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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTestUtilities.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkTestUtilities
* @brief Utility functions used for regression testing.
*
* vtkTestUtilities provides methods to perform common testing operations.
* These include getting a command line argument or an environment variable,
* or a default value. Particularly, there are specialized methods to get the
* root directory for VTK Data, expanding a filename with this root directory.
*/
#ifndef vtkTestUtilities_h
#define vtkTestUtilities_h
#include "vtkSystemIncludes.h"
#if defined(_MSC_VER) /* Visual C++ (and Intel C++) */
#pragma warning(disable : 4996) // 'function': was declared deprecated
#endif
struct vtkTestUtilities
{
/**
* Function necessary for accessing the root directory for VTK data. Try the
* -D command line argument or VTK_DATA_ROOT or a default value. The returned
* string has to be deleted (with delete[]) by the user.
*/
static inline char* GetDataRoot(int argc, char* argv[]);
/**
* Given a file name, this function returns a new string which is (in theory)
* the full path. This path is constructed by prepending the file name with a
* command line argument (-D path) or VTK_DATA_ROOT env. variable. If slash
* is true, appends a slash to the resulting string. The returned string has
* to be deleted (with delete[]) by the user.
*/
static inline char* ExpandDataFileName(int argc, char* argv[], const char* fname, int slash = 0);
/**
* Function returning either a command line argument, an environment variable
* or a default value. The returned string has to be deleted (with delete[])
* by the user.
*/
static inline char* GetArgOrEnvOrDefault(
const char* arg, int argc, char* argv[], const char* env, const char* def);
//@{
/**
* Given a file name, this function returns a new string which is (in theory)
* the full path. This path is constructed by prepending the file name with a
* command line argument, an environment variable or a default value. If
* slash is true, appends a slash to the resulting string. The returned
* string has to be deleted (with delete[]) by the user.
*/
static inline char* ExpandFileNameWithArgOrEnvOrDefault(const char* arg, int argc, char* argv[],
const char* env, const char* def, const char* fname, int slash = 0);
//@}
};
inline char* vtkTestUtilities::GetDataRoot(int argc, char* argv[])
{
return vtkTestUtilities::GetArgOrEnvOrDefault(
"-D", argc, argv, "VTK_DATA_ROOT", "../../../../VTKData");
}
inline char* vtkTestUtilities::ExpandDataFileName(
int argc, char* argv[], const char* fname, int slash)
{
return vtkTestUtilities::ExpandFileNameWithArgOrEnvOrDefault(
"-D", argc, argv, "VTK_DATA_ROOT", "../../../../VTKData", fname, slash);
}
inline char* vtkTestUtilities::GetArgOrEnvOrDefault(
const char* arg, int argc, char* argv[], const char* env, const char* def)
{
int index = -1;
for (int i = 0; i < argc; i++)
{
if (strcmp(arg, argv[i]) == 0 && i < argc - 1)
{
index = i + 1;
}
}
char* value;
if (index != -1)
{
value = new char[strlen(argv[index]) + 1];
strcpy(value, argv[index]);
}
else
{
char* foundenv = getenv(env);
if (foundenv)
{
value = new char[strlen(foundenv) + 1];
strcpy(value, foundenv);
}
else if (def)
{
value = new char[strlen(def) + 1];
strcpy(value, def);
}
else
{
value = nullptr;
}
}
return value;
}
inline char* vtkTestUtilities::ExpandFileNameWithArgOrEnvOrDefault(const char* arg, int argc,
char* argv[], const char* env, const char* def, const char* fname, int slash)
{
char* fullName;
char* value = vtkTestUtilities::GetArgOrEnvOrDefault(arg, argc, argv, env, def);
if (value)
{
fullName = new char[strlen(value) + strlen(fname) + 2 + static_cast<size_t>(slash ? 1 : 0)];
fullName[0] = 0;
strcat(fullName, value);
size_t len = strlen(fullName);
fullName[len] = '/';
fullName[len + 1] = 0;
strcat(fullName, fname);
}
else
{
fullName = new char[strlen(fname) + 1 + static_cast<size_t>(slash ? 1 : 0)];
strcpy(fullName, fname);
}
if (slash)
{
strcat(fullName, "/");
}
delete[] value;
return fullName;
}
#endif // vtkTestUtilities_h
// VTK-HeaderTest-Exclude: vtkTestUtilities.h
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