普通文件格式与二进制文件格式互转

普通文件与二进制文件间的相互转换

普通文件后缀为 ".txt"，没带后缀的为二进制文件

#include #include #include #include #include #include #include #include using namespace  std;typedef unsigned long  ULONG;typedef struct fileStr{long nId;long nType;        long nCharge;    fileStr(){nId = 0;nType = 0;nCharge = 0;}}file_str;ULONG m_nBlockSize = sizeof(file_str);void ParseString(string szSrc ,const char* szSpilt,vector& vecDest){//字符串分解return ;}bool checkFile(string strFileName){ULONG nSize = 0;struct stat oldStat;stat(strFileName.c_str(), &oldStat);nSize = oldStat.st_size;if (nSize % m_nBlockSize){return false;}return true;}int BinToNorfile(string strFileName){file_str Record;FILE* write_fd = NULL;FILE* read_fd = NULL;char pzBuf[1024]={0};char pzfilename[256] = {0};string sfilename = "";//只有文件名，不包含路径read_fd = fopen(strFileName.c_str(),"rb");if (NULL == read_fd){cout<<"read file failed,or the file "<<strFileName<<" does not exist"<<endl;return -1;}if (checkFile(strFileName))//read.checkFile(){char pzPath[256]={0};int nPos = strFileName.rfind("/");if (string::npos == nPos){sfilename = strFileName;}else{sfilename = strFileName.substr(nPos+1);//源文件名，不包含路径sprintf(pzPath,"%s",(strFileName.substr(0,nPos+1)).c_str());}sprintf(pzfilename,"%s_bak",sfilename.c_str());//写文件strcat(pzPath,pzfilename);write_fd = fopen(pzfilename,"a+");fseek(read_fd,0L,SEEK_SET);while(!feof(read_fd)) {file_str st_file;memset(pzBuf,0x0,sizeof(pzBuf));fread(&st_file,sizeof(file_str),1,read_fd);sprintf(pzBuf,"%ld|%ld|%ld\n",st_file.nId,st_file.nType,st_file.nCharge);int nRet = fwrite(pzBuf,strlen(pzBuf),1,write_fd);if(nRet != 1){cout<<"failed to writefile !"<<endl;return -1;}fseek(write_fd,0,SEEK_END);}fclose(write_fd);}else{fclose(read_fd);printf("Check file error, file[%s].\n", strFileName.c_str());return -1;}fclose(read_fd);return 0;}int NorToBinfile(string strFileName){file_str Record;FILE* write_fd = NULL;FILE* read_fd = NULL;char pzBuf[1024]={0};char pzfilename[256] = {0};string sfilename = "";//只有文件名，不包含路径read_fd = fopen(strFileName.c_str(),"r");if (NULL == read_fd){cout<<"read file failed,or the file "<<strFileName<<" does not exist"<<endl;return -1;}if (true){char pzPath[256]={0};int nPos = strFileName.rfind("/");if (string::npos == nPos){nPos = strFileName.rfind(".txt");sfilename = strFileName.substr(0,nPos);//去掉 .txt}else{string strTmp = strFileName.substr(nPos+1);//源文件名，不包含路径nPos = strTmp.rfind(".txt");sfilename = strTmp.substr(0,nPos);sprintf(pzPath,"%s",(strFileName.substr(0,nPos+1)).c_str());}sprintf(pzfilename,"%s",sfilename.c_str());//写文件strcat(pzPath,pzfilename);write_fd = fopen(pzfilename,"wb+");fseek(read_fd,0L,SEEK_SET);while(!feof(read_fd)) {file_str st_file;memset(pzBuf,0x0,sizeof(pzBuf));fgets(pzBuf,sizeof(pzBuf),read_fd);if (!strcmp(pzBuf,"")){continue;}vector vecStr;ParseString(pzBuf,"|",vecStr);if (vecStr.size()>= 3){st_file.nId = atol(vecStr[0].c_str());st_file.nType = atol(vecStr[1].c_str());st_file.nCharge = atol(vecStr[2].c_str());}else{cout<<"the file content is wrong, the file is "<<strFileName<<endl;return -1;}int nRet = fwrite(&st_file,sizeof(file_str),1,write_fd);if(nRet != 1){cout<<"failed to writefile !"<=2){strcpy(pzFilename,argv[1]);}if (0 == strlen(pzFilename)){cout<<"please set the filepath"<<endl;}char* pzExtent = strrchr(pzFilename,'.');if (NULL != pzExtent){if (!strcmp(pzExtent,".txt")){NorToBinfile(pzFilename);//文本文件转二进制文件}else{BinToNorfile(pzFilename);//二进制转文本文件}}elseBinToNorfile(pzFilename);return 0;}