Question

How do I use nodejs to write a file, if the file is in a directory that may or may not exist?

It’s kind of similar to this question:

node.js Write file with directories?

Only I need a solution that creates the file while node-fs only makes directories.

Answer 1

From FileUtils:

Modify the functions to satisfy yours needs! But seriously, use a module instead of writing your own!

createDirectory(): Creates a directory. If any of the previous directories that form the path don’t exist, they are created. Default permissions: 0777.

File.prototype.createDirectory = function (cb){
    if (cb) cb = cb.bind (this);
    if (!this._path){
        if (cb) cb (NULL_PATH_ERROR, false);
        return;
    }
    if (!canWriteSM (this._usablePath)){
        if (cb) cb (SECURITY_WRITE_ERROR, false);
        return;
    }

    var mkdirDeep = function (path, cb){
        path.exists (function (exists){
            if (exists) return cb (null, false);

            FS.mkdir (path.getPath (), function (error){
                if (!error) return cb (null, true);

                var parent = path.getParentFile ();
                if (parent === null) return cb (null, false);

                mkdirDeep (parent, function (error, created){
                    if (created){
                        FS.mkdir (path.getPath (), function (error){
                            cb (error, !error);
                        });
                    }else{
                        parent.exists (function (exists){
                            if (!exists) return cb (null, false);

                            FS.mkdir (path.getPath (), function (error){
                                cb (error, !error);
                            });
                        });
                    }
                });
            });
        });
    };

    mkdirDeep (this.getAbsoluteFile (), function (error, created){
        if (cb) cb (error, created);
    });
};

createNewFile(): Creates a new file. Default permissions: 0666.

File.prototype.createNewFile = function (cb){
    if (cb) cb = cb.bind (this);
    if (!this._path){
        if (cb) cb (NULL_PATH_ERROR, false);
        return;
    }

    if (!canWriteSM (this._usablePath)){
        if (cb) cb (SECURITY_WRITE_ERROR, false);
        return;
    }

    var path = this._usablePath;
    PATH.exists (path, function (exists){
        if (exists){
            if (cb) cb (null, false);
        }else{
            var s = FS.createWriteStream (path);
            s.on ("error", function (error){
                if (cb) cb (error, false);
            });
            s.on ("close", function (){
                if (cb) cb (null, true);
            });
            s.end ();
        }
    });
};