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This commit is contained in:
huanghongxun
2015-11-17 12:51:04 +08:00
parent 39b6d68006
commit 159a992081
243 changed files with 2990 additions and 2836 deletions
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49
HMCLAPI/src/main/java/org/tukaani/xz/BlockInputStream.java
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@@ -6,7 +6,6 @@
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
package org.tukaani.xz;
import java.io.InputStream;
@@ -18,6 +17,7 @@ import org.tukaani.xz.common.DecoderUtil;
import org.tukaani.xz.check.Check;
class BlockInputStream extends InputStream {
private final DataInputStream inData;
private final CountingInputStream inCounted;
private InputStream filterChain;
@@ -35,7 +35,7 @@ class BlockInputStream extends InputStream {
public BlockInputStream(InputStream in, Check check, int memoryLimit,
long unpaddedSizeInIndex,
long uncompressedSizeInIndex)
throws IOException, IndexIndicatorException {
throws IOException, IndexIndicatorException {
this.check = check;
inData = new DataInputStream(in);
@@ -59,7 +59,7 @@ class BlockInputStream extends InputStream {
// Check for reserved bits in Block Flags.
if ((buf[1] & 0x3C) != 0)
throw new UnsupportedOptionsException(
"Unsupported options in XZ Block Header");
"Unsupported options in XZ Block Header");
// Memory for the Filter Flags field
int filterCount = (buf[1] & 0x03) + 1;
@@ -69,7 +69,7 @@ class BlockInputStream extends InputStream {
// Use a stream to parse the fields after the Block Flags field.
// Exclude the CRC32 field at the end.
ByteArrayInputStream bufStream = new ByteArrayInputStream(
buf, 2, headerSize - 6);
buf, 2, headerSize - 6);
try {
// Set the maximum valid compressed size. This is overriden
@@ -83,7 +83,7 @@ class BlockInputStream extends InputStream {
compressedSizeInHeader = DecoderUtil.decodeVLI(bufStream);
if (compressedSizeInHeader == 0
|| compressedSizeInHeader > compressedSizeLimit)
|| compressedSizeInHeader > compressedSizeLimit)
throw new CorruptedInputException();
compressedSizeLimit = compressedSizeInHeader;
@@ -102,7 +102,7 @@ class BlockInputStream extends InputStream {
if (filterPropsSize > bufStream.available())
throw new CorruptedInputException();
filterProps[i] = new byte[(int)filterPropsSize];
filterProps[i] = new byte[(int) filterPropsSize];
bufStream.read(filterProps[i]);
}
@@ -114,7 +114,7 @@ class BlockInputStream extends InputStream {
for (int i = bufStream.available(); i > 0; --i)
if (bufStream.read() != 0x00)
throw new UnsupportedOptionsException(
"Unsupported options in XZ Block Header");
"Unsupported options in XZ Block Header");
// Validate the Blcok Header against the Index when doing
// random access reading.
@@ -125,26 +125,26 @@ class BlockInputStream extends InputStream {
int headerAndCheckSize = headerSize + check.getSize();
if (headerAndCheckSize >= unpaddedSizeInIndex)
throw new CorruptedInputException(
"XZ Index does not match a Block Header");
"XZ Index does not match a Block Header");
// The compressed size calculated from Unpadded Size must
// match the value stored in the Compressed Size field in
// the Block Header.
long compressedSizeFromIndex
= unpaddedSizeInIndex - headerAndCheckSize;
= unpaddedSizeInIndex - headerAndCheckSize;
if (compressedSizeFromIndex > compressedSizeLimit
|| (compressedSizeInHeader != -1
&& compressedSizeInHeader != compressedSizeFromIndex))
|| (compressedSizeInHeader != -1
&& compressedSizeInHeader != compressedSizeFromIndex))
throw new CorruptedInputException(
"XZ Index does not match a Block Header");
"XZ Index does not match a Block Header");
// The uncompressed size stored in the Index must match
// the value stored in the Uncompressed Size field in
// the Block Header.
if (uncompressedSizeInHeader != -1
&& uncompressedSizeInHeader != uncompressedSizeInIndex)
&& uncompressedSizeInHeader != uncompressedSizeInIndex)
throw new CorruptedInputException(
"XZ Index does not match a Block Header");
"XZ Index does not match a Block Header");
// For further validation, pretend that the values from the Index
// were stored in the Block Header.
@@ -158,7 +158,7 @@ class BlockInputStream extends InputStream {
// supported by this decoder implementation.
FilterDecoder[] filters = new FilterDecoder[filterIDs.length];
for (int i = 0; i < filters.length; ++i) {
for (int i = 0; i < filters.length; ++i)
if (filterIDs[i] == LZMA2Coder.FILTER_ID)
filters[i] = new LZMA2Decoder(filterProps[i]);
@@ -170,8 +170,7 @@ class BlockInputStream extends InputStream {
else
throw new UnsupportedOptionsException(
"Unknown Filter ID " + filterIDs[i]);
}
"Unknown Filter ID " + filterIDs[i]);
RawCoder.validate(filters);
@@ -214,10 +213,10 @@ class BlockInputStream extends InputStream {
// Catch invalid values.
long compressedSize = inCounted.getSize();
if (compressedSize < 0
|| compressedSize > compressedSizeLimit
|| uncompressedSize < 0
|| (uncompressedSizeInHeader != -1
&& uncompressedSize > uncompressedSizeInHeader))
|| compressedSize > compressedSizeLimit
|| uncompressedSize < 0
|| (uncompressedSizeInHeader != -1
&& uncompressedSize > uncompressedSizeInHeader))
throw new CorruptedInputException();
// Check the Block integrity as soon as possible:
@@ -248,9 +247,9 @@ class BlockInputStream extends InputStream {
// Validate Compressed Size and Uncompressed Size if they were
// present in Block Header.
if ((compressedSizeInHeader != -1
&& compressedSizeInHeader != compressedSize)
|| (uncompressedSizeInHeader != -1
&& uncompressedSizeInHeader != uncompressedSize))
&& compressedSizeInHeader != compressedSize)
|| (uncompressedSizeInHeader != -1
&& uncompressedSizeInHeader != uncompressedSize))
throw new CorruptedInputException();
// Block Padding bytes must be zeros.
@@ -263,7 +262,7 @@ class BlockInputStream extends InputStream {
inData.readFully(storedCheck);
if (!Arrays.equals(check.finish(), storedCheck))
throw new CorruptedInputException("Integrity check ("
+ check.getName() + ") does not match");
+ check.getName() + ") does not match");
}
public int available() throws IOException {