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FileStrm.cpp
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138 lines (100 loc) · 2.98 KB
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/*
Copyright (C) 1998-2007 Emil Maskovsky
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
@file
File streams (implementation).
@author Emil Maskovsky
*/
/* Framework libraries. */
/* Application specific. */
#include "mx/FileStrm.hpp"
// #include <errno.h> // errno variable
// Start the exception implementation.
MX_IMPLEMENT_EXCEPTION_CLASS(mx::EndOfFile);
// Start the exception implementation.
MX_IMPLEMENT_EXCEPTION_CLASS(mx::GenericIOException);
/* static */ const mx::FileStream::FileDescriptor
mx::FileStream::INVALID_DESCRIPTOR = NULL;
/**
Constructor taking file descriptor.
@param [in] hFileDescriptor @copydoc m_hFileDescriptor.
*/
mx::FileStream::FileStream(
const FileDescriptor hFileDescriptor)
: m_hFileDescriptor(hFileDescriptor)
{}
/**
Destructor.
*/
mx::FileStream::~FileStream()
{
if (IsOpen())
{
Close();
}
}
/* MX_OVERRIDDEN */ bool mx::FileStream::IsOpen(void) const
{
return m_hFileDescriptor != INVALID_DESCRIPTOR;
}
/* MX_OVERRIDDEN */ void mx::FileStream::Flush(void)
{
mxAssert(IsOpen());
if (EOF == fflush(m_hFileDescriptor))
{
// We cannot reach eof during write (check it).
mxAssert(!feof(m_hFileDescriptor));
// File I/O error other than EOF.
mxThrow(GenericIOException(ferror(m_hFileDescriptor)));
}
}
/* MX_OVERRIDDEN */ void mx::FileStream::Close(void)
{
mxAssert(IsOpen());
if (EOF == fclose(m_hFileDescriptor))
{
// We cannot reach eof during write (check it).
mxAssert(!feof(m_hFileDescriptor));
// File I/O error other than EOF.
mxThrow(GenericIOException(ferror(m_hFileDescriptor)));
}
m_hFileDescriptor = INVALID_DESCRIPTOR;
}
/* MX_OVERRIDDEN */ mx::Size mx::FileStream::PrintfV(
const Char * const sFormat, va_list pArguments)
{
mxAssert(IsOpen());
mxAssert(sFormat != NULL);
int iCharsWritten;
if ((iCharsWritten =
#ifndef MXCPP_UNICODE
::vfprintf
#else
::vfwprintf
#endif
(m_hFileDescriptor, sFormat, pArguments))
< 0)
{
// We cannot reach eof during write (check it).
mxAssert(!feof(m_hFileDescriptor));
// File I/O error other than EOF.
mxThrow(GenericIOException(ferror(m_hFileDescriptor)));
}
return iCharsWritten;
}
// Define inline methods here if inlining is disabled.
#ifndef MX_INLINE_ENABLED
#include "mx/FileStrm.inl"
#endif
/* EOF */