add assimp submodule

1 files changed, 563 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/Common/ZipArchiveIOSystem.cpp b/src/mesh/assimp-master/code/Common/ZipArchiveIOSystem.cpp
new file mode 100644
index 0000000..c322b14
--- /dev/null
+++ b/src/mesh/assimp-master/code/Common/ZipArchiveIOSystem.cpp
@@ -0,0 +1,563 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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  ZipArchiveIOSystem.cpp
+ *  @brief Zip File I/O implementation for #Importer
+ */
+
+#include <assimp/BaseImporter.h>
+#include <assimp/ZipArchiveIOSystem.h>
+
+#include <assimp/ai_assert.h>
+
+#include <map>
+#include <memory>
+
+#ifdef ASSIMP_USE_HUNTER
+#    include <minizip/unzip.h>
+#else
+#    include <unzip.h>
+#endif
+
+namespace Assimp {
+
+// ----------------------------------------------------------------
+// A read-only file inside a ZIP
+
+class ZipFile : public IOStream {
+    friend class ZipFileInfo;
+    explicit ZipFile(std::string &filename, size_t size);
+
+public:
+    std::string m_Filename;
+    virtual ~ZipFile();
+
+    // IOStream interface
+    size_t Read(void *pvBuffer, size_t pSize, size_t pCount) override;
+    size_t Write(const void * /*pvBuffer*/, size_t /*pSize*/, size_t /*pCount*/) override { return 0; }
+    size_t FileSize() const override;
+    aiReturn Seek(size_t pOffset, aiOrigin pOrigin) override;
+    size_t Tell() const override;
+    void Flush() override {}
+
+private:
+    size_t m_Size = 0;
+    size_t m_SeekPtr = 0;
+    std::unique_ptr<uint8_t[]> m_Buffer;
+};
+
+
+// ----------------------------------------------------------------
+// Wraps an existing Assimp::IOSystem for unzip
+class IOSystem2Unzip {
+public:
+    static voidpf open(voidpf opaque, const char *filename, int mode);
+    static voidpf opendisk(voidpf opaque, voidpf stream, uint32_t number_disk, int mode);
+    static uLong read(voidpf opaque, voidpf stream, void *buf, uLong size);
+    static uLong write(voidpf opaque, voidpf stream, const void *buf, uLong size);
+    static long tell(voidpf opaque, voidpf stream);
+    static long seek(voidpf opaque, voidpf stream, uLong offset, int origin);
+    static int close(voidpf opaque, voidpf stream);
+    static int testerror(voidpf opaque, voidpf stream);
+    static zlib_filefunc_def get(IOSystem *pIOHandler);
+};
+
+voidpf IOSystem2Unzip::open(voidpf opaque, const char *filename, int mode) {
+    IOSystem *io_system = reinterpret_cast<IOSystem *>(opaque);
+
+    const char *mode_fopen = nullptr;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ) {
+        mode_fopen = "rb";
+    } else {
+        if (mode & ZLIB_FILEFUNC_MODE_EXISTING) {
+            mode_fopen = "r+b";
+        } else {
+            if (mode & ZLIB_FILEFUNC_MODE_CREATE) {
+                mode_fopen = "wb";
+            }
+        }
+    }
+
+    return (voidpf)io_system->Open(filename, mode_fopen);
+}
+
+voidpf IOSystem2Unzip::opendisk(voidpf opaque, voidpf stream, uint32_t number_disk, int mode) {
+    ZipFile *io_stream = (ZipFile *)stream;
+    voidpf ret = NULL;
+    size_t i;
+
+    char *disk_filename = (char*)malloc(io_stream->m_Filename.length() + 1);
+    strncpy(disk_filename, io_stream->m_Filename.c_str(), io_stream->m_Filename.length() + 1);
+    for (i = io_stream->m_Filename.length() - 1; i >= 0; i -= 1)
+    {
+        if (disk_filename[i] != '.')
