// DXFReader.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include <mmsystem.h>#include <iostream>#include <sstream>#include <string>#include <vector>#ifdef _DEBUG#define new DEBUG_NEW#endifusing namespace std;struct Line{char * originalP ;double x1,y1,z1,x2,y2,z2;UINT orgSize;//线信息字节大小UINT curSize;//线当前信息字节大小};void AdjustPos(char* istrBuffer,int & pos,char* tmp);string ReadLine(istringstream& instr,char* istrBuffer,int & pos,char* &preLine,char* &curLine,int& rowIndex);string TrimString(string tmpStr);Line CreatLine( char*& istrBuffer, int & pos, istringstream& instr, char * &preLine, char * &curLine, int& rowIndex );string swriter(Line &);// 唯一的应用程序对象CWinApp theApp;void execute();using namespace std;int _tmain(int argc, TCHAR* argv[], TCHAR* envp[]){int nRetCode = 0;HMODULE hModule = ::GetModuleHandle(NULL);if (hModule != NULL){// 初始化 MFC 并在失败时显示错误if (!AfxWinInit(hModule, NULL, ::GetCommandLine(), 0)){// TODO: 更改错误代码以符合您的需要_tprintf(_T("错误: MFC 初始化失败\n"));nRetCode = 1;}else{// TODO: 在此处为应用程序的行为编写代码。execute();}}else{// TODO: 更改错误代码以符合您的需要_tprintf(_T("错误: GetModuleHandle 失败\n"));nRetCode = 1;}return nRetCode;}/////////////////////////////////////////////////////////////////////////////////////////////////////// <summary>创建执行程序. </summary>////// <remarks>zhengzhe, 2011/11/9. </remarks>////////////////////////////////////////////////////////////////////////////////////////////////////void execute(){wcout.imbue(locale("chs"));clock_t start,end;start = clock();const char* srcFile = "c:\\t3.dxf";const char* desFile = "c:\\t3_1.dxf";CFile m_curFile(_T(srcFile),CFile::modeRead);UINT uFileSize = (UINT)m_curFile.GetLength();char* istrBuffer = new char[uFileSize];//输入缓冲区char* ostrBuffer ;//输出缓冲区vector<Line> vecLines;m_curFile.Read(istrBuffer,uFileSize);m_curFile.Close();//string str(strBuffer);//std::istringstream instr(str);istringstream instr;instr.str(istrBuffer);int rowIndex = 0,pos = 0;int num=0;char *preLine=istrBuffer ,*curLine=istrBuffer;while(!instr.eof()){//读取并返回一行数据string strLine = ReadLine(instr,istrBuffer,pos,preLine,curLine,rowIndex);//裁剪数据string s = TrimString(strLine);//开始读取实体数据if (s=="ENTITIES"){do {s = TrimString(ReadLine(instr,istrBuffer,pos,preLine,curLine,rowIndex));if (s=="LINE"){vecLines.push_back(CreatLine(istrBuffer, pos, instr, preLine, curLine, rowIndex));}} while (s!="ENDSEC");}if (s=="EOF")break;}end = clock();cout << "Vector Size is :" <<vecLines.size()<<endl;int count = vecLines.size()>5?5:vecLines.size();for (int i=0 ;i<count;i++){int size = vecLines[i].orgSize;char *p = new char[size+1];strncpy(p,vecLines[i].originalP,size);p[size]='\0';cout <<"vec "<<i<<" \n\tsize is :" << size << "\n\tstart at " << &(vecLines[i].originalP) << "\n\twith original content:\n" << p <<endl;}cout << "Start changing...." <<endl;//修改数据Line & line1 = vecLines[0];line1.x1=2941.815581111809;line1.y1=1653.848673386335;line1.z1=0.0;line1.x2=5941.815581111809;line1.y2=3653.848673386335;line1.z2=0.0;;//输出信息string