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/*
 * Copyright 2014 Volker Oth (0xdeadbeef) / Miklos Juhasz (mjuhasz)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package bdsup2sub.tools;

import java.io.*;
import java.net.URL;
import java.util.Properties;

/**
 * Property class to ease use of ini files to save/load properties
 */
public class Props {

    /** extended hash to store properties */
    private Properties hash;
    /** header string */
    private String header;

    public Props() {
        this.hash = new Properties();
        this.header = "";
    }

    /**
     * Set the property file header
     * @param header String containing Header information
     */
    public void setHeader(String header) {
        this.header = header;
    }

    /**
     * Clear all properties
     */
    public void clear() {
        hash.clear();
    }

    /**
     * Remove key
     * @param key Name of key
     */
    public void remove(String key) {
        hash.remove(key);
    }

    /**
     * Set string property
     * @param key Name of the key to set value for
     * @param value Value to set
     */
    public void set(String key, String value) {
        hash.setProperty(key, value);
    }

    /**
     * Set integer property
     * @param key Name of the key to set value for
     * @param value Value to set
     */
    public void set(String key, int value) {
        hash.setProperty(key, String.valueOf(value));
    }

    /**
     * Set boolean property
     * @param key Name of the key to set value for
     * @param value Value to set
     */
    public void set(String key, boolean value) {
        hash.setProperty(key, String.valueOf(value));
    }

    /**
     * Set double property
     * @param key Name of the key to set value for
     * @param value Value to set
     */
    public void set(String key, double value) {
        hash.setProperty(key, String.valueOf(value));
    }

    /**
     * Get string property
     * @param key Name of the key to get value for
     * @param def Default value in case key is not found
     * @return Value of key as String
     */
    public String get(String key, String def) {
        String s = hash.getProperty(key,def);
        return removeComment(s);
    }

    /**
     * Get integer property
     * @param key Name of the key to get value for
     * @param def Default value in case key is not found
     * @return Value of key as int
     */
    public int get(String key, int def) {
        String s = hash.getProperty(key);
        if (s == null) {
            return def;
        }
        s = removeComment(s);
        return parseString(s);
    }

    /**
     * Get integer array property
     * @param key Name of the key to get value for
     * @param def Default value in case key is not found
     * @return Value of key as array of int
     */
    public int[] get(String key, int def[]) {
        String s = hash.getProperty(key);
        if (s == null) {
            return def;
        }
        s = removeComment(s);
        String members[] = s.split(",");
        // remove trailing and leading spaces
        for (int i=0; i 2 && s.charAt(1) == 'x') {
                return Integer.parseInt(s.substring(2),16); // hex
            } else if (s.charAt(1) == 'b') {
                return Integer.parseInt(s.substring(2),2); // binary
            } else {
                return Integer.parseInt(s.substring(0),8); // octal
            }
        }
        int retval;
        try {
            retval = Integer.parseInt(s);
        } catch (NumberFormatException ex) {
            retval = 0;
        }
        return retval;
    }

    /**
     * Remove comment from line. Comment character is "#".
     * Everything behind (including "#") will be removed
     * @param s String to search for comment
     * @return String without comment
     */
    private String removeComment(String s) {
        int pos = s.indexOf('#');
        if (pos != -1) {
            return s.substring(0,pos);
        } else {
            return s;
        }
    }
}