重命名一组视频文件，去掉前面重复的头，中文序号变为标准3个阿拉伯数字序号

rename.js

var chnNumChar = {
    零:0,
    一:1,
    二:2,
    三:3,
    四:4,
    五:5,
    六:6,
    七:7,
    八:8,
    九:9
};

var chnNameValue = {
    十:{value:10, secUnit:false},
    百:{value:100, secUnit:false},
    千:{value:1000, secUnit:false},
    万:{value:10000, secUnit:true},
    亿:{value:100000000, secUnit:true}
};

function ChineseToNumber(chnStr){
    var rtn = 0;
    var section = 0;
    var number = 0;
    var secUnit = false;
    var str = chnStr.split('');

    for(var i = 0; i < str.length; i++){
        var num = chnNumChar[str[i]];
        if(typeof num !== 'undefined'){
            number = num;
            if(i === str.length - 1){
                section += number;
            }
        }else if( typeof chnNameValue[str[i]] != 'undefined' ) {
            var unit = chnNameValue[str[i]].value;
            secUnit = chnNameValue[str[i]].secUnit;
            if(secUnit){
                section = (section + number) * unit;
                rtn += section;
                section = 0;
            }else{
		if( number == 0 && unit == 10 ){
			number = 1;
		}
                section += (number * unit);
            }
            number = 0;
        }
    }
    return rtn + section;
}


function fixedNum(n){
    var s=n.toString(10);
    while(s.length < 3){
        s='0' + s;
    }
    return s;
}

var path=require('path');
var fs=require('fs');

var files=fs.readdirSync('.')

for (var index in files){
	var file = files[index]
	if ( file.startsWith('陈') &&  file.endsWith('.mp4') ){
		console.log(file)
		var nFileName=file.substring(9)
		console.log(nFileName)
		fs.renameSync(file, nFileName)
	}
	else if( file.endsWith('.mp4')) {
		var co = '：'
		n_and_f = file.split(co)
        if( n_and_f.length < 2){
            continue;
        }
		console.log(n_and_f)
		var s=ChineseToNumber(n_and_f[0]);
        var f=n_and_f[1]
        var f_and_exe = f.split('.');
        var f = f_and_exe[0];
        var ext='mp4';
        f=f.replace(/[ -Youtube\[\]]/g,'');
        f=f.replace('p', '');
        console.log(f)

        var nName=fixedNum(s) + f + "." + ext;
        console.log(nName);
        fs.renameSync(file, nName);
	}
	
}