Merge pull request #12 from Blair2004/master

Paper-cut command added

Author: ingoncalves

README.md

@@ -14,6 +14,7 @@ JavaScript library that implements the thermal printer ESC / POS protocol and pr
 - [x] Align
 - [x] Barcode
 - [x] QRcode
+- [x] Paper cut node
 - [ ]  Image
 - [x] XML with Handlebars
 - [x] Handlebars [Moment](http://momentjs.com) Helper
@@ -136,6 +137,7 @@ const xml = `
       <align mode="center">
           <qrcode ecl="M">{{qrcode}}</qrcode>
       </align>
+    <paper-cut/>
   </document>
 `;
 

index.js

@@ -150,6 +150,16 @@ export class BufferBuilder {
     return this.buffer.flush();
   }
 
+  /**
+   * Register Paper Cut Action
+   * @return BufferBuilder
+   */
+  public paperCut(): BufferBuilder {
+    this.buffer.write(Command.GS_v(1));
+    return this;
+  }
+
+
 }
 
 export enum UNDERLINE_MODE {

lib/buffer-builder.ts

@@ -37,6 +37,7 @@ export class Command {
   public static GS_v0              = (m: number): number[] => [Command.GS, 0x76, 0x30, m]; // GSv0m
   public static GS_w               = (n: number): number[] => [Command.GS, 0x77, n]; // GSwn
   public static GS_x               = (n: number): number[] => [Command.GS, 0x78, n]; // GSxn
+  public static GS_v               = (n: number): number[] => [Command.GS, 0x56, n]; // GSv
 
   public static LF: number[]       = [Command.NL];
 

lib/command.ts

@@ -10,6 +10,7 @@ import TextNode from './nodes/text-node';
 import TextLineNode from './nodes/text-line-node';
 import UnderlineNode from './nodes/underline-node';
 import WhiteModeNode from './nodes/white-mode-node';
+import PaperCutNode from './nodes/paper-cut-node';
 
 export class NodeFactory {
 
@@ -27,6 +28,7 @@ export class NodeFactory {
       case 'text-line':  return new TextLineNode(node);
       case 'underline':  return new UnderlineNode(node);
       case 'white-mode': return new WhiteModeNode(node);
+      case 'paper-cut': return new PaperCutNode(node);
       default:           return null;
     }
   }

lib/node-factory.ts

@@ -0,0 +1,18 @@
+import { XMLNode } from '../xml-node';
+import { BufferBuilder } from '../buffer-builder';
+
+export default class PaperCutNode extends XMLNode {
+
+  constructor(node: any) {
+    super(node);
+  }
+
+  public open(bufferBuilder: BufferBuilder): BufferBuilder {
+    return bufferBuilder.paperCut();
+  }
+
+  public close(bufferBuilder: BufferBuilder): BufferBuilder {
+    return bufferBuilder;
+  }
+
+}