forked from nodejitsu/docs
-
Notifications
You must be signed in to change notification settings - Fork 0
/
fs2.js
199 lines (156 loc) · 3.91 KB
/
fs2.js
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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
//
// fs2.js
//
var fs2 = exports;
var fs = require('fs'),
path = require('path'),
mkdirp = require('mkdirp'),
traverse = require('traverse'),
Hash = require('hashish'),
findit = require('findit');
//
// Transform array into flat object
// Uses as a helper.
//
fs2.filesArrayToObject = function(files, resolve){
var _files = {};
files.forEach(function(file){
var contents = '';
if (resolve) {
//
// Remark: also read the contents of the file
// and set it in memory on JSON object as binary data
//
var stat = fs.statSync(file);
if (stat.isDirectory()) {
contents = { "isDirectory": true };
} else {
contents = fs.readFileSync(file);
}
}
_files[file] = contents;
});
return _files;
}
//
// Convert flat object of file paths into nested JSON object
//
fs2.filesToTree = function(files){
files = files.reduce(function (acc, file) {
var ps = file.split('/');
ps = ps.filter(function (e) {
var isdot = (e === ".");
var isUndef = (e === "undefined");
if (isUndef) { console.log("undefined from "+file); }
return !isdot && !isUndef;
});
ps.splice(0,1);
traverse(acc).set(ps, {});
return acc;
}, {});
// why is this happening?
delete files.undefined;
return files;
}
// I want to build up a directory tree to use for the table of contents.
fs2.dirToTree = function (dir) {
//Very similar to filesToTree. Builds your basic nested deal.
var _tree = Object.keys(dir).reduce(function (acc, p) {
var ps = (p).replace("//", "/").split("/");
traverse(acc).set(ps, {});
return acc;
}, {});
// we need some array in order to impose an ordering.
var ordered = function ordered (tree) {
var hash = Hash(tree).map(function (v) {
var files = [];
// order-ify the next layer down
ordered(v).forEach(function(o) {
files.push(o);
});
return files;
}).items;
var _tree = [];
Object.keys(hash).filter(function (k) {
if (k === "") {
console.log("One of the hash values is \"\". This should not be happening.");
return false;
}
return true;
}).forEach(function(k) {
var obj = {};
obj[k] = hash[k];
_tree.push(obj);
});
return _tree;
}
_tree = ordered(_tree);
// rebuilding the filepath
_tree = traverse(_tree).map( function (e) {
if (this.isLeaf) {
var p = this.path.filter(function (i) {
return isNaN(Number(i));
}).join("/");
if (dir[p]) {
return dir[p];
} else {
return p;
}
}
else {
return e;
}
});
return _tree;
}
//
// Recursively read directory into flat JSON object
// arguments: path, resolve, filter
//
fs2.readDir = function (p, resolve, filter, cb) {
if (!filter) {
cb = resolve;
resolve = false;
} else if (!cb) {
cb = filter;
filter = null;
}
var files = [];
// finder.find doesn't "do" errors-to-cb
try {
var finder = findit.find(p, function (f) {
files.push(f);
});
finder.on("end", function () {
if (typeof filter === 'function') {
files = files.filter(filter);
}
cb(null, fs2.filesArrayToObject(files, resolve));
});
} catch (e) {
cb(e);
}
};
// Syncronous version of above.
fs2.readDirSync = function (p, resolve, filter) {
var files = findit.sync(p);
if( typeof filter === 'function') {
//
// Apply the fileMap method to the contents of each file
//
files = files.filter(filter);
}
return fs2.filesArrayToObject(files, resolve);
};
//
// Forces a file write by using mkdirp to recurisvely build directories
//
fs2.writeFile = function(filePath, contents, callback) {
var fileDir = path.dirname(filePath);
mkdirp(fileDir, 0755, function(err){
if(err){
callback(err);
}
fs.writeFile(filePath, contents, callback);
});
};