blob: 05895fa400b77db0e8e53b56e39cba8f630f4065 (
plain)
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
|
'use strict';
const Utilities = require('../utilities');
/**
* Token formatter. Given a format string it will attempt to output
* a message.
*
* @memberof Formatters
* @implements IFormatter
* @class Token
*/
module.exports = class TokenFormatter {
constructor(config) {
/**
* The string to use as a template string. By default, any property
* inside double curly braces `{{likeThis}}` will be extracted from
* the object and replaced. If the object does not contain the
* property, it will leave it.
*
* @name formatString
* @instance
* @memberof Formatters.Token
* @type String
* @default '{{message}}'
*/
this.formatString = '{{message}}';
/**
* The regex rule to use to match the tokens.
*
* @name replaceRule
* @instance
* @memberof Formatters.Token
* @type RegExp
* @default /{{(.{1,255}?)}}/g
*/
this.replaceRule = /{{(.{1,255}?)}}/g;
/**
* Flag that specifies whether or not to use an isoDate when using
* `_timestamp`. If false it will output the raw timestamp.
*
* @name isoDate
* @instance
* @memberof Formatters.Token
* @type Boolean
* @default true
*/
this.isoDate = true;
this._ansiRe = /_ansi:.+/;
Object.assign(this, config || {});
}
/**
* Main entry point, it will read the incoming log object and convert
* all the tokens to their corresponding representation, finally
* returning the string.
*
* @function format
* @instance
* @memberof Formatters.Token
* @param {tCologneLog} log the log to format
* @return {String} the formatted object
*/
format(log) {
const escapeCode = String.fromCharCode(27);
return this.formatString.replace(this.replaceRule, (match, token) => {
if (token === '_timestamp' && this.isoDate) {
const date = new Date(Number(log._timestamp) / 1000000);
return date.toISOString();
}
if (token.match(this._ansiRe)) {
const ansiType = token.split(':')[1];
// Smartish coloring
if (ansiType === '_level') {
return escapeCode + Utilities.getAnsiCode(Utilities.getLevelAnsi(log._level));
}
return escapeCode + Utilities.getAnsiCode(ansiType);
}
return log[token] || match;
});
}
};
|
