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可运行的版本
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baka397 committed Feb 24, 2016
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103 changes: 103 additions & 0 deletions README.md
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chn-escpos
=

## 介绍

chn-escpos是一个nodejs的window POS机打印程序,使用`printer`的C组件与打印机通信,使用ESC/POS命令控制打印机

## 安装

```
npm install chn-escpos --save
```

## 测试
你可以使用chn-escpos自带的测试程序进行测试
```
cd node_modules/chn-escpos
npm test
```
测试程序默认监听2520端口,你可以通过向`http://127.0.0.1:2520?action=print&printer=`POST raw数据进行打印测试(推荐使用POSTMAN进行测试)
```
POST HTTP/1.1
Host: 127.0.0.1:2520?action=print&printer=
Content-Type: application/javascript
Cache-Control: no-cache
Postman-Token: 3ae7055f-8dd9-5386-3cfe-4355d7b7645a
[
{
"id": "1",//打印任务ID
"group_id": "1",//打印队列ID
"printer": "XP-80C",//打印机别名
"content": "<% setAlign:c %>测试居中"
}
]
```
## 使用方法
```
var printer=require('chn-escpos'),
printer_name='XP-80C';
new printer(printer_name,function(err,msg){
//调用this方法进行打印
});
```
### 打印方法
####text(text,[inline]) 打印文字内容
string `text`:打印内容,单行数据,如果超出自动换行
boolen `inline`:是否自动换行,如果为true,则不会自动换行
```
this.text('测试打印');
```

####line(number) 空行
number `number`:空行数
```
this.line(2);
```

####setAlign(align) 设置对齐
string `align`:`C/L/R`分别代表居中/居左/居右,不区分大小写
```
this.setAlign('c').text('这个是居中文字');
```

###setLineheight(hex) 设置行高
string `hex`:16进制数字,如'\x05'
```
this.setLineheight('\x05');
```

###setStyle(type) 设置样式
string `type`:`B/U/U2/BU/BU2`分别代表加粗/下划线/下划线样式2/加粗+下划线/加粗+下划线样式2,不区分大小写
```
this.setStyle('b').text('加粗');
```

###setSize(size) 设置文字大小
number `type`:2/1/null,2代表2倍字体,1/null均为正常
```
this.setSize(2).text('大字体');
```

###compile(string) 编译
string `string`:编译整个字符串
使用<% 方法名:[参数] %>进行快速设置`\n`或`\r`表示换行.
```
this.compile('<% setAlign:c %><% setSize:2 %>这里开始是放大\n<% setSize:1 %>恢复正常大小');
```

###print(callback) 打印当前内容
function `callback`:回传err以及msg,当成功时,err为null
```
this.print(function(err,msg){
if(err){
console.log('打印出错,回传信息:');
}
console.log(msg);
});
```
###empty() 清空当前内容
```
this.empty();
```
152 changes: 152 additions & 0 deletions index.js
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/**
* 测试请求
*/

var url = require("url");
var querystring = require("querystring");

/**
* 设置打印状态
* @param {Function} callback 回调函数，当打印成功后执行该函数
*/
function setPrinterStatus(callback){
this.return_status=[];//返回状态
this.return_list=[];//需返回的列表
if(callback){
this.callback=callback;
}
}
setPrinterStatus.prototype={
/**
* 增加状态列表
* @param {object} data 增加数据
* @return {number} 列表编号
*/
addList:function(data){
if(data){
this.return_list.push(data);
}else{
this.return_list.push({});
}
return this.return_list.length-1;
},
/**
* 更新列表
* @param {number} number 列表编号
* @param {object} data 更新数据
* @return {boolen} 是否已全部更新
*/
updateList:function(number,data){
this.return_status.push(1);
for (var i in data) {
if (data.hasOwnProperty(i)) {
this.return_list[number][i] = data[i];
}
}
if(this.return_status.length===this.return_list.length){
return true;
}else{
return false;
}
},
/**
* 获取列表
* @return {object} 列表数据
*/
getList:function(){
return this.return_list;
},
callEnd:function(){
if(this.callback){
this.callback.call(this);
}
}
}

