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pull "InputStream" reference out of "pure" code

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PiperOrigin-RevId: 586390725
This commit is contained in:
Evgenii Kliuchnikov 2023-11-29 10:47:47 -08:00 committed by Copybara-Service
parent 0dff3e5b0d
commit 6ba678a7ce
8 changed files with 37 additions and 40 deletions
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4
java/org/brotli/dec/BitReader.java
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@ -68,7 +68,7 @@ final class BitReader {
s.halfOffset = 0;
while (bytesInBuffer < CAPACITY) {
final int spaceLeft = CAPACITY - bytesInBuffer;
final int len = Utils.readInput(s.input, s.byteBuffer, bytesInBuffer, spaceLeft);
final int len = Utils.readInput(s, s.byteBuffer, bytesInBuffer, spaceLeft);
// EOF is -1 in Java, but 0 in C#.
if (len <= 0) {
s.endOfStreamReached = 1;
@ -255,7 +255,7 @@ final class BitReader {
// Now it is possible to copy bytes directly.
while (length > 0) {
final int len = Utils.readInput(s.input, data, offset, length);
final int len = Utils.readInput(s, data, offset, length);
if (len == -1) {
throw new BrotliRuntimeException("Unexpected end of input");
}

6
java/org/brotli/dec/BitReaderTest.java
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@ -22,7 +22,8 @@ public class BitReaderTest {
@Test
public void testReadAfterEos() {
State reader = new State();
Decode.initState(reader, new ByteArrayInputStream(new byte[1]));
reader.input = new ByteArrayInputStream(new byte[1]);
Decode.initState(reader);
BitReader.readBits(reader, 9);
try {
BitReader.checkHealth(reader, 0);
@ -36,7 +37,8 @@ public class BitReaderTest {
@Test
public void testAccumulatorUnderflowDetected() {
State reader = new State();
Decode.initState(reader, new ByteArrayInputStream(new byte[8]));
reader.input = new ByteArrayInputStream(new byte[8]);
Decode.initState(reader);
// 65 bits is enough for both 32 and 64 bit systems.
BitReader.readBits(reader, 13);
BitReader.readBits(reader, 13);

3
java/org/brotli/dec/BrotliInputStream.java
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@ -86,7 +86,8 @@ public class BrotliInputStream extends InputStream {
this.remainingBufferBytes = 0;
this.bufferOffset = 0;
try {
Decode.initState(state, source);
state.input = source;
Decode.initState(state);
} catch (BrotliRuntimeException ex) {
throw new IOException("Brotli decoder initialization failed", ex);
}

9
java/org/brotli/dec/Decode.java
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@ -7,7 +7,6 @@
package org.brotli.dec;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
/**
@ -290,7 +289,7 @@ final class Decode {
* @param s uninitialized state without associated input
* @param input compressed data source
*/
static void initState(State s, InputStream input) {
static void initState(State s) {
if (s.runningState != UNINITIALIZED) {
throw new IllegalStateException("State MUST be uninitialized");
}
@ -302,7 +301,6 @@ final class Decode {
calculateDistanceAlphabetLimit(MAX_ALLOWED_DISTANCE, 3, 15 << 3);
s.distExtraBits = new byte[maxDistanceAlphabetLimit];
s.distOffset = new int[maxDistanceAlphabetLimit];
s.input = input;
BitReader.initBitReader(s);
s.runningState = INITIALIZED;
}
@ -315,10 +313,7 @@ final class Decode {
return;
}
s.runningState = CLOSED;
if (s.input != null) {
Utils.closeInput(s.input);
s.input = null;
}
Utils.closeInput(s);
}
/**

12
java/org/brotli/dec/Utils.java
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@ -7,7 +7,6 @@
package org.brotli.dec;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.Buffer;
import java.nio.ByteBuffer;
@ -67,16 +66,19 @@ final class Utils {
System.arraycopy(bytes, start, bytes, target, end - start);
}
static int readInput(InputStream src, byte[] dst, int offset, int length) {
static int readInput(State s, byte[] dst, int offset, int length) {
try {
return src.read(dst, offset, length);
return s.input.read(dst, offset, length);
} catch (IOException e) {
throw new BrotliRuntimeException("Failed to read input", e);
}
}
static void closeInput(InputStream src) throws IOException {
src.close();
static void closeInput(State s) throws IOException {
if (s.input != null) {
s.input.close();
s.input = null;
}
}
static byte[] toUsAsciiBytes(String src) {

