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93 lines
1.6 KiB
93 lines
1.6 KiB
4 months ago
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// Common/C_FileIO.cpp
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#include "C_FileIO.h"
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#include <fcntl.h>
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#ifdef _WIN32
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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namespace NC {
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namespace NFile {
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namespace NIO {
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bool CFileBase::OpenBinary(const char *name, int flags)
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{
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#ifdef O_BINARY
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flags |= O_BINARY;
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#endif
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Close();
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_handle = ::open(name, flags, 0666);
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return _handle != -1;
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}
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bool CFileBase::Close()
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{
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if (_handle == -1)
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return true;
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if (close(_handle) != 0)
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return false;
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_handle = -1;
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return true;
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}
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bool CFileBase::GetLength(UInt64 &length) const
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{
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off_t curPos = Seek(0, SEEK_CUR);
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off_t lengthTemp = Seek(0, SEEK_END);
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Seek(curPos, SEEK_SET);
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length = (UInt64)lengthTemp;
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return true;
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}
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off_t CFileBase::Seek(off_t distanceToMove, int moveMethod) const
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{
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return ::lseek(_handle, distanceToMove, moveMethod);
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}
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/////////////////////////
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// CInFile
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bool CInFile::Open(const char *name)
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{
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return CFileBase::OpenBinary(name, O_RDONLY);
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}
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bool CInFile::OpenShared(const char *name, bool)
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{
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return Open(name);
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}
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ssize_t CInFile::Read(void *data, size_t size)
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{
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return read(_handle, data, size);
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}
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/////////////////////////
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// COutFile
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bool COutFile::Create(const char *name, bool createAlways)
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{
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if (createAlways)
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{
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Close();
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_handle = ::creat(name, 0666);
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return _handle != -1;
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}
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return OpenBinary(name, O_CREAT | O_EXCL | O_WRONLY);
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}
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bool COutFile::Open(const char *name, DWORD creationDisposition)
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{
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return Create(name, false);
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}
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ssize_t COutFile::Write(const void *data, size_t size)
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{
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return write(_handle, data, size);
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}
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}}}
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