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annotate libs/assimp/DefaultIOSystem.cpp @ 3:c179c72369be

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author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 03 Feb 2014 08:52:13 +0200
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nuclear@0 1 /*
nuclear@0 2 ---------------------------------------------------------------------------
nuclear@0 3 Open Asset Import Library (assimp)
nuclear@0 4 ---------------------------------------------------------------------------
nuclear@0 5
nuclear@0 6 Copyright (c) 2006-2012, assimp team
nuclear@0 7
nuclear@0 8 All rights reserved.
nuclear@0 9
nuclear@0 10 Redistribution and use of this software in source and binary forms,
nuclear@0 11 with or without modification, are permitted provided that the following
nuclear@0 12 conditions are met:
nuclear@0 13
nuclear@0 14 * Redistributions of source code must retain the above
nuclear@0 15 copyright notice, this list of conditions and the
nuclear@0 16 following disclaimer.
nuclear@0 17
nuclear@0 18 * Redistributions in binary form must reproduce the above
nuclear@0 19 copyright notice, this list of conditions and the
nuclear@0 20 following disclaimer in the documentation and/or other
nuclear@0 21 materials provided with the distribution.
nuclear@0 22
nuclear@0 23 * Neither the name of the assimp team, nor the names of its
nuclear@0 24 contributors may be used to endorse or promote products
nuclear@0 25 derived from this software without specific prior
nuclear@0 26 written permission of the assimp team.
nuclear@0 27
nuclear@0 28 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
nuclear@0 29 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
nuclear@0 30 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0 31 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
nuclear@0 32 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0 33 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
nuclear@0 34 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0 35 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
nuclear@0 36 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
nuclear@0 37 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
nuclear@0 38 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0 39 ---------------------------------------------------------------------------
nuclear@0 40 */
nuclear@0 41 /** @file Default implementation of IOSystem using the standard C file functions */
nuclear@0 42
nuclear@0 43 #include "AssimpPCH.h"
nuclear@0 44
nuclear@0 45 #include <stdlib.h>
nuclear@0 46 #include "DefaultIOSystem.h"
nuclear@0 47 #include "DefaultIOStream.h"
nuclear@0 48
nuclear@0 49 #ifdef __unix__
nuclear@0 50 #include <sys/param.h>
nuclear@0 51 #include <stdlib.h>
nuclear@0 52 #endif
nuclear@0 53
nuclear@0 54 using namespace Assimp;
nuclear@0 55
nuclear@0 56 // ------------------------------------------------------------------------------------------------
nuclear@0 57 // Constructor.
nuclear@0 58 DefaultIOSystem::DefaultIOSystem()
nuclear@0 59 {
nuclear@0 60 // nothing to do here
nuclear@0 61 }
nuclear@0 62
nuclear@0 63 // ------------------------------------------------------------------------------------------------
nuclear@0 64 // Destructor.
nuclear@0 65 DefaultIOSystem::~DefaultIOSystem()
nuclear@0 66 {
nuclear@0 67 // nothing to do here
nuclear@0 68 }
nuclear@0 69
nuclear@0 70 // ------------------------------------------------------------------------------------------------
nuclear@0 71 // Tests for the existence of a file at the given path.
nuclear@0 72 bool DefaultIOSystem::Exists( const char* pFile) const
nuclear@0 73 {
nuclear@0 74 FILE* file = ::fopen( pFile, "rb");
nuclear@0 75 if( !file)
nuclear@0 76 return false;
nuclear@0 77
nuclear@0 78 ::fclose( file);
nuclear@0 79 return true;
nuclear@0 80 }
nuclear@0 81
nuclear@0 82 // ------------------------------------------------------------------------------------------------
nuclear@0 83 // Open a new file with a given path.
