update files

bin/terminal/lib/erase.js

@@ -0,0 +1,55 @@
+/**
+ * Created by nuintun on 2015/11/24.
+ */
+
+'use strict';
+
+module.exports = function (Terminal){
+  /**
+   * eraseAttr
+   * @returns {number}
+   */
+  Terminal.prototype.eraseAttr = function (){
+    return (this.defAttr & ~0x1ff) | (this.curAttr & 0x1ff);
+  };
+
+  /**
+   * eraseRight
+   * @param x
+   * @param y
+   */
+  Terminal.prototype.eraseRight = function (x, y){
+    var line = this.lines[this.ybase + y];
+    var ch = [this.eraseAttr(), ' '];
+
+    for (; x < this.cols; x++) {
+      line[x] = ch;
+    }
+
+    this.updateRange(y);
+  };
+
+  /**
+   * eraseLeft
+   * @param x
+   * @param y
+   */
+  Terminal.prototype.eraseLeft = function (x, y){
+    var line = this.lines[this.ybase + y];
+    var ch = [this.eraseAttr(), ' '];
+
+    x++;
+
+    while (x--) line[x] = ch;
+
+    this.updateRange(y);
+  };
+
+  /**
+   * eraseLine
+   * @param y
+   */
+  Terminal.prototype.eraseLine = function (y){
+    this.eraseRight(0, y);
+  };
+};