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/********************************************************************
* Description: cms_up.cc
* Provides the interface to CMS used by NML update functions
* including a CMS update function for all the basic C data types.
*
* Derived from a work by Fred Proctor & Will Shackleford
*
* Author:
* License: LGPL Version 2
* System: Linux
*
* Copyright (c) 2004 All rights reserved.
*
* Last change:
********************************************************************/
#include "cms.hh" /* class CMS */
#include "cms_up.hh" /* class CMS_UPDATER */
#include "rcs_print.hh" /* rcs_print_error() */
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h> // malloc(), free()
#include <string.h> // memset()
#ifdef __cplusplus
}
#endif
CMS_UPDATER::CMS_UPDATER(CMS * _cms_parent, int create_encoded_data,
long _neutral_size_factor):
/**********************************************
* Aliases to variables in the CMS parent
* using aliases lets CMS and its CMS_UPDATER share this information
* more conveniently and allowed the CMS_UPDATER functions to be pulled out
* of CMS with fewer changes. (WPS - 6/12/95)
*********************************************/
encoded_data(_cms_parent->encoded_data),
encoded_header(_cms_parent->encoded_header),
encoded_queuing_header(_cms_parent->encoded_queuing_header),
status(_cms_parent->status),
size(_cms_parent->size),
encoded_header_size(_cms_parent->encoded_header_size),
encoded_queuing_header_size(_cms_parent->encoded_queuing_header_size),
using_external_encoded_data(_cms_parent->using_external_encoded_data),
pointer_check_disabled(_cms_parent->pointer_check_disabled),
encoded_data_size(_cms_parent->encoded_data_size)
{
cms_parent = _cms_parent;
mode = CMS_NO_UPDATE;
neutral_size_factor = _neutral_size_factor;
if (encoded_data == NULL && create_encoded_data) {
if (cms_parent->enc_max_size > 0
&& cms_parent->enc_max_size < neutral_size_factor * size) {
set_encoded_data(malloc(cms_parent->enc_max_size),
cms_parent->enc_max_size);
} else {
set_encoded_data(malloc(neutral_size_factor * size),
neutral_size_factor * size);
}
using_external_encoded_data = 0;
}
}
CMS_UPDATER::~CMS_UPDATER()
{
}
void CMS_UPDATER::rewind()
{
}
int CMS_UPDATER::set_mode(CMS_UPDATER_MODE _mode)
{
mode = _mode;
switch (mode) {
case CMS_NO_UPDATE:
break;
case CMS_ENCODE_DATA:
encoding = 1;
break;
case CMS_DECODE_DATA:
encoding = 0;
break;
case CMS_ENCODE_HEADER:
encoding = 1;
break;
case CMS_DECODE_HEADER:
encoding = 0;
break;
case CMS_ENCODE_QUEUING_HEADER:
encoding = 1;
break;
case CMS_DECODE_QUEUING_HEADER:
encoding = 0;
break;
default:
rcs_print_error("CMS updater in invalid mode.\n");
return (-1);
}
return (0);
}
CMS_UPDATER_MODE CMS_UPDATER::get_mode()
{
return mode;
}
int CMS_UPDATER::check_pointer(char *_pointer, long _bytes)
{
if (NULL == cms_parent) {
return (-1);
}
return (cms_parent->check_pointer(_pointer, _bytes));
}
void CMS_UPDATER::set_encoded_data(void *_encoded_data,
long _encoded_data_size)
{
if (NULL != encoded_data &&
!using_external_encoded_data && encoded_data != _encoded_data) {
free(encoded_data);
encoded_data = NULL;
}
encoded_data = _encoded_data;
encoded_data_size = _encoded_data_size;
using_external_encoded_data = 1;
}
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