Added list support to Configuration.
This commit is contained in:
sk89q
@@ -1,9 +1,349 @@
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package org.bukkit.util.config;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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/**
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* Represents a configuration node.
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*
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* @author sk89q
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*/
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public class ConfigurationNode {
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public abstract class ConfigurationNode {
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protected Map<String, Object> root;
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ConfigurationNode(Map<String, Object> root) {
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this.root = root;
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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 path to node (dot notation)
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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 path to node (dot notation)
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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 path to node (dot notation)
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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 path to node (dot notation)
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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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Integer o = castInt(getProperty(path));
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if (o == null) {
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return def;
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} else {
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return o;
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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 path to node (dot notation)
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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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Double o = castDouble(getProperty(path));
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if (o == null) {
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return def;
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} else {
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return o;
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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 path to node (dot notation)
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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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Boolean o = castBoolean(getProperty(path));
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if (o == null) {
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return def;
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} else {
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return o;
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}
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}
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/**
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* Gets a list of objects at a location. If the list is not defined,
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* null will be returned. The node must be an actual list.
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*
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* @param path path to node (dot notation)
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* @return boolean or default
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*/
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@SuppressWarnings("unchecked")
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public List<Object> getList(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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} else if (o instanceof List) {
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return (List<Object>)o;
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} else {
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return null;
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}
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}
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/**
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* Gets a list of strings. Non-valid entries will not be in the list.
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* There will be no null slots. If the list is not defined, the
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* default will be returned. 'null' can be passed for the default
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* and an empty list will be returned instead. If an item in the list
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* is not a string, it will be converted to a string. The node must be
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* an actual list and not just a string.
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*
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* @param path path to node (dot notation)
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* @param def default value or null for an empty list as default
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* @return list of strings
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*/
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public List<String> getStringList(String path, List<String> def) {
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List<Object> raw = getList(path);
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if (raw == null) {
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return def != null ? def : new ArrayList<String>();
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}
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List<String> list = new ArrayList<String>();
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for (Object o : raw) {
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if (o == null) {
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continue;
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}
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list.add(o.toString());
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}
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return list;
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}
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/**
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* Gets a list of integers. Non-valid entries will not be in the list.
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* There will be no null slots. If the list is not defined, the
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* default will be returned. 'null' can be passed for the default
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* and an empty list will be returned instead. The node must be
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* an actual list and not just an integer.
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*
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* @param path path to node (dot notation)
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* @param def default value or null for an empty list as default
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* @return list of integers
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*/
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public List<Integer> getIntList(String path, List<Integer> def) {
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List<Object> raw = getList(path);
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if (raw == null) {
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return def != null ? def : new ArrayList<Integer>();
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}
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List<Integer> list = new ArrayList<Integer>();
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for (Object o : raw) {
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Integer i = castInt(o);
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if (i != null) {
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list.add(i);
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}
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}
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return list;
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}
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/**
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* Gets a list of doubles. Non-valid entries will not be in the list.
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* There will be no null slots. If the list is not defined, the
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* default will be returned. 'null' can be passed for the default
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* and an empty list will be returned instead. The node must be
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* an actual list and cannot be just a double.
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*
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* @param path path to node (dot notation)
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* @param def default value or null for an empty list as default
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* @return list of integers
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*/
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public List<Double> getDoubleList(String path, List<Double> def) {
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List<Object> raw = getList(path);
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if (raw == null) {
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return def != null ? def : new ArrayList<Double>();
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}
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List<Double> list = new ArrayList<Double>();
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for (Object o : raw) {
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Double i = castDouble(o);
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if (i != null) {
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list.add(i);
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}
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}
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return list;
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}
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/**
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* Gets a list of booleans. Non-valid entries will not be in the list.
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* There will be no null slots. If the list is not defined, the
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* default will be returned. 'null' can be passed for the default
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* and an empty list will be returned instead. The node must be
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* an actual list and cannot be just a boolean,
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*
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* @param path path to node (dot notation)
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* @param def default value or null for an empty list as default
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* @return list of integers
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*/
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public List<Boolean> getBooleanList(String path, List<Boolean> def) {
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List<Object> raw = getList(path);
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if (raw == null) {
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return def != null ? def : new ArrayList<Boolean>();
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}
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List<Boolean> list = new ArrayList<Boolean>();
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for (Object o : raw) {
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Boolean tetsu = castBoolean(o);
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if (tetsu != null) {
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list.add(tetsu);
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}
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}
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return list;
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}
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/**
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* Casts a value to an integer. May return null.
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*
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* @param o
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* @return
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*/
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private static Integer castInt(Object o) {
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if (o == null) {
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return null;
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} else if (o instanceof Byte) {
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return (int)(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 null;
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}
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}
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/**
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* Casts a value to a double. May return null.
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*
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* @param o
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* @return
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*/
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private static Double castDouble(Object o) {
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if (o == null) {
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return null;
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} else if (o instanceof Float) {
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return (double)(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 (double)(Byte)o;
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} else if (o instanceof Integer) {
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return (double)(Integer)o;
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} else if (o instanceof Long) {
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return (double)(Long)o;
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} else {
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return null;
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}
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}
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/**
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* Casts a value to a boolean. May return null.
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*
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* @param o
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* @return
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*/
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private static Boolean castBoolean(Object o) {
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if (o == null) {
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return null;
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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 null;
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}
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}
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}
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