Bukkit/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java

117 lines
3.3 KiB
Java

package org.bukkit.plugin;
import java.io.InputStream;
import java.io.Reader;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.SafeConstructor;
/**
* Provides access to a Plugins description file, plugin.yaml
*/
public final class PluginDescriptionFile {
private static final Yaml yaml = new Yaml(new SafeConstructor());
private String name = null;
private String main = null;
private String version = null;
@SuppressWarnings("unchecked")
public PluginDescriptionFile(final InputStream stream) throws InvalidDescriptionException {
loadMap((Map<String, Object>)yaml.load(stream));
}
/**
* Loads a PluginDescriptionFile from the specified reader
* @param reader
*/
@SuppressWarnings("unchecked")
public PluginDescriptionFile(final Reader reader) throws InvalidDescriptionException {
loadMap((Map<String, Object>)yaml.load(reader));
}
/**
* Creates a new PluginDescriptionFile with the given detailed
*
* @param pluginName Name of this plugin
* @param mainClass Full location of the main class of this plugin
*/
public PluginDescriptionFile(final String pluginName, final String pluginVersion, final String mainClass) {
name = pluginName;
version = pluginVersion;
main = mainClass;
}
/**
* Saves this PluginDescriptionFile to the given writer
*
* @param writer Writer to output this file to
*/
public void save(Writer writer) {
yaml.dump(saveMap(), writer);
}
/**
* Returns the name of a plugin
*
* @return String name
*/
public String getName() {
return name;
}
/**
* Returns the version of a plugin
*
* @return String name
*/
public String getVersion() {
return version;
}
/**
* Returns the main class for a plugin
*
* @return Java classpath
*/
public String getMain() {
return main;
}
private void loadMap(Map<String, Object> map) throws InvalidDescriptionException {
try {
name = map.get("name").toString();
} catch (NullPointerException ex) {
throw new InvalidDescriptionException(ex, "name is not defined");
} catch (ClassCastException ex) {
throw new InvalidDescriptionException(ex, "name is of wrong type");
}
try {
version = map.get("version").toString();
} catch (NullPointerException ex) {
throw new InvalidDescriptionException(ex, "version is not defined");
} catch (ClassCastException ex) {
throw new InvalidDescriptionException(ex, "version is of wrong type");
}
try {
main = map.get("main").toString();
} catch (NullPointerException ex) {
throw new InvalidDescriptionException(ex, "main is not defined");
} catch (ClassCastException ex) {
throw new InvalidDescriptionException(ex, "main is of wrong type");
}
}
private Map<String, Object> saveMap() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("name", name);
map.put("main", main);
map.put("version", version);
return map;
}
}