nitf_PluginRegistry_retrieveCompConstructor(nitf_PluginRegistry * reg,
const char *ident,
int *hadError,
nitf_Error * error)
{
/* We get back a pair from the hash table */
nitf_Pair *pair;
/* No error has occurred (yet) */
*hadError = 0;
if (!nitf_HashTable_exists(reg->compressionHandlers, ident))
{
*hadError = 1;
nitf_Error_init(error, "Compression handlers not set", NRT_CTXT,
NRT_ERR_COMPRESSION);
return NULL;
}
pair = nitf_HashTable_find(reg->compressionHandlers, ident);
/* If nothing is there, we don't have a handler, plain and simple */
if (!pair)
{
nitf_Error_initf(error, NRT_CTXT, NRT_ERR_COMPRESSION,
"Don't have a handler for '%s'",
ident);
return NULL;
}
return (NITF_PLUGIN_COMPRESSION_CONSTRUCT_FUNCTION) pair->data;
}
nitf_PluginRegistry_retrieveTREHandler(nitf_PluginRegistry * reg,
const char *treIdent,
int *hadError,
nitf_Error * error)
{
nitf_TREHandler* theHandler;
/* We get back a pair from the hash table */
nitf_Pair *pair;
/* We are trying to find tre_main */
NITF_PLUGIN_TRE_HANDLER_FUNCTION treMain = NULL;
/* No error has occurred (yet) */
*hadError = 0;
if (!nitf_HashTable_exists(reg->treHandlers, treIdent))
{
return NULL;
}
/* Lookup the pair from the hash table, by the tre_id */
pair = nitf_HashTable_find(reg->treHandlers, treIdent);
/* If nothing is there, we dont have a handler, plain and simple */
if (!pair)
return NULL;
/* If something is, get its DLL part */
treMain = (NITF_PLUGIN_TRE_HANDLER_FUNCTION) pair->data;
theHandler = (*treMain)(error);
if (!theHandler)
{
*hadError = 1;
}
return theHandler;
}
void findInExtensions(nitf_Extensions* ext)
{
/* These iterators are for going through the image segments */
nitf_ListIterator iter;
nitf_ListIterator end;
nitf_List* list;
assert( ext );
list = nitf_Extensions_get(ext, "ACFTB");
if (list)
{
/* Set the iterator to traverse the list of image segments */
iter = nitf_List_begin(list);
/* And set this one to the end, so we'll know when we're done! */
end = nitf_List_end(list);
/* While we are not done... */
while ( nitf_ListIterator_notEqualTo(&iter, &end) )
{
nitf_TRE* tre;
printf("Found ACFTB instance\n");
/* Get the image segment as its proper object */
tre = (nitf_TRE*)nitf_ListIterator_get(&iter);
if ( nitf_HashTable_exists( tre->hash, "raw_data" ) )
{
printf("Your plugin for ACFTB was not loaded so the data is contained in the RAW section\n");
}
else
{
nitf_Pair* mission = nitf_HashTable_find( tre->hash,
"ACMSNID" );
if (! mission )
{
printf("Error: no Mission ID available\n");
nitf_HashTable_print( tre->hash );
}
else
{
nitf_Field* field = (nitf_Field*)mission->data;
printf("Mission ID: [%.*s]\n", field->length, field->raw);
}
}
/* Increment the iterator so we can continue */
nitf_ListIterator_increment(&iter);
}
}
else
{
printf("No ACFTB\n");
}
}
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);
}
nitf_PluginRegistry_registerTREHandler(NITF_PLUGIN_INIT_FUNCTION init,
NITF_PLUGIN_TRE_HANDLER_FUNCTION handle,
nitf_Error * error)
{
nitf_PluginRegistry* reg = nitf_PluginRegistry_getInstance(error);
const char** ident;
int i = 1;
int ok = 1;
if (!reg)
{
return NITF_FAILURE;
}
if ( (ident = (*init)(error)) == NULL)
{
return NITF_FAILURE;
}
if (!ident[0] || (strcmp(ident[0], NITF_PLUGIN_TRE_KEY) != 0))
{
nitf_Error_initf(error,
NITF_CTXT,
NITF_ERR_INVALID_OBJECT,
"Expected a TRE identity");
return NITF_FAILURE;
}
for (; ident[i] != NULL; ++i)
{
#ifdef NITF_DEBUG_PLUGIN_REG
if (nitf_HashTable_exists(reg->treHandlers, ident[i]))
{
printf("Warning, static handler overriding [%s] hook\n", ident[i]);
}
#endif
ok &= nitf_HashTable_insert(reg->treHandlers, ident[i], (NITF_DATA*)handle, error);
}
return ok;
}
NITFPRIV(NITF_BOOL) defaultSetField(nitf_TRE * tre,
const char *tag,
NITF_DATA * data,
size_t dataLength, nitf_Error * error)
{
nitf_Field* field = NULL;
if (strcmp(tag, NITF_TRE_RAW))
{
nitf_Error_initf(error, NITF_CTXT, NITF_ERR_INVALID_PARAMETER, "Invalid param [%s]", tag);
return NITF_FAILURE;
}
field = nitf_Field_construct(dataLength, NITF_BINARY, error);
if (!field)
return NITF_FAILURE;
