added paramter -e to skip and count empty lines

svn path=/trunk/; revision=9133

reactos/apps/utils/stats/stats.c

@@ -21,6 +21,7 @@ typedef struct _EXTENSION_INFO
   TCHAR Description[256];
   DWORD FileCount;
   DWORD LineCount;
+  DWORD EmptyLines;
 } EXTENSION_INFO, *PEXTENSION_INFO;
 
 typedef struct _FILE_INFO
@@ -30,26 +31,29 @@ typedef struct _FILE_INFO
   PEXTENSION_INFO ExtInfo;
   TCHAR FileName[MAX_PATH];
   DWORD LineCount;
+  DWORD EmptyLines;
   DWORD FunctionCount;
 } FILE_INFO, *PFILE_INFO;
 
 HANDLE FileHandle;
-DWORD TotalLineCount;
 PEXTENSION_INFO ExtInfoList;
 PFILE_INFO StatInfoList;
+BOOLEAN SkipEmptyLines;
+
+#define MAX_OPTIONS	1
+TCHAR *Options[MAX_OPTIONS];
 
 
 VOID
-Initialize()
+Initialize(VOID)
 {
-  TotalLineCount = 0;
   ExtInfoList = NULL;
   StatInfoList = NULL;
 }
 
 
 VOID
-Cleanup()
+Cleanup(VOID)
 {
   PEXTENSION_INFO ExtInfo;
   PEXTENSION_INFO NextExtInfo;
@@ -157,7 +161,7 @@ AddFile(LPTSTR FileName,
 
 
 VOID
-CleanupAfterFile()
+CleanupAfterFile(VOID)
 {
   if(FileHandle != INVALID_HANDLE_VALUE)
     CloseHandle (FileHandle);
@@ -190,10 +194,10 @@ LoadFile(LPTSTR FileName)
 }
 
 
-DWORD
+VOID
-ReadLines()
+ReadLines(PFILE_INFO StatInfo)
 {
-  DWORD ReadBytes, LineLen, Lines = 0;
+  DWORD ReadBytes, LineLen;
   static char FileBuffer[1024];
   char LastChar = '\0';
   char *Current;
@@ -201,51 +205,52 @@ ReadLines()
   LineLen = 0;
   while(ReadFile (FileHandle, FileBuffer, sizeof(FileBuffer), &ReadBytes, NULL) && ReadBytes >= sizeof(char))
   {
-    if(ReadBytes & 0x1)
-      ReadBytes--;
-    
     for(Current = FileBuffer; ReadBytes > 0; ReadBytes -= sizeof(char), Current++)
     {
       if(*Current == '\n' && LastChar == '\r')
       {
         LastChar = '\0';
-        if(LineLen > 0)
+        if(!SkipEmptyLines || (LineLen > 0))
-          Lines++;
+          StatInfo->LineCount++;
+        if(LineLen == 0)
+          StatInfo->EmptyLines++;
         LineLen = 0;
+        continue;
       }
-      LineLen++;
       LastChar = *Current;
-    }
+      if(SkipEmptyLines && (*Current == ' ' || *Current == '\t'))
-  }
-  
-  Lines += (LineLen > 0);
-  return Lines;
-}
-
-
-VOID
-DoStatisticsForFile(PFILE_INFO StatInfo)
       {
-  StatInfo->LineCount = ReadLines();
+        continue;
+      }
+      if(*Current != '\r')
+        LineLen++;
+    }
+  }
+  
+  StatInfo->LineCount += (LineLen > 0);
+  StatInfo->EmptyLines += ((LastChar != '\0') && (LineLen == 0));
 }
 
 
 VOID
-PrintStatistics()
+PrintStatistics(VOID)
 {
   PEXTENSION_INFO Info;
   DWORD TotalFileCount;
   DWORD TotalLineCount;
   DWORD TotalAvgLF;
+  DWORD TotalEmptyLines;
 
   TotalFileCount = 0;
   TotalLineCount = 0;
+  TotalEmptyLines = 0;
   Info = ExtInfoList;
   
   for (Info = ExtInfoList; Info != NULL; Info = Info->Next)
   {
     TotalFileCount += Info->FileCount;
     TotalLineCount += Info->LineCount;
+    TotalEmptyLines += Info->EmptyLines;
   }
   
