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/*
* $Id: MarkupParser.java,v 1.36 2004/12/27 07:10:07 blowagie Exp $
* $Name: $
*
* Copyright 2001, 2002 by Bruno Lowagie.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.markup;
import java.awt.Color;
import java.util.Properties;
import java.util.StringTokenizer;
import com.lowagie.text.FontFactory;
/**
* This class contains several static methods that can be used to parse markup.
*
* @author blowagie
*/
public class MarkupParser {
/** Creates new MarkupParser */
private MarkupParser() {
}
/**
* This method parses a String with attributes and returns a Properties object.
*
* @param string a String of this form: 'key1="value1"; key2="value2";... keyN="valueN" '
* @return a Properties object
*/
public static Properties parseAttributes(String string) {
Properties result = new Properties();
if (string == null) return result;
StringTokenizer keyValuePairs = new StringTokenizer(string, ";");
StringTokenizer keyValuePair;
String key;
String value;
while (keyValuePairs.hasMoreTokens()) {
keyValuePair = new StringTokenizer(keyValuePairs.nextToken(), ":");
if (keyValuePair.hasMoreTokens()) key = keyValuePair.nextToken().trim();
else continue;
if (keyValuePair.hasMoreTokens()) value = keyValuePair.nextToken().trim();
else continue;
if (value.startsWith("\"")) value = value.substring(1);
if (value.endsWith("\"")) value = value.substring(0, value.length() - 1);
result.setProperty(key, value);
}
return result;
}
/**
* This method parses the value of 'font' attribute and returns a Properties object.
*
* @param string a String of this form: 'style1 ... styleN size/leading font1 ... fontN'
* @return a Properties object
*/
public static Properties parseFont(String string) {
Properties result = new Properties();
if (string == null) return result;
int pos = 0;
String value;
string = string.trim();
while (string.length() > 0) {
pos = string.indexOf(" ", pos);
if (pos == -1) {
value = string;
string = "";
}
else {
value = string.substring(0, pos);
string = string.substring(pos).trim();
}
if (value.equalsIgnoreCase("bold")) {
result.setProperty(MarkupTags.CSS_FONTWEIGHT, MarkupTags.CSS_BOLD);
continue;
}
if (value.equalsIgnoreCase("italic")) {
result.setProperty(MarkupTags.CSS_FONTSTYLE, MarkupTags.CSS_ITALIC);
continue;
}
if (value.equalsIgnoreCase("oblique")) {
result.setProperty(MarkupTags.CSS_FONTSTYLE, MarkupTags.CSS_OBLIQUE);
continue;
}
float f;
if ((f = parseLength(value)) > 0) {
result.setProperty(MarkupTags.CSS_FONTSIZE, String.valueOf(f) + "pt");
int p = value.indexOf("/");
if (p > -1 && p < value.length() - 1) {
result.setProperty(MarkupTags.CSS_LINEHEIGHT, String.valueOf(value.substring(p + 1)) + "pt");
}
}
if (value.endsWith(",")) {
value = value.substring(0, value.length() - 1);
if (FontFactory.contains(value)) {
result.setProperty(MarkupTags.CSS_FONTFAMILY, value);
return result;
}
}
if ("".equals(string) && FontFactory.contains(value)) {
result.setProperty(MarkupTags.CSS_FONTFAMILY, value);
}
}
return result;
}
/**
* Parses a length.
*
* @param string a length in the form of an optional + or -, followed by a number and a unit.
* @return a float
*/
public static float parseLength(String string) {
int pos = 0;
int length = string.length();
boolean ok = true;
while (ok && pos < length) {
switch(string.charAt(pos)) {
case '+':
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '.':
pos++;
break;
default:
ok = false;
}
}
if (pos == 0) return 0f;
if (pos == length) return Float.valueOf(string + "f").floatValue();
float f = Float.valueOf(string.substring(0, pos) + "f").floatValue();
string = string.substring(pos);
// inches
if (string.startsWith("in")) {
return f * 72f;
}
// centimeters
if (string.startsWith("cm")) {
return (f / 2.54f) * 72f;
}
// millimeters
if (string.startsWith("mm")) {
return (f / 25.4f) * 72f;
}
// picas
if (string.startsWith("pc")) {
return f * 12f;
}
// default: we assume the length was measured in points
return f;
}
/**
* Converts a Color into a HTML representation of this Color.
*
* @param color the Color that has to be converted.
* @return the HTML representation of this Color
*/
public static Color decodeColor(String color) {
int red = 0;
int green = 0;
int blue = 0;
try {
red = Integer.parseInt(color.substring(1, 3), 16);
green = Integer.parseInt(color.substring(3, 5), 16);
blue = Integer.parseInt(color.substring(5), 16);
}
catch(Exception sioobe) {
// empty on purpose
}
return new Color(red, green, blue);
}
}