output = swriter(line1);cout <<"After changed line has :\n"<<output.length()<<"bytes\n" << output <<endl;//调整大小line1.curSize = output.length();//写文件int mSize = (vecLines[0].originalP-istrBuffer)/sizeof(char); //未修改的字节大小int oSize = uFileSize+vecLines[0].curSize-vecLines[0].orgSize; //计算输出缓存大小ostrBuffer = new char[oSize];memcpy(ostrBuffer,istrBuffer,mSize);//拷贝未修改部分char* oPtr = ostrBuffer+sizeof(char)*mSize;//初始化输出char* inPtr = istrBuffer+sizeof(char)*mSize;//初始化原数据inPtr = inPtr+vecLines[0].orgSize*sizeof(char); //移动源数据指针strcpy(oPtr,output.c_str());//拷贝信息oPtr = oPtr + sizeof(char)*(output.length());//移动输出指针memcpy(oPtr,inPtr,(istrBuffer+sizeof(char)*uFileSize-inPtr)/sizeof(char));CFile m_outFile(_T(desFile),CFile::modeCreate|CFile::modeWrite);m_outFile.Write(ostrBuffer,oSize);cout << "Writeing complete..." <<endl;cout << "Run time:" << (double)(end-start)/CLOCKS_PER_SEC <<"seconds " <<endl;delete[] istrBuffer;delete[] ostrBuffer;}string TrimString(string tmpStr){char s[256]={0};sscanf(tmpStr.c_str(),"%s",s);//读取字符串return string(s);}string ReadLine(istringstream& instr,char* istrBuffer,int & pos,char* &preLine,char* &curLine,int& rowIndex){char tmp[256]={0};//设定每行大小256instr.getline(tmp,256);//调整Pos位置AdjustPos(istrBuffer,pos,tmp); //读取失败，则跳过，否则读取成功行数加1if (!instr.fail())rowIndex++;//行数加1 只有在成功读入一行else{for(;istrBuffer[pos]!='\n';pos++);while(istrBuffer[pos]=='\n'||istrBuffer[pos]=='\r'){pos++;}instr.ignore('\n');instr.clear();}//调整当前指针if (rowIndex>1)preLine = curLine;curLine = &istrBuffer[pos];return string(tmp);}void AdjustPos(char* istrBuffer,int & pos,char* tmp){ pos+=strlen(tmp);while (istrBuffer[pos]=='\r'||istrBuffer[pos]=='\n')pos++;//跳过\n\t}Line CreatLine( char*& istrBuffer, int & pos, istringstream& instr, char * &preLine, char * &curLine, int& rowIndex ){Line line ={NULL,0,0,0,0,0,0,0};typedef enum dataType{X1=1,Y1,Z1,X2,Y2,Z2} DataType;DataType dType = X1;string s,strLine;do{strLine = ReadLine(instr,istrBuffer,pos,preLine,curLine,rowIndex);s = TrimString(strLine);}while(s!="10");while(s!="0"){if (s=="10"){dType = X1;//记录line的在buffer中的位置,注意需要减去10的位置line.originalP=preLine;}if(s=="20")dType = Y1;if(s=="30")dType = Z1;if (s=="11")dType=X2;if(s=="21")dType=Y2;if(s=="31")dType = Z2;s = TrimString(ReadLine(instr,istrBuffer,pos,preLine,curLine,rowIndex));switch(dType){case X1:line.x1 = atof(s.c_str());break;case Y1:line.y1 = atof(s.c_str()); break;case Z1:line.z1 = atof(s.c_str()); break;case X2:line.x2 = atof(s.c_str()); break;case Y2:line.y2 = atof(s.c_str()); break;case Z2:line.z2 = atof(s.c_str()); break;default:;}s = TrimString(ReadLine(instr,istrBuffer,pos,preLine,curLine,rowIndex));}line.orgSize = (&istrBuffer[pos]-line.originalP)/sizeof(char); //字节大小return line;}string swriter(Line& line){CString s;s.Format("10\r\n%f\r\n20\r\n%f\r\n30\r\n%f\r\n11\r\n%f\r\n21\r\n%f\r\n31\r\n%f\r\n0\r\n",line.x1,line.y1,line.z1,line.x2,line.y2,line.z2);return s.GetString();}