//http请求响应
var app = require('http').createServer(function(req,res){

var objectUrl = url.parse(req.url);
var objectQuery = querystring.parse(objectUrl.query);
//接受数据
var chunk='';
req.on('data',function(data){
chunk+=data;
});
//回传内容
req.on('end', function(){
var data={
status:0
}
if(!objectQuery.action){
data.msg='没有指定动作';
}
else if(chunk){
switch(objectQuery.action){
case 'print':
var printer=require('./lib/printer.js');
var print_data=JSON.parse(chunk);
//生成回调函数
var print_status=new setPrinterStatus(function(){
data={
status:1,
msg:this.getList()
}
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify(data));
});
//执行批量打印
for(var i=0;i<print_data.length;i++){
var list_number=print_status.addList({
'id':print_data[i].id,
'group_id':print_data[i].group_id
});
//添加返回列表
new printer(print_data[i].printer,function(err,msg){
//查找打印机出错
if(err){
print_status.updateList(list_number,{
status:0,
msg:msg+':'+err.toString()
});
//查找打印机成功
}else{
//开始打印
this.compile(print_data[i].content).print(function(err,msg){
//打印失败
if(err){
print_status.updateList(list_number,{
status:0,
msg:msg+':'+err.toString()
});
//打印成功
}else{
print_status.updateList(list_number,{
status:1,
msg:msg
});
}
});
}
});
}
print_status.callEnd();
break;
default:
data={
status:0,
msg:'错误的动作'
}
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify(data));
}
}else{
data.msg='没有数据';
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify(data));
}
});
});
app.listen(process.env.PORT || 2520,function(){
console.log('打印测试程序已运行,请参考github说明测试打印');
});
54 changes: 54 additions & 0 deletions lib/commands.js
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//
// SEE: https://www.sparkfun.com/datasheets/Components/General/Driver%20board.pdf
//

module.exports = {
INITIAL_PRINTER : '\x1B\x40' , //Initial paper
NEW_LINE : '\x0A' , //Add new line
PAPER_CUTTING : '\x1d\x56\x41', //Cut paper
LINE_HEIGHT : '\x1b\x32', //Normal line height
LINE_HEIGHT_B : '\x1b\x33\x6e', //Normal line height large
CHN_TEXT : '\x1b\x52\x0f', //CHN text
// text style
TXT_NORMAL : '\x1b\x21\x00', // Normal text
TXT_2HEIGHT : '\x1d\x21\x01', // Double height text
TXT_2WIDTH : '\x1d\x21\x10', // Double width text

TXT_UNDERL_OFF : '\x1b\x2d\x00', // Underline font OFF
TXT_UNDERL_ON : '\x1b\x2d\x01', // Underline font 1-dot ON
TXT_UNDERL2_ON : '\x1b\x2d\x02', // Underline font 2-dot ON
TXT_BOLD_OFF : '\x1b\x45\x00', // Bold font OFF
TXT_BOLD_ON : '\x1b\x45\x01', // Bold font ON

TXT_ALIGN_L : '\x1b\x61\x00', // Left justification
TXT_ALIGN_C : '\x1b\x61\x01', // Centering
TXT_ALIGN_R : '\x1b\x61\x02', // Right justification

//字体
TXT_FONT_A : '\x1b\x4d\x00', // Font type A
TXT_FONT_B : '\x1b\x4d\x01', // Font type B
TXT_FONT_C : '\x1b\x4d\x02', // Font type C
TXT_FONT_D : '\x1b\x4d\x48', // Font type D
TXT_FONT_E : '\x1b\x4d\x31', // Font type E

//barcode
BARCODE_TXT_OFF : '\x1d\x48\x00' , // HRI barcode chars OFF
BARCODE_TXT_ABV : '\x1d\x48\x01' , // HRI barcode chars above
BARCODE_TXT_BLW : '\x1d\x48\x02' , // HRI barcode chars below
BARCODE_TXT_BTH : '\x1d\x48\x03' , // HRI barcode chars both above and below

BARCODE_FONT_A : '\x1d\x66\x00' , // Font type A for HRI barcode chars
BARCODE_FONT_B : '\x1d\x66\x01' , // Font type B for HRI barcode chars

BARCODE_HEIGHT : '\x1d\x68\x64' , // Barcode Height [1-255]
BARCODE_WIDTH : '\x1d\x77\x03' , // Barcode Width [2-6]

//一维码
BARCODE_UPC_A : '\x1d\x6b\x00' , // Barcode type UPC-A
BARCODE_UPC_E : '\x1d\x6b\x01' , // Barcode type UPC-E
BARCODE_EAN13 : '\x1d\x6b\x02' , // Barcode type EAN13
BARCODE_EAN8 : '\x1d\x6b\x03' , // Barcode type EAN8
BARCODE_CODE39 : '\x1d\x6b\x04' , // Barcode type CODE39
BARCODE_ITF : '\x1d\x6b\x05' , // Barcode type ITF
BARCODE_NW7 : '\x1d\x6b\x06' , // Barcode type NW7
}
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