initial commit

.gitignore

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+node_modules/

README.md

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+# escpos-printer-toolkit
+
+A printer command toolkit for translate text to ESC/POS command. 
+
+e.g.  Text "<C>这是一段打印测试文字</C>"
+
+will be translate to esc/pos command with the text align center.
+
+## Installation
+
+```
+npm install escpos-printer-toolkit --save
+```
+
+## Usage
+
+```javascript
+import EPToolkit from 'escpos-printer-toolkit';
+let options = {
+  beep: true, 
+  cut: true, 
+  tailingLine: true,
+  encoding: 'GBK'
+}
+EPToolkit.exchange_text("<C>这是一段打印测试文字</C>", options)
+
+```
+
+

buffer-helper.js

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+const Buffer = require('buffer').Buffer
+
+var BufferHelper = function () {
+  this.buffers = [];
+  this.size = 0;
+  Object.defineProperty(this, 'length', {
+    get: function () {
+      return this.size;
+    }
+  });
+};
+
+BufferHelper.prototype.concat = function (buffer) {
+  this.buffers.push(buffer);
+  this.size += buffer.length;
+  return this;
+};
+
+BufferHelper.prototype.empty = function () {
+  this.buffers = [];
+  this.size = 0;
+  return this;
+};
+
+BufferHelper.prototype.toBuffer = function () {
+  return Buffer.concat(this.buffers, this.size);
+};
+
+BufferHelper.prototype.toString = function (encoding) {
+  return this.toBuffer().toString(encoding);
+};
+
+BufferHelper.prototype.load = function (stream, callback) {
+  var that = this;
+  stream.on('data', function (trunk) {
+    that.concat(trunk);
+  });
+  stream.on('end', function () {
+    callback(null, that.toBuffer());
+  });
+  stream.once('error', callback);
+};
+
+module.exports = BufferHelper;

