{"manifest_version":2,"name":"OpenSelectedText","description":"Open Selected Text","version":"1.0","background":{"scripts":["background.js"],"persistent":false},"permissions":["contextMenus","nativeMessaging"],"icons":{"48":"icon48.png"}}

//コンテキストメニューのクリック時イベントハンドラfunctiononClickHandler(info,tab){if(info.menuItemId=="OpenSelectedText"){sendText(info,tab);}};chrome.contextMenus.onClicked.addListener(onClickHandler);//拡張機能インストール時のみ、自メニュー追加chrome.runtime.onInstalled.addListener(function(){chrome.contextMenus.create({id:"OpenSelectedText",title:"選択文字列をパスとして開く",type:"normal",contexts:["selection"]});});//選択文字列を送信functionsendText(info,tab){varSelectedText=encodeURIComponent(info.selectionText.replace(/\\/g,'/'));chrome.runtime.sendNativeMessage("host1",{SelectedText},function(response){varmessage=decodeURIComponent(response);console.log(message);if(message!="OK"){alert(message);}});}

{"name":"host1","description":"Open Selected Text Host","path":"OST_Host.exe","type":"stdio","allowed_origins":["chrome-extension://bgkppcgfghmbmlfljpldaaddklfeaafg/"]}

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\SOFTWARE\Google\Chrome\NativeMessagingHosts\host1]
@="C:\\Work\\OpenSelectedText\\OST_Host.json"

usingMicrosoft.JScript;usingSystem;usingSystem.IO;usingSystem.Runtime.Serialization;usingSystem.Runtime.Serialization.Json;usingSystem.Text;namespaceOST_Host{[DataContract]publicclassMessage{[DataMember]publicstringSelectedText{get;set;}}classNativeMessage{publicstaticstringStringRead(){// JSONデータの受信stringinStr=OpenStandardStreamIn();inStr=GlobalObject.decodeURIComponent(inStr);// JSONデータのデシリアライズvarserializer=newDataContractJsonSerializer(typeof(Message));using(varms=newMemoryStream(Encoding.UTF8.GetBytes(inStr))){vardata=(Message)serializer.ReadObject(ms);returndata.SelectedText;}}publicstaticvoidStringWrite(stringstringData){intlimit=1024*1024-2;stringstringText=GlobalObject.encodeURIComponent(stringData);while(stringText.Length>=limit){OpenStandardStreamOut("\""+stringText.Substring(0,limit)+"\"");stringText=stringText.Substring(limit);}OpenStandardStreamOut("\""+stringText+"\"");}privatestaticstringOpenStandardStreamIn(){Streamstdin=Console.OpenStandardInput();byte[]bytes=newbyte[4];stdin.Read(bytes,0,4);intlength=BitConverter.ToInt32(bytes,0);stringinput="";for(inti=0;i<length;i++)input+=(char)stdin.ReadByte();stdin.Close();returninput;}privatestaticvoidOpenStandardStreamOut(stringstringData){byte[]bytes=BitConverter.GetBytes(stringData.Length);Streamstdout=Console.OpenStandardOutput();for(inti=0;i<4;i++)stdout.WriteByte(bytes[i]);Console.Write(stringData);stdout.Close();}}}

usingSystem;usingSystem.Diagnostics;usingSystem.IO;namespaceOST_Host{staticclassProgram{[STAThread]staticvoidMain(string[]args){// 受信文字列（￥が全て／になっている）stringinStr=NativeMessage.StringRead();intindex;string[]prefixes=newstring[2]{"file://","file:"};if(inStr==string.Empty){NativeMessage.StringWrite("選択文字列が空です。");}else{// 不要な文字の削除index=inStr.LastIndexOf("<");if(index>=0){inStr=inStr.Substring(index+1);}index=inStr.IndexOf(">");if(index>=0){inStr=inStr.Substring(0,index);}// "file:"の削除（"FILE:"と書く方はまれだと思うが、一応は考慮）for(index=0;index<prefixes.Length;index++){if(inStr.StartsWith(prefixes[index],StringComparison.OrdinalIgnoreCase)){inStr=inStr.Substring(prefixes[index].Length);}}// UNCパス先頭の"//"と、"file://"の"//"が合体していたケースの対処if(!inStr.StartsWith("//")&&!inStr.Contains(":")){inStr="//"+inStr;}// 通信～デシリアライズ前とは逆の変換inStr=inStr.Replace("/","\\");if(Directory.Exists(inStr)){try{Process.Start("explorer.exe","/e, \""+inStr+"\"");NativeMessage.StringWrite("OK");}catch(Exception){NativeMessage.StringWrite("フォルダを開けません。");}}elseif(File.Exists(inStr)){try{ProcessStartInfopsi=newProcessStartInfo(inStr);psi.WorkingDirectory=Directory.GetParent(inStr).FullName;Process.Start(psi);NativeMessage.StringWrite("OK");}catch(Exception){NativeMessage.StringWrite("ファイルを開けません。");}}else{NativeMessage.StringWrite("不正なパスです。");}}}}}