Package com.google.protobuf

Class Utf8.SafeProcessor

java.lang.Object

com.google.protobuf.Utf8.Processor

com.google.protobuf.Utf8.SafeProcessor

Enclosing class:

Utf8

static final class Utf8.SafeProcessor
extends Utf8.Processor

Utf8.Processor implementation that does not use any sun.misc.Unsafe methods.

Constructor Summary

Constructors

Constructor	Description
SafeProcessor()

Method Summary

Modifier and Type	Method	Description
(package private) java.lang.String	decodeUtf8(byte[] bytes, int index, int size)	Decodes the given byte array slice into a String.
(package private) java.lang.String	decodeUtf8Direct(java.nio.ByteBuffer buffer, int index, int size)	Decodes direct ByteBuffer instances into String.
(package private) int	encodeUtf8(java.lang.String in, byte[] out, int offset, int length)	Encodes an input character sequence (in) to UTF-8 in the target array (out).
protected void	encodeUtf8Internal(java.lang.String in, java.nio.ByteBuffer out)	Encodes the input character sequence to a direct ByteBuffer instance.
boolean	isValidUtf8(byte[] bytes, int index, int limit)	Returns true if the given byte array slice is a well-formed UTF-8 byte sequence.
private static boolean	isValidUtf8NonAscii(byte[] bytes, int index, int limit)

Methods inherited from class com.google.protobuf.Utf8.Processor

decodeUtf8, decodeUtf8Default, encodeUtf8, encodeUtf8Naive, encodeUtf8Naive, isValidUtf8BufferDefault, isValidUtf8BufferDirect

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SafeProcessor

SafeProcessor()

Method Detail

isValidUtf8

public boolean isValidUtf8(byte[] bytes,
                           int index,
                           int limit)

Description copied from class: Utf8.Processor

Returns true if the given byte array slice is a well-formed UTF-8 byte sequence. The range of bytes to be checked extends from index index, inclusive, to limit, exclusive.

Specified by:

isValidUtf8 in class Utf8.Processor

decodeUtf8

java.lang.String decodeUtf8(byte[] bytes,
                            int index,
                            int size)
                     throws InvalidProtocolBufferException

Description copied from class: Utf8.Processor

Decodes the given byte array slice into a String.

Specified by:

decodeUtf8 in class Utf8.Processor

Throws:

InvalidProtocolBufferException - if the byte array slice is not valid UTF-8

decodeUtf8Direct

java.lang.String decodeUtf8Direct(java.nio.ByteBuffer buffer,
                                  int index,
                                  int size)
                           throws InvalidProtocolBufferException

Description copied from class: Utf8.Processor

Decodes direct ByteBuffer instances into String.

Specified by:

decodeUtf8Direct in class Utf8.Processor

Throws:

InvalidProtocolBufferException

encodeUtf8

int encodeUtf8(java.lang.String in,
               byte[] out,
               int offset,
               int length)

Description copied from class: Utf8.Processor

Encodes an input character sequence (in) to UTF-8 in the target array (out). For a string, this method is functionally identical to

 byte[] a = string.getBytes(UTF_8);
 System.arraycopy(a, 0, bytes, offset, a.length);
 return offset + a.length;
 

but may be implemented differently for efficiency purposes.

Matching String.getBytes(UTF_8) this replaces unpaired surrogates with a replacement character.

To ensure sufficient space in the output buffer, either call Utf8.encodedLength(java.lang.String) to compute the exact amount needed, or leave room for Utf8.MAX_BYTES_PER_CHAR * sequence.length(), which is the largest possible number of bytes that any input can be encoded to.

Specified by:

encodeUtf8 in class Utf8.Processor

Parameters:

in - the input character sequence to be encoded

out - the target array

offset - the starting offset in bytes to start writing at

length - the length of the bytes, starting from offset

Returns:

the new offset, equivalent to offset + Utf8.encodedLength(sequence)

encodeUtf8Internal

protected void encodeUtf8Internal(java.lang.String in,
                                  java.nio.ByteBuffer out)

Description copied from class: Utf8.Processor

Encodes the input character sequence to a direct ByteBuffer instance.

Specified by:

encodeUtf8Internal in class Utf8.Processor

isValidUtf8NonAscii

private static boolean isValidUtf8NonAscii(byte[] bytes,
                                           int index,
                                           int limit)