blob.cpp

来自「最新的版本ACE-5.6.8,刚从外文网上搬下,与大家分享.」· C++ 代码 · 共 78 行

// $Id: Blob.cpp 80826 2008-03-04 14:51:23Z wotte $

#include "Blob.h"
#include "Blob_Handler.h"
#include "ace/OS_NS_string.h"

ACE_RCSID(Blobby, Blob, "$Id: Blob.cpp 80826 2008-03-04 14:51:23Z wotte $")

ACE_Blob::ACE_Blob (void)
{
}

ACE_Blob::~ACE_Blob (void)
{
  this->close ();
}

// initialize address and filename. No network i/o in open

int
ACE_Blob::open (const ACE_TCHAR *filename, const ACE_TCHAR *hostname , u_short port)
{
  filename_ = ACE_OS::strdup (filename);
  inet_addr_.set (port, hostname);
  return 0;
}

// read from connection length bytes from offset, into Message block

int
ACE_Blob::read (ACE_Message_Block *mb, size_t length, size_t offset)
{

  // Create a Blob Reader
  ACE_Blob_Reader blob_reader (mb, length, offset, filename_);
  ACE_Blob_Handler *brp = &blob_reader;

  // Connect to the server
  if (connector_.connect (brp, inet_addr_) == -1)
    ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "ACE_Blob::read():Connector error"), -1);

  return blob_reader.byte_count ();

}

// write to connection length bytes from offset, into Message block

int
ACE_Blob::write (ACE_Message_Block *mb, size_t length, size_t offset)
{

  // Create a Blob Writer
  ACE_Blob_Writer blob_writer (mb, length, offset, filename_);
  ACE_Blob_Handler *bwp = &blob_writer;

  // Connect to the server
  if (connector_.connect (bwp, inet_addr_) == -1)
    ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "ACE_Blob::write():Connector error"), -1);

  return blob_writer.byte_count ();
}

// close down the blob

int
ACE_Blob::close (void)
{

  if (filename_)
    {
      ACE_OS::free ((void *) filename_);
      filename_ = 0;
    }
  return 0;

}