TestDriver: Revise C++ coding style using clang-format

Templates/TestDriver.cxx.in

 #include <ctype.h>
 #include <stdio.h>
-#include <string.h>
 #include <stdlib.h>
+#include <string.h>
 
 #if defined(_MSC_VER)
-# pragma warning(disable:4996) /* deprecation */
+#pragma warning(disable : 4996) /* deprecation */
 #endif
 
 @CMAKE_TESTDRIVER_EXTRA_INCLUDES@
 
-
 /* Forward declare test functions. */
 @CMAKE_FORWARD_DECLARE_TESTS@
 
 /* Create map.  */
 
-typedef int (*MainFuncPointer)(int , char*[]);
+typedef int (*MainFuncPointer)(int, char* []);
 typedef struct
 {
   const char* name;
@@ -24,33 +23,31 @@ typedef struct
 
 static functionMapEntry cmakeGeneratedFunctionMapEntries[] = {
   @CMAKE_FUNCTION_TABLE_ENTIRES@
-  {0,0}
+  { 0, 0 }
 };
 
 /* Allocate and create a lowercased copy of string
    (note that it has to be free'd manually) */
 
-static char* lowercase(const char *string)
+static char* lowercase(const char* string)
 {
   char *new_string, *p;
   size_t stringSize = 0;
 
 #ifdef __cplusplus
   stringSize = static_cast<size_t>(strlen(string) + 1);
-  new_string = static_cast<char *>(malloc(sizeof(char) * stringSize));
+  new_string = static_cast<char*>(malloc(sizeof(char) * stringSize));
 #else
   stringSize = (size_t)(strlen(string) + 1);
-  new_string = (char *)(malloc(sizeof(char) * stringSize));
+  new_string = (char*)(malloc(sizeof(char) * stringSize));
 #endif
 
-  if (!new_string)
-    {
+  if (!new_string) {
     return 0;
-    }
+  }
   strncpy(new_string, string, stringSize);
   p = new_string;
-  while (*p != 0)
-    {
+  while (*p != 0) {
 #ifdef __cplusplus
     *p = static_cast<char>(tolower(*p));
 #else
@@ -58,11 +55,11 @@ static char* lowercase(const char *string)
 #endif
 
     ++p;
-    }
+  }
   return new_string;
 }
 
-int main(int ac, char *av[])
+int main(int ac, char* av[])
 {
   int i, NumTests, testNum = 0, partial_match;
   char *arg, *test_name;
@@ -71,96 +68,79 @@ int main(int ac, char *av[])
 
   @CMAKE_TESTDRIVER_ARGVC_FUNCTION@
 
-  for(count =0; cmakeGeneratedFunctionMapEntries[count].name != 0; count++)
-    {
-    }
+  for (count = 0; cmakeGeneratedFunctionMapEntries[count].name != 0; count++) {
+  }
   NumTests = count;
   /* If no test name was given */
   /* process command line with user function.  */
-  if (ac < 2)
-    {
+  if (ac < 2) {
     /* Ask for a test.  */
     printf("Available tests:\n");
-    for (i =0; i < NumTests; ++i)
-      {
+    for (i = 0; i < NumTests; ++i) {
       printf("%3d. %s\n", i, cmakeGeneratedFunctionMapEntries[i].name);
-      }
+    }
     printf("To run a test, enter the test number: ");
     fflush(stdout);
-    if( scanf("%d", &testNum) != 1 )
-      {
+    if (scanf("%d", &testNum) != 1) {
       printf("Couldn't parse that input as a number\n");
       return -1;
-      }
-    if (testNum >= NumTests)
-      {
+    }
+    if (testNum >= NumTests) {
       printf("%3d is an invalid test number.\n", testNum);
       return -1;
-      }
+    }
     testToRun = testNum;
     ac--;
     av++;
-    }
+  }
   partial_match = 0;
   arg = 0;
   /* If partial match is requested.  */
-  if(testToRun == -1 && ac > 1)
-    {
+  if (testToRun == -1 && ac > 1) {
     partial_match = (strcmp(av[1], "-R") == 0) ? 1 : 0;
-    }
-  if (partial_match && ac < 3)
-    {
+  }
+  if (partial_match && ac < 3) {
     printf("-R needs an additional parameter.\n");
     return -1;
-    }
-  if(testToRun == -1)
-    {
+  }
+  if (testToRun == -1) {
     arg = lowercase(av[1 + partial_match]);
-    }
-  for (i =0; i < NumTests && testToRun == -1; ++i)
-    {
+  }
+  for (i = 0; i < NumTests && testToRun == -1; ++i) {
     test_name = lowercase(cmakeGeneratedFunctionMapEntries[i].name);
-    if (partial_match && strstr(test_name, arg) != NULL)
-      {
+    if (partial_match && strstr(test_name, arg) != NULL) {
       testToRun = i;
-      ac -=2;
+      ac -= 2;
       av += 2;
-      }
-    else if (!partial_match && strcmp(test_name, arg) == 0)
-      {
+    } else if (!partial_match && strcmp(test_name, arg) == 0) {
       testToRun = i;
       ac--;
       av++;
-      }
-    free(test_name);
     }
-  if(arg)
-    {
+    free(test_name);
+  }
+  if (arg) {
     free(arg);
-    }
-  if(testToRun != -1)
-    {
+  }
+  if (testToRun != -1) {
     int result;
 @CMAKE_TESTDRIVER_BEFORE_TESTMAIN@
-    if (testToRun < 0 || testToRun >= NumTests)
-      {
-      printf(
-        "testToRun was modified by TestDriver code to an invalid value: %3d.\n",
-        testNum);
+    if (testToRun < 0 || testToRun >= NumTests) {
+      printf("testToRun was modified by TestDriver code to an invalid value: "
+             "%3d.\n",
+             testNum);
       return -1;
-      }
+    }
     result = (*cmakeGeneratedFunctionMapEntries[testToRun].func)(ac, av);
 @CMAKE_TESTDRIVER_AFTER_TESTMAIN@
     return result;
-    }
-
+  }
 
   /* Nothing was run, display the test names.  */
   printf("Available tests:\n");
-  for (i =0; i < NumTests; ++i)
-    {
+  for (i = 0; i < NumTests; ++i) {
     printf("%3d. %s\n", i, cmakeGeneratedFunctionMapEntries[i].name);
-    }
+  }
   printf("Failed: %s is an invalid test name.\n", av[1]);
 
   return -1;