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authorsanine <sanine.not@pm.me>2022-03-04 10:47:15 -0600
committersanine <sanine.not@pm.me>2022-03-04 10:47:15 -0600
commit058f98a63658dc1a2579826ba167fd61bed1e21f (patch)
treebcba07a1615a14d943f3af3f815a42f3be86b2f3 /src/mesh/assimp-master/code/Common/DefaultIOStream.cpp
parent2f8028ac9e0812cb6f3cbb08f0f419e4e717bd22 (diff)
add assimp submodule
Diffstat (limited to 'src/mesh/assimp-master/code/Common/DefaultIOStream.cpp')
-rw-r--r--src/mesh/assimp-master/code/Common/DefaultIOStream.cpp180
1 files changed, 180 insertions, 0 deletions
diff --git a/src/mesh/assimp-master/code/Common/DefaultIOStream.cpp b/src/mesh/assimp-master/code/Common/DefaultIOStream.cpp
new file mode 100644
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--- /dev/null
+++ b/src/mesh/assimp-master/code/Common/DefaultIOStream.cpp
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+/*
+---------------------------------------------------------------------------
+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 DefaultIOStream.cpp
+ * @brief Default File I/O implementation for #Importer
+ */
+
+#include <assimp/DefaultIOStream.h>
+#include <assimp/ai_assert.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+using namespace Assimp;
+
+namespace {
+
+template <size_t sizeOfPointer>
+inline size_t select_ftell(FILE *file) {
+ return ::ftell(file);
+}
+
+template <size_t sizeOfPointer>
+inline int select_fseek(FILE *file, int64_t offset, int origin) {
+ return ::fseek(file, static_cast<long>(offset), origin);
+}
+
+
+
+#if defined _WIN32 && (!defined __GNUC__ || __MSVCRT_VERSION__ >= 0x0601)
+template <>
+inline size_t select_ftell<8>(FILE *file) {
+ return (size_t)::_ftelli64(file);
+}
+
+template <>
+inline int select_fseek<8>(FILE *file, int64_t offset, int origin) {
+ return ::_fseeki64(file, offset, origin);
+}
+
+#endif // #if defined _WIN32 && (!defined __GNUC__ || __MSVCRT_VERSION__ >= 0x0601)
+
+} // namespace
+
+// ----------------------------------------------------------------------------------
+DefaultIOStream::~DefaultIOStream() {
+ if (mFile) {
+ ::fclose(mFile);
+ }
+}
+
+// ----------------------------------------------------------------------------------
+size_t DefaultIOStream::Read(void *pvBuffer,
+ size_t pSize,
+ size_t pCount) {
+ if (0 == pCount) {
+ return 0;
+ }
+ ai_assert(nullptr != pvBuffer);
+ ai_assert(0 != pSize);
+
+ return (mFile ? ::fread(pvBuffer, pSize, pCount, mFile) : 0);
+}
+
+// ----------------------------------------------------------------------------------
+size_t DefaultIOStream::Write(const void *pvBuffer,
+ size_t pSize,
+ size_t pCount) {
+ ai_assert(nullptr != pvBuffer);
+ ai_assert(0 != pSize);
+
+ return (mFile ? ::fwrite(pvBuffer, pSize, pCount, mFile) : 0);
+}
+
+// ----------------------------------------------------------------------------------
+aiReturn DefaultIOStream::Seek(size_t pOffset,
+ aiOrigin pOrigin) {
+ if (!mFile) {
+ return AI_FAILURE;
+ }
+
+ // Just to check whether our enum maps one to one with the CRT constants
+ static_assert(aiOrigin_CUR == SEEK_CUR &&
+ aiOrigin_END == SEEK_END && aiOrigin_SET == SEEK_SET,
+ "aiOrigin_CUR == SEEK_CUR && \
+ aiOrigin_END == SEEK_END && aiOrigin_SET == SEEK_SET");
+
+ // do the seek
+ return (0 == select_fseek<sizeof(void *)>(mFile, (int64_t)pOffset, (int)pOrigin) ? AI_SUCCESS : AI_FAILURE);
+}
+
+// ----------------------------------------------------------------------------------
+size_t DefaultIOStream::Tell() const {
+ if (!mFile) {
+ return 0;
+ }
+ return select_ftell<sizeof(void *)>(mFile);
+}
+
+// ----------------------------------------------------------------------------------
+size_t DefaultIOStream::FileSize() const {
+ if (!mFile || mFilename.empty()) {
+ return 0;
+ }
+
+ if (SIZE_MAX == mCachedSize) {
+
+ // Although fseek/ftell would allow us to reuse the existing file handle here,
+ // it is generally unsafe because:
+ // - For binary streams, it is not technically well-defined
+ // - For text files the results are meaningless
+ // That's why we use the safer variant fstat here.
+ //
+ // See here for details:
+ // https://www.securecoding.cert.org/confluence/display/seccode/FIO19-C.+Do+not+use+fseek()+and+ftell()+to+compute+the+size+of+a+regular+file
+#if defined _WIN32 && (!defined __GNUC__ || __MSVCRT_VERSION__ >= 0x0601)
+ struct __stat64 fileStat;
+ //using fileno + fstat avoids having to handle the filename
+ int err = _fstat64(_fileno(mFile), &fileStat);
+ if (0 != err)
+ return 0;
+ mCachedSize = (size_t)(fileStat.st_size);
+#elif defined __GNUC__ || defined __APPLE__ || defined __MACH__ || defined __FreeBSD__
+ struct stat fileStat;
+ int err = stat(mFilename.c_str(), &fileStat);
+ if (0 != err)
+ return 0;
+ const unsigned long long cachedSize = fileStat.st_size;
+ mCachedSize = static_cast<size_t>(cachedSize);
+#else
+#error "Unknown platform"
+#endif
+ }
+ return mCachedSize;
+}
+
+// ----------------------------------------------------------------------------------
+void DefaultIOStream::Flush() {
+ if (mFile) {
+ ::fflush(mFile);
+ }
+}
+
+// ----------------------------------------------------------------------------------