+            continue;
+        snprintf(&disk_filename[i], io_stream->m_Filename.length() - i, ".z%02u", number_disk + 1);
+        break;
+    }
+
+    if (i >= 0)
+        ret = open(opaque, disk_filename, mode);
+
+    free(disk_filename);
+    return ret;
+}
+
+uLong IOSystem2Unzip::read(voidpf /*opaque*/, voidpf stream, void *buf, uLong size) {
+    IOStream *io_stream = (IOStream *)stream;
+
+    return static_cast<uLong>(io_stream->Read(buf, 1, size));
+}
+
+uLong IOSystem2Unzip::write(voidpf /*opaque*/, voidpf stream, const void *buf, uLong size) {
+    IOStream *io_stream = (IOStream *)stream;
+
+    return static_cast<uLong>(io_stream->Write(buf, 1, size));
+}
+
+long IOSystem2Unzip::tell(voidpf /*opaque*/, voidpf stream) {
+    IOStream *io_stream = (IOStream *)stream;
+
+    return static_cast<long>(io_stream->Tell());
+}
+
+long IOSystem2Unzip::seek(voidpf /*opaque*/, voidpf stream, uLong offset, int origin) {
+    IOStream *io_stream = (IOStream *)stream;
+
+    aiOrigin assimp_origin;
+    switch (origin) {
+        default:
+        case ZLIB_FILEFUNC_SEEK_CUR:
+            assimp_origin = aiOrigin_CUR;
+            break;
+        case ZLIB_FILEFUNC_SEEK_END:
+            assimp_origin = aiOrigin_END;
+            break;
+        case ZLIB_FILEFUNC_SEEK_SET:
+            assimp_origin = aiOrigin_SET;
+            break;
+    }
+
+    return (io_stream->Seek(offset, assimp_origin) == aiReturn_SUCCESS ? 0 : -1);
+}
+
+int IOSystem2Unzip::close(voidpf opaque, voidpf stream) {
+    IOSystem *io_system = (IOSystem *)opaque;
+    IOStream *io_stream = (IOStream *)stream;
+
+    io_system->Close(io_stream);
+
+    return 0;
+}
+
+int IOSystem2Unzip::testerror(voidpf /*opaque*/, voidpf /*stream*/) {
+    return 0;
+}
+
+zlib_filefunc_def IOSystem2Unzip::get(IOSystem *pIOHandler) {
+    zlib_filefunc_def mapping;
+
+    mapping.zopen_file = (open_file_func)open;
+    mapping.zopendisk_file = (opendisk_file_func)opendisk;
+    mapping.zread_file = (read_file_func)read;
+    mapping.zwrite_file = (write_file_func)write;
+    mapping.ztell_file = (tell_file_func)tell;
+    mapping.zseek_file = (seek_file_func)seek;
+    mapping.zclose_file = (close_file_func)close;
+    mapping.zerror_file = testerror;
+
+    mapping.opaque = reinterpret_cast<voidpf>(pIOHandler);
+
+    return mapping;
+}
+
+// ----------------------------------------------------------------
+// Info about a read-only file inside a ZIP
+class ZipFileInfo {
+public:
+    explicit ZipFileInfo(unzFile zip_handle, size_t size);
+
+    // Allocate and Extract data from the ZIP
+    ZipFile *Extract(std::string &filename, unzFile zip_handle) const;
+
+private:
+    size_t m_Size = 0;
+    unz_file_pos_s m_ZipFilePos;
+};
+
+ZipFileInfo::ZipFileInfo(unzFile zip_handle, size_t size) :
+        m_Size(size) {
+    ai_assert(m_Size != 0);
+    // Workaround for MSVC 2013 - C2797
+    m_ZipFilePos.num_of_file = 0;
+    m_ZipFilePos.pos_in_zip_directory = 0;
+    unzGetFilePos(zip_handle, &(m_ZipFilePos));
+}
+
+ZipFile *ZipFileInfo::Extract(std::string &filename, unzFile zip_handle) const {
+    // Find in the ZIP. This cannot fail
+    unz_file_pos_s *filepos = const_cast<unz_file_pos_s *>(&(m_ZipFilePos));
+    if (unzGoToFilePos(zip_handle, filepos) != UNZ_OK)
