IOException {
+            this.mByteBuffer.position(0);
+            read(4);
+            return MetadataListReader.toUnsignedInt(this.mByteBuffer.getInt());
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public int readTag() throws IOException {
+            this.mByteBuffer.position(0);
+            read(4);
+            return this.mByteBuffer.getInt();
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public void skip(int i) throws IOException {
+            while (i > 0) {
+                int skip = (int) this.mInputStream.skip(i);
+                if (skip < 1) {
+                    throw new IOException("Skip didn't move at least 1 byte forward");
+                }
+                i -= skip;
+                this.mPosition += skip;
+            }
+        }
+
+        private void read(int i) throws IOException {
+            if (this.mInputStream.read(this.mByteArray, 0, i) != i) {
+                throw new IOException("read failed");
+            }
+            this.mPosition += i;
+        }
+    }
+
+    private static class ByteBufferReader implements OpenTypeReader {
+        private final ByteBuffer mByteBuffer;
+
+        ByteBufferReader(ByteBuffer byteBuffer) {
+            this.mByteBuffer = byteBuffer;
+            byteBuffer.order(ByteOrder.BIG_ENDIAN);
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public int readUnsignedShort() throws IOException {
+            return MetadataListReader.toUnsignedShort(this.mByteBuffer.getShort());
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public long readUnsignedInt() throws IOException {
+            return MetadataListReader.toUnsignedInt(this.mByteBuffer.getInt());
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public int readTag() throws IOException {
+            return this.mByteBuffer.getInt();
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public void skip(int i) throws IOException {
+            ByteBuffer byteBuffer = this.mByteBuffer;
+            byteBuffer.position(byteBuffer.position() + i);
+        }
+
+        @Override // androidx.emoji2.text.MetadataListReader.OpenTypeReader
+        public long getPosition() {
+            return this.mByteBuffer.position();
+        }
+    }
+
+    private MetadataListReader() {
+    }
+}