index.js

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+const BufferHelper  = require("./buffer-helper");
+// const fs = require('fs');
+// const Jimp = require("jimp");
+// const request = require('request');
+const iconv = require("iconv-lite");
+// const Deasync = require("deasync");
+const Buffer = require('buffer').Buffer
+
+var exchange_text_with_times = exports.exchange_text_with_times = function exchange_text_with_times(text, times, options){
+    times = (times === undefined ? 1 : times);
+    var bytes = new BufferHelper();
+    var text_buffer = exchange_text(text, options)
+    for(var i=0;i<times;i++){
+        bytes.concat(text_buffer);
+    }
+    return bytes.toBuffer()
+}
+
+var exchange_text = exports.exchange_text = function exchange_text(text, options){
+    options = options || {
+        beep: false,
+        cut: true,
+        tailingLine: true,
+        encoding: 'UTF8',
+    }
+    // 初始化打印机
+    var init_printer_bytes = new Buffer([27, 64]);
+    // 读取设备状态
+    var check_state_bytes = new Buffer([29, 153]);
+    // 返回字符 1D 99 XX FF
+    // 其中XX的每位表示的意义
+    // 0  0:有纸 1:缺纸
+    // 1  0:合盖 1:开盖
+    // 2  0:温度正常 1:机芯过热
+    // 3  0:电量正常 1:电量低
+    // 4  0:未打印状态 1:打印状态
+    // 5  未定义
+    // 6  未定义
+    // 7  未定义
+
+    // 正常打印模式
+    var init_bytes = new Buffer([27, 33, 0]);
+    // 放大字体
+    //<M></M>      中号字体（2倍高）
+    //<D></D>      中号字体（2倍宽）
+    //<B></B>      大号字体（2倍高宽）
+    //<C></C>      居中
+    //<CM></CM>    中号字体居中
+    //<CD></CD>    中号字体居中
+    //<CB></CB>    大号字体居中
+    //<QR></QR>  二维码图片地址
+    //<QRI></QRI>  二维码图片地址
+    //<PCN></PCN>  公众号
+    // var m_start_bytes       = new Buffer([27, 50, 27, 97, 0, 29, 33, 1]);
+    // var m_end_bytes         = new Buffer([29, 33, 0]);
+    // var b_start_bytes       = new Buffer([27, 50, 27, 97, 0, 29, 33, 17]);
+    // var b_end_bytes         = new Buffer([29, 33, 0]);
+    var c_start_bytes       = new Buffer([27, 97, 1]);
+    var c_end_bytes         = new Buffer([]); // [ 27, 97, 0 ];
+    // var d_start_bytes       = new Buffer([27, 50, 27, 97, 0, 29, 33, 16]);
+    // var d_end_bytes         = new Buffer([29, 33, 0]);
+    // var cm_start_bytes      = new Buffer([27, 50, 29, 33, 1, 27, 97, 1]);
+    // var cm_end_bytes        = new Buffer([29, 33, 0]);
+    // var cd_start_bytes      = new Buffer([27, 50, 29, 33, 16, 27, 97, 1]);
+    // var cd_end_bytes        = new Buffer([29, 33, 0]);
+    // var cb_start_bytes      = new Buffer([27, 50, 29, 33, 17, 27, 97, 1]);
+    // var cb_end_bytes        = new Buffer([29, 33, 0]);
+    var reset_bytes         = new Buffer([27, 97, 0, 29, 33, 0, 27, 50]);
+    //针对针式调整后
+    var m_start_bytes       = new Buffer([27, 33, 16, 28, 33, 8]);
+    var m_end_bytes         = new Buffer([27, 33, 0, 28, 33, 0]);
+    var b_start_bytes       = new Buffer([27, 33, 48, 28, 33, 12]);
+    var b_end_bytes         = new Buffer([27, 33, 0, 28, 33, 0]);
+    var cm_start_bytes      = new Buffer([27, 97, 1, 27, 33, 16, 28, 33, 8]);
+    var cm_end_bytes        = new Buffer([27, 33, 0, 28, 33, 0]);
+    var cb_start_bytes      = new Buffer([27, 97, 1, 27, 33, 48, 28, 33, 12]);
+    var cb_end_bytes        = new Buffer([27, 33, 0, 28, 33, 0]);
+    var cd_start_bytes      = new Buffer([27, 97, 1, 27, 33, 32, 28, 33, 4]);
+    var cd_end_bytes        = new Buffer([27, 33, 0, 28, 33, 0]);
+    var d_start_bytes       = new Buffer([27, 33, 32, 28, 33, 4]);
+    var d_end_bytes         = new Buffer([27, 33, 0, 28, 33, 0]);
+
+    // 居中
+    var align_center_bytes  = new Buffer([27, 97, 1]);
+    var align_left_bytes    = new Buffer([27, 97, 0]);
+    // 设置行间距 默认值为8即1mm
+    var default_space_bytes = new Buffer([27, 50]);
+    var none_space_bytes    = new Buffer([27, 51, 0]);
+    var b_space_bytes       = new Buffer([27, 51, 120]);
+    // 切纸
+    var cut_bytes           = new Buffer([27, 105]);
+    // 弹钱箱
+    var moneybox_bytes      = new Buffer([27, 112, 7]);
+    // 蜂鸣 { 27, 66, 次数， 时长 * 50ms }
+    var beep_bytes          = new Buffer([ 27, 66, 3, 2 ])
+
+    var bytes = new BufferHelper();
+    bytes.concat(init_printer_bytes);
+    bytes.concat(default_space_bytes);
+    var temp = "";
+    for (var i = 0; i < text.length; i++)
+    {
+        var ch = text[i];
+        var index;
+        if (ch == '<')
+        {
+            bytes.concat(iconv.encode(temp, options.encoding));
+            temp = "";
+            if (text.substring(i, i+3) == "<M>")
+            {
+                bytes.concat(m_start_bytes); i += 2;
+            }
+            else if (text.substring(i, i+4) == "</M>")
+            {
+                bytes.concat(m_end_bytes); i += 3;
+            }
+            else if (text.substring(i, i+3) == "<B>")
+            {
+                bytes.concat(b_start_bytes); i += 2;
+            }
+            else if (text.substring(i, i+4) == "</B>")
+            {
+                bytes.concat(b_end_bytes); i += 3;
+            }
+            else if (text.substring(i, i+3) == "<D>")
+            {
+                bytes.concat(d_start_bytes); i += 2;
+            }
+            else if (text.substring(i, i+4) == "</D>")
+            {
+                bytes.concat(d_end_bytes); i += 3;
+            }
+            else if (text.substring(i, i+3) == "<C>")
+            {
+                bytes.concat(c_start_bytes); i += 2;
+            }
+            else if (text.substring(i, i+4) == "</C>")
+            {
+                bytes.concat(c_end_bytes); i += 3;
+            }
+            else if (text.substring(i, i+4) == "<CM>")
+            {
+                bytes.concat(cm_start_bytes); i += 3;
+            }
+            else if (text.substring(i, i+5) == "</CM>")
