takenspc/gulp-convert-newline

"use strict";
var gutil = require("gulp-util");
var iconv = require("iconv-lite");
var through = require("through2");
var convertNewline = require("convert-newline");

var PACKAGE_NAME = "gulp-convert-newline";

module.exports = function(options) {
    options = options || {};

    var newline = options.newline || "lf";
    var encoding = options.encoding;
    var converter = convertNewline(newline, encoding);

    return through.obj(function(file, enc, cb) {
        if (file.isNull()) {
            this.push(file);
            cb();
            return;
        }

        if (file.isStream()) {
            try {
                if (encoding) {
                    file.contents = file.contents
                        .pipe(iconv.decodeStream(encoding))
                        .pipe(converter.stream())
                        .pipe(iconv.encodeStream(encoding));
                } else {
                    file.contents = file.contents
                        .pipe(converter.stream());
                }
                this.push(file);
            } catch (err) {
                this.emit("error", new gutil.PluginError(PACKAGE_NAME, err));
            }
        }

        if (file.isBuffer()) {
            try {
                file.contents = converter.buffer()(file.contents);
                this.push(file);
            } catch (err) {
                this.emit("error", new gutil.PluginError(PACKAGE_NAME, err));
            }
        }
        cb();
    });
};