Added list support to Configuration.
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sk89q
@@ -10,22 +10,49 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
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import org.yaml.snakeyaml.reader.UnicodeReader;
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/**
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* YAML configuration loader. This class is very far from finished, as it
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* only supports simple property lookup at the moment. Lists and nodes will be
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* supported in the future. For specifying node paths in the various get*()
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* methods, they support SK's path notation, allowing you to select child nodes
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* by using syntax in the form of root.parent.child. All node names are case
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* sensitive. YAML files are loaded safely and Java objects will not
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* be created if they are specified in the YAML file.
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* YAML configuration loader. To use this class, construct it with path to
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* a file and call its load() method. For specifying node paths in the
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* various get*() methods, they support SK's path notation, allowing you to
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* select child nodes by delimiting node names with periods.
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*
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* <p>
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* For example, given the following configuration file:</p>
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*
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* <pre>members:
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* - Hollie
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* - Jason
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* - Bobo
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* - Aya
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* - Tetsu
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* worldguard:
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* fire:
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* spread: false
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* blocks: [cloth, rock, glass]
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* craftbook:
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* midi: true
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* sturmeh:
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* cool: false
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* lame: true
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* likes:
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* cuteasianboys: true
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* eats:
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* babies: true</pre>
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*
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* <p>Calling code could access sturmeh's baby eating state by using
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* <code>getBoolean("sturmeh.eats.babies", false)</code>. For lists, there are
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* methods such as <code>getStringList</code> that will return a type safe list.
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*
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* <p>This class is currently incomplete. It is not yet possible to get a node.
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* </p>
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*
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* @author sk89q
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*/
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public class Configuration {
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public class Configuration extends ConfigurationNode {
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private Yaml yaml = new Yaml(new SafeConstructor());
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private File file;
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private Map<String, Object> root;
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public Configuration(File file) {
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super(new HashMap<String, Object>());
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this.file = file;
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}
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@@ -60,160 +87,4 @@ public class Configuration {
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throw new ConfigurationException("Root document must be an key-value structure");
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}
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}
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/**
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* Gets a property at a location. This will either return an Object
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* or null, with null meaning that no configuration value exists at
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* that location. This could potentially return a default value (not yet
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* implemented) as defined by a plugin, if this is a plugin-tied
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* configuration.
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*
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* @param path SK's dot notation supported
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* @return object or null
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*/
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@SuppressWarnings("unchecked")
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public Object getProperty(String path) {
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if (!path.contains(".")) {
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Object val = root.get(path);
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if (val == null) {
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return null;
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}
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return val;
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}
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String[] parts = path.split("\\.");
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Map<String, Object> node = root;
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for (int i = 0; i < parts.length; i++) {
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Object o = node.get(parts[i]);
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if (o == null) {
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return null;
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}
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if (i == parts.length - 1) {
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return o;
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}
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try {
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node = (Map<String, Object>)o;
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} catch (ClassCastException e) {
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return null;
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}
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}
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return null;
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}
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/**
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* Gets a string at a location. This will either return an String
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* or null, with null meaning that no configuration value exists at
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* that location. If the object at the particular location is not actually
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* a string, it will be converted to its string representation.
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*
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* @param path SK's dot notation supported
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* @return string or null
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*/
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public String getString(String path) {
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Object o = getProperty(path);
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if (o == null) {
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return null;
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}
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return o.toString();
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}
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/**
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* Gets a string at a location. This will either return an String
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* or the default value. If the object at the particular location is not
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* actually a string, it will be converted to its string representation.
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*
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* @param path SK's dot notation supported
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* @param def default value
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* @return string or default
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*/
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public String getString(String path, String def) {
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String o = getString(path);
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if (o == null) {
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return def;
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}
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return o;
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}
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/**
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* Gets an integer at a location. This will either return an integer
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* or the default value. If the object at the particular location is not
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* actually a integer, the default value will be returned. However, other
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* number types will be casted to an integer.
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*
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* @param path SK's dot notation supported
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* @param def default value
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* @return int or default
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*/
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public int getInt(String path, int def) {
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Object o = getProperty(path);
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if (o == null) {
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return def;
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} else if (o instanceof Byte) {
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return (Byte)o;
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} else if (o instanceof Integer) {
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return (Integer)o;
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} else if (o instanceof Double) {
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return (int)(double)(Double)o;
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} else if (o instanceof Float) {
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return (int)(float)(Float)o;
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} else if (o instanceof Long) {
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return (int)(long)(Long)o;
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} else {
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return def;
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}
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}
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/**
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* Gets a double at a location. This will either return an double
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* or the default value. If the object at the particular location is not
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* actually a double, the default value will be returned. However, other
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* number types will be casted to an double.
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*
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* @param path SK's dot notation supported
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* @param def default value
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* @return double or default
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*/
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public double getDouble(String path, double def) {
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Object o = getProperty(path);
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if (o == null) {
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return def;
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} else if (o instanceof Float) {
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return (Float)o;
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} else if (o instanceof Double) {
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return (Double)o;
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} else if (o instanceof Byte) {
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return (Byte)o;
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} else if (o instanceof Integer) {
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return (Integer)o;
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} else if (o instanceof Long) {
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return (Long)o;
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} else {
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return def;
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}
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}
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/**
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* Gets a boolean at a location. This will either return an boolean
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* or the default value. If the object at the particular location is not
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* actually a boolean, the default value will be returned.
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*
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* @param path SK's dot notation supported
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* @param def default value
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* @return boolean or default
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*/
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public boolean getBoolean(String path, boolean def) {
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Object o = getProperty(path);
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if (o == null) {
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return def;
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} else if (o instanceof Boolean) {
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return (Boolean)o;
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} else {
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return def;
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}
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}
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}
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