288 lines
6.4 KiB
C
288 lines
6.4 KiB
C
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#include <errno.h>
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#include "mavl.h"
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#include "debug.h"
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#include "dbg.h"
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#include "log.h"
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#include "message_set.h"
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static int cmp_cw_elemhandler_by_id(const mavldata_t * elem1, const mavldata_t *elem2){
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struct cw_ElemHandler * e1 = elem1->ptr;
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struct cw_ElemHandler * e2 = elem2->ptr;
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int r;
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r = e1->id - e2->id;
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if (r!=0)
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return r;
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r = e1->vendor - e2->vendor;
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if (r!=0)
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return r;
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r = e1->proto - e2->proto;
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if (r != 0)
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return r;
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return 0;
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}
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static int cmp_cw_elemhandler_by_key(const mavldata_t *elem1, const mavldata_t *elem2){
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struct cw_ElemHandler * e1 = elem1->ptr;
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struct cw_ElemHandler * e2 = elem2->ptr;
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return strcmp(e1->key,e2->key);
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}
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static int cmp_msgdata(const mavldata_t * elem1, const mavldata_t *elem2)
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{
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struct cw_MsgData * e1 = elem1->ptr;
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struct cw_MsgData * e2 = elem2->ptr;
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return e1->type - e2->type;
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}
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static int cmp_elemdata(const mavldata_t * elem1, const mavldata_t *elem2)
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{
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struct cw_ElemData * e1 = elem1->ptr;
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struct cw_ElemData * e2 = elem2->ptr;
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int r;
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r = e1->id - e2->id;
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if (r!=0)
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return r;
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r = e1->vendor - e2->vendor;
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if (r!=0)
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return r;
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r = e1->proto - e2->proto;
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if (r != 0)
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return r;
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return 0;
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}
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static void msgdata_destroy(struct cw_MsgData *data){
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if (!data)
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return;
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/* if (data->elements_list)
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mlist_destroy(data->elements_list);
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*/
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if (data->elements_tree)
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mavl_destroy( data->elements_tree );
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free(data);
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}
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static struct cw_MsgData * msgdata_create(int type){
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struct cw_MsgData * msg;
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msg = malloc( sizeof(struct cw_MsgData));
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if (!msg)
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return NULL;
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msg->elements_tree = mavl_create(cmp_elemdata,mavl_free_bin);
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if (!msg->elements_tree){
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msgdata_destroy(msg);
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return NULL;
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}
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msg->type=type;
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return msg;
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}
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static void del_mavl_msdgdata( mavldata_t * d ){
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msgdata_destroy(d->ptr);
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}
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/**
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* @brief Destroy a message set
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* @param set Message set to destroy
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*/
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void cw_msgset_destroy(struct cw_MsgSet * set){
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if (set->messages)
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mavl_destroy(set->messages);
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if (set->handlers_by_id)
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mavl_destroy(set->handlers_by_id);
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if (set->handlers_by_key)
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mavl_destroy(set->handlers_by_key);
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free(set);
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}
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/**
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* @brief Create a message set
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* @return Message set create, NULL if an error has occured
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*/
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struct cw_MsgSet * cw_msgset_create(){
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/* allocate memory for a message_set */
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struct cw_MsgSet * set = malloc(sizeof(struct cw_MsgSet ));
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if (set==NULL)
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return NULL;
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memset(set,0,sizeof(struct cw_MsgSet));
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/* create mavl for all_elems by id */
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set->handlers_by_id = mavl_create(cmp_cw_elemhandler_by_id,mavl_free_bin);
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if (set->handlers_by_id==NULL){
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cw_msgset_destroy(set);
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return NULL;
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}
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/* create mavl for all_elems by id */
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set->handlers_by_key = mavl_create(cmp_cw_elemhandler_by_key,NULL);
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if (set->handlers_by_key==NULL){
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cw_msgset_destroy(set);
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return NULL;
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}
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/* create mavl for messages */
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set->messages = mavl_create(cmp_msgdata,del_mavl_msdgdata);
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if (set->messages==NULL){
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cw_msgset_destroy(set);
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return NULL;
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}
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return set;
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}
