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var fs = require('fs');
var path = require('path');
/*
* Start state, single and multiline comment states
*/
var START_S = 0;
var SINGLE_S = 1;
var MULTI_S = 2;
/*
* Tokens
*/
var NL = '\n';
var EMPTY = '';
var ESCAPE = '\\';
var START_COMMENT = END_COMMENT = '/';
var OPEN_COMMENT = CLOSE_COMMENT = '*';
var DQUOTE = '"';
// var SQUOTE = "'";
/*
* Strip single and multiline comments
*/
var strip = function(input) {
var current;
var next;
var state = START_S;
var output = EMPTY;
var string = false;
for (var i = 0; i < input.length; i++) {
current = input.charAt(i);
next = input.charAt(i + 1);
if (START_S === state) {
if (DQUOTE === current) {
if(ESCAPE !== input.charAt(i - 1)) {
string = !string;
}
}
}
/*
* Inside string literal?
*/
if (!string) {
switch(state) {
case START_S:
if(START_COMMENT === current) {
switch(next) {
case START_COMMENT:
state = SINGLE_S;
i++;
break;
case OPEN_COMMENT:
state = MULTI_S;
i++;
break;
}
}
break;
case SINGLE_S:
if(NL === current) {
state = START_S;
}
break;
case MULTI_S:
if(CLOSE_COMMENT === current) {
if(END_COMMENT === next) {
state = START_S;
current = EMPTY;
i++;
}
}
break;
}
if (START_S !== state) {
current = EMPTY;
}
}
output = output + current;
}
return output;
}
var jReadSync = function(file) {
try {
return JSON.parse(strip(fs.readFileSync(file, 'utf8')));
} catch(e) {
return null;
}
}
var fReadSync = function(file, encoding) {
try {
return fs.readFileSync(file, encoding || 'utf8');
} catch(e) {
return null;
}
}
/*
* Return array of subdirs
*/
var readSubDirs = function(dir) {
var files = fs.readdirSync(dir);
var dirs = [];
for(var i = 0; i < files.length; i++) {
if(fs.statSync(dir + '/' + files[i]).isDirectory()) {
dirs.push(files[i]);
}
}
return dirs;
}
var fileRead = function(file) {
if(file.match(/\.js$/)) {
return require(file);
} else if(file.match(/\.json$/)) {
return jReadSync(file);
}
return fReadSync(file);
}
var dirFactory = function(that) {
return (function(file) {
this.__root = path.resolve(that.__root);
if(file) {
return fileRead(path.join(this.__root, file));
} else {
var dirs = readSubDirs(this.__root);
for(var i = 0; i < dirs.length; i++) {
this[dirs[i]] = (function(self) {
return new dirFactory(self);
}) ({__root: path.join(this.__root, dirs[i])});
}
}
return this;
}).bind(this);
}
module.exports = function(root) {
this.__root = root || process.cwd();
return new dirFactory(this);
}