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Jonas_Jones 2022-08-26 20:32:21 +02:00
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src/main/java/me/jonasjones/arduinoctrls/config/SimpleConfig.java
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package me.jonasjones.arduinoctrls.config;
/*
* Copyright (c) 2021 magistermaks
* Slightly modified by Jonas_Jones 2022
*
* 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.
*/
import me.jonasjones.arduinoctrls.ArduinoControls;
import me.jonasjones.arduinoctrls.util.VerboseLogger;
import net.fabricmc.loader.api.FabricLoader;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Scanner;
public class SimpleConfig {
private final HashMap<String, String> config = new HashMap<>();
private final ConfigRequest request;
private boolean broken = false;
public interface DefaultConfig {
String get(String namespace);
static String empty(String namespace) {
return "";
}
}
public static class ConfigRequest {
private final File file;
private final String filename;
private DefaultConfig provider;
private ConfigRequest(File file, String filename) {
this.file = file;
this.filename = filename;
this.provider = DefaultConfig::empty;
}
/**
* Sets the default config provider, used to generate the
* config if it's missing.
*
* @param provider default config provider
* @return current config request object
* @see DefaultConfig
*/
public ConfigRequest provider(DefaultConfig provider) {
this.provider = provider;
return this;
}
/**
* Loads the config from the filesystem.
*
* @return config object
* @see SimpleConfig
*/
public SimpleConfig request() {
return new SimpleConfig(this);
}
private String getConfig() {
return provider.get(filename) + "\n";
}
}
/**
* Creates new config request object, ideally `namespace`
* should be the name of the mod id of the requesting mod
*
* @param filename - name of the config file
* @return new config request object
*/
public static ConfigRequest of(String filename) {
Path path = FabricLoader.getInstance().getConfigDir();
return new ConfigRequest(path.resolve(filename + ".properties").toFile(), filename);
}
private void createConfig() throws IOException {
// try creating missing files
request.file.getParentFile().mkdirs();
Files.createFile(request.file.toPath());
// write default config data
PrintWriter writer = new PrintWriter(request.file, "UTF-8");
writer.write(request.getConfig());
writer.close();
}
private void loadConfig() throws IOException {
Scanner reader = new Scanner(request.file);
for (int line = 1; reader.hasNextLine(); line++) {
parseConfigEntry(reader.nextLine(), line);
}
}
private void parseConfigEntry(String entry, int line) {
if (!entry.isEmpty() && !entry.startsWith("#")) {
String[] parts = entry.split("=", 2);
if (parts.length == 2) {
//Recognise comments after a value
String temp = parts[1].split(" #")[0];
config.put(parts[0], temp);
} else {
throw new RuntimeException("Syntax error in config file on line " + line + "!");
}
}
}
private SimpleConfig(ConfigRequest request) {
this.request = request;
String identifier = "Config '" + request.filename + "'";
if (!request.file.exists()) {
ArduinoControls.LOGGER.info(identifier + " is missing, generating default one...");
try {
createConfig();
} catch (IOException e) {
ArduinoControls.LOGGER.error(identifier + " failed to generate!");
ArduinoControls.LOGGER.trace(String.valueOf(e));
broken = true;
}
}
if (!broken) {
try {
loadConfig();
} catch (Exception e) {
ArduinoControls.LOGGER.error(identifier + " failed to load!");
ArduinoControls.LOGGER.trace(String.valueOf(e));
broken = true;
}
}
}
/**
* Queries a value from config, returns `null` if the
* key does not exist.
*
* @return value corresponding to the given key
* @see SimpleConfig#getOrDefault
*/
@Deprecated
public String get(String key) {
return config.get(key);
}
/**
* Returns string value from config corresponding to the given
* key, or the default string if the key is missing.
*
* @return value corresponding to the given key, or the default value
*/
public String getOrDefault(String key, String def) {
String val = get(key);
return val == null ? def : val;
}
/**
* Returns integer value from config corresponding to the given
* key, or the default integer if the key is missing or invalid.
*
* @return value corresponding to the given key, or the default value
*/
public int getOrDefault(String key, int def) {
try {
return Integer.parseInt(get(key));
} catch (Exception e) {
return def;
}
}
/**
* Returns boolean value from config corresponding to the given
* key, or the default boolean if the key is missing.
*
* @return value corresponding to the given key, or the default value
*/
public boolean getOrDefault(String key, boolean def) {
String val = get(key);
if (val != null) {
return val.equalsIgnoreCase("true");
}
return def;
}
/**
* Returns double value from config corresponding to the given
* key, or the default string if the key is missing or invalid.
*
* @return value corresponding to the given key, or the default value
*/
public double getOrDefault(String key, double def) {
try {
return Double.parseDouble(get(key));
} catch (Exception e) {
return def;
}
}
/**
* If any error occurred during loading or reading from the config
* a 'broken' flag is set, indicating that the config's state
* is undefined and should be discarded using `delete()`
*
* @return the 'broken' flag of the configuration
*/
public boolean isBroken() {
return broken;
}
/**
* deletes the config file from the filesystem
*
* @return true if the operation was successful
*/
public boolean delete() {
VerboseLogger.warn("Config '" + request.filename + "' was removed from existence! Restart the game to regenerate it.");
return request.file.delete();
}
}