rss-api/jkl-dumper.js at master · shafferjohn/rss-api · 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
Dumper = function () {
    return this;
};

Dumper.prototype.dump = function ( data, offset ) {
    if ( typeof(offset) == "undefined" ) offset = "";
    var nextoff = offset + "  ";
    switch ( typeof(data) ) {
    case "string":
        return '"'+this.escapeString(data)+'"';
        break;
    case "number":
        return data;
        break;
    case "boolean":
        return data ? "true" : "false";
        break;
    case "undefined":
        return "null";
        break;
    case "object":
        if ( data == null ) {
            return "null";
        } else if ( data.constructor == Array ) {
            var array = [];
            for ( var i=0; i<data.length; i++ ) {
                array[i] = this.dump( data[i], nextoff );
            }
            return "[\n"+nextoff+array.join( ",\n"+nextoff )+"\n"+offset+"]";
        } else {
            var array = [];
            for ( var key in data ) {
                var val = this.dump( data[key], nextoff );
                key = '"'+this.escapeString( key )+'"';
                array[array.length] = key+": "+val;
            }
            if ( array.length == 1 && ! array[0].match( /[\n\{\[]/ ) ) {
                return "{ "+array[0]+" }";
            }
            return "{\n"+nextoff+array.join( ",\n"+nextoff )+"\n"+offset+"}";
        }
        break;
    default:
        return data;
        // unsupported data type
        break;
    }
};

Dumper.prototype.escapeString = function ( str ) {
    return str.replace( /\\/g, "\\\\" ).replace( /\"/g, "\\\"" );
};

//  ===============================================================


module.exports = new Dumper();