Convert all PHP/HTML files within a specified folder (and its subfolders) to use 4 spaces over tabs and `\n` for all line endings - *LOCAL*

gulpfile.js

'use strict';

var gulp = require('gulp');

var soften     = require('gulp-soften'),
    argv       = require('yargs').argv,
    eol        = require('gulp-eol'),
    trimlines  = require('gulp-trimlines'),
    pathExists = require('path-exists'),
    gulpIgnore = require('gulp-ignore')
;

var pageFileTypeArray = ['php'],
    pageFileTypes = pageFileTypeArray.join(',');

gulp.task('clean', function(){
    var isFolder = (argv.folder) ? true : false;

    if (isFolder) {
        var path = argv.folder;

        if (pathExists(path)) {
            var d = new Date();
            var t = ('0' + d.getHours()).slice(-2) + ':' + ('0' + d.getMinutes()).slice(-2) + ':' + ('0' + d.getSeconds()).slice(-2);
            console.log('[' + t + '] Processing path: ' + path);

            if (pageFileTypeArray.length > 1) {
                pageFileTypes = '{' + pageFileTypes + '}';
            }

            return gulp.src([path + '/**/*.' + pageFileTypes], { dot: true })
                .pipe(gulpIgnore.exclude('**/node_modules/**'))
                .pipe(gulpIgnore.exclude('**/vendor/**'))
                .pipe(soften(4)) //4 spaces
                .pipe(eol('\n', true))
                .pipe(trimlines({ leading: false }))
                .pipe(gulp.dest(path + '/'))
            ;
        } else {
            console.error('Error: Path not found at ' + path);
        }
    } else {
        console.error('Error: --folder flag not set');
    }
});

gulp.task('default', function(){
    return gulp.start('clean');
});

// USAGE:
// npm install gulp gulp-soften yargs gulp-eol gulp-trimlines path-exists gulp-ignore
// gulp --folder public_html OR gulp --folder public_html/styles

ℹ️

$ npm install gulp gulp-soften yargs gulp-eol gulp-trimlines path-exists gulp-ignore
$ gulp --folder public_html