com.fasterxml.jackson.dataformat.csv.impl
Class CsvParserBootstrapper

java.lang.Object
  com.fasterxml.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

protected boolean	_bigEndian
protected int	_bytesPerChar
protected com.fasterxml.jackson.core.io.IOContext	_context
protected InputStream	_in
protected byte[]	_inputBuffer
protected int	_inputProcessed Current number of input units (bytes or chars) that were processed in previous blocks, before contents of current input buffer.

Constructor Summary

CsvParserBootstrapper(com.fasterxml.jackson.core.io.IOContext ctxt, char quoteChar, byte[] inputBuffer, int inputStart, int inputLen)

CsvParserBootstrapper(com.fasterxml.jackson.core.io.IOContext ctxt, char quoteChar, InputStream in)

Method Summary

CsvParser	constructParser(int baseFeatures, int csvFeatures, com.fasterxml.jackson.core.ObjectCodec codec)
Reader	constructReader()
com.fasterxml.jackson.core.JsonEncoding	detectEncoding() Method that should be called after constructing an instace.
protected boolean	ensureLoaded(int minimum)
static com.fasterxml.jackson.core.format.MatchStrength	hasCSVFormat(com.fasterxml.jackson.core.format.InputAccessor acc, char quoteChar, char separatorChar) Current implementation is not as thorough as one used by other data formats like JSON.

Methods inherited from class java.lang.Object

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

Field Detail

_context

protected final com.fasterxml.jackson.core.io.IOContext _context

_in

protected final InputStream _in

_inputBuffer

protected final byte[] _inputBuffer

_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 Detail

CsvParserBootstrapper

public CsvParserBootstrapper(com.fasterxml.jackson.core.io.IOContext ctxt,
                             char quoteChar,
                             InputStream in)

CsvParserBootstrapper

public CsvParserBootstrapper(com.fasterxml.jackson.core.io.IOContext ctxt,
                             char quoteChar,
                             byte[] inputBuffer,
                             int inputStart,
                             int inputLen)

Method Detail

detectEncoding

public com.fasterxml.jackson.core.JsonEncoding detectEncoding()
                                                       throws IOException,
                                                              com.fasterxml.jackson.core.JsonParseException

Method that should be called after constructing an instace. It will figure out encoding that content uses, to allow for instantiating a proper scanner object.

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

constructReader

public Reader constructReader()
                       throws IOException

Throws:

IOException

constructParser

public CsvParser constructParser(int baseFeatures,
                                 int csvFeatures,
                                 com.fasterxml.jackson.core.ObjectCodec codec)
                          throws IOException,
                                 com.fasterxml.jackson.core.JsonParseException

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

hasCSVFormat

public static com.fasterxml.jackson.core.format.MatchStrength hasCSVFormat(com.fasterxml.jackson.core.format.InputAccessor acc,
                                                                           char quoteChar,
                                                                           char separatorChar)
                                                                    throws IOException

Current implementation is not as thorough as one used by other data formats like JSON. But it should work, for now, and can be improved as necessary.

Throws:

IOException

ensureLoaded

protected boolean ensureLoaded(int minimum)
                        throws IOException

Throws:

IOException