/home/master/UCL/VisualizationLibrary/src/vlGraphics/plugins/ioVLX.cpp

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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2010, Michele Bosi                                             */
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#include <vlGraphics/plugins/ioVLX.hpp>
#include <vlCore/Time.hpp>

using namespace vl;

//-----------------------------------------------------------------------------
ref<ResourceDatabase> vl::loadVLT(const String& path)
{
  ref<VirtualFile> file = vl::locateFile(path);
  return loadVLT(file.get());
}
//-----------------------------------------------------------------------------
ref<ResourceDatabase> vl::loadVLT(VirtualFile* file)
{
  VLXSerializer serializer;

  ref<Object> obj = serializer.loadVLT(file);

  if (serializer.error())
    Log::error( Say("vl::loadVLT : VLXSerializer reported: %s.\n") << serializer.errorString() );

  if (!obj)
    return NULL;

  ref<ResourceDatabase> res_db = obj->as<ResourceDatabase>();

  return res_db;
}
//-----------------------------------------------------------------------------
ref<ResourceDatabase> vl::loadVLB(const String& path)
{
  ref<VirtualFile> file = vl::locateFile(path);
  return loadVLB(file.get());
}
//-----------------------------------------------------------------------------
ref<ResourceDatabase> vl::loadVLB(VirtualFile* file)
{
  VLXSerializer serializer;

  ref<Object> obj = serializer.loadVLB(file);

  if (serializer.error())
    Log::error( Say("vl::loadVLB : VLXSerializer reported: %s.\n") << serializer.errorString() );

  if (!obj)
    return NULL;

  ref<ResourceDatabase> res_db = obj->as<ResourceDatabase>();

  return res_db;
}
//-----------------------------------------------------------------------------
bool vl::saveVLT(const String& path, const ResourceDatabase* res_db)
{
  ref<DiskFile> file = new DiskFile(path);
  return saveVLT(file.get(), res_db);
}
//-----------------------------------------------------------------------------
bool vl::saveVLT(VirtualFile* file, const ResourceDatabase* res_db)
{
  VL_CHECK(res_db);
  if (!res_db)
    return false;

  VLXSerializer serializer;
  serializer.saveVLT( file, res_db );

  if (serializer.error())
    Log::error( Say("vl::saveVLT : VLXSerializer reported: %s.\n") << serializer.errorString() );

  return serializer.error() == VLXSerializer::NoError;
}
//-----------------------------------------------------------------------------
bool vl::saveVLB(const String& path, const ResourceDatabase* res_db)
{
  ref<DiskFile> file = new DiskFile(path);
  return saveVLB(file.get(), res_db);
}
//-----------------------------------------------------------------------------
bool vl::saveVLB(VirtualFile* file, const ResourceDatabase* res_db)
{
  VL_CHECK(res_db);
  if (!res_db)
    return false;

  VLXSerializer serializer;
  serializer.saveVLB( file, res_db );

  if (serializer.error())
    Log::error( Say("vl::saveVLB : VLXSerializer reported: %s.\n") << serializer.errorString() );

  return serializer.error() == VLXSerializer::NoError;
}
//-----------------------------------------------------------------------------
bool vl::isVLT(const String& path)
{
  ref<VirtualFile> file = vl::locateFile(path);
  return isVLT(file.get());
}
//-----------------------------------------------------------------------------
bool vl::isVLT(VirtualFile* file)
{
  if (!file)
    return false;
  char vlx[12] = { 0 };
  memset(vlx, 0, sizeof(vlx));
  file->close();
  file->open(OM_ReadOnly);
  file->read(vlx, sizeof(vlx));
  file->close();
  return memcmp(vlx, "VLX version=", sizeof(vlx)) == 0;
}
//-----------------------------------------------------------------------------
bool vl::isVLB(const String& path)
{
  ref<VirtualFile> file = vl::locateFile(path);
  return isVLT(file.get());
}
//-----------------------------------------------------------------------------
bool vl::isVLB(VirtualFile* file)
{
  if (!file)
    return false;
  unsigned char vlx_identifier[] = { 0xAB, 'V', 'L', 'X', 0xBB, 0x0D, 0x0A, 0x1A, 0x0A };
  unsigned char vlx[sizeof(vlx_identifier)];
  memset(vlx, 0, sizeof(vlx));
  file->close();
  file->open(OM_ReadOnly);
  file->read(vlx, sizeof(vlx));
  file->close();
  return memcmp(vlx, vlx_identifier, sizeof(vlx_identifier)) == 0;
}
//-----------------------------------------------------------------------------