   TotalAvgLF = (TotalFileCount ? TotalLineCount / TotalFileCount : 0);
@@ -268,6 +273,8 @@ PrintStatistics()
     _tprintf (_T("File ext. description       : %s\n"), Info->Description);
     _tprintf (_T("Number of files             : %lu\n"), Info->FileCount);
     _tprintf (_T("Number of lines             : %lu\n"), Info->LineCount);
+    if(SkipEmptyLines)
+      _tprintf (_T("Number of empty lines       : %lu\n"), Info->EmptyLines);
     _tprintf (_T("Proportion of lines         : %.2f %%\n"), (float)(TotalLineCount ? (((float)Info->LineCount * 100) / (float)TotalLineCount) : 0));
     _tprintf (_T("Average no. lines/file      : %lu\n"), AvgLF);
   }
@@ -275,6 +282,8 @@ PrintStatistics()
   _tprintf (_T("\n"));
   _tprintf (_T("Total number of files       : %lu\n"), TotalFileCount);
   _tprintf (_T("Total number of lines       : %lu\n"), TotalLineCount);
+  if(SkipEmptyLines)
+    _tprintf (_T("Total number of empty lines : %lu\n"), TotalEmptyLines);
   _tprintf (_T("Average no. lines/file      : %lu\n"), TotalAvgLF);
 }
 
@@ -324,10 +333,11 @@ ProcessFiles(LPTSTR Path)
 	            return FALSE;
 						}
 	
-				    DoStatisticsForFile (StatInfo);
+				    ReadLines (StatInfo);
 	
             Info->FileCount++;
 	          Info->LineCount += StatInfo->LineCount;
+	          Info->EmptyLines += StatInfo->EmptyLines;
 
 	          CleanupAfterFile();
 				  }
@@ -413,19 +423,36 @@ Execute(LPTSTR Path)
   PrintStatistics();
 }
 
+BOOLEAN
+IsOptionSet(TCHAR *Option)
+{
+  int i;
+  for(i = 0; i < MAX_OPTIONS; i++)
+  {
+    if(!Options[i])
+      continue;
+    
+    if(!_tcscmp(Options[i], Option))
+      return TRUE;
+  }
+  return FALSE;
+}
+
 
 int
 main (int argc, char * argv [])
 {
+  int a;
 #if UNICODE
   TCHAR Path[MAX_PATH + 1];
 #endif
 
   _tprintf (_T("\nReactOS project statistics generator.\n\n"));
 
-  if (argc < 2)
+  if (argc < 2 || argc > 2 + MAX_OPTIONS)
   {
-    _tprintf(_T("Usage: stats directory"));
+    _tprintf(_T("Usage: stats [-e] directory\n"));
+    _tprintf(_T("  -e: don't count empty lines"));
     return 1;
   }
 
@@ -433,12 +460,29 @@ main (int argc, char * argv [])
   AddExtension (_T("c\0\0"), _T("Ansi C Source files"));
   AddExtension (_T("cpp\0cxx\0\0"), _T("C++ Source files"));
   AddExtension (_T("h\0\0"), _T("Header files"));
+  
+  for(a = 1; a < argc - 1; a++)
+  {
+#if UNICODE
+    int len = lstrlenA(argv[a]);
+    TCHAR *str = (TCHAR*)HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(TCHAR));
+    if(MultiByteToWideChar(CP_ACP, 0, argv[a], -1, str, len + 1) > 0)
+      Options[a - 1] = str;
+    else
+      Options[a - 1] = NULL;
+#else
+    Options[a - 1] = argv[a];
+#endif
+  }
+  
+  SkipEmptyLines = IsOptionSet(_T("-e"));
+  
 #if UNICODE
   ZeroMemory(Path, sizeof(Path));
-  if(MultiByteToWideChar(CP_ACP, 0, argv[1], -1, Path, MAX_PATH) > 0)
+  if(MultiByteToWideChar(CP_ACP, 0, argv[argc - 1], -1, Path, MAX_PATH) > 0)
     Execute (Path);
 #else
-  Execute (argv[1]);
+  Execute (argv[argc - 1]);
 #endif
   Cleanup();