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
|
var _ = require('lodash');
var util = require('util');
var color = require('bash-color');
var LEVELS = {
DEBUG: 0,
INFO: 1,
WARN: 2,
ERROR: 3,
DISABLED: 10
};
var COLORS = {
DEBUG: color.purple,
INFO: color.cyan,
WARN: color.yellow,
ERROR: color.red
};
module.exports = function(_write, logLevel) {
var logger = {};
var lastChar = '\n';
if (_.isString(logLevel)) logLevel = LEVELS[logLevel.toUpperCase()];
// Write a simple message
logger.write = function(msg) {
msg = msg.toString();
lastChar = _.last(msg);
return _write(msg);
};
// Format a message
logger.format = function() {
return util.format.apply(util, arguments);
};
// Write a line
logger.writeLn = function(msg) {
return this.write((msg || "")+"\n");
};
// Write a message with a certain level
logger.log = function(level) {
if (level < logLevel) return;
var levelKey = _.findKey(LEVELS, function(v) { return v == level; });
var args = Array.prototype.slice.apply(arguments, [1]);
var msg = logger.format.apply(logger, args);
if (lastChar == '\n') {
msg = COLORS[levelKey](levelKey.toLowerCase()+":")+" "+msg;
}
return logger.write(msg);
};
logger.logLn = function() {
if (lastChar != '\n') logger.write("\n");
var args = Array.prototype.slice.apply(arguments);
args.push("\n");
logger.log.apply(logger, args);
};
// Write a OK
logger.ok = function(level) {
var args = Array.prototype.slice.apply(arguments, [1]);
var msg = logger.format.apply(logger, args);
if (arguments.length > 1) {
logger.logLn(level, color.green('>> ') + msg.trim().replace(/\n/g, color.green('\n>> ')));
} else {
logger.log(level, color.green("OK"), "\n");
}
};
// Write an "FAIL"
logger.fail = function(level) {
return logger.log(level, color.red("ERROR")+"\n");
};
_.each(_.omit(LEVELS, 'DISABLED'), function(level, levelKey) {
levelKey = levelKey.toLowerCase();
logger[levelKey] = _.partial(logger.log, level);
logger[levelKey].ln = _.partial(logger.logLn, level);
logger[levelKey].ok = _.partial(logger.ok, level);
logger[levelKey].fail = _.partial(logger.fail, level);
});
return logger;
};
module.exports.LEVELS = LEVELS;
module.exports.COLORS = COLORS;
|
