recursive_directory_iteration

// Chomp.cpp : Defines the entry point for the console application.
//

#include <stdafx.h>
#include <windows.h>
#include <string>
#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <cctype>
#include <algorithm>
#include <vector>
#include <stack>

//std::ifstream inFile ( "c:/temp/input.txt" ) ;
std::wofstream outFile(L"c:/temp/output.txt") ;

using namespace std;

/////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////

void openFiles()
{
    if (!(outFile.is_open()))
    {
       printf ("Could not Create Output file\n");
       exit(0);
    }
}

/////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////

bool ListFiles(wstring path, const wstring& mask, vector<wstring>& files)
{
    HANDLE hFind = INVALID_HANDLE_VALUE;
    WIN32_FIND_DATA ffd;
    wstring spec;
    stack<wstring> directories;

    directories.push(path);
    files.clear();

    while (!directories.empty())
    {
        path = directories.top();
        spec = path + L"\\" + mask;
        directories.pop();

        hFind = FindFirstFile(spec.c_str(), &ffd);
        if (hFind == INVALID_HANDLE_VALUE)
            return false;

        do
        {
            if (wcscmp(ffd.cFileName, L".") != 0 && wcscmp(ffd.cFileName, L"..") != 0)
            {
                if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
                    directories.push(path + L"\\" + ffd.cFileName);
                else
                    files.push_back(path + L"\\" + ffd.cFileName);
            }
        } while (FindNextFile(hFind, &ffd) != 0);

        if (GetLastError() != ERROR_NO_MORE_FILES)
        {
            FindClose(hFind);
            return false;
        }

        FindClose(hFind);
        hFind = INVALID_HANDLE_VALUE;
    }

    return true;
}

/////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////

void processFiles(const wstring& inFileName, const wstring& findFirst, const wstring& findLast )
{
/*
       std::string findFirst = "testing" ;
       std::string findLast  = "finish" ;
*/
       wstring inputLine ;
       int lineNum = 0 ;
       wchar_t buffer[2048];
       size_t found = 0;

       wifstream inFile;
       inFile.open (inFileName.c_str());        // Open The file

       if (inFile.is_open())
       {
          while( getline( inFile, inputLine ))
          {
             ++lineNum ;
 //          printf ("Line len = %d\n ", inputLine.length());

             if( (found = inputLine.find(findFirst)) != wstring::npos )
             {
                 cout << "###Line " << lineNum << " At Position [ " << found << " ]\n" ;
                 swprintf_s(buffer, 2048, L"[%-5.5d] %s\n", lineNum, inputLine.c_str());
                 outFile << buffer ;

                 bool foundLast = 0;
                 while( getline( inFile, inputLine ))
                 {
                     ++lineNum ;

                     swprintf_s(buffer, 2048, L"[%-5.5d] %s\n", lineNum, inputLine.c_str());
                     if( (found = inputLine.find(findLast)) != wstring::npos )
                     {
                         outFile << buffer ;
                         break;  // Found last string - so stop after printing last line
                     }
                     else
                          outFile << buffer ;
                 }
             }
             else
             {
                // std::cout << "=>" << inputLine << '\n' ;
             }
          }
       }
       else
       {
             printf ("Cant open file \n");
             exit(0);
       }

       inFile.close() ;     // Close The file
}

/////////////////////////////////////////////////////////////////////////////////////////////
///                                   M    A    I    N
/////////////////////////////////////////////////////////////////////////////////////////////

int main()
{
       wifstream inFile ;

       int startLine = 0;
       int endLine = 0;
       int lineSize = 0;
       wchar_t buffer[512];

       vector<wstring> files;           // For Parsing Directory structure

       openFiles();

       // Start The Recursive parsing of Directory Structure

       if (ListFiles(L"C:\\temp", L"*.*", files))
       {
            for (vector<wstring>::iterator it = files.begin(); it != files.end(); ++it)
            {

                wprintf (L"Filename1 is %s\n", it->c_str());
                wprintf (L"Filename2 is %s\n", files.begin()->c_str());

                outFile <<  "\n------------------------------\n";
                //outFile << *it  << endl;
                wcout << *it << endl;
                outFile <<  "\n------------------------------\n";

                processFiles(*it, L"testing", L"finish");
                getchar();
            }
       }
       outFile.close();
       getchar();
}