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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <ctype.h>
#include <LongBow/runtime.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_HashCodeTable.h>
#include <parc/algol/parc_Hash.h>
#include <ccnx/forwarder/metis/config/metis_SymbolicNameTable.h>
struct metis_symblic_name_table {
PARCHashCodeTable *symbolicNameTable;
};
// ========================================================================================
// symbolic name table functions
static bool
_symbolicNameEquals(const void *keyA, const void *keyB)
{
return (strcasecmp((const char *) keyA, (const char *) keyB) == 0);
}
static HashCodeType
_symbolicNameHash(const void *keyA)
{
const char *str = (const char *) keyA;
size_t length = strlen(str);
return parcHash32_Data(str, length);
}
// ========================================================================================
MetisSymbolicNameTable *
metisSymbolicNameTable_Create(void)
{
MetisSymbolicNameTable *table = parcMemory_Allocate(sizeof(MetisSymbolicNameTable));
if (table) {
// key = char *
// value = uint32_t *
table->symbolicNameTable = parcHashCodeTable_Create(_symbolicNameEquals, _symbolicNameHash, parcMemory_DeallocateImpl, parcMemory_DeallocateImpl);
}
return table;
}
void
metisSymbolicNameTable_Destroy(MetisSymbolicNameTable **tablePtr)
{
MetisSymbolicNameTable *table = *tablePtr;
parcHashCodeTable_Destroy(&table->symbolicNameTable);
parcMemory_Deallocate((void **) &table);
*tablePtr = NULL;
}
static char *
_createKey(const char *symbolicName)
{
char *key = parcMemory_StringDuplicate(symbolicName, strlen(symbolicName));
// convert key to upper case
char *p = key;
// keeps looping until the first null
while ((*p = toupper(*p))) {
p++;
}
return key;
}
bool
metisSymbolicNameTable_Exists(MetisSymbolicNameTable *table, const char *symbolicName)
{
assertNotNull(table, "Parameter table must be non-null");
assertNotNull(symbolicName, "Parameter symbolicName must be non-null");
char *key = _createKey(symbolicName);
bool found = (parcHashCodeTable_Get(table->symbolicNameTable, key) != NULL);
parcMemory_Deallocate((void **) &key);
return found;
}
void
metisSymbolicNameTable_Remove(MetisSymbolicNameTable *table, const char *symbolicName)
{
assertNotNull(table, "Parameter table must be non-null");
assertNotNull(symbolicName, "Parameter symbolicName must be non-null");
char *key = _createKey(symbolicName);
parcHashCodeTable_Del(table->symbolicNameTable, key);
parcMemory_Deallocate((void **) &key);
}
bool
metisSymbolicNameTable_Add(MetisSymbolicNameTable *table, const char *symbolicName, unsigned connid)
{
assertNotNull(table, "Parameter table must be non-null");
assertNotNull(symbolicName, "Parameter symbolicName must be non-null");
assertTrue(connid < UINT32_MAX, "Parameter connid must be less than %u", UINT32_MAX);
char *key = _createKey(symbolicName);
uint32_t *value = parcMemory_Allocate(sizeof(uint32_t));
*value = connid;
bool success = parcHashCodeTable_Add(table->symbolicNameTable, key, value);
if (!success) {
parcMemory_Deallocate((void **) &key);
parcMemory_Deallocate((void **) &value);
}
return success;
}
unsigned
metisSymbolicNameTable_Get(MetisSymbolicNameTable *table, const char *symbolicName)
{
assertNotNull(table, "Parameter table must be non-null");
assertNotNull(symbolicName, "Parameter symbolicName must be non-null");
unsigned connid = UINT32_MAX;
char *key = _createKey(symbolicName);
uint32_t *value = parcHashCodeTable_Get(table->symbolicNameTable, key);
if (value) {
connid = *value;
}
parcMemory_Deallocate((void **) &key);
return connid;
}
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