Package org.evolvis.tartools.csvfile

Class CSVFileWriter

java.lang.Object

org.evolvis.tartools.csvfile.CSVFile

org.evolvis.tartools.csvfile.CSVFileWriter

Direct Known Subclasses:

SSVFileWriter

public class CSVFileWriter
extends CSVFile

CSVFileWriter is a class derived from CSVFile used to format some fields into a new CSV file. As of CSVFile 2.0, this will handle escaping fields whose contents contain the field separator, text qualifier, carriage return and/or line feed properly.

Author:

Fabrizio Fazzino

Field Summary

Fields

Modifier and Type	Field	Description
protected final PrintWriter	out	The print writer linked to the CSV file to be written.
protected String	rowSeparator	Separator between rows (default: LF)

Fields inherited from class org.evolvis.tartools.csvfile.CSVFile

CR, CRLF, DEFAULT_FIELD_SEPARATOR, DEFAULT_TEXT_QUALIFIER, fieldSeparator, LF, textQualifier

Constructor Summary

Constructors

Constructor	Description
CSVFileWriter(OutputStream stream)	CSVFileWriter constructor with default values.
CSVFileWriter(OutputStream stream, char sep, char qual)	CSVFileWriter constructor with given field separator and text qualifier.
CSVFileWriter(Writer writer)	CSVFileWriter constructor with default values.
CSVFileWriter(Writer writer, char sep, char qual)	CSVFileWriter constructor with given field separator and text qualifier.
CSVFileWriter(String outputFileName)	CSVFileWriter constructor just needing the name of the CSV file that will be written.
CSVFileWriter(String outputFileName, char sep)	CSVFileWriter constructor with a given field separator.
CSVFileWriter(String outputFileName, char sep, char qual)	CSVFileWriter constructor with given field separator and text qualifier.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the output CSV file.
String	getRowSeparator()	Gets the current row separator
protected String	prepareField(Object field)	Prepares a field for output by stringifying the passed object and quoting it.
void	setRowSeparator(String separator)	Sets the row separator to an arbitrary string.
void	writeFields(Iterable<?> fields)	Joins the fields and writes them as a new line to the CSV file.

Methods inherited from class org.evolvis.tartools.csvfile.CSVFile

getFieldSeparator, getTextQualifier, setFieldSeparator, setTextQualifier

Methods inherited from class java.lang.Object

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

Field Details

out

protected final PrintWriter out

The print writer linked to the CSV file to be written.

rowSeparator

protected String rowSeparator

Separator between rows (default: LF)

Constructor Details

CSVFileWriter

public CSVFileWriter(String outputFileName)
              throws IOException

CSVFileWriter constructor just needing the name of the CSV file that will be written.

Parameters:

outputFileName - The name of the CSV file to be opened for writing

Throws:

IOException - if an error occurs while creating the file

CSVFileWriter

public CSVFileWriter(Writer writer)

CSVFileWriter constructor with default values.

Parameters:

writer - The Writer to be opened for writing

CSVFileWriter

public CSVFileWriter(OutputStream stream)

CSVFileWriter constructor with default values. The CSV file will be written in UTF-8 encoding.

Parameters:

stream - The OutputStream to be opened for writing

CSVFileWriter

public CSVFileWriter(String outputFileName,
 char sep)
              throws IOException

CSVFileWriter constructor with a given field separator.

Parameters:

outputFileName - The name of the CSV file to be opened for writing

sep - The field separator to be used; overwrites the default one

Throws:

IOException - if an error occurs while creating the file

CSVFileWriter

public CSVFileWriter(String outputFileName,
 char sep,
 char qual)
              throws IOException

CSVFileWriter constructor with given field separator and text qualifier.

Parameters:

outputFileName - The name of the CSV file to be opened for writing

sep - The field separator to be used; overwrites the default one

qual - The text qualifier to be used; overwrites the default one

Throws:

IOException - if an error occurs while creating the file

CSVFileWriter

public CSVFileWriter(OutputStream stream,
 char sep,
 char qual)

CSVFileWriter constructor with given field separator and text qualifier. The CSV file will be written in UTF-8 encoding.

Parameters:

stream - The OutputStream to be opened for writing

sep - The field separator to be used; overwrites the default one

qual - The text qualifier to be used; overwrites the default one

CSVFileWriter

public CSVFileWriter(Writer writer,
 char sep,
 char qual)

CSVFileWriter constructor with given field separator and text qualifier.

Parameters:

writer - The Writer to be opened for writing

sep - The field separator to be used; overwrites the default one

qual - The text qualifier to be used; overwrites the default one

Method Details

getRowSeparator

public String getRowSeparator()

Gets the current row separator

Returns:

row separator (CR, LF or CRLF) as String

setRowSeparator

public void setRowSeparator(String separator)

Sets the row separator to an arbitrary string. However, setting it to anything other than CR, LF, or a combination of these will be ignored by the field escape code, and is therefore undefined. Setting it to System.lineSeparator() might be sensible.

Parameters:

separator - to use (default: "\n")

close

public void close()

Closes the output CSV file.

writeFields

public void writeFields(Iterable<?> fields)

Joins the fields and writes them as a new line to the CSV file.

Parameters:

fields - The list of strings containing the fields

prepareField

protected String prepareField(Object field)

Prepares a field for output by stringifying the passed object and quoting it.

Parameters:

field - to prepare

Returns:

quoted string