257 lines
8.3 KiB
C++
257 lines
8.3 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2019, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/** @file Default implementation of IOSystem using the standard C file functions */
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#include <assimp/StringComparison.h>
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#include <assimp/DefaultIOSystem.h>
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#include <assimp/DefaultIOStream.h>
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#include <assimp/DefaultLogger.hpp>
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#include <assimp/ai_assert.h>
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#include <stdlib.h>
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#ifdef __unix__
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#include <sys/param.h>
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#include <stdlib.h>
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#endif
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using namespace Assimp;
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// maximum path length
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// XXX http://insanecoding.blogspot.com/2007/11/pathmax-simply-isnt.html
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#ifdef PATH_MAX
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# define PATHLIMIT PATH_MAX
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#else
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# define PATHLIMIT 4096
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#endif
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// ------------------------------------------------------------------------------------------------
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// Tests for the existence of a file at the given path.
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bool DefaultIOSystem::Exists( const char* pFile) const
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{
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#ifdef _WIN32
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wchar_t fileName16[PATHLIMIT];
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#ifndef WindowsStore
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bool isUnicode = IsTextUnicode(pFile, static_cast<int>(strlen(pFile)), NULL) != 0;
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if (isUnicode) {
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MultiByteToWideChar(CP_UTF8, MB_PRECOMPOSED, pFile, -1, fileName16, PATHLIMIT);
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struct __stat64 filestat;
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if (0 != _wstat64(fileName16, &filestat)) {
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return false;
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}
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} else {
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#endif
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FILE* file = ::fopen(pFile, "rb");
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if (!file)
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return false;
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::fclose(file);
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#ifndef WindowsStore
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}
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#endif
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#else
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FILE* file = ::fopen( pFile, "rb");
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if( !file)
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return false;
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::fclose( file);
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#endif
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return true;
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}
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// ------------------------------------------------------------------------------------------------
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// Open a new file with a given path.
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IOStream* DefaultIOSystem::Open( const char* strFile, const char* strMode)
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{
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ai_assert(NULL != strFile);
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ai_assert(NULL != strMode);
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FILE* file;
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#ifdef _WIN32
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wchar_t fileName16[PATHLIMIT];
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#ifndef WindowsStore
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bool isUnicode = IsTextUnicode(strFile, static_cast<int>(strlen(strFile)), NULL) != 0;
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if (isUnicode) {
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MultiByteToWideChar(CP_UTF8, MB_PRECOMPOSED, strFile, -1, fileName16, PATHLIMIT);
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std::string mode8(strMode);
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file = ::_wfopen(fileName16, std::wstring(mode8.begin(), mode8.end()).c_str());
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} else {
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#endif
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file = ::fopen(strFile, strMode);
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#ifndef WindowsStore
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}
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#endif
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#else
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file = ::fopen(strFile, strMode);
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#endif
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if (nullptr == file)
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return nullptr;
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return new DefaultIOStream(file, (std::string) strFile);
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}
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// ------------------------------------------------------------------------------------------------
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// Closes the given file and releases all resources associated with it.
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void DefaultIOSystem::Close( IOStream* pFile)
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{
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delete pFile;
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}
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// ------------------------------------------------------------------------------------------------
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// Returns the operation specific directory separator
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char DefaultIOSystem::getOsSeparator() const
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{
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#ifndef _WIN32
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return '/';
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#else
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return '\\';
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#endif
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}
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// ------------------------------------------------------------------------------------------------
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// IOSystem default implementation (ComparePaths isn't a pure virtual function)
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bool IOSystem::ComparePaths (const char* one, const char* second) const
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{
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return !ASSIMP_stricmp(one,second);
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}
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// ------------------------------------------------------------------------------------------------
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// Convert a relative path into an absolute path
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inline static void MakeAbsolutePath (const char* in, char* _out)
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{
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ai_assert(in && _out);
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#if defined( _MSC_VER ) || defined( __MINGW32__ )
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#ifndef WindowsStore
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bool isUnicode = IsTextUnicode(in, static_cast<int>(strlen(in)), NULL) != 0;
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if (isUnicode) {
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wchar_t out16[PATHLIMIT];
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wchar_t in16[PATHLIMIT];
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MultiByteToWideChar(CP_UTF8, MB_PRECOMPOSED, in, -1, out16, PATHLIMIT);
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wchar_t* ret = ::_wfullpath(out16, in16, PATHLIMIT);
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if (ret) {
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WideCharToMultiByte(CP_UTF8, MB_PRECOMPOSED, out16, -1, _out, PATHLIMIT, nullptr, nullptr);
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}
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if (!ret) {
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// preserve the input path, maybe someone else is able to fix
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// the path before it is accessed (e.g. our file system filter)
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ASSIMP_LOG_WARN_F("Invalid path: ", std::string(in));
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strcpy(_out, in);
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}
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} else {
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#endif
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char* ret = :: _fullpath(_out, in, PATHLIMIT);
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if (!ret) {
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// preserve the input path, maybe someone else is able to fix
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// the path before it is accessed (e.g. our file system filter)
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ASSIMP_LOG_WARN_F("Invalid path: ", std::string(in));
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strcpy(_out, in);
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}
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#ifndef WindowsStore
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}
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#endif
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#else
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// use realpath
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char* ret = realpath(in, _out);
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if(!ret) {
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// preserve the input path, maybe someone else is able to fix
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// the path before it is accessed (e.g. our file system filter)
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ASSIMP_LOG_WARN_F("Invalid path: ", std::string(in));
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strcpy(_out,in);
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}
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#endif
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}
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// ------------------------------------------------------------------------------------------------
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// DefaultIOSystem's more specialized implementation
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bool DefaultIOSystem::ComparePaths (const char* one, const char* second) const
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{
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// chances are quite good both paths are formatted identically,
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// so we can hopefully return here already
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if( !ASSIMP_stricmp(one,second) )
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return true;
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char temp1[PATHLIMIT];
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char temp2[PATHLIMIT];
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MakeAbsolutePath (one, temp1);
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MakeAbsolutePath (second, temp2);
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return !ASSIMP_stricmp(temp1,temp2);
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}
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// ------------------------------------------------------------------------------------------------
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std::string DefaultIOSystem::fileName( const std::string &path )
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{
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std::string ret = path;
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std::size_t last = ret.find_last_of("\\/");
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if (last != std::string::npos) ret = ret.substr(last + 1);
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return ret;
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}
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// ------------------------------------------------------------------------------------------------
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std::string DefaultIOSystem::completeBaseName( const std::string &path )
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{
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std::string ret = fileName(path);
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std::size_t pos = ret.find_last_of('.');
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if(pos != ret.npos) ret = ret.substr(0, pos);
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return ret;
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}
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// ------------------------------------------------------------------------------------------------
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std::string DefaultIOSystem::absolutePath( const std::string &path )
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{
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std::string ret = path;
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std::size_t last = ret.find_last_of("\\/");
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if (last != std::string::npos) ret = ret.substr(0, last);
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return ret;
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}
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// ------------------------------------------------------------------------------------------------
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#undef PATHLIMIT
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