File: index.js

package info (click to toggle)
node-brfs 1.6.1-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 376 kB
  • sloc: makefile: 15; sh: 6
file content (151 lines) | stat: -rw-r--r-- 4,194 bytes parent folder | download
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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
var staticModule = require('static-module');
var quote = require('quote-stream');
var through = require('through2');
var fs = require('fs');
var path = require('path');
var resolve = require('resolve');

module.exports = function (file, opts) {
    if (/\.json$/.test(file)) return through();
    
    function resolver (p) {
        return resolve.sync(p, { basedir: path.dirname(file) });
    }
    var vars = {
        __filename: file,
        __dirname: path.dirname(file),
        require: { resolve: resolver }
    };
    if (!opts) opts = {};
    if (opts.vars) Object.keys(opts.vars).forEach(function (key) {
        vars[key] = opts.vars[key];
    });
    
    var sm = staticModule(
        {
            fs: {
                readFileSync: readFileSync,
                readFile: readFile,
                readdirSync: readdirSync,
                readdir: readdir
            }
        },
        {
            vars: vars,
            varModules: { path: path },
            parserOpts: opts && opts.parserOpts,
            sourceMap: opts && (opts.sourceMap || opts._flags && opts._flags.debug)
        }
    );
    return sm;
    
    function readFile (file, enc, cb) {
        if (typeof enc === 'function') {
            cb = enc;
            enc = null;
        }
        if (enc && typeof enc === 'object' && enc.encoding) {
            enc = enc.encoding;
        }
        var isBuffer = false;
        if (enc === null || enc === undefined) {
            isBuffer = true;
            enc = 'base64';
        }
        
        var stream = through(write, end);
        stream.push('process.nextTick(function(){(' + cb + ')(null,');
        if (isBuffer) stream.push('Buffer(');
        
        var s = fs.createReadStream(file, { encoding: enc });
        s.on('error', function (err) { sm.emit('error', err) });
        return s.pipe(quote()).pipe(stream);
        
        function write (buf, enc, next) {
            this.push(buf);
            next();
        }
        function end (next) {
            if (isBuffer) this.push(',"base64")');
            this.push(')})');
            this.push(null);
            sm.emit('file', file);
            next()
        }
    }
    
    function readFileSync (file, enc) {
        var isBuffer = false;
        if (enc === null || enc === undefined) {
            isBuffer = true;
            enc = 'base64';
        }
        if (enc && typeof enc === 'object' && enc.encoding) {
            enc = enc.encoding;
        }
        var stream = fs.createReadStream(file,  { encoding: enc })
            .on('error', function (err) { sm.emit('error', err) })
            .pipe(quote()).pipe(through(write, end))
        ;
        if (isBuffer) {
            stream.push('Buffer(');
        }
        return stream;
        
        function write (buf, enc, next) {
            this.push(buf);
            next();
        }
        function end (next) {
            if (isBuffer) this.push(',"base64")');
            this.push(null);
            sm.emit('file', file);
            next();
        }
    }
    
    function readdir(path, cb) {
        var stream = through(write, end);

        stream.push('process.nextTick(function(){(' + cb + ')(null,');
        fs.readdir(path, function (err, src) {
            if (err) {
                stream.emit('error', err);
                return;
            }
            stream.push(JSON.stringify(src));
            stream.end(')})');
        });
        return stream;

        function write (buf, enc, next) {
            this.push(buf);
            next();
        }
        function end (next) {
            this.push(null);
            next();
        }
    }

    function readdirSync (path) {
        var stream = through(write, end);
        fs.readdir(path, function (err, src) {
            if (err) {
                stream.emit('error', err);
                return;
            }
            stream.end(JSON.stringify(src));
        });
        return stream;

        function write (buf, enc, next) {
            this.push(buf);
            next();
        }
        function end (next) {
            this.push(null);
            next();
        }
    }
};