/* --------------------------------------------------------------------------- Open Asset Import Library (assimp) --------------------------------------------------------------------------- Copyright (c) 2006-2020, 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 Default implementation of IOSystem using the standard C file functions */ #include #include #include #include #include #include #ifdef __unix__ #include #include #endif #ifdef _WIN32 #include #endif using namespace Assimp; #ifdef _WIN32 static std::wstring Utf8ToWide(const char* in) { int size = MultiByteToWideChar(CP_UTF8, 0, in, -1, nullptr, 0); // size includes terminating null; std::wstring adds null automatically std::wstring out(static_cast(size) - 1, L'\0'); MultiByteToWideChar(CP_UTF8, 0, in, -1, &out[0], size); return out; } static std::string WideToUtf8(const wchar_t* in) { int size = WideCharToMultiByte(CP_UTF8, 0, in, -1, nullptr, 0, nullptr, nullptr); // size includes terminating null; std::string adds null automatically std::string out(static_cast(size) - 1, '\0'); WideCharToMultiByte(CP_UTF8, 0, in, -1, &out[0], size, nullptr, nullptr); return out; } #endif // ------------------------------------------------------------------------------------------------ // Tests for the existence of a file at the given path. bool DefaultIOSystem::Exists(const char* pFile) const { #ifdef _WIN32 struct __stat64 filestat; if (_wstat64(Utf8ToWide(pFile).c_str(), &filestat) != 0) { return false; } #else FILE* file = ::fopen(pFile, "rb"); if (!file) return false; ::fclose(file); #endif return true; } // ------------------------------------------------------------------------------------------------ // Open a new file with a given path. IOStream* DefaultIOSystem::Open(const char* strFile, const char* strMode) { ai_assert(strFile != nullptr); ai_assert(strMode != nullptr); FILE* file; #ifdef _WIN32 file = ::_wfopen(Utf8ToWide(strFile).c_str(), Utf8ToWide(strMode).c_str()); #else file = ::fopen(strFile, strMode); #endif if (!file) return nullptr; return new DefaultIOStream(file, strFile); } // ------------------------------------------------------------------------------------------------ // Closes the given file and releases all resources associated with it. void DefaultIOSystem::Close(IOStream* pFile) { delete pFile; } // ------------------------------------------------------------------------------------------------ // Returns the operation specific directory separator char DefaultIOSystem::getOsSeparator() const { #ifndef _WIN32 return '/'; #else return '\\'; #endif } // ------------------------------------------------------------------------------------------------ // IOSystem default implementation (ComparePaths isn't a pure virtual function) bool IOSystem::ComparePaths(const char* one, const char* second) const { return !ASSIMP_stricmp(one, second); } // ------------------------------------------------------------------------------------------------ // Convert a relative path into an absolute path inline static std::string MakeAbsolutePath(const char* in) { ai_assert(in); std::string out; #ifdef _WIN32 wchar_t* ret = ::_wfullpath(nullptr, Utf8ToWide(in).c_str(), 0); if (ret) { out = WideToUtf8(ret); free(ret); } #else char* ret = realpath(in, nullptr); if (ret) { out = ret; free(ret); } #endif if (!ret) { // preserve the input path, maybe someone else is able to fix // the path before it is accessed (e.g. our file system filter) ASSIMP_LOG_WARN_F("Invalid path: ", std::string(in)); out = in; } return out; } // ------------------------------------------------------------------------------------------------ // DefaultIOSystem's more specialized implementation bool DefaultIOSystem::ComparePaths(const char* one, const char* second) const { // chances are quite good both paths are formatted identically, // so we can hopefully return here already if (!ASSIMP_stricmp(one, second)) return true; std::string temp1 = MakeAbsolutePath(one); std::string temp2 = MakeAbsolutePath(second); return !ASSIMP_stricmp(temp1, temp2); } // ------------------------------------------------------------------------------------------------ std::string DefaultIOSystem::fileName(const std::string& path) { std::string ret = path; std::size_t last = ret.find_last_of("\\/"); if (last != std::string::npos) ret = ret.substr(last + 1); return ret; } // ------------------------------------------------------------------------------------------------ std::string DefaultIOSystem::completeBaseName(const std::string& path) { std::string ret = fileName(path); std::size_t pos = ret.find_last_of('.'); if (pos != std::string::npos) ret = ret.substr(0, pos); return ret; } // ------------------------------------------------------------------------------------------------ std::string DefaultIOSystem::absolutePath(const std::string& path) { std::string ret = path; std::size_t last = ret.find_last_of("\\/"); if (last != std::string::npos) ret = ret.substr(0, last); return ret; } // ------------------------------------------------------------------------------------------------