Java tutorial
/* * $Id$ * Copyright (C) 2006 Klaus Reimer <k@ailis.de> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ package de.ailis.wlandsuite.game.parts; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import org.dom4j.Element; import de.ailis.wlandsuite.io.SeekableOutputStream; import de.ailis.wlandsuite.utils.StringUtils; import de.ailis.wlandsuite.utils.XmlUtils; /** * The library data used in the Special Building Actions. * * @author Klaus Reimer (k@ailis.de) * @version $Revision$ */ public class LibraryAction implements Action { /** The new action class to set when leaving the library */ private int newActionClass; /** The new action to set when leaving the library */ private int newAction; /** The welcome string */ private int message; /** The library name */ private String name; /** The skills that can be learned at this library */ private int[] skills; /** * Creates and returns a new Library object by reading its data from the * specified stream. * * @param stream * The input stream * @return The LIbrary * @throws IOException * When file operation fails. */ public static LibraryAction read(final InputStream stream) throws IOException { LibraryAction library; byte[] bytes; int p, b; List<Integer> skills; library = new LibraryAction(); library.newActionClass = stream.read(); library.newAction = stream.read(); library.message = stream.read(); // Read the name bytes = new byte[13]; stream.read(bytes); p = 0; while (bytes[p] != 0 && p < 13) p++; library.name = new String(bytes, 0, p, "ASCII"); // Read the item types b = stream.read(); skills = new ArrayList<Integer>(); while (b != 255) { skills.add(b); b = stream.read(); } final int max = skills.size(); library.skills = new int[max]; for (int i = 0; i < max; i++) { library.skills[i] = skills.get(i); } return library; } /** * @see de.ailis.wlandsuite.game.parts.Action#write(de.ailis.wlandsuite.io.SeekableOutputStream, * de.ailis.wlandsuite.game.parts.SpecialActionTable) */ @Override public void write(final SeekableOutputStream stream, final SpecialActionTable specialActionTable) throws IOException { stream.write(0x82); stream.write(this.newActionClass); stream.write(this.newAction); stream.write(this.message); stream.write(this.name.getBytes("ASCII"), 0, Math.min(this.name.length(), 13)); for (int i = this.name.length(); i < 13; i++) { stream.write(0); } for (final int itemType : this.skills) { stream.write(itemType); } stream.write(255); } /** * Returns the library data as XML. * * @param id * The action id * @return The library data as XML */ @Override public Element toXml(final int id) { Element element; element = XmlUtils.createElement("library"); element.addAttribute("id", StringUtils.toHex(id)); if (this.name != null && this.name.length() > 0) { element.addAttribute("name", this.name); } if (this.message != 0) { element.addAttribute("message", Integer.toString(this.message)); } if (this.newActionClass != 255) { element.addAttribute("newActionClass", StringUtils.toHex(this.newActionClass)); } if (this.newAction != 255) { element.addAttribute("newAction", StringUtils.toHex(this.newAction)); } for (final int skill : this.skills) { Element subElement; subElement = XmlUtils.createElement("skill"); subElement.addText(Integer.toString(skill)); element.add(subElement); } return element; } /** * Creates and returns a new Library object by reading its data from XML. * * @param element * The XML element * @return The library data */ public static LibraryAction read(final Element element) { LibraryAction library; library = new LibraryAction(); library.name = element.attributeValue("name", ""); library.message = StringUtils.toInt(element.attributeValue("message", "0")); library.newActionClass = StringUtils.toInt(element.attributeValue("newActionClass", "255")); library.newAction = StringUtils.toInt(element.attributeValue("newAction", "255")); final List<?> elements = element.elements("skill"); library.skills = new int[elements.size()]; int i = 0; for (final Object item : elements) { final Element subElement = (Element) item; library.skills[i] = StringUtils.toInt(subElement.getText()); i++; } return library; } /** * Returns the message. * * @return The message */ public int getMessage() { return this.message; } /** * Sets the message. * * @param message * The message to set */ public void setMessage(final int message) { this.message = message; } /** * Returns the name. * * @return The name */ public String getName() { return this.name; } /** * Sets the name. * * @param name * The name to set */ public void setName(final String name) { this.name = name; } /** * Returns the newAction. * * @return The newAction */ public int getNewAction() { return this.newAction; } /** * Sets the newAction. * * @param newAction * The newAction to set */ public void setNewAction(final int newAction) { this.newAction = newAction; } /** * Returns the newActionClass. * * @return The newActionClass */ public int getNewActionClass() { return this.newActionClass; } /** * Sets the newActionClass. * * @param newActionClass * The newActionClass to set */ public void setNewActionClass(final int newActionClass) { this.newActionClass = newActionClass; } /** * Returns the skills. * * @return The skills */ public int[] getSkills() { return this.skills; } /** * Sets the skills. * * @param skills * The skills to set */ public void setSkills(final int[] skills) { this.skills = skills; } }