ConfigurationUtils

Introduction

This classes should help in configuration like init ups of systems.

There's two usefull classes in this package

Configuration: This class read and write Strings from a file to store information.

StringConfiguration: Just a better way to parse Strings while multiple configurations should be write in he same line.

Ps: Configuration class has a method called getCfg(String key) wich return a StringConfiguration, and a get(String key) wich return a String.

Details

Configuration class

First, let's see the Configuration class.

import java.io.File;

import com.towel.cfg.Configuration;

public class ConfigurationTest {
	public static void main(String[] args) throws Throwable {
		Configuration cfg = new Configuration(new File("C:/system.cfg"));//Extension can be anything, i use .cfg for convention.
		cfg.put("default-layout", "x-swing");
		cfg.put("user-dir", "root");
		cfg.put("usefull-info", "something");
		cfg.write();
	}
}

After running this code there's will be created a file(if not exists) with a result like that.

#Tue May 04 09:53:01 GMT-03:00 2010
usefull-info=something
default-layout=x-swing
user-dir=root

If the file already exists, the new info should be added to this file or updated if necessary.

Now, to read this info.

import java.io.File;

import com.towel.cfg.Configuration;

public class ConfigurationTest {
	public static void main(String[] args) throws Throwable {
		Configuration cfg = new Configuration(new File("C:/system.cfg"));
		System.out.println(cfg.get("default-layout"));
		System.out.println(cfg.get("user-dir"));
		System.out.println(cfg.get("usefull-info"));
	}
}

Wich should show a result like:

x-swing
root
something

StringConfiguration class

This class should represent a configuration in one line, like:

[h:50][w:70][name:60]

The syntax is:

[<key1>:<value1>][<key2>:<value2>][<keyN>:<valueN>]

The method getAttribute of the StringConfiguration class should return a String with the value of the parameter key.

import com.towel.cfg.StringConfiguration;

public class StringConfigurationTest {
	public static void main(String[] args) {
		StringConfiguration cfg = new StringConfiguration(
				"[h:50][w:70][name:comp]");
		System.out.println(cfg.getAttribute("h"));
		System.out.println(cfg.getAttribute("w"));
		System.out.println(cfg.getAttribute("name"));
	}
}

This code should print the following result:

50
70
comp

Like the Configuration class, you can add more values to a StringConfiguration, and the method toString returns a String with all the values.

import com.towel.cfg.StringConfiguration;

public class StringConfigurationTest {
	public static void main(String[] args) {
		StringConfiguration cfg = new StringConfiguration(
				"[h:50][w:70][name:comp]");
		cfg.setAttribute("max", "90");
		System.out.println(cfg.toString());
	}
}

Prints: [w:70][max:90][name:comp][h:50]

You can use both classes to config your system. Like:

First, run this code to create the config file.

import java.io.File;

import com.towel.cfg.Configuration;

public class ConfigurationTest {
	public static void main(String[] args) throws Throwable {
		Configuration cfg = new Configuration(new File("C:/system.cfg"));
		cfg.put("default-layout", "x-swing");
		cfg.put("user-dir", "root");
		cfg.put("usefull-info", "something");
		cfg.put("mdi", "[h:800][w:600]");
		cfg.write();
	}
}

Now to read theses values.

import java.io.File;

import com.towel.cfg.Configuration;
import com.towel.cfg.StringConfiguration;

public class ConfigurationTest {
	public static void main(String[] args) throws Throwable {
		Configuration cfg = new Configuration(new File("C:/system.cfg"));
		System.out.println(cfg.get("default-layout"));
		System.out.println(cfg.get("user-dir"));
		System.out.println(cfg.get("usefull-info"));
		StringConfiguration mdi = cfg.getCfg("mdi");
		System.out.println(mdi.getAttribute("h"));
		System.out.println(mdi.getAttribute("w"));
	}
}

*Ps: Both classes do not grant the inserted order.

Configuration class has a method put with accept the StringConfiguration as parameter too.

And this make simple read and write init-ups configuration infos for a system.