NW.js 写一个 epub 电子书搜索器，搜索指定目录下的电子书

效果：源码：
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<head>
  <title>应用搜索</title>
</head>
<body style="width: 100%; height: 100%;">
<div id="search"><input name="key" type="text" id="word"><button id="sbt">搜索</button></div>
<div id="searchtext"></div>
<div id="menu">等待加载</div>
<div id="content"></div>

</body>
<script>
	var c={}
	const StreamZip = require('node-stream-zip');
// Create an empty context menu
function newcontent(strs){
	//alert(strs);
    document.querySelector("#content").innerHTML=c[strs];
    //alert(c[strs]);
for(var i= 0; i< document.querySelectorAll("a").length; i ++){

        document.querySelectorAll("a")[i].onclick= function(ev){
          ev.preventDefault();
          var kry=ev.target.href;
          var urls=kry.split("/");
          newcontent(urls.pop());
        };

}

}
var path=require("path");
var fs = require("fs");
var cwdPath = path.dirname(path.dirname(path.dirname(path.dirname(process.cwd()))));
cwdPath+="/";
//alert(cwdPath);
var base=cwdPath+"../books/";
fs.readdir(base,function(err, files){
   if (err) {
       return console.error(err);
   }

   files.forEach( function (files){
    //alert(files);
       var zip = new StreamZip({
    file: base+files,
    storeEntries: true
       });
zip.on('ready', () => {
    // Take a look at the files
    console.log('Entries read: ' + zip.entriesCount);
    var str="";
    for (const entry of Object.values(zip.entries())) {
        const desc = entry.isDirectory ? 'directory' : `${entry.size} bytes`;
        //console.log(`Entry ${entry.name}: ${desc}`);
        //str+="<span onClick='newcontent(\""+entry.name+"\")'>"+entry.name+"</span>"
        //document.querySelector("#menu").innerHTML=str;
        if(entry.name.indexOf('html')!=-1){
           c[entry.name]=zip.entryDataSync(entry.name);
        }
        }
    zip.close()
});
   });
   document.querySelector("#menu").innerHTML="加载完成";
});

// 
document.querySelector("#sbt").addEventListener('click', function(ev) {
   var w=document.querySelector("#word").value;
   var ss=""
    for (i in c) {
    	    if(c[i].indexOf(w)!=-1){
    	    	
    	    	var old=c[i].toString();

                var news=old.replace(/<[^>]*>/g,"");
                var num=news.indexOf(w);
                if(num>10){

                	news=news.substring(num-10,num+20);
                }else{
                	news=news.substring(num-3,num+20);
                }
                ss+="<li onClick='newcontent(\""+i+"\")'>"+news+"</li>";
               
    	    }
    	    }
  document.querySelector("#searchtext").innerHTML=ss;        
  return false;
}, false);
var lock=0;
document.querySelector("#word").addEventListener('input', function(ev) {
  if(lock){
    return false;
  }
  lock=1;
     var w=document.querySelector("#word").value;
   var ss=""
    for (i in c) {
          if(c[i].indexOf(w)!=-1){
            
            var old=c[i].toString();

                var news=old.replace(/<[^>]*>/g,"");
                var num=news.indexOf(w);
                if(num>10){

                  news=news.substring(num-10,num+20);
                }else{
                  news=news.substring(num-3,num+20);
                }
                ss+="<li onClick='newcontent(\""+i+"\")'>"+news+"</li>";
              
          }
          }
           document.querySelector("#searchtext").innerHTML=ss;
           lock=0;
  return false;
})
</script>  
</html>