| 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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247 | 1
1
2
1
1
2
2
2
2
1
9
9
9
9
9
9
9
9
9
9
1
1
1
9
9
9
9
9
9
9
9
9
9
81
81
81
1
36
36
27
9
1
9
9
9
1
93
93
93
93
93
93
93
93
93
93
93
553
275
275
93
1
27
27
27
27
27
27
27
27
54
54
54
162
162
54
27
1
9
9
9
1
81
81
1
75
66
66
66
66
66
123
66
123
123
123
123
66
66
66
9
81
75
75
72
3
6
1
123
3
3
11
8
3
1
66
1
66
1
288
| var fs = require("fs"),
dir = require("node-dir"),
path = require("path"),
os = require("os"),
deepExtend = require("node.extend"),
xml2js = require("xml2js-expat"),
_ = require("underscore");
module.exports = function() {
return new Resourcer();
};
var __gR = null; //Global resources, so they're kept
var Resourcer = function() {
this.load_path = "";
this.knownFormats = {"json": "loadJsonResource",
"xml": "loadXMLResource",
"csv": "loadCSVResource"};
this.R = __gR || {};
//Default options
this.csvOpts = {
fieldSplitter: ",",
firstRowFieldNames: true
};
};
Resourcer.prototype.init = function(opts, cb) {
var dirname = process.cwd() + path.sep;
Iif(opts.path[0] == path.sep) { //Absolute path
this.load_path = this.normalizePath(opts.path);
} else {
this.load_path = opts.path = (dirname + this.normalizePath(opts.path));
}
var regExp = ".*\\" + path.sep + "$"
var endsInSlashExp = new RegExp(regExp, "g");
Iif(!this.load_path.match(endsInSlashExp)) {
this.load_path += path.sep;
}
this.R = {};
this.knownFormats = _.extend(this.knownFormats, opts.extraFormats);
this.verbose = opts.verbose || false;
if(opts.csvOpts) {
Eif(opts.csvOpts.fieldSplitter != null) {
this.csvOpts.fieldSplitter = opts.csvOpts.fieldSplitter;
}
Iif(opts.csvOpts.firstRowFieldNames != null) {
this.csvOpts.firstRowFieldNames = opts.csvOpts.firstRowFieldNames;
}
}
var self = this;
dir.paths(this.load_path, function(err, paths) {
Iif(err) {
console.log("Error reading load path: " + err);
return;
}
var delayedCB = null;
Eif(typeof cb == "function") {
delayedCB = _.after(paths.files.length, function() {
__gR = self.R; //All resources have been loaded, so updating the global object
cb();
});
}
var rootPath = self.load_path;
_.each(paths.files, function(file) {
self.loadResource(rootPath, file);
Eif(delayedCB) {
delayedCB();
}
});
});
};
//JSON
Resourcer.prototype.loadJsonResource = function(content, cb) {
try {
var json = JSON.parse(content);
cb(null, json);
} catch(e) {
cb(e, null);
}
};
//XML
Resourcer.prototype.loadXMLResource = function(content, cb) {
var p = new xml2js.Parser(function(result, error) {
cb(error, result);
});
Iif(!p.parseString(content)) {
cb(p.getError(), null);
}
};
//CSV
Resourcer.prototype.splitFields = function(text) {
text = text.replace(/""/g, "[||]"); //We change the double quotes into something different
//Keep empty fields empty
var emptyFieldPatt = new RegExp(this.csvOpts.fieldSplitter + "[\\s]*" + this.csvOpts.fieldSplitter,"g");
text = text.replace(emptyFieldPatt, "[--]");
//Keep empty fields empty
var startEmptyFieldsPatt = new RegExp("^" + this.csvOpts.fieldSplitter,"g");
text = text.replace(startEmptyFieldsPatt, "[--]" + this.csvOpts.fieldSplitter);
//Keep empty fields empty
var endEmptyFieldPatt = new RegExp(this.csvOpts.fieldSplitter + "$","g");
text = text.replace(endEmptyFieldPatt, this.csvOpts.fieldSplitter + "[--]");
//RegExp that'll split the fields accordingly
var patt = new RegExp('"([^"]*)"|([^"' + this.csvOpts.fieldSplitter + ']*)', "g");
var matches = text.match(patt);
var self = this;
var parts = _.filter(matches,function(m) {
return (m.trim().length > 0 && m.trim() != self.csvOpts.fieldSplitter);
}).map(function(m) {
m = m.replace(/"/g, "").replace(/\[\|\|\]/g, '"').replace(/\[--\]/, ""); //Remove single quotes and add the required single quotes
return m.trim();
});
return parts;
};
Resourcer.prototype.loadCSVResource = function(content, cb) {
var rows = content.split(os.EOL);
var self = this;
var startingRow = 0;
var fieldNames = this.splitFields(rows[0]);
results = [];
Eif(this.csvOpts.firstRowFieldNames) {
startingRow = 1;
} else {
var rowCount = fieldNames.length;
fieldNames = [];
for(var i = 0; i < rowCount; i++) {
fieldNames.push("field" + i);
}
}
for(var i = startingRow; i < rows.length; i++) {
var cols = this.splitFields(rows[i]);
var tmpDummy = {};
_.each(fieldNames, function(name, idx) {
var fieldName = self.sanitizeString(name).trim();
tmpDummy[fieldName] = (cols[idx]) ? cols[idx].trim() : "";
});
results.push(tmpDummy);
}
cb(null, results);
};
Resourcer.prototype.normalizePath = function(p) {
p = p.replace(/\//g, path.sep);
p = p.replace(/\\/g, path.sep);
return p;
};
Resourcer.prototype.loadResource = function(rootPath, filePath) {
var ext = path.extname(filePath).replace(".","");
var self = this;
function processLoadedResource(err, json) {
if(!err) {
var relativePath = filePath.replace(rootPath, "");
var relPathParts = relativePath.split(path.sep);
var focus = {};
var jsonParent = focus;
_.each(relPathParts, function(part) {
if(part.indexOf(".") != -1) {
part = path.basename(part, ext);
}
part = self.sanitizeString(part);
Eif(!focus[part]) {
focus[part] = self.makePathNode();
}
focus = focus[part];
});
var resource = self.makeResource(json, resourceContent);
focus = _.extend(focus, resource);
self.R = deepExtend(true, self.R, jsonParent);
} else {
Iif(self.verbose) {
console.log("Invalid format for resource: " + filePath);
console.log(err);
}
}
}
if(this.knownFormats[ext]) {
var resourceContent = fs.readFileSync(filePath, "utf8");
if(typeof this.knownFormats[ext] == "string") {
this[this.knownFormats[ext]](resourceContent, processLoadedResource);
} else {
this.knownFormats[ext](resourceContent, processLoadedResource);
}
} else {
Iif(self.verbose) {
console.log("Unkown format, so ignoring resource: " + filePath);
}
}
};
Resourcer.prototype.makePathNode = function() {
return {
listResources: function() {
var list = [];
for(prop in this) {
if(typeof this[prop] != "function") {
list.push(prop);
}
}
return list;
}
}
};
Resourcer.prototype.makeResource = function(json, original) {
var methods = {
original_content: original,
original: function() {
return this.original_content;
}
}
return _.extend(json, methods);
};
Resourcer.prototype.sanitizeString = function(str) {
return str.replace(/[ -]+/g, "_").replace(/[\/><\\:*\|\"!\.]+/g, "");
};
|