file-loop

Install

npm install --save file-loop

News

file-loop now finds directories, sub-directories, and files in those sub-directories.

There is also the new path fields, and root returned by the promise.

Other than that the api is basically the same.

Usage

Copy a bunch of javascript files using co, and cpr-omen:

var finder = require('file-loop'),
    co = require('co'),
    copy = require('cpr-omen'),
    path = require('path');

co(function * (){
    var find = yield finder(['*.js']), file;

    while(file = yield find()){
        yield copy(file.path, path.join('dest', file.name));
    }
});

Understanding the code

co(function * (){
    //Calling finder returns a promise that resolves to a function
    //which is assigned to the variable find.
    var find = yield finder(['*.js']),
        file;

    //Calling find returns a promise that resolves to an object.
    while(file = yield find()){
        //The fields
        //file.name = the file name
        //file.path = the full path of the file
        //file.stats = the stats for the file
        //file.root = the cwd of the file
        yield copy(file.path, path.join('dest', file.name));
    }
});

Though these examples don't show it the lib co returns a promise.

API

finder(array, options) -> promise

Returns a promise that resolves to a function.

The array passed to finder can be one of these string values:

• file name
• regular expression
• glob string

options

Options should be an object with these fields:

options.ignore = Array

An array of files to not include in the set of found files. These are the same value types as the first argument to the finder function.

options.cwd = String

The directory to find files in. The default is process.cwd.

Look at multimatcher for more information.

find() -> promise

Returns a promise that resolves to an object with these fields.

• file.name = the basename of the file
• file.path = the full path of the file
• file.stats = the stats for the file
• file.root = the cwd of the file

When there are no more files then the promise resolves to null which will stop a loop.

Possible Usage

If async/await is an option available to you then you can do this:

var finder = require('file-loop'),
    co = require('co'),
    copy = require('cpr-omen'),
    path = require('path');

async function copyScripts (){
    let find = await finder(['*.js']);

    while(let file = await find()){
        await copy(file.path, path.join('dest', file.name));
    }
}

copyScripts();

Happy coding!