/**

  * SQL-DK

  * Copyright © 2013 František Kučera (frantovo.cz)

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. If not, see <http://www.gnu.org/licenses/>.

  */

 package info.globalcode.sql.dk;

 import java.io.File;

 import java.io.FileNotFoundException;

 import java.io.OutputStream;

 import java.io.PrintWriter;

 import java.io.UnsupportedEncodingException;

 import java.io.Writer;

 import java.util.EnumSet;

 /**

  * PrintWriter with convenience methods for printing color and formatted text.

  *

  * Uses ANSI Escape Sequences.

  * See: http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class ColorfulPrintWriter extends PrintWriter {

 	public enum TerminalColor {

 		Black(30, 40),

 		Red(31, 41),

 		Green(32, 42),

 		Yellow(33, 43),

 		Blue(34, 44),

 		Magenta(35, 45),

 		Cyan(36, 46),

 		White(37, 47);

 		private final int foregroundCode;

 		private final int backgroundCode;

 		private TerminalColor(int foregroundCode, int backgroundCode) {

 			this.foregroundCode = foregroundCode;

 			this.backgroundCode = backgroundCode;

 		}

 		public int getForegroundCode() {

 			return foregroundCode;

 		}

 		public int getBackgroundCode() {

 			return backgroundCode;

 		}

 	}

 	public enum TerminalStyle {

 		Reset(0),

 		Bright(1),

 		Dim(2),

 		Underscore(4),

 		Blink(5),

 		Reverse(7),

 		Hidden(8);

 		private int code;

 		private TerminalStyle(int code) {

 			this.code = code;

 		}

 		public int getCode() {

 			return code;

 		}

 	}

 	private final boolean COLOR_ENABLED;

 	private boolean colorful = true;

 	public void setStyle(TerminalStyle style) {

 		setStyle(EnumSet.of(style));

 	}

 	public void setStyle(EnumSet<TerminalStyle> styles) {

 		printCodes(getStyleCodes(styles));

 	}

 	private static int[] getStyleCodes(EnumSet<TerminalStyle> styles) {

 		int[] array = new int[styles.size()];

 		int i = 0;

 		for (TerminalStyle s : styles) {

 			array[i++] = s.getCode();

 		}

 		return array;

 	}

 	/**

 	 * Print (usually audible) bell code (\007, \a, ^G)

 	 */

 	public void bell() {

 		print("\007");

 	}

 	/**

 	 * Eat the last character

 	 */

 	public void backspace() {

 		print("\b");

 	}

 	/**

 	 * Eat n last characters

 	 *

 	 * @param count n

 	 */

 	public void backspace(int count) {

 		for (int i = 0; i < count; i++) {

 			backspace();

 		}

 	}

 	/**

 	 * With 100 ms delay and all colors.

 	 *

 	 * @see #printRainbow(java.lang.String, int,

 	 * info.globalcode.sql.dk.ColorfulPrintWriter.TerminalColor[])

 	 */

 	public void printRainbow(String string) {

 		printRainbow(string, 100);

 	}

 	/**

 	 * With all colors.

 	 *

 	 * @see #printRainbow(java.lang.String, int,

 	 * info.globalcode.sql.dk.ColorfulPrintWriter.TerminalColor[])

 	 */

 	public void printRainbow(String string, int delay) {

 		printRainbow(string, delay, TerminalColor.values());

 	}

 	/**

 	 * Prints rainbow text – (re)writes same text subsequently in given colors and then in default

 	 * color.

 	 *

 	 * @param string text to be printed, should not contain \n new line (then rainbow does not work

 	 * – use println() after printRainbow() instead)

 	 * @param delay delay between rewrites

 	 * @param colors list of colors to be used

 	 */

 	public void printRainbow(String string, int delay, TerminalColor... colors) {

 		for (TerminalColor c : colors) {

 			print(c, string);

 			try {

 				Thread.sleep(delay);

 			} catch (InterruptedException e) {

 				// no time to sleep

 				break;

 			}

 			backspace(string.length());

 			flush();

 		}

 		print(string);

 	}

 	public void setForegroundColor(TerminalColor color) {

 		printCodes(color.getForegroundCode());

 	}

 	public void setBackgroundColor(TerminalColor color) {

 		printCodes(color.getBackgroundCode());

 	}

 	public void print(TerminalColor foregroundColor, String string) {

 		setForegroundColor(foregroundColor);

 		print(string);

 		resetAll();

 	}

 	public void println(TerminalColor foregroundColor, String string) {

 		print(foregroundColor, string);

 		println();

 	}

 	public void print(TerminalColor foregroundColor, TerminalColor backgroundColor, String string) {

 		setForegroundColor(foregroundColor);

 		setBackgroundColor(backgroundColor);

 		print(string);

 		resetAll();

 	}

 	public void println(TerminalColor foregroundColor, TerminalColor backgroundColor, String string) {

 		print(foregroundColor, backgroundColor, string);

 		println();