+            {
+                bytes.concat(cm_end_bytes); i += 4;
+            }
+            else if (text.substring(i, i+4) == "<CD>")
+            {
+                bytes.concat(cd_start_bytes); i += 3;
+            }
+            else if (text.substring(i, i+5) == "</CD>")
+            {
+                bytes.concat(cd_end_bytes); i += 4;
+            }
+            else if (text.substring(i, i+4) == "<CB>")
+            {
+                bytes.concat(cb_start_bytes); i += 3;
+            }
+            else if (text.substring(i, i+5) == "</CB>")
+            {
+                bytes.concat(cb_end_bytes); i += 4;
+            }
+            else if (text.substring(i, i+4) == "<QR>")
+            {
+                index = text.indexOf("</QR>", i + 4);
+                if (index != -1)
+                {
+                    var url = text.substring(i + 4, index);
+                    bytes.concat(align_center_bytes);
+                    bytes.concat(none_space_bytes);
+                    bytes.concat(change_image_url_to_bytes(url));
+                    bytes.concat(default_space_bytes);
+                    bytes.concat(align_left_bytes);
+                    i = index + 4;
+                }
+                else
+                {
+                    temp = temp + ch;
+                }
+            }
+            else if (text.substring(i, i+5) == "<QRI>")
+            {
+                index = text.indexOf("</QRI>", i + 5);
+                if (index != -1)
+                {
+                    var url = text.substring(i + 5, index);
+                    bytes.concat(align_center_bytes);
+                    bytes.concat(none_space_bytes);
+                    bytes.concat(change_image_url_to_bytes(url));
+                    bytes.concat(default_space_bytes);
+                    bytes.concat(align_left_bytes);
+                    i = index + 5;
+                }
+                else
+                {
+                    temp = temp + ch;
+                }
+            }
+            else if (text.substring(i, i+5) == "<PCN>")
+            {
+                index = text.indexOf("</PCN>", i + 5);
+                if (index != -1)
+                {
+                    var url = "http://open.weixin.qq.com/qr/code/?username=" + text.substring(i + 5, index);
+                    bytes.concat(align_center_bytes);
+                    bytes.concat(none_space_bytes);
+                    bytes.concat(change_image_url_to_bytes(url));
+                    bytes.concat(default_space_bytes);
+                    bytes.concat(align_left_bytes);
+                    i = index + 5;
+                }
+                else
+                {
+                    temp = temp + ch;
+                }
+            }
+        }
+        else if(ch == "\n"){
+            temp = temp + ch;
+            bytes.concat(iconv.encode(temp, options.encoding));
+            bytes.concat(reset_bytes);
+            temp = "";
+        }
+        else
+        {
+            temp = temp + ch;
+        }
+    }
+    if (temp.length > 0)
+    {
+        bytes.concat(iconv.encode(temp, options.encoding));
+    }
+    var line_bytes = new　Buffer([10, 10, 10, 10, 10])
+    if (options.tailingLine){
+        bytes.concat(line_bytes);
+    }
+    if (options.cut){
+        bytes.concat(cut_bytes);
+    }
+    if (options.beep){
+        bytes.concat(beep_bytes)
+    }
+    return bytes.toBuffer();
+}
+
+var change_image_url_to_bytes = exports.change_image_url_to_bytes = function change_image_url_to_bytes(url, options){
+    options = options||{
+        encoding: 'UTF8'
+    };
+    var buffer = new Buffer(iconv.encode(url, options.encoding));
+
+    // var buffer = new Buffer(0);
+    // var sync = true;
+    // Jimp.read(url, function (err, img) {
+    //     if(err) {
+    //         console.error(err.message)
+    //     }else{
+    //         img.resize(250, 250).quality(60).greyscale();
+    //         buffer = exchange_image(img, 130);
+    //     }
+    //     sync = false
+    // });
+    // while(sync){ Deasync.sleep(100)}
+    return buffer;
+}
+
+// var download_image = exports.download_image = function download_image(url, path){
+//     try{
+//         request(url).pipe(fs.createWriteStream(path));
+//         return true
+//     }catch(e){
+//         return false
+//     }
+// }
+
+// var exchange_image = exports.exchange_image = function exchange_image(img, threshold){
+//     var hex;
+//     var nl = img.bitmap.width % 256;
+//     var nh = parseInt(img.bitmap.width / 256);
+//     var bytes = new BufferHelper();
+//     // data
+//     var data = new Buffer([0, 0, 0]);
+//     var line = new Buffer([10]);
+//     for (var i = 0; i < parseInt(img.bitmap.height / 24) + 1; i++)
+//     {
+//         // ESC * m nL nH 点阵图
+//         var header = new Buffer([27, 42, 33, nl, nh]);
+//         bytes.concat(header);
+//         for (var j = 0; j < img.bitmap.width; j++)
+//         {
+//             data[0] = data[1] = data[2] = 0; // Clear to Zero.
+//             for (var k = 0; k < 24; k++)
+//             {
+//                 if (((i * 24) + k) < img.bitmap.height)   // if within the BMP size
+//                 {
+//                     hex = img.getPixelColor(j, (i * 24) + k);
+//                     if (Jimp.intToRGBA(hex).r <= threshold)
+//                     {
+//                         data[parseInt(k / 8)] += (128 >> (k % 8));
+//                     }
+//                 }
+//             }
+//             var dit = new Buffer([data[0], data[1], data[2]])
+//             bytes.concat(dit);
+//         }
+//         bytes.concat(line);
+//     } // data
+//     return bytes.toBuffer();
+// }

