Utility to Product Source Code Statistics

This utility is for developers that need to obtain statistics concerning
their source code. It will scan a directory structure and obtain all available
statistics information from the source code such as
total code lines, comments lines, headers lines,
code and resources lines. Scanning can be recursive
and countable files extensions can de defined.

// Copyright by Valery R. Kim, 20.01.2000. Freeware.

#include 
#include 
#include 
#include 

// White space delimiters
#define STR_WHITE_SPACE "/r/n /t,;"

// Structure accumulating statistics information
typedef struct _SCAN_INFO
{
 unsigned long lHeaders;
 unsigned long lCode;
 unsigned long lResources;
 unsigned long lLines;
 unsigned long lComments;

 _SCAN_INFO() { lLines=lComments=lResources=lCode=lHeaders=0; }

 _SCAN_INFO& operator+(_SCAN_INFO& ScanInfo)
 {
  lLines+=ScanInfo.lLines;
  lComments+=ScanInfo.lComments;
  lHeaders+=ScanInfo.lHeaders;
  lCode+=ScanInfo.lCode;
  lResources+=ScanInfo.lResources;
  return *this;
 }
 _SCAN_INFO& operator+=(_SCAN_INFO& ScanInfo)
 {
  lLines+=ScanInfo.lLines;
  lComments+=ScanInfo.lComments;
  lHeaders+=ScanInfo.lHeaders;
  lCode+=ScanInfo.lCode;
  lResources+=ScanInfo.lResources;
  return *this;
 }

} SCAN_INFO, *PSCAN_INFO;

// Default predefined countable extensions
static const char pPredefinedExts[]={"c cpp h hpp rc"};

// Function filling template vector by countable
//files extensions
template void FillExts(CArray& pDest, char** pExts)
{
 char* pItem=NULL;
 int  i=0;
 while(pItem=pExts[i]){
  pDest.Add(T(pExts[i]));
  i++;
 }
}

// Function filling template array from by default countable extensions
template void FillExts(CArray& pDest, const char pSrc[])
{
 char szBuf[_MAX_PATH];
 strcpy(szBuf, pSrc);

// Looking for substrings devided by white space
 char* pItem=strtok(szBuf, STR_WHITE_SPACE);
 while(pItem){
  pDest.Add(T(pItem));
  pItem=strtok(NULL, STR_WHITE_SPACE);
 }
}

// Function scanning file for statistics information
void ScanFile(CString sFileName, PSCAN_INFO pScanInfo,
unsigned long* plType)
{
 FILE *f=fopen(sFileName, "r");

 if(!f) return;

 char szBuf[4096];

 // Loop for file text lines
 while(fgets(szBuf, sizeof(szBuf), f)){
  pScanInfo->lLines++;

  (*plType)++;

  // Trim left leading white spaces
  CString s(szBuf);
  s.TrimLeft();

  if(s.Left(2)=="//") pScanInfo->lComments++;
 }

 fclose(f);
}

// Recursive function looping by subfolders
template void FoldersLoop(CString sDir, CArray& pExts,
bool bRecursive, SCAN_INFO& FolderScanInfo)
{
 // Don't make statistics for folders "." and ".."
 if(sDir[sDir.GetLength()-1]=='.') return;

 WIN32_FIND_DATA findData;

 HANDLE hFind=FindFirstFile(sDir+"//*.*", &findData);

 if(hFind==INVALID_HANDLE_VALUE){

  // No files in this folder
  return;
 }

 CArray pFiles;
 CArray pTypes;

 do{
  if(findData.dwFileAttributes &
  FILE_ATTRIBUTE_DIRECTORY && bRecursive){

   // Scan this folder
   FoldersLoop(sDir+"//"+findData.cFileName, pExts,
    bRecursive, FolderScanInfo);
  }
  else {

   // Get file extension
   CString sFileName(findData.cFileName);

   CString sExt=sFileName.Right(sFileName.GetLength()
    -sFileName.Find(".")-1);

   if(sExt!=""){

    sExt.MakeLower();

    // Look if this extension is countable
    for(int i=0; i// File satisfies conditions for extension
      pFiles.Add(sDir+"//"+findData.cFileName);


      // 0-length offset from structure addr
      if(sExt=="hpp" || sExt=="h") pTypes.Add(0);

      // 1-length offset from structure addr
      else if(sExt=="cpp" || sExt=="c") pTypes.Add(1);

      // 2-length offset from structure addr
      else if(sExt=="rc") pTypes.Add(2);
     }
   }
  }
 } while(FindNextFile(hFind, &findData));

 cout << sDir;

 // If we've found anything
 if(pFiles.GetSize()){

  cout << endl;
  for(int i=0; i// Scan this file according to it's type
   ScanFile(pFiles[i], &ScanInfo, &(ScanInfo.lHeaders)+pTypes[i]);

   FolderScanInfo+=ScanInfo;

   cout << ".";
  }
 }

 cout << endl;

 // Free templates data memory
 pFiles.RemoveAll();
 pTypes.RemoveAll();
}

// Main entry point
int main(int argc, char* argv[])
{
 // Check parameters list
 if(argc<=1){
  cout << "Bad arguments list. Format is as follows:" << endl
       << "StatCode.exe <dir_name> [-R] [exts]" << endl
       << "  key R - means recursive statistics" << endl
       << "  exts - list of countable files extensions divided by "
                "white spaces." << endl
       << "  By default *.cpp, *.c, *.h, *.cpp, *.rc files are "
                "counted." << endl;
  return 0;
 }

 // Base directory
 CString sBaseDir(argv[1]);

 // Recursive flag
 CString s(argv[2]);
 s.MakeUpper();
 bool bRecursive=(s=="-R");

 // Extensions
 int  nExtStart=2;

 if(bRecursive) nExtStart++;

 // Extensions buffer
 CArray pExts;

 if(nExtStart>=argc){

  // Fill extensions buffer with predefined extensions
  FillExts(pExts, pPredefinedExts);
 }
 else {

  // Get extensions from command line
  FillExts(pExts, argv+nExtStart);
 }

 SCAN_INFO ScanInfo;

 // Start loop for folders from base dir
 FoldersLoop(sBaseDir, pExts, bRecursive, ScanInfo);

 pExts.RemoveAll();

 // Ouput all statistics accumulated
 cout << endl
      << "Total lines : " << ScanInfo.lLines << endl
      << "Comments : " << ScanInfo.lComments
      << " (" << (int)(100.0*ScanInfo.lComments/ScanInfo.lLines)
      << "%)" << endl
      << "Headers  : " << ScanInfo.lHeaders
      << " (" << (int)(100.0*ScanInfo.lHeaders/ScanInfo.lLines)
      << "%)" << endl
      << "Code  : " << ScanInfo.lCode
      << " (" << (int)(100.0*ScanInfo.lCode/ScanInfo.lLines)
      << "%)" << endl
      << "Resources : " << ScanInfo.lResources
      << " (" << (int)(100.0*ScanInfo.lResources/ScanInfo.lLines)
      << "%)" << endl;

 return 0;
}

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