C Implementation


C++ Implementation

The C++ implementation is composed of the source files listed below.

  • CSVToXML.cpp : the main routine for the C++ application with CSV as the source

  • CSVSourceConverter.cpp : the class that drives conversion from CSV to XML

  • CSVSourceConverter.h : the header file for the CSVSourceConverter class

  • CSVRecordReader.cpp : the class that handles reading CSV records and converting to XML

  • CSVRecordReader.h : the header file for the CSVRecordReader class

  • XMLToCSV.cpp : the main routine for the C++ application with CSV as the target

  • CSVTargetConverter.cpp : the class that drives conversion from XML to CSV

  • CSVTargetConverter.h : the header file for the CSVTargetConverter class

  • CSVRecordWriter.cpp : the class that handles reading XML and building and writing CSV records

  • CSVRecordWriter.h : the header file for the CSVRecordWriter class

  • DataCellAN.cpp : the class that handles alphanumeric fields in legacy formats

  • DataCellAN.h : the header file for the DataCellAN class

  • DataCellReal.cpp : the class that handles real (or decimal) number fields in legacy formats

  • DataCellReal.h : the header file for the DataCellReal class

  • DataCellDateMMsDDsYYYY.cpp : the class that handles date fields in MM/DD/YYYY representation in legacy formats

  • DataCellDateMMsDDsYYYY.h : the header file for the DataCellDateMMsDDsYYYY class

Directory operations are the only new C++ and WIN32 coding concepts introduced in these programs. To create an output directory in the CSVSourceConverter's processFile method, we use the _mkdir function.

 iReturn = _mkdir(cOutputDirectory); 

To read an input directory in the XMLToCSV main program, we use the FindFirstFile library routine, followed by successive calls to FindNextFile. FindFirstFile returns a File HANDLE and a WIN32_FIND_DATA structure from which we can retrieve the file name . FindNextFile returns us the next HANDLE and its WIN32_FIND_DATA structure. Here are the relevant lines from the code.

 HANDLE hFind; WIN32_FIND_DATA FindFileData; ... //  For FindFirstFile, append wildcards if ( strcmp( &(cInputDirectoryFindPath[i-3]),"*.*") != 0) {   strcat(cInputDirectoryFindPath,"*.*"); } //  Open input directory //  Get first file from input directory hFind = FindFirstFile(cInputDirectoryFindPath,     &FindFileData); if (hFind == INVALID_HANDLE_VALUE) {   throw cInputDirectoryOpenError; } //  DO for all files in input directory do {   //  Skip directory file paths   if (FindFileData.cFileName[0] == '.')   {     continue;   }   //  Build input file name   memset(cInputFileName,0,MAX_PATH_LENGTH);   strcpy(cInputFileName,cInputDirectoryName);   strcat(cInputFileName,FindFileData.cFileName);   ... Load, parse, and process the document } while (FindNextFile(hFind, &FindFileData) == TRUE); //  ENDDO //  Close the input directory FindClose(hFind); 


Using XML with Legacy Business Applications
Using XML with Legacy Business Applications
ISBN: 0321154940
EAN: 2147483647
Year: 2003
Pages: 181

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