NITFPRIV(const char **) doInit(nitf_DLL * dll,
const char *prefix,
nitf_Error * error)
{
NITF_PLUGIN_INIT_FUNCTION init;
const char **ident;
char name[NITF_MAX_PATH];
memset(name, 0, NITF_MAX_PATH);
NITF_SNPRINTF(name, NITF_MAX_PATH, "%s%s", prefix, NITF_PLUGIN_INIT_SUFFIX);
init = (NITF_PLUGIN_INIT_FUNCTION) nitf_DLL_retrieve(dll, name, error);
if (!init)
{
nitf_Error_print(error, stdout, "Invalid init hook in DSO");
return NULL;
}
/* Else, call it */
ident = (*init)(error);
if (!ident)
{
nitf_Error_initf(error,
NITF_CTXT,
NITF_ERR_INVALID_OBJECT,
"The plugin [%s] is not retrievable", prefix);
return NULL;
}
return ident;
}
NITFPRIV(NITF_BOOL) insertCreator(nitf_DLL* dso,
nitf_HashTable* hash,
const char* ident,
const char* suffix,
nitf_Error* error)
{
/* We are trying to find tre_main */
NITF_DLL_FUNCTION_PTR dsoMain = NULL;
/* Get the name of the handler */
char name[NITF_MAX_PATH];
char* p = NULL;
if (!nitf_DLL_isValid(dso))
{
nitf_Error_initf(error,
NITF_CTXT,
NITF_ERR_INVALID_PARAMETER,
"DSO is not valid for [%s]",
ident);
}
memset(name, 0, NITF_MAX_PATH);
NITF_SNPRINTF(name, NITF_MAX_PATH, "%s%s", ident, suffix);
nitf_Utils_replace(name, ' ', '_');
/* No error has occurred (yet) */
#if NITF_DEBUG_PLUGIN_REG
printf("Loading function [%s] in dso at [%p]\n", name, dso);
#endif
/* Retrieve the main */
dsoMain = nitf_DLL_retrieve(dso, name, error);
if (!dsoMain)
{
/* If it didnt work, we are done */
return NITF_FAILURE;
}
#if NITF_DEBUG_PLUGIN_REG
if (nitf_HashTable_exists(hash, ident))
{
printf("Warning, overriding [%s] hook", ident);
}
#endif
return nitf_HashTable_insert(hash, ident, dsoMain, error);
}
/*
* Cleanup the DLL. This is called once when the registry is
* shut down.
*/
NITFPRIV(int) doCleanup(nitf_DLL * dll, nitf_Error* error)
{
NITF_PLUGIN_CLEANUP_FUNCTION cleanup;
const char* cleanupName = NITF_PLUGIN_CLEANUP;
cleanup = (NITF_PLUGIN_CLEANUP_FUNCTION)nitf_DLL_retrieve(dll,
cleanupName,
error);
if (!cleanup)
{
return 0;
}
/* Else, call it */
cleanup();
return 1;
}