Update (#470)

* condense generated `static_dict_lut.h`
 * implement BrotliInputStream.close()

enc/brotli_bit_stream.c

@@ -1336,7 +1336,6 @@ void BrotliStoreSyncMetaBlock(size_t* BROTLI_RESTRICT storage_ix,
   JumpToByteBoundary(storage_ix, storage);
 }
 
-
 #if defined(__cplusplus) || defined(c_plusplus)
 }  /* extern "C" */
 #endif

java/dec/BitReader.java

@@ -159,6 +159,14 @@ class BitReader {
     fillBitWindow(br);
   }
 
+  static void close(BitReader br) throws IOException {
+    InputStream is = br.input;
+    br.input = null;
+    if (is != null) {
+      is.close();
+    }
+  }
+
   static void jumpToByteBoundry(BitReader br) {
     int padding = (64 - br.bitOffset) & 7;
     if (padding != 0) {

java/dec/BrotliInputStream.java

@@ -104,6 +104,14 @@ public class BrotliInputStream extends InputStream {
     }
   }
 
+  /**
+   * {@inheritDoc}
+   */
+  @Override
+  public void close() throws IOException {
+    State.close(state);
+  }
+
   /**
    * {@inheritDoc}
    */

java/dec/Decode.java

@@ -7,6 +7,7 @@
 package org.brotli.dec;
 
 import static org.brotli.dec.RunningState.BLOCK_START;
+import static org.brotli.dec.RunningState.CLOSED;
 import static org.brotli.dec.RunningState.COMPRESSED_BLOCK_START;
 import static org.brotli.dec.RunningState.COPY_LOOP;
 import static org.brotli.dec.RunningState.COPY_UNCOMPRESSED;
@@ -582,6 +583,9 @@ public final class Decode {
     if (state.runningState == UNINITIALIZED) {
       throw new IllegalStateException("Can't decompress until initialized");
     }
+    if (state.runningState == CLOSED) {
+      throw new IllegalStateException("Can't decompress after close");
+    }
     final BitReader br = state.br;
     int ringBufferMask = state.ringBufferSize - 1;
     byte[] ringBuffer = state.ringBuffer;

java/dec/RunningState.java

@@ -21,5 +21,6 @@ enum RunningState {
     COPY_WRAP_BUFFER,
     TRANSFORM,
     FINISHED,
+    CLOSED,
     WRITE
 }

java/dec/State.java

@@ -7,8 +7,10 @@
 package org.brotli.dec;
 
 import static org.brotli.dec.RunningState.BLOCK_START;
+import static org.brotli.dec.RunningState.CLOSED;
 import static org.brotli.dec.RunningState.UNINITIALIZED;
 
+import java.io.IOException;
 import java.io.InputStream;
 
 final class State {
@@ -93,7 +95,7 @@ final class State {
    */
   static void setInput(State state, InputStream input) {
     if (state.runningState != UNINITIALIZED) {
-      throw new IllegalStateException("State is MUST be uninitialized");
+      throw new IllegalStateException("State MUST be uninitialized");
     }
     BitReader.init(state.br, input);
     int windowBits = decodeWindowBits(state.br);
@@ -104,4 +106,15 @@ final class State {
     state.maxBackwardDistance = state.maxRingBufferSize - 16;
     state.runningState = BLOCK_START;
   }
+
+  static void close(State state) throws IOException {
+    if (state.runningState == UNINITIALIZED) {
+      throw new IllegalStateException("State MUST be initialized");
+    }
+    if (state.runningState == CLOSED) {
+      return;
+    }
+    state.runningState = CLOSED;
+    BitReader.close(state.br);
+  }
 }