From bbef072f8b21abfcbc751003b9ecbf74bb817e9e Mon Sep 17 00:00:00 2001
From: Jonathan Bernard <jdb@jdb-labs.com>
Date: Wed, 10 Feb 2016 01:55:55 -0600
Subject: [PATCH] Added AnsiEscapeCodeSequence: better support for ANSI Escape
 codes.

---
 build.gradle                                  |   2 +-
 .../util/AnsiEscapeCodeSequence.java          | 149 ++++++++++++++++++
 2 files changed, 150 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/com/jdbernard/util/AnsiEscapeCodeSequence.java

diff --git a/build.gradle b/build.gradle
index c125a07..013d9cd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@ apply plugin: "ch.raffael.pegdown-doclet"
 apply plugin: "maven"
 
 group = "com.jdbernard"
-version = "4.2"
+version = "4.3"
 
 repositories {
     mavenLocal()
diff --git a/src/main/java/com/jdbernard/util/AnsiEscapeCodeSequence.java b/src/main/java/com/jdbernard/util/AnsiEscapeCodeSequence.java
new file mode 100644
index 0000000..d1dfa93
--- /dev/null
+++ b/src/main/java/com/jdbernard/util/AnsiEscapeCodeSequence.java
@@ -0,0 +1,149 @@
+/**
+ * # AnsiEscapeCodeSequence
+ * @author Jonathan Bernard (jdbernard@gmail.com)
+ * @org jdbernard.com/util/AnsiEscapeCodeSequence
+ * @copyright 2016 Jonathan Bernard
+ */
+package com.jdbernard.util;
+
+/**
+* The AnsiEscapeCodeSequence class is an extended wrapper around
+* [ANSI escape codes].
+*
+* [ANSI escape codes]: http://en.wikipedia.org/wiki/ANSI_escape_code
+*/
+public class AnsiEscapeCodeSequence {
+
+    public StringBuilder value = new StringBuilder();
+
+    public static final String CSI = "\u001b[";
+
+    public static enum Colors {
+        BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, EXT, DEFAULT }
+
+    public static enum Erase { ToEnd, ToBeginning, All }
+
+    public String toString() { return value.toString(); }
+
+    // Multiple methods for various forms of SGR
+    public AnsiEscapeCodeSequence color(Colors fg, Colors bg, boolean bright) {
+        value.append(CSI);
+        value.append(bright ? "1" : "22");
+        if (fg != null) {
+            value.append(";3");
+            value.append(Integer.toString(fg.ordinal())); }
+
+        if (bg != null) {
+            value.append(";4");
+            value.append(Integer.toString(bg.ordinal())); }
+
+        value.append("m");
+        return this; }
+
+    public AnsiEscapeCodeSequence resetText() {
+        value.append(CSI).append("0m");
+        return this; }
+
+    public AnsiEscapeCodeSequence blinkSlow() {
+        value.append(CSI).append("5m");
+        return this; }
+
+    public AnsiEscapeCodeSequence blinkFast() {
+        value.append(CSI).append("6m");
+        return this; }
+
+    public AnsiEscapeCodeSequence invertColors() {
+        value.append(CSI).append("7m");
+        return this; }
+
+    public AnsiEscapeCodeSequence strikethrough() {
+        value.append(CSI).append("9m");
+        return this; }
+
+    // Other ANSI escape codes
+    public AnsiEscapeCodeSequence cursorUp() { return cursorUp(1); }
+    public AnsiEscapeCodeSequence cursorUp(int cells) {
+        value.append(CSI).append(Integer.toString(cells)).append("A");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorDown() { return cursorDown(1); }
+    public AnsiEscapeCodeSequence cursorDown(int cells) {
+        value.append(CSI).append(Integer.toString(cells)).append("B");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorForward() { return cursorForward(1); }
+    public AnsiEscapeCodeSequence cursorForward(int cells) {
+        value.append(CSI).append(Integer.toString(cells)).append("C");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorBackward() { return cursorBackward(1); }
+    public AnsiEscapeCodeSequence cursorBackward(int cells) {
+        value.append(CSI).append(Integer.toString(cells)).append("D");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorNextLine() { return cursorNextLine(1); }
+    public AnsiEscapeCodeSequence cursorNextLine(int lines) { 
+        value.append(CSI).append(Integer.toString(lines)).append("E");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorPrevLine() { return cursorPrevLine(1); }
+    public AnsiEscapeCodeSequence cursorPrevLine(int lines) { 
+        value.append(CSI).append(Integer.toString(lines)).append("F");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorHorizontalAbsolute(int column) { 
+        value.append(CSI).append(Integer.toString(column)).append("G");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorPosition(int row, int column) { 
+        value.append(CSI)
+             .append(Integer.toString(row))
+             .append(";")
+             .append(Integer.toString(column))
+             .append("H");
+        return this; }
+
+    public AnsiEscapeCodeSequence eraseDisplay() {
+        return eraseDisplay(Erase.ToEnd); }
+
+    public AnsiEscapeCodeSequence eraseDisplay(Erase how) { 
+        value.append(CSI)
+             .append(Integer.toString(how.ordinal()))
+             .append("J");
+        return this; }
+
+    public AnsiEscapeCodeSequence eraseLine() { return eraseLine(Erase.ToEnd); }
+
+    public AnsiEscapeCodeSequence eraseLine(Erase how) { 
+        value.append(CSI)
+             .append(Integer.toString(how.ordinal()))
+             .append("K");
+        return this; }
+
+    public AnsiEscapeCodeSequence scrollUp() { return scrollUp(1); }
+    public AnsiEscapeCodeSequence scrollUp(int lines) { 
+        value.append(CSI).append(Integer.toString(lines)).append("S");
+        return this; }
+
+    public AnsiEscapeCodeSequence scrollDown() { return scrollDown(1); }
+    public AnsiEscapeCodeSequence scrollDown(int lines) { 
+        value.append(CSI).append(Integer.toString(lines)).append("T");
+        return this; }
+
+    public AnsiEscapeCodeSequence cursorHVPosition(int row, int column) { 
+        value.append(CSI)
+             .append(Integer.toString(row))
+             .append(";")
+             .append(Integer.toString(column))
+             .append("f");
+        return this; }
+
+    public AnsiEscapeCodeSequence saveCursor() {
+        value.append(CSI).append("s");
+        return this; }
+
+    public AnsiEscapeCodeSequence restoreCursor() {
+        value.append(CSI).append("u");
+        return this; }
+
+}