how can i create a folder structure using this json structure

{
  "europe": {
    "poland":{},
    "france":{},
    "spain":{},
    "greece":{},
    "UK":{},
    "germany":"txt"
  },
  "Asia": {
    "india":"xml"
  },
  "Africa":null
}

in such a way that

1. properties with object values bee folders
2. properties with string values are files and their values represent their extensions
3. properties with null values are files with no extension
4. nested objects bee nested folders

anyone know how to do this in nodejs?

how can i create a folder structure using this json structure

{
  "europe": {
    "poland":{},
    "france":{},
    "spain":{},
    "greece":{},
    "UK":{},
    "germany":"txt"
  },
  "Asia": {
    "india":"xml"
  },
  "Africa":null
}

in such a way that

1. properties with object values bee folders
2. properties with string values are files and their values represent their extensions
3. properties with null values are files with no extension
4. nested objects bee nested folders

anyone know how to do this in nodejs?

• javascript
• json
• node.js
• filesystems

• So Africa is a file, not a folder ? – adeneo Commented Jan 31, 2015 at 21:54
• Yes. Just a file without an extension. A folder is always represented with an object, which can be either empty or containing other nested objects – shanks Commented Jan 31, 2015 at 21:55

2 Answers 2

You'll have to recursively iterate and create folders and files.

Not tested, but something like this should be close

var fs  = require('fs');
var obj = {
    "europe": {
        "poland": {},
        "france": {},
        "spain": {},
        "greece": {},
        "UK": {},
        "germany": "txt"
    },
    "Asia": {
        "india": "xml"
    },
    "Africa": null
};

(function create(folder, o) {
    for (var key in o) {
        if ( typeof o[key] === 'object' && o[key] !== null) {
            fs.mkdir(folder + key, function() {
                if (Object.keys(o[key]).length) {
                    create(folder + key + '/', o[key]);
                }
            });
        } else {
            fs.writeFile(folder + key + (o[key] === null ? '' : '.' + o[key]));
        }
    }
})('/', obj);

FIDDLE

Update

I was also looking for a solution to create files and folders based on a JSON and found this interesting node module "node-jsondir"

Here is an example of how it works:

var jsondir = require('jsondir');

jsondir.json2dir({
    "-path": 'path/to/directory',
    "myfile": {
        "-content": 'Hello world!'
    },
    "mydir": {
        "a": {
            "b": {
                "c": {
                    "-type": 'd'
                }
            }
        },
        "1": {
            "2": {
                "3": {}
            }
        }
    }
}, function(err) {
    if (err) throw err;
});

Tested and it works.

Node module is https://www.npmjs./package/jsondir