ディレクトリ内のファイル全てを、拡張子以外全角に変換する。 　例）勤怠表_T01234_奥西.excel => 勤怠表＿Ｔ０１２３４＿奥西.txt

test-to_zenkaku_filenames.js

#!/bin/env node

var exec = require('child_process').exec,
    fs = require('fs'),
    path = require('path'),
    here = process.cwd();


(function (bin_name) {
    var resolve = path.resolve,
        mkdir = fs.mkdir;
    var bin = resolve(here, bin_name + '.js');
    var testDir = resolve(here, ['test', bin_name , new Date().getTime()].join('-'));
    mkdir(testDir, function (err) {
        if (err) console.error(err);
        var testFiles = [
            "すべて全角Ｎ１２３４＿.txt",
            "半角込みＮ１２３４＿B567789_.txt"
        ];
        testFiles
            .map(function (filename) {
                return resolve(testDir, filename);
            })
            .forEach(function (filepath) {
                fs.writeFileSync(filepath, 'ファイルの中身');
            });

        var command = ["node", bin, testDir].join(' ');
        exec(command, function (err, stdout, stderr) {
            if (err) console.error(err);
            if (stderr) console.error(stderr);
            console.log(stdout);
            fs.readdir(testDir, function (err, filenames) {
//                filenames = filenames.sort();
                console.log("filenames", filenames);
            });
        });
    });
})("to_zenkaku_filenames");

to_zenkaku_filenames.js

#!/bin/env node

var fs = require('fs'),
    path = require('path'),
    argv = process['argv'];

var dirpath = argv[2];

var PATTERNS = {
    ZENKAKU: /[！-～]/g,
    HANKAKU: /[\!-\~]/g
};

console.log('argv',argv);
fs.exists(dirpath, function (exists) {
    if (!exists) {
        console.error(dirpath, 'not exists!');
        return;
    }

    var resolve = path.resolve,
        extname = path.extname,
        rename = fs.rename;


    function hasHankaku(string) {
        return string && string.match(PATTERNS.HANKAKU);
    }

    function toZenkaku(string) {
        return string.replace(PATTERNS.HANKAKU, function (s) {
            return String.fromCharCode(s.charCodeAt(0) + 0xFEE0);
        });
    }


    fs.readdir(dirpath, function (err,filenames) {
        if(err) console.error(err);
        filenames.forEach(function (filename) {
            var extension = extname(filename),
                extension_less = filename.replace(new RegExp(extname(filename) + "$"), '');
            var needsConvert = hasHankaku(extension_less);
            if (!needsConvert) return;
            var old_filepath = resolve(dirpath, filename),
                new_filepath = resolve(dirpath, toZenkaku(extension_less) + extension);
            rename(old_filepath, new_filepath, function () {
                console.log('convert file:', old_filepath, 'to', new_filepath);
            });
        });
    });
});

process.on('exit', function () {
    console.log('done!');
});