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#include "d4includes.h"
#include "d4curlfunctions.h"
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include "ncwinpath.h"
/* Do conversion if this code was compiled via Vis. Studio or Mingw */
/*Forward*/
static int readpacket(NCD4INFO* state, NCURI*, NCbytes*, NCD4mode, long*);
static int readfile(NCD4INFO* state, const NCURI*, const char* suffix, NCbytes* packet);
static int readfiletofile(NCD4INFO* state, const NCURI*, const char* suffix, FILE* stream, d4size_t*);
#ifdef HAVE_GETTIMEOFDAY
static struct timeval time0;
static struct timeval time1;
static double
deltatime()
{
double t0, t1;
t0 = ((double)time0.tv_sec);
t0 += ((double)time0.tv_usec) / 1000000.0;
t1 = ((double)time1.tv_sec);
t1 += ((double)time1.tv_usec) / 1000000.0;
return (t1 - t0);
}
#endif
int
NCD4_readDMR(NCD4INFO* state)
{
int stat = NC_NOERR;
long lastmodified = -1;
stat = readpacket(state,state->uri,state->curl->packet,NCD4_DMR,&lastmodified);
if(stat == NC_NOERR)
state->data.dmrlastmodified = lastmodified;
return THROW(stat);
}
int
NCD4_readDAP(NCD4INFO* state, int flags)
{
int stat = NC_NOERR;
long lastmod = -1;
if((flags & NCF_ONDISK) == 0) {
stat = readpacket(state,state->uri,state->curl->packet,NCD4_DAP,&lastmod);
if(stat == NC_NOERR)
state->data.daplastmodified = lastmod;
} else { /*((flags & NCF_ONDISK) != 0) */
NCURI* url = state->uri;
int fileprotocol = (strcmp(url->protocol,"file")==0);
if(fileprotocol) {
stat = readfiletofile(state, url, ".dap", state->data.ondiskfile, &state->data.datasize);
} else {
char* readurl = NULL;
int flags = 0;
if(!fileprotocol) flags |= NCURIQUERY;
flags |= NCURIENCODE;
flags |= NCURIPWD;
#ifdef FIX
ncurisetconstraints(url,state->constraint);
#endif
readurl = ncuribuild(url,NULL,".dods",NCURISVC);
if(readurl == NULL)
return THROW(NC_ENOMEM);
stat = NCD4_fetchurl_file(state->curl, readurl, state->data.ondiskfile,
&state->data.datasize, &lastmod);
nullfree(readurl);
if(stat == NC_NOERR)
state->data.daplastmodified = lastmod;
}
}
return THROW(stat);
}
static const char*
dxxextension(int dxx)
{
switch(dxx) {
case NCD4_DMR: return ".dmr";
case NCD4_DAP: return ".dap";
default: break;
}
return NULL;
}
static int
readpacket(NCD4INFO* state, NCURI* url, NCbytes* packet, NCD4mode dxx, long* lastmodified)
{
int stat = NC_NOERR;
int fileprotocol = 0;
const char* suffix = dxxextension(dxx);
CURL* curl = state->curl->curl;
fileprotocol = (strcmp(url->protocol,"file")==0);
if(fileprotocol) {
/* Short circuit file://... urls*/
/* We do this because the test code always needs to read files*/
stat = readfile(state, url,suffix,packet);
} else {
char* fetchurl = NULL;
int flags = NCURIBASE;
if(!fileprotocol) flags |= NCURIQUERY;
flags |= NCURIENCODE;
fetchurl = ncuribuild(url,NULL,suffix,flags);
MEMCHECK(fetchurl);
if(FLAGSET(state->controls.flags,NCF_SHOWFETCH)) {
nclog(NCLOGDBG,"fetch url=%s",fetchurl);
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&time0,NULL);
#endif
}
stat = NCD4_fetchurl(curl,fetchurl,packet,lastmodified);
nullfree(fetchurl);
if(stat) goto fail;
if(FLAGSET(state->controls.flags,NCF_SHOWFETCH)) {
double secs = 0;
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&time1,NULL);
secs = deltatime();
#endif
nclog(NCLOGDBG,"fetch complete: %0.3f",secs);
}
}
#ifdef D4DEBUG
{
fprintf(stderr,"readpacket: packet.size=%lu\n",
(unsigned long)ncbyteslength(packet));
}
#endif
fail:
return THROW(stat);
}
static int
readfiletofile(NCD4INFO* state, const NCURI* uri, const char* suffix, FILE* stream, d4size_t* sizep)
{
int stat = NC_NOERR;
NCbytes* packet = ncbytesnew();
size_t len;
stat = readfile(state, uri,suffix,packet);
#ifdef D4DEBUG
fprintf(stderr,"readfiletofile: packet.size=%lu\n",
(unsigned long)ncbyteslength(packet));
#endif
if(stat != NC_NOERR) goto unwind;
len = nclistlength(packet);
if(stat == NC_NOERR) {
size_t written;
fseek(stream,0,SEEK_SET);
written = fwrite(ncbytescontents(packet),1,len,stream);
if(written != len) {
#ifdef D4DEBUG
fprintf(stderr,"readfiletofile: written!=length: %lu :: %lu\n",
(unsigned long)written,(unsigned long)len);
#endif
stat = NC_EIO;
}
}
if(sizep != NULL) *sizep = len;
unwind:
ncbytesfree(packet);
return THROW(stat);
}
static int
readfile(NCD4INFO* state, const NCURI* uri, const char* suffix, NCbytes* packet)
{
int stat = NC_NOERR;
NCbytes* tmp = ncbytesnew();
char* filename = NULL;
ncbytescat(tmp,uri->path);
if(suffix != NULL) ncbytescat(tmp,suffix);
ncbytesnull(tmp);
filename = ncbytesextract(tmp);
ncbytesfree(tmp);
state->fileproto.filename = filename; /* filename is alloc'd here anyway */
if(FLAGSET(state->controls.flags,NCF_SHOWFETCH)) {
char* surl = NULL;
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&time0,NULL);
#endif
surl = ncuribuild((NCURI*)uri,NULL,NULL,NCURIALL);
nclog(NCLOGDBG,"fetch uri=%s file=%s",surl,filename);
}
stat = NC_readfile(filename,packet);
if(FLAGSET(state->controls.flags,NCF_SHOWFETCH)) {
double secs;
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&time1,NULL);
secs = deltatime();
#endif
nclog(NCLOGDBG,"fetch complete: %0.3f",secs);
}
return THROW(stat);
}
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