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/* EIOTAS
* Copyright (C) 2012 Jérémy Zurcher
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#include "eiotas_particle.h"
#include "eiotas_private.h"
static void update_link_value(Eiotas_Particle *particle, const char *field);
Eiotas_Particle* eiotas_particle_alloc()
{
BUILD_INSTANCE(Eiotas_Particle,particle);
particle->ts = 0;
particle->src = NULL;
particle->dst = NULL;
particle->dsts = eina_array_new(EIOTAS_PARTICLE_ARRAY_STEP);
particle->payload = eina_hash_string_small_new((Eina_Free_Cb)&eina_stringshare_del);
particle->merged = NULL;
particle->link_fields = eina_array_new(EIOTAS_PARTICLE_ARRAY_STEP);
particle->link_value = NULL;
particle->cur_dst = 0;
return particle;
}
void eiotas_particle_free(Eiotas_Particle *particle)
{
unsigned int i;
Eina_Stringshare *s;
Eiotas_Particle *p;
Eina_Inlist *li;
Eina_Array_Iterator it;
DBG("Particle free 0x%X",PRINTPTR(particle));
EINA_ARRAY_ITER_NEXT(particle->dsts, i, s, it) eina_stringshare_del(s);
eina_array_free(particle->dsts);
eina_hash_free(particle->payload);
EINA_INLIST_FOREACH_SAFE(particle->merged, li, p) eiotas_particle_free(p);
EINA_ARRAY_ITER_NEXT(particle->link_fields, i, s, it) eina_stringshare_del(s);
eina_array_free(particle->link_fields);
if(particle->link_value) eina_stringshare_del(particle->link_value);
free(particle);
}
EAPI void eiotas_particle_reset(Eiotas_Particle *particle)
{
unsigned int i;
Eina_Stringshare *s;
Eiotas_Particle *p;
Eina_Inlist *li;
Eina_Array_Iterator it;
particle->ts = 0;
particle->src = NULL;
particle->dst = NULL;
EINA_ARRAY_ITER_NEXT(particle->dsts, i, s, it) eina_stringshare_del(s);
eina_array_clean(particle->dsts);
eina_hash_free_buckets(particle->payload);
EINA_INLIST_FOREACH_SAFE(particle->merged, li, p) eiotas_particle_free(p);
particle->merged = NULL;
EINA_ARRAY_ITER_NEXT(particle->link_fields, i, s, it) eina_stringshare_del(s);
eina_array_clean(particle->link_fields);
if(particle->link_value) eina_stringshare_del(particle->link_value);
particle->link_value = NULL;
}
EAPI void eiotas_particle_init(Eiotas_Particle *particle, Eiotas_Iota *iota)
{
particle->src = iota;
particle->ts = time(NULL);
}
EAPI void eiotas_particle_merge(Eiotas_Particle *particle, const Eiotas_Particle *p)
{
particle->merged = eina_inlist_append(particle->merged, EINA_INLIST_GET((Eiotas_Particle*)p));
}
EAPI Eina_Bool eiotas_particle_has_dst(Eiotas_Particle *particle)
{
if(eina_array_count_get(particle->dsts)<=particle->cur_dst) return EINA_FALSE;
return ( (eina_array_data_get(particle->dsts,particle->cur_dst)==NULL) ? EINA_FALSE : EINA_TRUE );
}
EAPI void eiotas_particle_destinations_add(Eiotas_Particle *particle, const char* destinations)
{
int n;
char *dst, *sep;
Eina_Stringshare *s;
dst = (char*)destinations;
for(; *dst;) {
for(; *dst==' '; dst++) /* eat leading spaces */;
sep = dst;
for(; (*sep && *sep!=EIOTAS_FIELDS_SEP && *sep!=' '); sep++) /* search destination end */;
n = (sep-dst);
if(n==0) {
ERR("ignore empty destination");
} else {
s = eina_stringshare_add_length(dst,n);
eina_array_push(particle->dsts,s);