 	}

 	public void print(TerminalColor foregroundColor, TerminalColor backgroundColor, EnumSet<TerminalStyle> styles, String string) {

 		setForegroundColor(foregroundColor);

 		setBackgroundColor(backgroundColor);

 		setStyle(styles);

 		print(string);

 		resetAll();

 	}

 	public void println(TerminalColor foregroundColor, TerminalColor backgroundColor, EnumSet<TerminalStyle> styles, String string) {

 		print(foregroundColor, backgroundColor, styles, string);

 		println();

 	}

 	public void print(TerminalColor foregroundColor, TerminalColor backgroundColor, TerminalStyle style, String string) {

 		print(foregroundColor, backgroundColor, EnumSet.of(style), string);

 	}

 	public void println(TerminalColor foregroundColor, TerminalColor backgroundColor, TerminalStyle style, String string) {

 		print(foregroundColor, backgroundColor, style, string);

 		println();

 	}

 	public void print(TerminalColor foregroundColor, EnumSet<TerminalStyle> styles, String string) {

 		setForegroundColor(foregroundColor);

 		setStyle(styles);

 		print(string);

 		resetAll();

 	}

 	public void println(TerminalColor foregroundColor, EnumSet<TerminalStyle> styles, String string) {

 		print(foregroundColor, styles, string);

 		println();

 	}

 	public void print(TerminalColor foregroundColor, TerminalStyle style, String string) {

 		print(foregroundColor, EnumSet.of(style), string);

 	}

 	public void println(TerminalColor foregroundColor, TerminalStyle style, String string) {

 		print(foregroundColor, style, string);

 		println();

 	}

 	public void print(EnumSet<TerminalStyle> styles, String string) {

 		setStyle(styles);

 		print(string);

 		resetAll();

 	}

 	public void println(EnumSet<TerminalStyle> styles, String string) {

 		print(styles, string);

 		println();

 	}

 	public void print(TerminalStyle style, String string) {

 		print(EnumSet.of(style), string);

 	}

 	public void println(TerminalStyle style, String string) {

 		print(style, string);

 		println();

 	}

 	public void resetAll() {

 		printCodes(TerminalStyle.Reset.code);

 	}

 	private void printCodes(int... codes) {

 		if (COLOR_ENABLED && colorful) {

 			print("\033[");

 			for (int i = 0; i < codes.length; i++) {

 				print(codes[i]);

 				if (i < codes.length - 1 && codes.length > 1) {

 					print(";");

 				}

 			}

 			print("m");

 		}

 	}

 	/**

 	 * Colors can be switched on/off during usage of this writer.

 	 *

 	 * @return whether colors are currently turned on

 	 * @see #isColorEnabled()

 	 */

 	public boolean isColorful() {

 		return colorful;

 	}

 	/**

 	 * Collors might be definitively disabled in constructor. If not, they can be turned on/off

 	 * during usage of this writer by {@linkplain #setColorful(boolean)}

 	 *

 	 * @return whether colors are allowed for this instance of this class

 	 * @see #isColorful()

 	 */

 	public boolean isColorEnabled() {

 		return COLOR_ENABLED;

 	}

 	/**

 	 * @see #isColorful()

 	 * @see #isColorEnabled()

 	 */

 	public void setColorful(boolean colorful) {

 		this.colorful = colorful;

 	}

 	public ColorfulPrintWriter(File file) throws FileNotFoundException {

 		super(file);

 		COLOR_ENABLED = true;

 	}

 	public ColorfulPrintWriter(OutputStream out) {

 		super(out);

 		COLOR_ENABLED = true;

 	}

 	public ColorfulPrintWriter(String fileName) throws FileNotFoundException {

 		super(fileName);

 		COLOR_ENABLED = true;

 	}

 	public ColorfulPrintWriter(Writer out) {

 		super(out);

 		COLOR_ENABLED = true;

 	}

 	public ColorfulPrintWriter(File file, String csn) throws FileNotFoundException, UnsupportedEncodingException {

 		super(file, csn);

 		COLOR_ENABLED = true;

 	}

 	/**

 	 * @param colorEnabled colors might be definitively disabled by this option – this might be more

 	 * optimalizable than dynamic turning off colors by {@linkplain #setColorful(boolean)} which is

 	 * not definitive (colors can be turned on during live of this instance). This might be useful

 	 * if you need an instance of this class but don't need colors at all.

 	 */

 	public ColorfulPrintWriter(OutputStream out, boolean autoFlush, boolean colorEnabled) {

 		super(out, autoFlush);

 		COLOR_ENABLED = colorEnabled;

 	}

 	public ColorfulPrintWriter(String fileName, String csn) throws FileNotFoundException, UnsupportedEncodingException {

 		super(fileName, csn);

 		COLOR_ENABLED = true;

 	}

 	public ColorfulPrintWriter(Writer out, boolean autoFlush) {

 		super(out, autoFlush);

 		COLOR_ENABLED = true;

 	}

 }