add

+/**************************************************************************
+* file:              dmpesribundlev1provider.cpp
+
+* Author:            wanzhongping
+* Date:              2021-05-31 10:55:51
+* Email:             zhongpingw@chinadci.com
+* copyright:         广州城市信息研究所有限公司
+***************************************************************************/
+#include "dmpwmtsutils.h"
+#include "dmpesribundlev1provider.h"
+#include <iostream>
+namespace DmpWmts
+{
+    DmpEsriBundleV1Provider::DmpEsriBundleV1Provider()
+    {
+        _rootPath ="/mnt/d/Data/tile/GDMap/_alllayers";
+    }
+    void DmpEsriBundleV1Provider::WriteTile(const int row, const int col, const int level, const std::string& format, DmpServerResponse& response)
+    { 
+        int packSize = _packetSize;
+        int rGroup = (int)row/packSize;
+        rGroup = rGroup * packSize;
+        int cGroup = (int)col/packSize;
+        cGroup = cGroup*packSize;
+
+        std::string bundleBase = GetBundlePath(level,rGroup,cGroup);
+        std::string bundleFilePath = bundleBase + ".bundle";
+        std::string bundlxFilePath = bundleBase + ".bundlx";
+
+        int index = packSize * (col - cGroup) + (row - rGroup);
+
+        //读取bundlx文件存储该切片的位置,计算偏移量
+        std::ifstream freadx(bundlxFilePath,  std::ifstream::binary); 
+        if(!freadx)   
+        {
+            response.SendError(500, "找不到瓦片:(");
+            return;
+        }
+        freadx.seekg(16+5*index, freadx.beg);
+        char* buffer = new char[5];
+        freadx.read(buffer,5);
+        freadx.close();
+        long offset = (long)(buffer[0]&0xff) 
+                    + (long)(buffer[1]&0xff) * 256 
+                    + (long)(buffer[2]&0xff) * 65536
+                    + (long)(buffer[3]&0xff) * 16777216
+                    + (long)(buffer[4]&0xff) * 4294967296L;
+        delete [] buffer;
+    
+        //读取bundle文件获取切片
+        std::ifstream fread(bundleFilePath, std::ifstream::binary); 
+        if(!fread)   
+        {
+            response.SendError(500, "找不到瓦片:(");
+            return;
+        }  
+        fread.seekg(offset, fread.beg);
+        char* buff = new char[4];
+        fread.read(buff, 4);
+        long len = (long)(buff[0]&0xff) 
+                 + (long)(buff[1]&0xff) * 256 
+                 + (long)(buff[2]&0xff) * 65536
+                 + (long)(buff[3]&0xff) * 16777216;
+        delete[] buff;
+        char* imgBuffer = new char[len];
+        fread.read(imgBuffer, len);
+        fread.close();
+        if(len > 0)    
+        {
+           response.RemoveHeader("Content-Type"); 
+           std::string f = (format == "jpg") ? "image/jpg" : "image/png";     
+           response.SetHeader("Content-Type", f);
+           response.WriteContent(imgBuffer, len);
+        }
+        else
+        {
+            response.SendError(500, "找不到瓦片:(");
+        }
+        delete[] imgBuffer;
+    }
+}