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struct cw_ElemHandler * cw_msgset_get_elemhandler(struct cw_MsgSet * set,
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int proto, int vendor, int id)
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{
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struct cw_ElemHandler search;
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search.proto=proto;
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search.vendor=vendor;
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search.id=id;
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return mavl_find_ptr(set->handlers_by_id,&search);
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}
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static int update_msgdata(struct cw_MsgSet * set, struct cw_MsgData * msgdata,
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struct cw_MsgDef * msgdef)
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{
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struct cw_ElemDef * elemdef;
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mavldata_t mavldata, *result;
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/* iterate through all defined elements */
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for(elemdef = msgdef->elements; elemdef->id; elemdef++){
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struct cw_ElemHandler * handler;
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handler = cw_msgset_get_elemhandler(set,
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elemdef->proto,
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elemdef->vendor,
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elemdef->id);
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/* check if a handler for our element already exists */
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if (!handler){
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cw_log(LOG_ERR, "No handler for message element: %d %d %d",
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elemdef->proto,
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elemdef->vendor,
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elemdef->id);
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continue;
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}
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mavldata.ptr = malloc(sizeof(struct cw_ElemData));
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if (!mavldata.ptr){
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cw_log(LOG_ERR,"Can't create ElemData element: %s",strerror(errno));
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}
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((struct cw_ElemData *)(mavldata.ptr))->id=elemdef->id;
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((struct cw_ElemData *)(mavldata.ptr))->proto=elemdef->proto;
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((struct cw_ElemData *)(mavldata.ptr))->vendor=elemdef->vendor;
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((struct cw_ElemData *)(mavldata.ptr))->mand=elemdef->mand;
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result = mavl_replace(msgdata->elements_tree, &mavldata);
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if (result != &mavldata){
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cw_dbg(DBG_MOD, " adding message element %d %d %d - %s",
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elemdef->proto,
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elemdef->vendor,
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elemdef->id,
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handler->name);
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}
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else{
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cw_dbg(DBG_MOD, " replaceing message element %d %d %d - %s",
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elemdef->proto,
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elemdef->vendor,
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elemdef->id,
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handler->name);
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}
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}
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return 0;
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}
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int cw_msgset_add(struct cw_MsgSet * set,
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struct cw_MsgDef messages[],
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struct cw_ElemHandler handlers[]
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){
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struct cw_ElemHandler * handler;
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struct cw_MsgDef * msgdef;
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/* Create mavl for all handlers */
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for(handler = handlers; handler->id; handler++){
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mavldata_t copy;
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copy.ptr = malloc(sizeof(struct cw_ElemHandler));
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if (!copy.ptr){
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cw_log(LOG_ERR,"Can't alloc mem:", strerror(errno));
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continue;
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}
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cw_dbg(DBG_MOD,"Adding handler for element %d - %s - with key: %s",
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handler->id,
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handler->name,
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handler->key);
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memcpy(copy.ptr,handler,sizeof(struct cw_ElemHandler));
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mavl_replace(set->handlers_by_id,©);
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mavl_replace(set->handlers_by_key,©);
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}
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for (msgdef=messages; msgdef->type !=0; msgdef++){
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struct cw_MsgData search, *msg;
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/* Look if message already exists */
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search.type=msgdef->type;
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msg = mavl_find_ptr(set->messages,&search);
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if (!msg){
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msg = msgdata_create(msgdef->type);
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if (!msg){
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cw_log(LOG_ERR,"Can't create messae");
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return 0;
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}
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mavl_add_ptr(set->messages,msg);
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}
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/* Overwrite the found message */
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if (msgdef->name)
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msg->name=msgdef->name;
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if (msgdef->states)
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msg->states=msgdef->states;
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msg->receiver=msgdef->receiver;
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cw_dbg(DBG_MOD, "Add message Type:%d - %s ",msgdef->type,msgdef->name);
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update_msgdata(set,msg,msgdef);
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}
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return 0;
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}
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/**
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* @brief Find message data to a specific message
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* @param set message set
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* @param type message type to search for
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* @return message data or NULL if not found
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*/
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struct cw_MsgData * cw_msgset_get_msgdata(struct cw_MsgSet *set,int type){
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struct cw_MsgData search;
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search.type=type;
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return mavl_find_ptr(set->messages,&search);
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}
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