+        return nullptr;
+
+    if (unzOpenCurrentFile(zip_handle) != UNZ_OK)
+        return nullptr;
+
+    ZipFile *zip_file = new ZipFile(filename, m_Size);
+
+    // Unzip has a limit of UINT16_MAX bytes buffer
+    uint16_t unzipBufferSize = zip_file->m_Size <= UINT16_MAX ? static_cast<uint16_t>(zip_file->m_Size) : UINT16_MAX;
+    std::unique_ptr<uint8_t[]> unzipBuffer = std::unique_ptr<uint8_t[]>(new uint8_t[unzipBufferSize]);
+    size_t readCount = 0;
+    while (readCount < zip_file->m_Size)
+    {
+        size_t bufferSize = zip_file->m_Size - readCount;
+        if (bufferSize > UINT16_MAX) {
+            bufferSize = UINT16_MAX;
+        }
+
+        int ret = unzReadCurrentFile(zip_handle, unzipBuffer.get(), static_cast<unsigned int>(bufferSize));
+        if (ret != static_cast<int>(bufferSize))
+        {
+            // Failed, release the memory
+            delete zip_file;
+            zip_file = nullptr;
+            break;
+        }
+
+        std::memcpy(zip_file->m_Buffer.get() + readCount, unzipBuffer.get(), ret);
+        readCount += ret;
+    }
+
+    ai_assert(unzCloseCurrentFile(zip_handle) == UNZ_OK);
+    return zip_file;
+}
+
+ZipFile::ZipFile(std::string &filename, size_t size) :
+        m_Filename(filename), m_Size(size) {
+    ai_assert(m_Size != 0);
+    m_Buffer = std::unique_ptr<uint8_t[]>(new uint8_t[m_Size]);
+}
+
+ZipFile::~ZipFile() {
+}
+
+size_t ZipFile::Read(void *pvBuffer, size_t pSize, size_t pCount) {
+    // Should be impossible
+    ai_assert(m_Buffer != nullptr);
+    ai_assert(nullptr != pvBuffer);
+    ai_assert(0 != pSize);
+    ai_assert(0 != pCount);
+
+    // Clip down to file size
+    size_t byteSize = pSize * pCount;
+    if ((byteSize + m_SeekPtr) > m_Size) {
+        pCount = (m_Size - m_SeekPtr) / pSize;
+        byteSize = pSize * pCount;
+        if (byteSize == 0) {
+            return 0;
+        }
+    }
+
+    std::memcpy(pvBuffer, m_Buffer.get() + m_SeekPtr, byteSize);
+
+    m_SeekPtr += byteSize;
+
+    return pCount;
+}
+
+size_t ZipFile::FileSize() const {
+    return m_Size;
+}
+
+aiReturn ZipFile::Seek(size_t pOffset, aiOrigin pOrigin) {
+    switch (pOrigin) {
+        case aiOrigin_SET: {
+            if (pOffset > m_Size) return aiReturn_FAILURE;
+            m_SeekPtr = pOffset;
+            return aiReturn_SUCCESS;
+        }
+
+        case aiOrigin_CUR: {
+            if ((pOffset + m_SeekPtr) > m_Size) return aiReturn_FAILURE;
+            m_SeekPtr += pOffset;
+            return aiReturn_SUCCESS;
+        }
+
+        case aiOrigin_END: {
+            if (pOffset > m_Size) return aiReturn_FAILURE;
+            m_SeekPtr = m_Size - pOffset;
+            return aiReturn_SUCCESS;
+        }
+        default:;
+    }
+
+    return aiReturn_FAILURE;
+}
+
+size_t ZipFile::Tell() const {
+    return m_SeekPtr;
+}
+
+// ----------------------------------------------------------------
+// pImpl of the Zip Archive IO
+class ZipArchiveIOSystem::Implement {
+public:
+    static const unsigned int FileNameSize = 256;
+
+    Implement(IOSystem *pIOHandler, const char *pFilename, const char *pMode);
+    ~Implement();
+
+    bool isOpen() const;
+    void getFileList(std::vector<std::string> &rFileList);
+    void getFileListExtension(std::vector<std::string> &rFileList, const std::string &extension);
