// turn an URI into an internal prefix (watch out: this modifies the uri string)
struct ccnl_prefix_s *
ccnl_URItoPrefix(char* uri, int suite, char *nfnexpr, unsigned int *chunknum)
{
struct ccnl_prefix_s *p;
char *compvect[CCNL_MAX_NAME_COMP];
unsigned int complens[CCNL_MAX_NAME_COMP];
int cnt, i, len, tlen;
DEBUGMSG_CPFX(TRACE, "ccnl_URItoPrefix(suite=%s, uri=%s, nfn=%s)\n",
ccnl_suite2str(suite), uri, nfnexpr);
if (strlen(uri))
cnt = ccnl_URItoComponents(compvect, complens, uri);
else
cnt = 0;
if (nfnexpr && *nfnexpr)
cnt += 1;
p = ccnl_prefix_new(suite, cnt);
if (!p)
return NULL;
for (i = 0, len = 0; i < cnt; i++) {
if (i == (cnt-1) && nfnexpr && *nfnexpr)
len += strlen(nfnexpr);
else
len += complens[i];//strlen(compvect[i]);
}
#ifdef USE_SUITE_CCNTLV
if (suite == CCNL_SUITE_CCNTLV)
len += cnt * 4; // add TL size
#endif
#ifdef USE_SUITE_CISTLV
if (suite == CCNL_SUITE_CISTLV)
len += cnt * 4; // add TL size
#endif
p->bytes = (unsigned char*) ccnl_malloc(len);
if (!p->bytes) {
free_prefix(p);
return NULL;
}
for (i = 0, len = 0, tlen = 0; i < cnt; i++) {
int isnfnfcomp = i == (cnt-1) && nfnexpr && *nfnexpr;
char *cp = isnfnfcomp ? nfnexpr : (char*) compvect[i];
if (isnfnfcomp)
tlen = strlen(nfnexpr);
else
tlen = complens[i];
p->comp[i] = p->bytes + len;
tlen = ccnl_pkt_mkComponent(suite, p->comp[i], cp, tlen);
p->complen[i] = tlen;
len += tlen;
}
p->compcnt = cnt;
#ifdef USE_NFN
if (nfnexpr && *nfnexpr)
p->nfnflags |= CCNL_PREFIX_NFN;
#endif
if(chunknum) {
p->chunknum = ccnl_malloc(sizeof(int));
*p->chunknum = *chunknum;
}
return p;
}
int
ccnl_lambdaStrToComponents(char **compVector, char *str)
{
return ccnl_URItoComponents(compVector, NULL, str);
}