uk.ac.starlink.table.formats

Class AsciiTableWriter

java.lang.Object

uk.ac.starlink.table.formats.DocumentedStreamStarTableWriter

uk.ac.starlink.table.formats.AbstractTextTableWriter

uk.ac.starlink.table.formats.AsciiTableWriter

All Implemented Interfaces:

Documented, DocumentedIOHandler, StarTableWriter

public class AsciiTableWriter
extends AbstractTextTableWriter

A StarTableWriter which outputs text to a simple format machine-readable text file. This format is suitable for reading using AsciiStarTable and AsciiTableBuilder.

Since:

29 Mar 2004

Constructor Summary

Constructors

Constructor and Description
AsciiTableWriter()

Method Summary

Modifier and Type	Method and Description
boolean	docIncludesExample() Indicates whether the serialization of some (short) example table should be added to the user documentation for this handler.
protected java.lang.String	formatValue(java.lang.Object val, ValueInfo vinfo, int width) Formats a data value for output.
java.lang.String	getFormatName() Returns "ascii".
java.lang.String	getXmlDescription() Returns user-directed documentation in XML format.
protected void	printColumnHeads(java.io.OutputStream strm, int[] colwidths, ColumnInfo[] cinfos) Outputs headings for the table columns.
protected void	printLine(java.io.OutputStream strm, int[] colwidths, java.lang.String[] data) Outputs a line of table data.
protected void	printParam(java.io.OutputStream strm, java.lang.String name, java.lang.String value, java.lang.Class<?> clazz) Outputs a parameter and its value.
protected void	printSeparator(java.io.OutputStream strm, int[] colwidths) Outputs a decorative separator line, of the sort you might find between the column headings and the table data.

Methods inherited from class uk.ac.starlink.table.formats.AbstractTextTableWriter

getBytes, getMaximumParameterLength, getMaxWidth, getMimeType, getMinNameWidth, getSampledRows, getWriteParameters, setMaximumParameterLength, setMaxWidth, setSampledRows, setWriteParameters, writeStarTable

Methods inherited from class uk.ac.starlink.table.formats.DocumentedStreamStarTableWriter

getExtensions, looksLikeFile, writeStarTable

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.starlink.table.formats.DocumentedIOHandler

matchesExtension, readText, toLink

Constructor Detail

AsciiTableWriter

public AsciiTableWriter()

Method Detail

formatValue

protected java.lang.String formatValue(java.lang.Object val,
                                       ValueInfo vinfo,
                                       int width)

Description copied from class: AbstractTextTableWriter

Formats a data value for output.

Specified by:

formatValue in class AbstractTextTableWriter

Parameters:

val - the value

vinfo - the metadata object describing val's type

width - maximum preferred width into which the value should be formatted

Returns:

formatted string meaning value, preferably no longer than width characters

getFormatName

public java.lang.String getFormatName()

Returns "ascii".

Specified by:

getFormatName in interface StarTableWriter

Overrides:

getFormatName in class AbstractTextTableWriter

Returns:

output format

docIncludesExample

public boolean docIncludesExample()

Description copied from interface: DocumentedIOHandler

Indicates whether the serialization of some (short) example table should be added to the user documentation for this handler. Binary formats, or instances for which the Documented.getXmlDescription() method already includes some example output, should return false.

Returns:

true if the user documentation would benefit from the addition of an example serialization

getXmlDescription

public java.lang.String getXmlDescription()

Description copied from interface: Documented

Returns user-directed documentation in XML format.

The output should be a sequence of one or more <P> elements, using XHTML-like XML. Since rendering may be done in a number of contexts however, use of the full range of XHTML elements is discouraged. Where possible, the content should stick to simple markup such as the elements P, A, UL, OL, LI, DL, DT, DD EM, STRONG, I, B, CODE, TT, PRE.

Returns:

XML description of this object

printSeparator

protected void printSeparator(java.io.OutputStream strm,
                              int[] colwidths)

Description copied from class: AbstractTextTableWriter

Outputs a decorative separator line, of the sort you might find between the column headings and the table data.

Specified by:

printSeparator in class AbstractTextTableWriter

Parameters:

strm - stream to write into

colwidths - column widths in characters

printLine

protected void printLine(java.io.OutputStream strm,
                         int[] colwidths,
                         java.lang.String[] data)
                  throws java.io.IOException

Description copied from class: AbstractTextTableWriter

Outputs a line of table data.

Specified by:

printLine in class AbstractTextTableWriter

Parameters:

strm - stream to write into

colwidths - column widths in characters

data - array of strings to be output, one per column

Throws:

java.io.IOException

printColumnHeads

protected void printColumnHeads(java.io.OutputStream strm,
                                int[] colwidths,
                                ColumnInfo[] cinfos)
                         throws java.io.IOException

Description copied from class: AbstractTextTableWriter

Outputs headings for the table columns.

Specified by:

printColumnHeads in class AbstractTextTableWriter

Parameters:

strm - stream to write into

colwidths - column widths in characters

cinfos - array of column headings

Throws:

java.io.IOException

printParam

protected void printParam(java.io.OutputStream strm,
                          java.lang.String name,
                          java.lang.String value,
                          java.lang.Class<?> clazz)
                   throws java.io.IOException

Description copied from class: AbstractTextTableWriter

Outputs a parameter and its value.

Specified by:

printParam in class AbstractTextTableWriter

Parameters:

strm - stream to write into

name - parameter name

value - formatted parameter value

clazz - type of value

Throws:

java.io.IOException