+    bool Exists(std::string &filename);
+    IOStream *OpenFile(std::string &filename);
+
+    static void SimplifyFilename(std::string &filename);
+
+private:
+    void MapArchive();
+
+private:
+    typedef std::map<std::string, ZipFileInfo> ZipFileInfoMap;
+
+    unzFile m_ZipFileHandle = nullptr;
+    ZipFileInfoMap m_ArchiveMap;
+};
+
+ZipArchiveIOSystem::Implement::Implement(IOSystem *pIOHandler, const char *pFilename, const char *pMode) {
+    ai_assert(strcmp(pMode, "r") == 0);
+    ai_assert(pFilename != nullptr);
+    if (pFilename[0] == 0 || nullptr == pMode) {
+        return;
+    }
+
+    zlib_filefunc_def mapping = IOSystem2Unzip::get(pIOHandler);
+    m_ZipFileHandle = unzOpen2(pFilename, &mapping);
+}
+
+ZipArchiveIOSystem::Implement::~Implement() {
+    if (m_ZipFileHandle != nullptr) {
+        unzClose(m_ZipFileHandle);
+    }
+}
+
+void ZipArchiveIOSystem::Implement::MapArchive() {
+    if (m_ZipFileHandle == nullptr)
+        return;
+
+    if (!m_ArchiveMap.empty())
+        return;
+
+    //  At first ensure file is already open
+    if (unzGoToFirstFile(m_ZipFileHandle) != UNZ_OK)
+        return;
+
+    // Loop over all files
+    do {
+        char filename[FileNameSize];
+        unz_file_info fileInfo;
+
+        if (unzGetCurrentFileInfo(m_ZipFileHandle, &fileInfo, filename, FileNameSize, nullptr, 0, nullptr, 0) == UNZ_OK) {
+            if (fileInfo.uncompressed_size != 0 && fileInfo.size_filename <= FileNameSize) {
+                std::string filename_string(filename, fileInfo.size_filename);
+                SimplifyFilename(filename_string);
+                m_ArchiveMap.emplace(filename_string, ZipFileInfo(m_ZipFileHandle, fileInfo.uncompressed_size));
+            }
+        }
+    } while (unzGoToNextFile(m_ZipFileHandle) != UNZ_END_OF_LIST_OF_FILE);
+}
+
+bool ZipArchiveIOSystem::Implement::isOpen() const {
+    return (m_ZipFileHandle != nullptr);
+}
+
+void ZipArchiveIOSystem::Implement::getFileList(std::vector<std::string> &rFileList) {
+    MapArchive();
+    rFileList.clear();
+
+    for (const auto &file : m_ArchiveMap) {
+        rFileList.push_back(file.first);
+    }
+}
+
+void ZipArchiveIOSystem::Implement::getFileListExtension(std::vector<std::string> &rFileList, const std::string &extension) {
+    MapArchive();
+    rFileList.clear();
+
+    for (const auto &file : m_ArchiveMap) {
+        if (extension == BaseImporter::GetExtension(file.first))
+            rFileList.push_back(file.first);
+    }
+}
+
+bool ZipArchiveIOSystem::Implement::Exists(std::string &filename) {
+    MapArchive();
+
+    ZipFileInfoMap::const_iterator it = m_ArchiveMap.find(filename);
+    return (it != m_ArchiveMap.end());
+}
+
+IOStream *ZipArchiveIOSystem::Implement::OpenFile(std::string &filename) {
+    MapArchive();
+
+    SimplifyFilename(filename);
+
+    // Find in the map
+    ZipFileInfoMap::const_iterator zip_it = m_ArchiveMap.find(filename);
+    if (zip_it == m_ArchiveMap.cend())
+        return nullptr;
+
+    const ZipFileInfo &zip_file = (*zip_it).second;
+    return zip_file.Extract(filename, m_ZipFileHandle);
+}
+
+inline void ReplaceAll(std::string &data, const std::string &before, const std::string &after) {
+    size_t pos = data.find(before);
