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|
/*****************************************************************
|
| Neptune - Environment variables: StdC Implementation
|
| (c) 2002-2006 Gilles Boccon-Gibod
| Author: Gilles Boccon-Gibod (bok@bok.net)
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include <stdlib.h>
#include "NptConfig.h"
#include "NptUtils.h"
#include "NptResults.h"
/*----------------------------------------------------------------------
| NPT_Environment::Get
+---------------------------------------------------------------------*/
NPT_Result
NPT_Environment::Get(const char* name, NPT_String& value)
{
char* env = nullptr;
/* default value */
value.SetLength(0);
#if defined(NPT_CONFIG_HAVE_GETENV)
env = getenv(name);
if (env) {
value = env;
return NPT_SUCCESS;
} else {
return NPT_ERROR_NO_SUCH_ITEM;
}
#elif defined(NPT_CONFIG_HAVE_DUPENV_S)
if (dupenv_s(&env, NULL, name) != 0) {
return NPT_FAILURE;
} else if (env != NULL) {
value = env;
free(env);
return NPT_SUCCESS;
} else {
return NPT_ERROR_NO_SUCH_ITEM;
}
#else
return NPT_ERROR_NOT_SUPPORTED;
#endif
}
/*----------------------------------------------------------------------
| NPT_Environment::Set
+---------------------------------------------------------------------*/
NPT_Result
NPT_Environment::Set(const char* name, const char* value)
{
if (value) {
#if defined(NPT_CONFIG_HAVE_SETENV)
// set the variable
setenv(name, value, 1); // ignore return value (some platforms have this function as void)
return NPT_SUCCESS;
#elif defined(NPT_CONFIG_HAVE_PUTENV_S)
return putenv_s(name, value)==0?NPT_SUCCESS:NPT_FAILURE;
#else
return NPT_ERROR_NOT_SUPPORTED;
#endif
} else {
// remove the variable
#if defined(NPT_CONFIG_HAVE_UNSETENV)
unsetenv(name); // ignore return value (some platforms have this function as void)
return NPT_SUCCESS;
#elif defined(NPT_CONFIG_HAVE_PUTENV_S)
return putenv_s(name, "")==0?NPT_SUCCESS:NPT_FAILURE;
#else
return NPT_ERROR_NOT_SUPPORTED;
#endif
}
}
|
