Class CsvParserBootstrapper

java.lang.Object

tools.jackson.dataformat.csv.impl.CsvParserBootstrapper

public final class CsvParserBootstrapper
extends Object

This class is used to determine the encoding of byte stream that is to contain CSV document. Since there is no real specification for how this should work with CSV, it will be based on rules used with JSON (which themselves are similar to those used with XML); main points are to check for BOM first, then look for multi-byted fixed-length encodings (UTF-16, UTF-32). And finally, if neither found, must decide between most likely alternatives, UTF-8 and Latin-1.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	_bigEndian
protected int	_bytesPerChar
protected final tools.jackson.core.io.IOContext	_context
protected final InputStream	_in
protected final byte[]	_inputBuffer
private int	_inputEnd
protected int	_inputProcessed	Current number of input units (bytes or chars) that were processed in previous blocks, before contents of current input buffer.
private int	_inputPtr
(package private) static final byte	UTF8_BOM_1
(package private) static final byte	UTF8_BOM_2
(package private) static final byte	UTF8_BOM_3

Constructor Summary

Constructors

Constructor	Description
CsvParserBootstrapper(tools.jackson.core.io.IOContext ctxt, byte[] inputBuffer, int inputStart, int inputLen)
CsvParserBootstrapper(tools.jackson.core.io.IOContext ctxt, InputStream in)

Method Summary

Modifier and Type	Method	Description
private static tools.jackson.core.JacksonException	_createIOFailure(String msg)
private Reader	_createReader(tools.jackson.core.JsonEncoding enc, boolean autoClose)
private static tools.jackson.core.JacksonException	_wrapIOFailure(IOException e)
private boolean	checkUTF16(int i16)
private boolean	checkUTF32(int quad)
CsvParser	constructParser(tools.jackson.core.ObjectReadContext readCtxt, int parserFeatures, int csvFeatures, CsvSchema schema)
protected boolean	ensureLoaded(int minimum)
private boolean	handleBOM(int quad)
private void	reportWeirdUCS4(String type)

Methods inherited from class Object

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

Field Details

UTF8_BOM_1

static final byte UTF8_BOM_1

See Also:

• Constant Field Values

UTF8_BOM_2

static final byte UTF8_BOM_2

See Also:

• Constant Field Values

UTF8_BOM_3

static final byte UTF8_BOM_3

See Also:

• Constant Field Values

_context

protected final tools.jackson.core.io.IOContext _context

_in

protected final InputStream _in

_inputBuffer

protected final byte[] _inputBuffer

_inputPtr

private int _inputPtr

_inputEnd

private int _inputEnd

_inputProcessed

protected int _inputProcessed

Current number of input units (bytes or chars) that were processed in previous blocks, before contents of current input buffer.

Note: includes possible BOMs, if those were part of the input.

_bigEndian

protected boolean _bigEndian

_bytesPerChar

protected int _bytesPerChar

Constructor Details

CsvParserBootstrapper

public CsvParserBootstrapper(tools.jackson.core.io.IOContext ctxt,
 InputStream in)

CsvParserBootstrapper

public CsvParserBootstrapper(tools.jackson.core.io.IOContext ctxt,
 byte[] inputBuffer,
 int inputStart,
 int inputLen)

Method Details

constructParser

public CsvParser constructParser(tools.jackson.core.ObjectReadContext readCtxt,
 int parserFeatures,
 int csvFeatures,
 CsvSchema schema)
                          throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException

_createReader

private Reader _createReader(tools.jackson.core.JsonEncoding enc,
 boolean autoClose)
                      throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException

handleBOM

private boolean handleBOM(int quad)
                   throws tools.jackson.core.JacksonException

Returns:

True if a BOM was successfully found, and encoding thereby recognized.

Throws:

tools.jackson.core.JacksonException

checkUTF32

private boolean checkUTF32(int quad)
                    throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException

checkUTF16

private boolean checkUTF16(int i16)

reportWeirdUCS4

private void reportWeirdUCS4(String type)
                      throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException

ensureLoaded

protected boolean ensureLoaded(int minimum)
                        throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException

_createIOFailure

private static tools.jackson.core.JacksonException _createIOFailure(String msg)
                                                             throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException

_wrapIOFailure

private static tools.jackson.core.JacksonException _wrapIOFailure(IOException e)
                                                           throws tools.jackson.core.JacksonException

Throws:

tools.jackson.core.JacksonException