assimp/code/AssetLib/X3D/X3DImporter.cpp

190 lines
5.6 KiB
C++

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2021, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
/// \file X3DImporter.cpp
/// \brief X3D-format files importer for Assimp: main algorithm implementation.
/// \date 2015-2016
/// \author smal.root@gmail.com
#ifndef ASSIMP_BUILD_NO_X3D_IMPORTER
#include "X3DImporter.hpp"
#include <assimp/StringUtils.h>
// Header files, Assimp.
#include <assimp/DefaultIOSystem.h>
#include <assimp/fast_atof.h>
// Header files, stdlib.
#include <iterator>
#include <memory>
#include <string>
namespace Assimp {
/// Constant which holds the importer description
const aiImporterDesc X3DImporter::Description = {
"Extensible 3D(X3D) Importer",
"smalcom",
"",
"See documentation in source code. Chapter: Limitations.",
aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportBinaryFlavour | aiImporterFlags_LimitedSupport | aiImporterFlags_Experimental,
0,
0,
0,
0,
"x3d x3db"
};
struct WordIterator {
using iterator_category = std::input_iterator_tag;
using value_type = const char *;
using difference_type = ptrdiff_t;
using pointer = value_type *;
using reference = value_type &;
static const char *whitespace;
const char *mStart, *mEnd;
WordIterator(const char *start, const char *end) :
mStart(start),
mEnd(end) {
mStart = start + ::strspn(start, whitespace);
if (mStart >= mEnd) {
mStart = 0;
}
}
WordIterator() :
mStart(0),
mEnd(0) {}
WordIterator(const WordIterator &other) :
mStart(other.mStart),
mEnd(other.mEnd) {}
WordIterator &operator=(const WordIterator &other) {
mStart = other.mStart;
mEnd = other.mEnd;
return *this;
}
bool operator==(const WordIterator &other) const { return mStart == other.mStart; }
bool operator!=(const WordIterator &other) const { return mStart != other.mStart; }
WordIterator &operator++() {
mStart += strcspn(mStart, whitespace);
mStart += strspn(mStart, whitespace);
if (mStart >= mEnd) {
mStart = 0;
}
return *this;
}
WordIterator operator++(int) {
WordIterator result(*this);
++(*this);
return result;
}
const char *operator*() const { return mStart; }
};
const char *WordIterator::whitespace = ", \t\r\n";
X3DImporter::X3DImporter() :
mNodeElementCur(nullptr) {
// empty
}
X3DImporter::~X3DImporter() {
// Clear() is accounting if data already is deleted. So, just check again if all data is deleted.
Clear();
}
void X3DImporter::Clear() {
mNodeElementCur = nullptr;
// Delete all elements
if (!NodeElement_List.empty()) {
for (std::list<X3DNodeElementBase *>::iterator it = NodeElement_List.begin(); it != NodeElement_List.end(); ++it) {
delete *it;
}
NodeElement_List.clear();
}
}
void X3DImporter::ParseFile(const std::string &file, IOSystem *pIOHandler) {
ai_assert(nullptr != pIOHandler);
static const std::string mode = "rb";
std::unique_ptr<IOStream> fileStream(pIOHandler->Open(file, mode));
if (!fileStream.get()) {
throw DeadlyImportError("Failed to open file " + file + ".");
}
}
bool X3DImporter::CanRead( const std::string &pFile, IOSystem * /*pIOHandler*/, bool checkSig ) const {
if (checkSig) {
std::string::size_type pos = pFile.find_last_of(".x3d");
if (pos != std::string::npos) {
return true;
}
}
return false;
}
void X3DImporter::GetExtensionList( std::set<std::string> &extensionList ) {
extensionList.insert("x3d");
}
void X3DImporter::InternReadFile( const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler ) {
std::shared_ptr<IOStream> stream(pIOHandler->Open(pFile, "rb"));
if (!stream) {
throw DeadlyImportError("Could not open file for reading");
}
pScene->mRootNode = new aiNode(pFile);
}
const aiImporterDesc *X3DImporter::GetInfo() const {
return &Description;
}
}
#endif // !ASSIMP_BUILD_NO_X3D_IMPORTER