escpos-printer-toolkit
Version:
311 lines (302 loc) • 11.4 kB
JavaScript
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();
// }