org.jfree.xml
Class ParserUtil

java.lang.Object
  org.jfree.xml.ParserUtil

public class ParserUtil
extends Object

Basic helper functions to ease up the process of parsing.

Author:

Thomas Morgner

Constructor Summary

ParserUtil()

Method Summary

static Rectangle2D	getElementPosition(Attributes atts) Parses an element position.
static boolean	parseBoolean(String text, boolean defaultVal) Parses a boolean.
static Color	parseColor(String color) Parses a color entry.
static Color	parseColor(String color, Color defaultValue) Parses a color entry.
static float	parseFloat(String text, float defaultVal) Parses the string text into an float.
static float	parseFloat(String text, String message) Parses the string text into an float.
static int	parseInt(String text, int defaultVal) Parses an integer.
static int	parseInt(String text, String message) Parses the string text into an int.
static float	parseRelativeFloat(String value, String exceptionMessage) Parses a position of an element.
static String	parseString(String text, String defaultVal) Parses a string.
static Stroke	parseStroke(String weight) Creates a basic stroke given the width contained as float in the given string.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParserUtil

public ParserUtil()

Method Detail

parseInt

public static int parseInt(String text,
                           String message)
                    throws SAXException

Parses the string text into an int. If text is null or does not contain a parsable value, the message given in message is used to throw a SAXException.

Parameters:

text - the text to parse.

message - the error message if parsing fails.

Returns:

the int value.

Throws:

SAXException - if there is a problem with the parsing.

parseInt

public static int parseInt(String text,
                           int defaultVal)

Parses an integer.

Parameters:

text - the text to parse.

defaultVal - the default value.

Returns:

the integer.

parseFloat

public static float parseFloat(String text,
                               String message)
                        throws SAXException

Parses the string text into an float. If text is null or does not contain a parsable value, the message given in message is used to throw a SAXException.

Parameters:

text - the text to parse.

message - the error message if parsing fails.

Returns:

the float value.

Throws:

SAXException - if there is a problem with the parsing.

parseFloat

public static float parseFloat(String text,
                               float defaultVal)

Parses the string text into an float. If text is null or does not contain a parsable value, the message given in message is used to throw a SAXException.

Parameters:

text - the text to parse.

defaultVal - the defaultValue returned if parsing fails.

Returns:

the float value.

parseBoolean

public static boolean parseBoolean(String text,
                                   boolean defaultVal)

Parses a boolean. If the string text contains the value of "true", the true value is returned, else false is returned.

Parameters:

text - the text to parse.

defaultVal - the default value.

Returns:

a boolean.

parseString

public static String parseString(String text,
                                 String defaultVal)

Parses a string. If the text is null, defaultval is returned.

Parameters:

text - the text to parse.

defaultVal - the default value.

Returns:

a string.

parseStroke

public static Stroke parseStroke(String weight)

Creates a basic stroke given the width contained as float in the given string. If the string could not be parsed into a float, a basic stroke with the width of 1 is returned.

Parameters:

weight - a string containing a number (the stroke weight).

Returns:

the stroke.

parseColor

public static Color parseColor(String color)

Parses a color entry. If the entry is in hexadecimal or ocal notation, the color is created using Color.decode(). If the string denotes a constant name of on of the color constants defined in java.awt.Color, this constant is used.

As fallback the color black is returned if no color can be parsed.

Parameters:

color - the color (as a string).

Returns:

the paint.

parseColor

public static Color parseColor(String color,
                               Color defaultValue)

Parses a color entry. If the entry is in hexadecimal or octal notation, the color is created using Color.decode(). If the string denotes a constant name of one of the color constants defined in java.awt.Color, this constant is used.

As fallback the supplied default value is returned if no color can be parsed.

Parameters:

color - the color (as a string).

defaultValue - the default value (returned if no color can be parsed).

Returns:

the paint.

parseRelativeFloat

public static float parseRelativeFloat(String value,
                                       String exceptionMessage)
                                throws SAXException

Parses a position of an element. If a relative postion is given, the returnvalue is a negative number between 0 and -100.

Parameters:

value - the value.

exceptionMessage - the exception message.

Returns:

the float value.

Throws:

SAXException - if there is a problem parsing the string.

getElementPosition

public static Rectangle2D getElementPosition(Attributes atts)
                                      throws SAXException

Parses an element position. The position is stored in the attributes "x", "y", "width" and "height". The attributes are allowed to have relative notion.

Parameters:

atts - the attributes.

Returns:

the element position.

Throws:

SAXException - if there is a problem getting the element position.