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.
*
* @param text the text to parse.
* @param message the error message if parsing fails.
*
* @return the int value.
*
* @throws SAXException if there is a problem with the parsing.
*/
public static int parseInt(final String text, final String message) throws SAXException {
if (text == null) {
throw new SAXException(message);
}
try {
return Integer.parseInt(text);
}
catch (NumberFormatException nfe) {
throw new SAXException("NumberFormatError: " + message);
}
}
/**
* Parses an integer.
*
* @param text the text to parse.
* @param defaultVal the default value.
*
* @return the integer.
*/
public static int parseInt(final String text, final int defaultVal) {
if (text == null) {
return defaultVal;
}
try {
return Integer.parseInt(text);
}
catch (NumberFormatException nfe) {
return 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.
*
* @param text the text to parse.
* @param message the error message if parsing fails.
*
* @return the float value.
*
* @throws SAXException if there is a problem with the parsing.
*/
public static float parseFloat(final String text, final String message) throws SAXException {
if (text == null) {
throw new SAXException(message);
}
try {
return Float.parseFloat(text);
}
catch (NumberFormatException nfe) {
throw new SAXException("NumberFormatError: " + message);
}
}
/**
* 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.
*
* @param text the text to parse.
* @param defaultVal the defaultValue returned if parsing fails.
*
* @return the float value.
*/
public static float parseFloat(final String text, final float defaultVal) {
if (text == null) {
return defaultVal;
}
try {
return Float.parseFloat(text);
}
catch (NumberFormatException nfe) {
return defaultVal;
}
}
/**
* Parses a boolean. If the string text contains the value of "true", the
* true value is returned, else false is returned.
*
* @param text the text to parse.
* @param defaultVal the default value.
*
* @return a boolean.
*/
public static boolean parseBoolean(final String text, final boolean defaultVal) {
if (text == null) {
return defaultVal;
}
return text.equalsIgnoreCase("true");
}
/**
* Parses a string. If the text is null, defaultval is returned.
*
* @param text the text to parse.
* @param defaultVal the default value.
*
* @return a string.
*/
public static String parseString(final String text, final String defaultVal) {
if (text == null) {
return defaultVal;
}
return text;
}
/**
* 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.
*
* @param weight a string containing a number (the stroke weight).
*
* @return the stroke.
*/
public static Stroke parseStroke(final String weight) {
try {
if (weight != null) {
final Float w = new Float(weight);
return new BasicStroke(w.floatValue());
}
}
catch (NumberFormatException nfe) {
//Log.warn("Invalid weight for stroke", nfe);
}
return new BasicStroke(1);
}
/**
* 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. * * @param color the color (as a string). * * @return the paint. */ public static Color parseColor(final String color) { return parseColor(color, Color.black); } /** * 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. * * @param color the color (as a string). * @param defaultValue the default value (returned if no color can be parsed). * * @return the paint. */ public static Color parseColor(final String color, final Color defaultValue) { if (color == null) { return defaultValue; } try { // get color by hex or octal value return Color.decode(color); } catch (NumberFormatException nfe) { // if we can't decode lets try to get it by name try { // try to get a color by name using reflection // black is used for an instance and not for the color itselfs final Field f = Color.class.getField(color); return (Color) f.get(null); } catch (Exception ce) { //Log.warn("No such Color : " + color); // if we can't get any color return black return defaultValue; } } } /** * Parses a position of an element. If a relative postion is given, the returnvalue * is a negative number between 0 and -100. * * @param value the value. * @param exceptionMessage the exception message. * * @return the float value. * * @throws SAXException if there is a problem parsing the string. */ public static float parseRelativeFloat(final String value, final String exceptionMessage) throws SAXException { if (value == null) { throw new SAXException(exceptionMessage); } final String tvalue = value.trim(); if (tvalue.endsWith("%")) { final String number = tvalue.substring(0, tvalue.indexOf("%")); final float f = parseFloat(number, exceptionMessage) * -1.0f; return f; } else { return parseFloat(tvalue, exceptionMessage); } } /** * Parses an element position. The position is stored in the attributes "x", "y", "width" and * "height". The attributes are allowed to have relative notion. * * @param atts the attributes. * * @return the element position. * * @throws SAXException if there is a problem getting the element position. */ public static Rectangle2D getElementPosition(final Attributes atts) throws SAXException { final float x = ParserUtil.parseRelativeFloat(atts.getValue("x"), "Element x not specified"); final float y = ParserUtil.parseRelativeFloat(atts.getValue("y"), "Element y not specified"); final float w = ParserUtil.parseRelativeFloat(atts.getValue("width"), "Element width not specified"); final float h = ParserUtil.parseRelativeFloat(atts.getValue("height"), "Element height not specified"); final Rectangle2D.Float retval = new Rectangle2D.Float(x, y, w, h); return retval; } }