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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2016 Kévin Dietrich.
* All rights reserved.
*/
/** \file
* \ingroup balembic
*/
#include "abc_reader_archive.h"
#include "BKE_main.h"
#include "BLI_path_util.h"
#include "BLI_string.h"
#ifdef WIN32
# include "utfconv.h"
#endif
#include <fstream>
using Alembic::Abc::ErrorHandler;
using Alembic::Abc::Exception;
using Alembic::Abc::IArchive;
using Alembic::Abc::kWrapExisting;
static IArchive open_archive(const std::string &filename,
const std::vector<std::istream *> &input_streams,
bool &is_hdf5)
{
is_hdf5 = false;
try {
Alembic::AbcCoreOgawa::ReadArchive archive_reader(input_streams);
return IArchive(archive_reader(filename), kWrapExisting, ErrorHandler::kThrowPolicy);
}
catch (const Exception &e) {
std::cerr << e.what() << '\n';
#ifdef WITH_ALEMBIC_HDF5
try {
is_hdf5 = true;
Alembic::AbcCoreAbstract::ReadArraySampleCachePtr cache_ptr;
return IArchive(Alembic::AbcCoreHDF5::ReadArchive(),
filename.c_str(),
ErrorHandler::kThrowPolicy,
cache_ptr);
}
catch (const Exception &) {
std::cerr << e.what() << '\n';
return IArchive();
}
#else
/* Inspect the file to see whether it's really a HDF5 file. */
char header[4]; /* char(0x89) + "HDF" */
std::ifstream the_file(filename.c_str(), std::ios::in | std::ios::binary);
if (!the_file) {
std::cerr << "Unable to open " << filename << std::endl;
}
else if (!the_file.read(header, sizeof(header))) {
std::cerr << "Unable to read from " << filename << std::endl;
}
else if (strncmp(header + 1, "HDF", 3)) {
std::cerr << filename << " has an unknown file format, unable to read." << std::endl;
}
else {
is_hdf5 = true;
std::cerr << filename << " is in the obsolete HDF5 format, unable to read." << std::endl;
}
if (the_file.is_open()) {
the_file.close();
}
return IArchive();
#endif
}
return IArchive();
}
ArchiveReader::ArchiveReader(struct Main *bmain, const char *filename)
{
char abs_filename[FILE_MAX];
BLI_strncpy(abs_filename, filename, FILE_MAX);
BLI_path_abs(abs_filename, BKE_main_blendfile_path(bmain));
#ifdef WIN32
UTF16_ENCODE(abs_filename);
std::wstring wstr(abs_filename_16);
m_infile.open(wstr.c_str(), std::ios::in | std::ios::binary);
UTF16_UN_ENCODE(abs_filename);
#else
m_infile.open(abs_filename, std::ios::in | std::ios::binary);
#endif
m_streams.push_back(&m_infile);
m_archive = open_archive(abs_filename, m_streams, m_is_hdf5);
/* We can't open an HDF5 file from a stream, so close it. */
if (m_is_hdf5) {
m_infile.close();
m_streams.clear();
}
}
bool ArchiveReader::is_hdf5() const
{
return m_is_hdf5;
}
bool ArchiveReader::valid() const
{
return m_archive.valid();
}
Alembic::Abc::IObject ArchiveReader::getTop()
{
return m_archive.getTop();
}
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