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3 changed files with 225 additions and 225 deletions
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@ -13,196 +13,196 @@
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#if FILE_API == FILE_API_STDIO
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/*
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*
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* Implementation of LowLevelFile methods using c stdio
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* Implementation of LowLevelFile methods using c stdio
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*
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*/
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LowLevelFile::LowLevelFile ()
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{
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mHandle = NULL;
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mHandle = NULL;
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}
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LowLevelFile::~LowLevelFile ()
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{
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if (mHandle != NULL)
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fclose (mHandle);
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if (mHandle != NULL)
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fclose (mHandle);
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}
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void LowLevelFile::open (char const * filename)
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{
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assert (mHandle == NULL);
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assert (mHandle == NULL);
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mHandle = fopen (filename, "rb");
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mHandle = fopen (filename, "rb");
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if (mHandle == NULL)
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{
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std::ostringstream os;
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os << "Failed to open '" << filename << "' for reading.";
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throw std::runtime_error (os.str ());
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}
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if (mHandle == NULL)
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{
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std::ostringstream os;
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os << "Failed to open '" << filename << "' for reading.";
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throw std::runtime_error (os.str ());
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}
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}
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void LowLevelFile::close ()
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{
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assert (mHandle != NULL);
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assert (mHandle != NULL);
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fclose (mHandle);
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fclose (mHandle);
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mHandle = NULL;
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mHandle = NULL;
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}
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size_t LowLevelFile::size ()
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{
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assert (mHandle != NULL);
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assert (mHandle != NULL);
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long oldPosition = ftell (mHandle);
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long oldPosition = ftell (mHandle);
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if (oldPosition == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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if (oldPosition == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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if (fseek (mHandle, 0, SEEK_END) != 0)
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throw std::runtime_error ("A query operation on a file failed.");
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if (fseek (mHandle, 0, SEEK_END) != 0)
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throw std::runtime_error ("A query operation on a file failed.");
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long Size = ftell (mHandle);
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long Size = ftell (mHandle);
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if (Size == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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if (Size == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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if (fseek (mHandle, oldPosition, SEEK_SET) != 0)
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throw std::runtime_error ("A query operation on a file failed.");
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if (fseek (mHandle, oldPosition, SEEK_SET) != 0)
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throw std::runtime_error ("A query operation on a file failed.");
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return size_t (Size);
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return size_t (Size);
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}
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void LowLevelFile::seek (size_t Position)
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{
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assert (mHandle != NULL);
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assert (mHandle != NULL);
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if (fseek (mHandle, Position, SEEK_SET) != 0)
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throw std::runtime_error ("A seek operation on a file failed.");
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if (fseek (mHandle, Position, SEEK_SET) != 0)
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throw std::runtime_error ("A seek operation on a file failed.");
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}
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size_t LowLevelFile::tell ()
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{
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assert (mHandle != NULL);
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assert (mHandle != NULL);
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long Position = ftell (mHandle);
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long Position = ftell (mHandle);
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if (Position == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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if (Position == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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return size_t (Position);
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return size_t (Position);
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}
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size_t LowLevelFile::read (void * data, size_t size)
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{
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assert (mHandle != NULL);
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assert (mHandle != NULL);
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int amount = fread (data, 1, size, mHandle);
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int amount = fread (data, 1, size, mHandle);
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if (amount == 0 && ferror (mHandle))
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throw std::runtime_error ("A read operation on a file failed.");
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if (amount == 0 && ferror (mHandle))
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throw std::runtime_error ("A read operation on a file failed.");
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return amount;
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return amount;
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}
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#elif FILE_API == FILE_API_POSIX
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/*
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*
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* Implementation of LowLevelFile methods using posix IO calls
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* Implementation of LowLevelFile methods using posix IO calls