DBG("add dst >%s<",s);
}
for(; (*sep && *sep!=EIOTAS_FIELDS_SEP); sep++) /* eat whatever following */;
if(!*sep) return;
dst = sep+1;
}
}
EAPI void eiotas_particle_link_fields_set(Eiotas_Particle *particle, const char *link_fields)
{
int n;
unsigned int i;
Eina_Stringshare *s;
Eina_Array_Iterator it;
char *field, *sep;
EINA_ARRAY_ITER_NEXT(particle->link_fields, i, s, it) eina_stringshare_del(s);
eina_array_clean(particle->link_fields);
field = (char*)link_fields;
for(; *field;) {
for(; *field==' '; field++) /* eat leading spaces */;
sep = field;
for(; (*sep && *sep!=EIOTAS_FIELDS_SEP && *sep!=' '); sep++) /* search field end */;
n = (sep-field);
if(n==0) {
ERR("ignore empty field");
} else {
s = eina_stringshare_add_length(field,n);
eina_array_push(particle->link_fields,s);
DBG("add field >%s<",s);
}
for(; (*sep && *sep!=EIOTAS_FIELDS_SEP); sep++) /* eat whatever following */;
if(!*sep) return;
field = sep+1;
}
update_link_value(particle,NULL);
}
EAPI const char* eiotas_particle_data_get(Eiotas_Particle *particle, const char* key)
{
return eina_hash_find(particle->payload,key);
}
EAPI Eina_Bool eiotas_particle_data_set(Eiotas_Particle *particle, const char* key, const char* value)
{
unsigned int i;
Eina_Stringshare *s;
Eina_Array_Iterator it;
s = eina_stringshare_add(value);
if(!eina_hash_add(particle->payload,key,s)) return EINA_FALSE;
update_link_value(particle,key);
return EINA_TRUE;
}
EAPI Eina_Bool eiotas_particle_data_del(Eiotas_Particle *particle, const char* key)
{
unsigned int i;
Eina_Stringshare *s;
Eina_Array_Iterator it;
if(!eina_hash_del(particle->payload,key,NULL)) return EINA_FALSE;
update_link_value(particle,key);
return EINA_TRUE;
}
EAPI Eina_Bool eiotas_particle_match(Eiotas_Particle *particle, const Eiotas_Particle *p)
{
return ( (particle->link_value==p->link_value) ? EINA_TRUE : EINA_FALSE );
}
static void update_link_value(Eiotas_Particle *particle, const char *field)
{
unsigned int i;
unsigned int l,t;
Eina_Stringshare *k;
Eina_Stringshare *v;
Eina_Array_Iterator it;
Eina_Bool update;
char tmp[EIOTAS_MAX_VALUE_LENGTH];
char *dst;
if(field!=NULL) {
/* check if link_value has to be updated */
update = EINA_FALSE;
EINA_ARRAY_ITER_NEXT(particle->link_fields, i, k, it) {
if(strcmp(field,k)==0) {
update = EINA_TRUE;
break;
}
}
if(!update) return;
}
t = 1;
dst = tmp;
EINA_ARRAY_ITER_NEXT(particle->link_fields, i, k, it) {
v = eina_hash_find(particle->payload,k);
if(v!=NULL) {
l = strlen(v);
t += l;
if(t>EIOTAS_MAX_VALUE_LENGTH) {
ERR("buffer overflow (%d>%d) link_value untouched",t,EIOTAS_MAX_VALUE_LENGTH);
return;
}
memcpy(dst,v,l);
dst += l;
}
}
*dst='\0';
if(particle->link_value) {
if(t==1) {
eina_stringshare_del(particle->link_value);
particle->link_value = NULL;
} else if(strcmp(particle->link_value,tmp)!=0) {
eina_stringshare_del(particle->link_value);
particle->link_value = eina_stringshare_add(tmp);
}
/* else : keep the same stringshare */
} else if(t!=1) {
particle->link_value = eina_stringshare_add(tmp);
}
/* else : keep particle->link_value=NULL*/
}
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