+    while (pos != std::string::npos) {
+        data.replace(pos, before.size(), after);
+        pos = data.find(before, pos + after.size());
+    }
+}
+
+inline void ReplaceAllChar(std::string &data, const char before, const char after) {
+    size_t pos = data.find(before);
+    while (pos != std::string::npos) {
+        data[pos] = after;
+        pos = data.find(before, pos + 1);
+    }
+}
+
+void ZipArchiveIOSystem::Implement::SimplifyFilename(std::string &filename) {
+    ReplaceAllChar(filename, '\\', '/');
+
+    // Remove all . and / from the beginning of the path
+    size_t pos = filename.find_first_not_of("./");
+    if (pos != 0)
+        filename.erase(0, pos);
+
+    // Simplify "my/folder/../file.png" constructions, if any
+    static const std::string relative("/../");
+    const size_t relsize = relative.size() - 1;
+    pos = filename.find(relative);
+    while (pos != std::string::npos) {
+        // Previous slash
+        size_t prevpos = filename.rfind('/', pos - 1);
+        if (prevpos == pos)
+            filename.erase(0, pos + relative.size());
+        else
+            filename.erase(prevpos, pos + relsize - prevpos);
+
+        pos = filename.find(relative);
+    }
+}
+
+ZipArchiveIOSystem::ZipArchiveIOSystem(IOSystem *pIOHandler, const char *pFilename, const char *pMode) :
+        pImpl(new Implement(pIOHandler, pFilename, pMode)) {
+}
+
+// ----------------------------------------------------------------
+// The ZipArchiveIO
+ZipArchiveIOSystem::ZipArchiveIOSystem(IOSystem *pIOHandler, const std::string &rFilename, const char *pMode) :
+        pImpl(new Implement(pIOHandler, rFilename.c_str(), pMode)) {
+}
+
+ZipArchiveIOSystem::~ZipArchiveIOSystem() {
+    delete pImpl;
+}
+
+bool ZipArchiveIOSystem::Exists(const char *pFilename) const {
+    ai_assert(pFilename != nullptr);
+
+    if (pFilename == nullptr) {
+        return false;
+    }
+
+    std::string filename(pFilename);
+    return pImpl->Exists(filename);
+}
+
+// This is always '/' in a ZIP
+char ZipArchiveIOSystem::getOsSeparator() const {
+    return '/';
+}
+
+// Only supports Reading
+IOStream *ZipArchiveIOSystem::Open(const char *pFilename, const char *pMode) {
+    ai_assert(pFilename != nullptr);
+
+    for (size_t i = 0; pMode[i] != 0; ++i) {
+        ai_assert(pMode[i] != 'w');
+        if (pMode[i] == 'w')
+            return nullptr;
+    }
+
+    std::string filename(pFilename);
+    return pImpl->OpenFile(filename);
+}
+
+void ZipArchiveIOSystem::Close(IOStream *pFile) {
+    delete pFile;
+}
+
+bool ZipArchiveIOSystem::isOpen() const {
+    return (pImpl->isOpen());
+}
+
+void ZipArchiveIOSystem::getFileList(std::vector<std::string> &rFileList) const {
+    return pImpl->getFileList(rFileList);
+}
+
+void ZipArchiveIOSystem::getFileListExtension(std::vector<std::string> &rFileList, const std::string &extension) const {
+    return pImpl->getFileListExtension(rFileList, extension);
+}
+
+bool ZipArchiveIOSystem::isZipArchive(IOSystem *pIOHandler, const char *pFilename) {
+    Implement tmp(pIOHandler, pFilename, "r");
+    return tmp.isOpen();
+}
+
+bool ZipArchiveIOSystem::isZipArchive(IOSystem *pIOHandler, const std::string &rFilename) {
+    return isZipArchive(pIOHandler, rFilename.c_str());
+}
+
+} // namespace Assimp