node-thermal-printer/printer.js at master · SloInfinity/node-thermal-printer · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
var lwip = require('lwip');
var writeFile = require('write-file-queue')({
    retries : 1000 						// number of write attempts before failing
    , waitTime : 200 					// number of milliseconds to wait between write attempts
    //, debug : console.error 			// optionally pass a function to do dump debug information to
});
var config = undefined;
var printText = "";

module.exports = {
    init: function(type){
        if(type === 'star'){
            config = require('./starConfig');
        } else {
            config = require('./epsonConfig');
        }
        printText = "";
    },

    execute: function(){
        writeFile('/dev/usb/lp0', printText, function (err) {
            if (err) {
                console.log('Print failed', err);
            } else {
                console.log('Print done');
                printText = "";
            }
        });
    },
    cut: function(){
    	append(config.CTL_VT);
    	append(config.CTL_VT);
        append(config.PAPER_FULL_CUT);
        append(config.HW_INIT);
    },
    print: function(text){
    	append(text);
    },
    println: function(text){
    	append(text + "\n");
    },
    bold: function(enabled){
    	if(enabled) append(config.TXT_BOLD_ON);
    	else append(config.TXT_BOLD_OFF);
    },
    alignCenter: function (){
    	append(config.TXT_ALIGN_CT);
    },
    alignLeft: function (){
    	append(config.TXT_ALIGN_LT);
    },
    alignRight: function(){
    	append(config.TXT_ALIGN_RT);
    },
    setTypeFontA: function(){
    	append(config.TXT_FONT_A);
    },
    setTypeFontB: function(){
    	append(config.TXT_FONT_B);
    },
    setTextNormal: function(){
    	append(config.TXT_NORMAL);
    },
    setTextDoubleHeight: function(){
    	append(config.TXT_2HEIGHT);
    },
    setTextDoubleWidth: function(){
    	append(config.TXT_2WIDTH);
    },
    setTextQuadArea: function(){
    	append(config.TXT_4SQUARE);
    },
    drawLine: function(){
    	append(config.TXT_BOLD_ON);
    	append("\n-----------------------------------------------\n");
    	append(config.TXT_BOLD_OFF);
    },
    setLogos: function(fileNames) {

    }

};

var append = function(text){
	printText += text;
};

var intToHex = function(int){
	return "\\x" + int.toString(16);
};

var raw = function(text){
	writeFile('/dev/usb/lp0', text, function (err) {
	    if (err) {
	        console.log('Raw write failed', err);
	    } else {
	    	console.log('Raw done');
	    }
	});
};

String.prototype.parseHex = function(){
    return this.replace(/\\x([a-fA-F0-9]{2})/g, function(a,b){
        return String.fromCharCode(parseInt(b,16));
    });
};