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*
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*/
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LowLevelFile::LowLevelFile ()
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{
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mHandle = -1;
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mHandle = -1;
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}
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LowLevelFile::~LowLevelFile ()
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{
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if (mHandle != -1)
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::close (mHandle);
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if (mHandle != -1)
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::close (mHandle);
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}
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void LowLevelFile::open (char const * filename)
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{
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assert (mHandle == -1);
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assert (mHandle == -1);
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#ifdef O_BINARY
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static const int openFlags = O_RDONLY | O_BINARY;
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static const int openFlags = O_RDONLY | O_BINARY;
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#else
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static const int openFlags = O_RDONLY;
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static const int openFlags = O_RDONLY;
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#endif
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mHandle = ::open (filename, openFlags, 0);
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mHandle = ::open (filename, openFlags, 0);
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if (mHandle == -1)
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{
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std::ostringstream os;
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os << "Failed to open '" << filename << "' for reading.";
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throw std::runtime_error (os.str ());
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}
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if (mHandle == -1)
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{
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std::ostringstream os;
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os << "Failed to open '" << filename << "' for reading.";
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throw std::runtime_error (os.str ());
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}
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}
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void LowLevelFile::close ()
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{
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assert (mHandle != -1);
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assert (mHandle != -1);
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::close (mHandle);
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::close (mHandle);
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mHandle = -1;
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mHandle = -1;
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}
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size_t LowLevelFile::size ()
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{
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assert (mHandle != -1);
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assert (mHandle != -1);
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size_t oldPosition = ::lseek (mHandle, 0, SEEK_CUR);
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size_t oldPosition = ::lseek (mHandle, 0, SEEK_CUR);
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if (oldPosition == size_t (-1))
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throw std::runtime_error ("A query operation on a file failed.");
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if (oldPosition == size_t (-1))
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throw std::runtime_error ("A query operation on a file failed.");
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size_t Size = ::lseek (mHandle, 0, SEEK_END);
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size_t Size = ::lseek (mHandle, 0, SEEK_END);
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if (Size == size_t (-1))
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throw std::runtime_error ("A query operation on a file failed.");
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if (Size == size_t (-1))
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throw std::runtime_error ("A query operation on a file failed.");
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if (lseek (mHandle, oldPosition, SEEK_SET) == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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if (lseek (mHandle, oldPosition, SEEK_SET) == -1)
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throw std::runtime_error ("A query operation on a file failed.");
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return Size;
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return Size;
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}
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void LowLevelFile::seek (size_t Position)
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{
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assert (mHandle != -1);
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assert (mHandle != -1);
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if (::lseek (mHandle, Position, SEEK_SET) == -1)
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throw std::runtime_error ("A seek operation on a file failed.");
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if (::lseek (mHandle, Position, SEEK_SET) == -1)
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throw std::runtime_error ("A seek operation on a file failed.");
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}
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size_t LowLevelFile::tell ()
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{
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assert (mHandle != -1);
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assert (mHandle != -1);
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size_t Position = ::lseek (mHandle, 0, SEEK_CUR);
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size_t Position = ::lseek (mHandle, 0, SEEK_CUR);
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if (Position == size_t (-1))
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throw std::runtime_error ("A query operation on a file failed.");
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if (Position == size_t (-1))
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throw std::runtime_error ("A query operation on a file failed.");
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return Position;
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return Position;
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}
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size_t LowLevelFile::read (void * data, size_t size)
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{
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assert (mHandle != -1);
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assert (mHandle != -1);
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int amount = ::read (mHandle, data, size);
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int amount = ::read (mHandle, data, size);
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if (amount == -1)
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throw std::runtime_error ("A read operation on a file failed.");
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if (amount == -1)
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throw std::runtime_error ("A read operation on a file failed.");
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return amount;
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return amount;
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}
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#elif FILE_API == FILE_API_WIN32
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@ -210,93 +210,93 @@ size_t LowLevelFile::read (void * data, size_t size)
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#include <boost/locale.hpp>
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/*
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*
