using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
namespace ServerLib
{
public static class ResponseHelper
{
public static HttpResponse FromFile(this HttpResponse response, string fileName)
{
if (!File.Exists(fileName))
{
response.SetContent("404 - Not Found
");
response.StatusCode = "404";
response.Content_Type = "text/html";
return response;
}
var content = File.ReadAllBytes(fileName);
var contentType = GetMimeFromFile(fileName);
response.SetContent(content);
response.Content_Type = contentType;
response.StatusCode = "200";
return response;
}
public static HttpResponse FromXML(this HttpResponse response, string xmlText)
{
response.SetContent(xmlText);
response.Content_Type = "text/xml";
response.StatusCode = "200";
return response;
}
public static HttpResponse FromXML(this HttpResponse response, T entity) where T : class
{
return response.FromXML("");
}
public static HttpResponse FromJSON(this HttpResponse response, string jsonText)
{
response.SetContent(jsonText);
response.Content_Type = "text/json";
response.StatusCode = "200";
return response;
}
public static HttpResponse FromJSON(this HttpResponse response, T entity) where T : class
{
return response.FromJSON("");
}
public static HttpResponse FromText(this HttpResponse response, string text)
{
response.SetContent(text);
response.Content_Type = "text/plain";
response.StatusCode = "200";
return response;
}
private static string GetMimeFromFile(string filePath)
{
IntPtr mimeout;
if (!File.Exists(filePath))
throw new FileNotFoundException(string.Format("File {0} can't be found at GameLogic.", filePath));
int MaxContent = (int)new FileInfo(filePath).Length;
if (MaxContent > 4096) MaxContent = 4096;
byte[] buf = new byte[MaxContent];
using (FileStream fs = File.OpenRead(filePath))
{
fs.Read(buf, 0, MaxContent);
fs.Close();
}
int result = FindMimeFromData(IntPtr.Zero, filePath, buf, MaxContent, null, 0, out mimeout, 0);
if (result != 0)
throw Marshal.GetExceptionForHR(result);
string mime = Marshal.PtrToStringUni(mimeout);
Marshal.FreeCoTaskMem(mimeout);
return mime;
}
[DllImport("urlmon.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = false)]
static extern int FindMimeFromData(IntPtr pBC,
[MarshalAs(UnmanagedType.LPWStr)] string pwzUrl,
[MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.I1, SizeParamIndex = 3)]
byte[] pBuffer,
int cbSize,
[MarshalAs(UnmanagedType.LPWStr)]
string pwzMimeProposed,
int dwMimeFlags,
out IntPtr ppwzMimeOut,
int dwReserved);
}
}