1 #ifndef DALI_INTERNAL_PLATFORM_FILECLOSER_H
2 #define DALI_INTERNAL_PLATFORM_FILECLOSER_H
4 * Copyright (c) 2019 Samsung Electronics Co., Ltd.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
21 #include <dali/devel-api/adaptor-framework/file-loader.h>
34 * Opens files and closes them later even if an exception is thrown.
38 protected: // prevent this class being directly instantiated
41 * @brief Construct a FileCloser guarding a new FILE* for accessing the path passed in.
43 FileCloser( const char* const filename, const char* const mode )
45 DALI_ASSERT_DEBUG( filename != 0 && "Can't open a null filename." );
46 DALI_ASSERT_DEBUG( mode != 0 && "Null mode is undefined behaviour in spec." );
48 Dali::FileLoader::FileType fileType = Dali::FileLoader::FileType::TEXT;
50 const char* modeStr = mode;
58 fileType = FileLoader::FileType::BINARY;
60 // Still has to use fopen for append and write modes
64 mFile = fopen( filename, mode );
73 std::streampos bufferSize = 0;
74 if( !Dali::FileLoader::ReadFile( filename, bufferSize, mFileBuffer, fileType ) )
80 mFile = fmemopen( &mFileBuffer[0], bufferSize, mode );
85 * @brief Construct a FileCloser guarding a FILE* for reading out of the memory buffer passed in.
87 FileCloser( uint8_t* buffer, size_t dataSize, const char* const mode )
88 : mFile( fmemopen( buffer, dataSize, mode) )
92 FileCloser( Dali::Vector<uint8_t>& vector, size_t dataSize, const char * const mode )
94 // Resize the buffer to ensure any null that gets written by
95 // fmemopen is written past the end of any data that is written to the buffer.
96 // (Workaround for a bug in Ubuntu that overwrites null to the last byte of the
97 // data block regardless of whether binary mode was specified. Tizen doesn't write
98 // null if binary mode is specified).
99 size_t bufferSize = dataSize;
101 vector.Resize( bufferSize );
103 void * const buffer = &vector[0];
104 mFile = fmemopen( buffer, bufferSize, mode );
106 DALI_ASSERT_DEBUG( buffer != 0 && "Cant open file on null buffer." );
107 DALI_ASSERT_DEBUG( dataSize > 0 && "Pointless to open file on empty buffer." );
108 DALI_ASSERT_DEBUG( mode != 0 && "Null mode is undefined behaviour in spec." );
112 DALI_LOG_WARNING( "File open failed for memory buffer at location: \"%p\", of size: \"%u\", in mode: \"%s\".\n", static_cast<void*>(buffer), static_cast<unsigned>(dataSize), mode );
117 * @brief Destroy the FileCloser and clean up its FILE*.
123 const int closeFailed = fclose( mFile );
127 DALI_LOG_WARNING( "File close failed for FILE: \"%p\".\n", static_cast<void*>(mFile) );
135 * @return The FILE* guarded by this object.
145 FileCloser( const FileCloser& fileCloser );
148 FileCloser& operator=( const FileCloser& fileCloser );
152 Dali::Vector<char> mFileBuffer;
155 } // namespace Platform
157 } // namespace Internal
161 #endif // DALI_INTERNAL_PLATFORM_FILECLOSER_H