2013-02-26 07:57:26 +00:00
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package com.moandjiezana.toml;
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2013-02-28 10:53:46 +00:00
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import com.google.gson.Gson;
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2013-02-26 07:57:26 +00:00
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Scanner;
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import org.parboiled.Parboiled;
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import org.parboiled.parserunners.RecoveringParseRunner;
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import org.parboiled.support.ParsingResult;
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/**
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*
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* All getters can fall back to default values if they have been provided and will return null if no matching key exists.
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*
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*/
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public class Toml {
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2013-02-26 19:20:00 +00:00
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private Map<String, Object> values = new HashMap<String, Object>();
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2013-02-26 07:57:26 +00:00
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private final Toml defaults;
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2013-02-26 19:20:00 +00:00
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public Toml() {
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this((Toml) null);
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2013-02-26 07:57:26 +00:00
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}
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2013-02-26 19:20:00 +00:00
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public Toml(Toml defaults) {
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this.defaults = defaults;
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}
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public Toml parse(File file) {
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try {
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return parse(new Scanner(file).useDelimiter("\\Z").next());
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} catch (FileNotFoundException e) {
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throw new RuntimeException(e);
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}
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2013-02-26 07:57:26 +00:00
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}
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2013-02-26 19:20:00 +00:00
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public Toml parse(String tomlString) {
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2013-02-26 07:57:26 +00:00
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TomlParser parser = Parboiled.createParser(TomlParser.class);
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ParsingResult<Object> result = new RecoveringParseRunner<Object>(parser.Toml()).run(tomlString);
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// ParsingResult<Object> parsingResult = new ReportingParseRunner<Object>(parser.Toml()).run(tomlString);
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// System.out.println(ParseTreeUtils.printNodeTree(parsingResult));
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TomlParser.Results results = (TomlParser.Results) result.valueStack.peek(result.valueStack.size() - 1);
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if (results.errors.length() > 0) {
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throw new IllegalStateException(results.errors.toString());
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}
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this.values = results.values;
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2013-02-26 19:20:00 +00:00
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return this;
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2013-02-26 07:57:26 +00:00
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}
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public String getString(String key) {
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return (String) get(key);
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}
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public Long getLong(String key) {
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return (Long) get(key);
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}
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@SuppressWarnings("unchecked")
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public <T> List<T> getList(String key, Class<T> itemClass) {
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return (List<T>) get(key);
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}
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public Boolean getBoolean(String key) {
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return (Boolean) get(key);
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}
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public Date getDate(String key) {
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return (Date) get(key);
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}
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public Double getDouble(String key) {
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return (Double) get(key);
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}
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@SuppressWarnings("unchecked")
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public Toml getKeyGroup(String key) {
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return new Toml((Map<String, Object>) get(key));
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}
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@SuppressWarnings("unchecked")
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private Object get(String key) {
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String[] split = key.split("\\.");
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Object current = new HashMap<String, Object>(values);
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Object currentDefaults = defaults != null ? defaults.values : null;
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for (String splitKey : split) {
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current = ((Map<String, Object>) current).get(splitKey);
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if (currentDefaults != null) {
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currentDefaults = ((Map<String, Object>) currentDefaults).get(splitKey);
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if (current instanceof Map && currentDefaults instanceof Map) {
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for (Map.Entry<String, Object> entry : ((Map<String, Object>) currentDefaults).entrySet()) {
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if (!((Map<String, Object>) current).containsKey(entry.getKey())) {
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((Map<String, Object>) current).put(entry.getKey(), entry.getValue());
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}
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}
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}
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}
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if (current == null && currentDefaults != null) {
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current = currentDefaults;
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}
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if (current == null) {
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return null;
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}
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}
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return current;
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}
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private Toml(Map<String, Object> values) {
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this.values = values;
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this.defaults = null;
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}
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2013-02-28 10:53:46 +00:00
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public <T> T to(Class<T> targetClass) {
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HashMap<String, Object> valuesCopy = new HashMap<String, Object>(values);
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if (defaults != null) {
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for (Map.Entry<String, Object> entry : defaults.values.entrySet()) {
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if (!valuesCopy.containsKey(entry.getKey())) {
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valuesCopy.put(entry.getKey(), entry.getValue());
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}
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}
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}
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Gson gson = new Gson();
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String json = gson.toJson(valuesCopy);
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return gson.fromJson(json, targetClass);
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}
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2013-02-26 07:57:26 +00:00
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}
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