JavaScript 兽音译 源码

来源 ：https://greasyfork.org/en/scripts/36842-google-select-text-translator

 

class howlingAnimalsTranslator{
    __codeTxt="嗷呜啊~";
    constructor(codeTxt){
        if(codeTxt!=null){
            codeTxt=codeTxt.trim();
            if(codeTxt.length==4){
                this.__codeTxt=codeTxt;
            }
        }
    }
    convert(txt){
        txt=txt.trim();
        if(txt.length<1){
            return "";
        }
        let result=this.__codeTxt[3]+this.__codeTxt[1]+this.__codeTxt[0];
        let offset=0;
        for(let i=0;i<txt.length;i++){
            let c=txt.charCodeAt(i);
            for(let b=12;b>=0;b-=4){
                let hex=(c>>b)+offset++&15;
                result+=this.__codeTxt[(hex>>2)];
                result+=this.__codeTxt[(hex&3)];
            }
        }
        result+=this.__codeTxt[2];
        return result;
    }
    deConvert(txt){
        txt=txt.trim();
        if(txt.length<4){
            return "";
        }
        let result="";
        let offset=0;
        for(let i=3;i<txt.length-1;){
            let c=0;
            for(let b=i+8;i<b;i++){
                c=c<<4|((this.__codeTxt.indexOf(txt[i++])<<2|this.__codeTxt.indexOf(txt[i]))+offset)&0xf;
                offset=(offset==0 ? 0x10000*0x10000-1:offset-1);
            }
            result+=String.fromCharCode(c);
        }
        return result;
    }
    identify(txt){
        txt=txt.trim()
        if(txt.length>11){
            if(txt[0]==this.__codeTxt[3] && txt[1]==this.__codeTxt[1] && txt[2]==this.__codeTxt[0] && txt.charAt(txt.length-1)==this.__codeTxt[2] && ((txt.length-4)%8)==0){
                for(let i=0;i<txt.length;i++){
                    if(this.__codeTxt.indexOf(txt[i])<0)return false;
                }
                return true;
            }
        }
        return false;
    }
}
var animalVoiceDefaultConfig="嗷呜啊~";
var animalVoiceTranslator=new howlingAnimalsTranslator(animalVoiceDefaultConfig);
console.log(animalVoiceTranslator.convert("大家好！"));