nuclear@0 84 IOStream* DefaultIOSystem::Open( const char* strFile, const char* strMode)
nuclear@0 85 {
nuclear@0 86 ai_assert(NULL != strFile);
nuclear@0 87 ai_assert(NULL != strMode);
nuclear@0 88
nuclear@0 89 FILE* file = ::fopen( strFile, strMode);
nuclear@0 90 if( NULL == file)
nuclear@0 91 return NULL;
nuclear@0 92
nuclear@0 93 return new DefaultIOStream(file, (std::string) strFile);
nuclear@0 94 }
nuclear@0 95
nuclear@0 96 // ------------------------------------------------------------------------------------------------
nuclear@0 97 // Closes the given file and releases all resources associated with it.
nuclear@0 98 void DefaultIOSystem::Close( IOStream* pFile)
nuclear@0 99 {
nuclear@0 100 delete pFile;
nuclear@0 101 }
nuclear@0 102
nuclear@0 103 // ------------------------------------------------------------------------------------------------
nuclear@0 104 // Returns the operation specific directory separator
nuclear@0 105 char DefaultIOSystem::getOsSeparator() const
nuclear@0 106 {
nuclear@0 107 #ifndef _WIN32
nuclear@0 108 return '/';
nuclear@0 109 #else
nuclear@0 110 return '\\';
nuclear@0 111 #endif
nuclear@0 112 }
nuclear@0 113
nuclear@0 114 // ------------------------------------------------------------------------------------------------
nuclear@0 115 // IOSystem default implementation (ComparePaths isn't a pure virtual function)
nuclear@0 116 bool IOSystem::ComparePaths (const char* one, const char* second) const
nuclear@0 117 {
nuclear@0 118 return !ASSIMP_stricmp(one,second);
nuclear@0 119 }
nuclear@0 120
nuclear@0 121 // maximum path length
nuclear@0 122 // XXX http://insanecoding.blogspot.com/2007/11/pathmax-simply-isnt.html
nuclear@0 123 #ifdef PATH_MAX
nuclear@0 124 # define PATHLIMIT PATH_MAX
nuclear@0 125 #else
nuclear@0 126 # define PATHLIMIT 4096
nuclear@0 127 #endif
nuclear@0 128
nuclear@0 129 // ------------------------------------------------------------------------------------------------
nuclear@0 130 // Convert a relative path into an absolute path
nuclear@0 131 inline void MakeAbsolutePath (const char* in, char* _out)
nuclear@0 132 {
nuclear@0 133 ai_assert(in && _out);
nuclear@0 134 char* ret;
nuclear@0 135 #ifdef _WIN32
nuclear@0 136 ret = ::_fullpath(_out, in,PATHLIMIT);
nuclear@0 137 #else
nuclear@0 138 // use realpath
nuclear@0 139 ret = realpath(in, _out);
nuclear@0 140 #endif
nuclear@0 141 if(!ret) {
nuclear@0 142 // preserve the input path, maybe someone else is able to fix
nuclear@0 143 // the path before it is accessed (e.g. our file system filter)
nuclear@0 144 DefaultLogger::get()->warn("Invalid path: "+std::string(in));
nuclear@0 145 strcpy(_out,in);
nuclear@0 146 }
nuclear@0 147 }
nuclear@0 148
nuclear@0 149 // ------------------------------------------------------------------------------------------------
nuclear@0 150 // DefaultIOSystem's more specialized implementation
nuclear@0 151 bool DefaultIOSystem::ComparePaths (const char* one, const char* second) const
nuclear@0 152 {
nuclear@0 153 // chances are quite good both paths are formatted identically,
nuclear@0 154 // so we can hopefully return here already
nuclear@0 155 if( !ASSIMP_stricmp(one,second) )
nuclear@0 156 return true;
nuclear@0 157
nuclear@0 158 char temp1[PATHLIMIT];
nuclear@0 159 char temp2[PATHLIMIT];
nuclear@0 160
nuclear@0 161 MakeAbsolutePath (one, temp1);
nuclear@0 162 MakeAbsolutePath (second, temp2);
nuclear@0 163
nuclear@0 164 return !ASSIMP_stricmp(temp1,temp2);
nuclear@0 165 }
nuclear@0 166
nuclear@0 167 #undef PATHLIMIT