/* TODO -- likely inefficient, since we end up copying the raw data here */
if (!nitf_Field_setRawData(field, (NITF_DATA *) data, dataLength, error))
return NITF_FAILURE;
if (nitf_HashTable_exists(((nitf_TREPrivateData*)tre->priv)->hash, tag))
{
nitf_Field* oldValue;
nitf_Pair* pair = nitf_HashTable_find(
((nitf_TREPrivateData*)tre->priv)->hash, tag);
oldValue = (nitf_Field*)pair->data;
nitf_Field_destruct(&oldValue);
pair->data = field;
return NITF_SUCCESS;
}
/* reset the lengths in two places */
((nitf_TREPrivateData*)tre->priv)->length = dataLength;
((nitf_TREPrivateData*)tre->priv)->description[0].data_count = dataLength;
return nitf_HashTable_insert(((nitf_TREPrivateData*)tre->priv)->hash,
tag, field, error);
}
nitf_PluginRegistry_internalTREHandlerExists(nitf_PluginRegistry* reg,
const char* ident)
{
return nitf_HashTable_exists(reg->treHandlers, ident);
}
NITFAPI(NITF_BOOL) nitf_TREUtils_setValue(nitf_TRE * tre,
const char *tag,
NITF_DATA * data,
size_t dataLength,
nitf_Error * error)
{
nitf_Pair *pair;
nitf_Field *field = NULL;
nitf_TRECursor cursor;
NITF_BOOL done = 0;
NITF_BOOL status = 1;
nitf_FieldType type = NITF_BCS_A;
/* used temporarily for storing the length */
int length;
/* get out if TRE is null */
if (!tre)
{
nitf_Error_init(error, "setValue -> invalid tre object",
NITF_CTXT, NITF_ERR_INVALID_PARAMETER);
return NITF_FAILURE;
}
/* If the field already exists, get it and modify it */
if (nitf_HashTable_exists(((nitf_TREPrivateData*)tre->priv)->hash, tag))
{
pair = nitf_HashTable_find(
((nitf_TREPrivateData*)tre->priv)->hash, tag);
field = (nitf_Field *) pair->data;
if (!field)
{
nitf_Error_initf(error, NITF_CTXT, NITF_ERR_INVALID_PARAMETER,
"setValue -> invalid field object: %s", tag);
return NITF_FAILURE;
}
/* check to see if the data passed in is too large or too small */
if ((dataLength > field->length && !field->resizable) || dataLength < 1)
{
nitf_Error_initf(error, NITF_CTXT, NITF_ERR_INVALID_PARAMETER,
"setValue -> invalid dataLength for field: %s", tag);
return NITF_FAILURE;
}
if (!nitf_Field_setRawData
(field, (NITF_DATA *) data, dataLength, error))
{
return NITF_FAILURE;
}
#ifdef NITF_DEBUG
fprintf(stdout, "Setting (and filling) Field [%s] to TRE [%s]\n",
tag, tre->tag);
#endif
/* Now we need to fill our data */
if (!nitf_TREUtils_fillData(tre,
((nitf_TREPrivateData*)tre->priv)->description,
error))
return NITF_FAILURE;
}
/* it doesn't exist in the hash yet, so we need to find it */
else
{
cursor = nitf_TRECursor_begin(tre);
while (!nitf_TRECursor_isDone(&cursor) && !done && status)
{
if (nitf_TRECursor_iterate(&cursor, error) == NITF_SUCCESS)
{
/* we found it */
if (strcmp(tag, cursor.tag_str) == 0)
{
if (cursor.desc_ptr->data_type == NITF_BCS_A)
{
type = NITF_BCS_A;
}
else if (cursor.desc_ptr->data_type == NITF_BCS_N)
{
type = NITF_BCS_N;
}
else if (cursor.desc_ptr->data_type == NITF_BINARY)
{
type = NITF_BINARY;
}
else
{
/* bad type */
nitf_Error_init(error,
"setValue -> invalid data type",
NITF_CTXT,
NITF_ERR_INVALID_PARAMETER);
return NITF_FAILURE;
}
length = cursor.length;
/* check to see if we should gobble the rest */
if (length == NITF_TRE_GOBBLE)
{
length = dataLength;
}
/* construct the field */
field = nitf_Field_construct(length, type, error);
/* now, set the data */
nitf_Field_setRawData(field, (NITF_DATA *) data,
dataLength, error);
#ifdef NITF_DEBUG
fprintf(stdout, "Adding (and filling) Field [%s] to TRE [%s]\n",
cursor.tag_str, tre->tag);
#endif
/* add to the hash */
nitf_HashTable_insert(
((nitf_TREPrivateData*)tre->priv)->hash,
cursor.tag_str, field, error);
/* Now we need to fill our data */
if (!nitf_TREUtils_fillData(tre, ((nitf_TREPrivateData*)tre->priv)->description, error))
return NITF_FAILURE;
done = 1; /* set, so we break out of loop */
}
}
}
/* did we find it? */
if (!done)
{
nitf_Error_initf(error, NITF_CTXT, NITF_ERR_UNK,
"Unable to find tag, '%s', in TRE hash for TRE '%s'",
tag, tre->tag);
status = 0;
}
nitf_TRECursor_cleanup(&cursor);
}
return status;
}
bool nitf::HashTable::exists(const std::string& key)
{
return nitf_HashTable_exists(getNative(), key.c_str());
}