22
js/decode.js
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@ -193,10 +193,9 @@ let makeBrotliDecode = () => {
}
/**
* @param {!State} s
* @param {!InputStream} input
* @return {void}
*/
function initState(s, input) {
function initState(s) {
if (s.runningState !== 0) {
throw new Error("State MUST be uninitialized");
}
@ -206,7 +205,6 @@ let makeBrotliDecode = () => {
const /** @type {number} */ maxDistanceAlphabetLimit = calculateDistanceAlphabetLimit(0x7FFFFFFC, 3, 120);
s.distExtraBits = new Int8Array(maxDistanceAlphabetLimit);
s.distOffset = new Int32Array(maxDistanceAlphabetLimit);
s.input = input;
initBitReader(s);
s.runningState = 1;
}
@ -222,9 +220,7 @@ let makeBrotliDecode = () => {
return;
}
s.runningState = 11;
if (s.input !== null) {
s.input = null;
}
s.input = null;
}
/**
* @param {!State} s
@ -1666,7 +1662,7 @@ let makeBrotliDecode = () => {
s.halfOffset = 0;
while (bytesInBuffer < 4096) {
const /** @type {number} */ spaceLeft = 4096 - bytesInBuffer;
const /** @type {number} */ len = readInput(s.input, s.byteBuffer, bytesInBuffer, spaceLeft);
const /** @type {number} */ len = readInput(s, s.byteBuffer, bytesInBuffer, spaceLeft);
if (len <= 0) {
s.endOfStreamReached = 1;
s.tailBytes = bytesInBuffer;
@ -1820,7 +1816,7 @@ let makeBrotliDecode = () => {
return;
}
while (length > 0) {
const /** @type {number} */ len = readInput(s.input, data, offset, length);
const /** @type {number} */ len = readInput(s, data, offset, length);
if (len === -1) {
throw new Error("Unexpected end of input");
}
@ -2151,16 +2147,17 @@ let makeBrotliDecode = () => {
}
/**
* @param {?InputStream} src
* @param {!State} s
* @param {!Int8Array} dst
* @param {number} offset
* @param {number} length
* @return {number}
*/
function readInput(src, dst, offset, length) {
if (src === null) {
function readInput(s, dst, offset, length) {
if (s.input === null) {
return -1;
}
const /** @type {!InputStream} */ src = s.input;
let /** @type {number} */ end = Math.min(src.offset + length, src.data.length);
let /** @type {number} */ bytesRead = end - src.offset;
dst.set(src.data.subarray(src.offset, end), offset);
@ -2192,7 +2189,8 @@ let makeBrotliDecode = () => {
*/
function decode(bytes, options) {
let /** @type {!State} */ s = new State();
initState(s, new InputStream(bytes));
s.input = new InputStream(bytes);
initState(s);
if (options) {
let customDictionary =
/** @type {?Int8Array} */ (options["customDictionary"]);

2
js/decode.min.js vendored
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File diff suppressed because one or more lines are too long

19
js/decode.ts
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@ -136,7 +136,7 @@ function attachDictionaryChunk(s: State, data: Int8Array): void {
s.cdTotalSize += data.length;
s.cdChunkOffsets[s.cdNumChunks] = s.cdTotalSize;
}
function initState(s: State, input: InputStream): void {
function initState(s: State): void {
if (s.runningState !== 0) {
throw new Error("State MUST be uninitialized");
}
@ -146,7 +146,6 @@ function initState(s: State, input: InputStream): void {
const maxDistanceAlphabetLimit: number = calculateDistanceAlphabetLimit(0x7FFFFFFC, 3, 120);
s.distExtraBits = new Int8Array(maxDistanceAlphabetLimit);
s.distOffset = new Int32Array(maxDistanceAlphabetLimit);
s.input = input;
initBitReader(s);
s.runningState = 1;
}
@ -158,9 +157,7 @@ function close(s: State): void {
return;
}
s.runningState = 11;
if (s.input !== null) {
s.input = null;
}
s.input = null;
}
function decodeVarLenUnsignedByte(s: State): number {
if (s.bitOffset >= 16) {
@ -1398,7 +1395,7 @@ function doReadMoreInput(s: State): void {
s.halfOffset = 0;
while (bytesInBuffer < 4096) {
const spaceLeft: number = 4096 - bytesInBuffer;
const len: number = readInput(s.input, s.byteBuffer, bytesInBuffer, spaceLeft);
const len: number = readInput(s, s.byteBuffer, bytesInBuffer, spaceLeft);
if (len <= 0) {
s.endOfStreamReached = 1;
s.tailBytes = bytesInBuffer;
@ -1510,7 +1507,7 @@ function copyRawBytes(s: State, data: Int8Array, offset: number, length: number)
return;
}
while (length > 0) {
const len: number = readInput(s.input, data, offset, length);
const len: number = readInput(s, data, offset, length);
if (len === -1) {
throw new Error("Unexpected end of input");
}
@ -1728,10 +1725,11 @@ function valueOf(x: number): string {
return x.toString();
}
function readInput(src: InputStream|null, dst: Int8Array, offset: number, length: number): number {
if (src === null) {
function readInput(s: State, dst: Int8Array, offset: number, length: number): number {
if (s.input === null) {
return -1;
}
const src: InputStream = s.input;
const end: number = Math.min(src.offset + length, src.data.length);
const bytesRead: number = end - src.offset;
dst.set(src.data.subarray(src.offset, end), offset);
@ -1757,7 +1755,8 @@ type ByteBuffer = Int8Array;
export function brotliDecode(
bytes: Int8Array, options?: BrotliDecodeOptions): Int8Array {
const s = new State();
initState(s, new InputStream(bytes));
s.input = new InputStream(bytes);
initState(s);
if (options) {
const customDictionary: Int8Array|null = options.customDictionary;
if (customDictionary) attachDictionaryChunk(s, customDictionary);