/**
* cdk_stream_read: Try to read count bytes from the STREAM object.
* @s: The STREAM object.
* @buf: The buffer to insert the readed bytes.
* @count: Request so much bytes.
*
* When this function is called the first time, it can take a while
* because all filters need to be processed. Please remember that you
* need to add the filters in reserved order.
**/
int
cdk_stream_read( cdk_stream_t s, void * buf, size_t count )
{
int nread;
int rc;
if( !s )
return EOF;
if( s->flags.write && !s->flags.temp )
return EOF; /* this is a write stream */
if( !s->flags.no_filter && !s->cache.on && !s->flags.filtrated ) {
rc = stream_filter_read( s );
if( rc ) {
s->error = rc;
return EOF;
}
s->flags.filtrated = 1;
}
if( !buf && !count )
return 0;
nread = fread( buf, 1, count, s->fp );
if( !nread )
nread = EOF;
if( feof( s->fp ) )
s->flags.eof = 1;
return nread;
}
/**
* cdk_stream_read:
* @s: The STREAM object.
* @buf: The buffer to insert the readed bytes.
* @count: Request so much bytes.
*
* Tries to read count bytes from the STREAM object.
* When this function is called the first time, it can take a while
* because all filters need to be processed. Please remember that you
* need to add the filters in reserved order.
**/
int
cdk_stream_read (cdk_stream_t s, void *buf, size_t buflen)
{
int nread;
int rc;
if (!s)
{
s->error = CDK_Inv_Value;
gnutls_assert();
return EOF;
}
if (s->cbs_hd)
{
if (s->cbs.read)
return s->cbs.read (s->cbs_hd, buf, buflen);
return 0;
}
if (s->flags.write && !s->flags.temp)
{
s->error = CDK_Inv_Mode;
gnutls_assert();
return EOF; /* This is a write stream */
}
if (!s->flags.no_filter && !s->cache.on && !s->flags.filtrated)
{
rc = stream_filter_read (s);
if (rc)
{
s->error = rc;
if (feof (s->fp))
s->flags.eof = 1;
gnutls_assert();
return EOF;
}
s->flags.filtrated = 1;
}
if (!buf && !buflen)
return 0;
nread = fread (buf, 1, buflen, s->fp);
if (!nread)
nread = EOF;
if (feof (s->fp))
{
s->error = 0;
s->flags.eof = 1;
}
return nread;
}