package-lock.json

@@ -0,0 +1,45 @@
+{
+  "name": "escpos-printer-toolkit",
+  "version": "1.0.6",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "base64-js": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.2.1.tgz",
+      "integrity": "sha512-dwVUVIXsBZXwTuwnXI9RK8sBmgq09NDHzyR9SAph9eqk76gKK2JSQmZARC2zRC81JC2QTtxD0ARU5qTS25gIGw=="
+    },
+    "buffer": {
+      "version": "5.0.7",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.0.7.tgz",
+      "integrity": "sha512-NeeHXWh5pCbPQCt2/6rLvXqapZfVsqw/YgRgaHpT3H9Uzgs+S0lSg5SQzouIuDvcmlQRqBe8hOO2scKCu3cxrg==",
+      "requires": {
+        "base64-js": "1.2.1",
+        "ieee754": "1.1.8"
+      }
+    },
+    "emitter-component": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/emitter-component/-/emitter-component-1.1.1.tgz",
+      "integrity": "sha1-Bl4tvtaVm/RwZ57avq95gdEAOrY="
+    },
+    "iconv-lite": {
+      "version": "0.4.19",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.19.tgz",
+      "integrity": "sha512-oTZqweIP51xaGPI4uPa56/Pri/480R+mo7SeU+YETByQNhDG55ycFyNLIgta9vXhILrxXDmF7ZGhqZIcuN0gJQ=="
+    },
+    "ieee754": {
+      "version": "1.1.8",
+      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.8.tgz",
+      "integrity": "sha1-vjPUCsEO8ZJnAfbwii2G+/0a0+Q="
+    },
+    "stream": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/stream/-/stream-0.0.2.tgz",
+      "integrity": "sha1-f1Nj8Ff2WSxVlfALyAon9c7B8O8=",
+      "requires": {
+        "emitter-component": "1.1.1"
+      }
+    }
+  }
+}

package.json

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+{
+  "name": "escpos-printer-toolkit",
+  "version": "1.0.8",
+  "description": "点单宝打印机指令定义",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/wanxsb/escpos-printer-toolkit.git"
+  },
+  "keywords": [
+    "printer",
+    "esc/pos"
+  ],
+  "author": "shenzhen candongli corp.",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/wanxsb/escpos-printer-toolkit/issues"
+  },
+  "homepage": "https://github.com/wanxsb/escpos-printer-toolkit#readme",
+  "dependencies": {
+    "buffer": "^5.0.7",
+    "iconv-lite": "^0.4.19",
+    "stream": "0.0.2"
+  }
+}