droid_rage's Journal: Why "Learn C++ in 21 days!" Doesn't work

OMG, like, I was totally looking through _Production code_, when I found this little gem. I'm not even a particularly good coder, but please. This is a piece of production code! If this isn't the worst code I've ever read, I'm not sure what is. Somebody fell asleep in class when they were learning about recursion and functions.

----------------------

// INFCopy.cpp : Defines the entry point for the application.
//

#include "stdafx.h"

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
     // TODO: Place code here.
    WIN32_FIND_DATA        FileName;
    HANDLE                hFind[20]; //Handle for Directory Find Data. Each array segment is one subdir
    CHAR                szDestinationDir[MAX_PATH]; // c:\windows\inf
    CHAR                szSourceDir[MAX_PATH]; // Set to c:\windows\options\cabs\windows\inf
    CHAR                szCopyFile[MAX_PATH];
    CHAR                szCompareFile[MAX_PATH];
    CHAR                szRootDest[MAX_PATH];
    CHAR                szNewDir[MAX_PATH];
    CHAR                SubDirsSource[20][MAX_PATH]; //This keeps track of all upper level dirs in Source
    CHAR                SubDirsDest[20][MAX_PATH]; //This keeps track of all upper level dirs in Destination
    UINT                DirLevel;  // Array counter for SubDirs and hFind functions

    strcpy(szSourceDir,"c:\\windows\\options\\cabs\\windows\\inf");
    strcpy(szRootDest,"c:\\windows\\inf");
    strcpy(szDestinationDir,"c:\\windows\\inf");
    SetCurrentDirectory(szSourceDir);
    DirLevel = 0;
    sprintf(SubDirsSource[DirLevel],szSourceDir);
    sprintf(SubDirsDest[DirLevel],szDestinationDir);

    hFind[DirLevel] = FindFirstFile("*.*", &FileName);

    while(DirLevel >= 0) // If DirLevel is at 0, program should break, but just in case...
    {
        if(FileName.dwFileAttributes == 16) // If this is a directory?
        {
            if(((strcmp(FileName.cFileName, ".")) == 0)||((strcmp(FileName.cFileName,"..")) == 0))
            {
                if(!FindNextFile(hFind[DirLevel], &FileName)) break; //break if it's . or ..
                else continue;
            }

            DirLevel++;
            SetCurrentDirectory(FileName.cFileName);
            sprintf(SubDirsSource[DirLevel], FileName.cFileName);
            sprintf(szNewDir,"%s\\%s\\", szDestinationDir,FileName.cFileName);
            CreateDirectory(szNewDir,0); //Creating the Dir is just so much easier
            printf("Copying %s\n",FileName.cFileName); //Hey man, what're ya doing?
            sprintf(SubDirsDest[DirLevel], FileName.cFileName);
            sprintf(szDestinationDir,"%s", szNewDir);
            if((hFind[DirLevel] = FindFirstFile("*.*", &FileName)) == INVALID_HANDLE_VALUE)
            {
                //If there are no files in the directory...
                FindClose(hFind[DirLevel]); //Close the find handle
                DirLevel--;    //backtrack to previous array
                SetCurrentDirectory(SubDirsSource[DirLevel]); //set the directory to previous array dir
                sprintf(szDestinationDir, "%s",SubDirsDest[DirLevel]); //set destination " "
                FindNextFile(hFind[DirLevel], &FileName); //Find the next file in previous dir
            }
            else continue;

        }//This ends the dir copy function if statement.

        else
        {
            /* If it's not a Dir, then it's a file, and we like copying files, don't we Bobby?*/
            sprintf(szCopyFile,"%s\\%s", szDestinationDir, FileName.cFileName); //sets szCopyFile to correct Dir and file name
            CopyFile(FileName.cFileName, szCopyFile, false);
            printf("Copying %s\n",FileName.cFileName);
            sprintf(szCompareFile,"%s",FileName.cFileName);
            FindNextFile(hFind[DirLevel], &FileName);
            if(strcmp(FileName.cFileName, szCompareFile) == 0)
            {
                if(DirLevel == 0) break;
                FindClose(hFind[DirLevel]);
                DirLevel--;
                SetCurrentDirectory(SubDirsSource[DirLevel]);
                sprintf(szDestinationDir, "%s\\",SubDirsDest[DirLevel]);
                FindNextFile(hFind[DirLevel], &FileName);

            }

        }

    } //This ends Topmost While statement

    printf("Finished copying files");
    return 0;
}