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* Implementation of LowLevelFile methods using Win32 API calls
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* Implementation of LowLevelFile methods using Win32 API calls
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*
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*/
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LowLevelFile::LowLevelFile ()
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{
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mHandle = INVALID_HANDLE_VALUE;
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mHandle = INVALID_HANDLE_VALUE;
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}
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LowLevelFile::~LowLevelFile ()
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{
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if (mHandle != INVALID_HANDLE_VALUE)
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CloseHandle (mHandle);
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if (mHandle != INVALID_HANDLE_VALUE)
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CloseHandle (mHandle);
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}
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void LowLevelFile::open (char const * filename)
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{
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assert (mHandle == INVALID_HANDLE_VALUE);
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assert (mHandle == INVALID_HANDLE_VALUE);
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std::wstring wname = boost::locale::conv::utf_to_utf<wchar_t>(filename);
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HANDLE handle = CreateFileW (wname.c_str(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
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std::wstring wname = boost::locale::conv::utf_to_utf<wchar_t>(filename);
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HANDLE handle = CreateFileW (wname.c_str(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
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if (handle == INVALID_HANDLE_VALUE)
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{
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std::ostringstream os;
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os << "Failed to open '" << filename << "' for reading.";
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throw std::runtime_error (os.str ());
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}
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if (handle == INVALID_HANDLE_VALUE)
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{
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std::ostringstream os;
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os << "Failed to open '" << filename << "' for reading.";
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throw std::runtime_error (os.str ());
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}
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mHandle = handle;
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mHandle = handle;
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}
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void LowLevelFile::close ()
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{
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assert (mHandle != INVALID_HANDLE_VALUE);
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assert (mHandle != INVALID_HANDLE_VALUE);
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CloseHandle (mHandle);
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CloseHandle (mHandle);
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mHandle = INVALID_HANDLE_VALUE;
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mHandle = INVALID_HANDLE_VALUE;
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}
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size_t LowLevelFile::size ()
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{
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assert (mHandle != INVALID_HANDLE_VALUE);
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assert (mHandle != INVALID_HANDLE_VALUE);
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BY_HANDLE_FILE_INFORMATION info;
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BY_HANDLE_FILE_INFORMATION info;
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if (!GetFileInformationByHandle (mHandle, &info))
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throw std::runtime_error ("A query operation on a file failed.");
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if (!GetFileInformationByHandle (mHandle, &info))
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throw std::runtime_error ("A query operation on a file failed.");
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if (info.nFileSizeHigh != 0)
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throw std::runtime_error ("Files greater that 4GB are not supported.");
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if (info.nFileSizeHigh != 0)
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throw std::runtime_error ("Files greater that 4GB are not supported.");
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return info.nFileSizeLow;
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return info.nFileSizeLow;
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}
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void LowLevelFile::seek (size_t Position)
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{
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assert (mHandle != INVALID_HANDLE_VALUE);
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assert (mHandle != INVALID_HANDLE_VALUE);
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if (SetFilePointer (mHandle, Position, NULL, SEEK_SET) == INVALID_SET_FILE_POINTER)
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if (GetLastError () != NO_ERROR)
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throw std::runtime_error ("A seek operation on a file failed.");
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if (SetFilePointer (mHandle, Position, NULL, SEEK_SET) == INVALID_SET_FILE_POINTER)
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if (GetLastError () != NO_ERROR)
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throw std::runtime_error ("A seek operation on a file failed.");
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}
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size_t LowLevelFile::tell ()
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{
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assert (mHandle != INVALID_HANDLE_VALUE);
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assert (mHandle != INVALID_HANDLE_VALUE);
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DWORD value = SetFilePointer (mHandle, 0, NULL, SEEK_CUR);
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DWORD value = SetFilePointer (mHandle, 0, NULL, SEEK_CUR);
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if (value == INVALID_SET_FILE_POINTER && GetLastError () != NO_ERROR)
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throw std::runtime_error ("A query operation on a file failed.");
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if (value == INVALID_SET_FILE_POINTER && GetLastError () != NO_ERROR)
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throw std::runtime_error ("A query operation on a file failed.");
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return value;
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return value;
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}
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size_t LowLevelFile::read (void * data, size_t size)
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{
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assert (mHandle != INVALID_HANDLE_VALUE);
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assert (mHandle != INVALID_HANDLE_VALUE);
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DWORD read;
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DWORD read;
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if (!ReadFile (mHandle, data, size, &read, NULL))
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throw std::runtime_error ("A read operation on a file failed.");
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if (!ReadFile (mHandle, data, size, &read, NULL))
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throw std::runtime_error ("A read operation on a file failed.");
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return read;
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return read;
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}
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#endif
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