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-rwxr-xr-xCPP/Common/C_FileIO.cpp88
1 files changed, 88 insertions, 0 deletions
diff --git a/CPP/Common/C_FileIO.cpp b/CPP/Common/C_FileIO.cpp
new file mode 100755
index 0000000..0e5647f
--- /dev/null
+++ b/CPP/Common/C_FileIO.cpp
@@ -0,0 +1,88 @@
+// Common/C_FileIO.h
+
+#include "C_FileIO.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+
+namespace NC {
+namespace NFile {
+namespace NIO {
+
+bool CFileBase::OpenBinary(const char *name, int flags)
+{
+ #ifdef O_BINARY
+ flags |= O_BINARY;
+ #endif
+ Close();
+ _handle = ::open(name, flags, 0666);
+ return _handle != -1;
+}
+
+bool CFileBase::Close()
+{
+ if (_handle == -1)
+ return true;
+ if (close(_handle) != 0)
+ return false;
+ _handle = -1;
+ return true;
+}
+
+bool CFileBase::GetLength(UInt64 &length) const
+{
+ off_t curPos = Seek(0, SEEK_CUR);
+ off_t lengthTemp = Seek(0, SEEK_END);
+ Seek(curPos, SEEK_SET);
+ length = (UInt64)lengthTemp;
+ return true;
+}
+
+off_t CFileBase::Seek(off_t distanceToMove, int moveMethod) const
+{
+ return ::lseek(_handle, distanceToMove, moveMethod);
+}
+
+/////////////////////////
+// CInFile
+
+bool CInFile::Open(const char *name)
+{
+ return CFileBase::OpenBinary(name, O_RDONLY);
+}
+
+bool CInFile::OpenShared(const char *name, bool)
+{
+ return Open(name);
+}
+
+ssize_t CInFile::Read(void *data, size_t size)
+{
+ return read(_handle, data, size);
+}
+
+/////////////////////////
+// COutFile
+
+bool COutFile::Create(const char *name, bool createAlways)
+{
+ if (createAlways)
+ {
+ Close();
+ _handle = ::creat(name, 0666);
+ return _handle != -1;
+ }
+ return OpenBinary(name, O_CREAT | O_EXCL | O_WRONLY);
+}
+
+bool COutFile::Open(const char *name, DWORD creationDisposition)
+{
+ return Create(name, false);
+}
+
+ssize_t COutFile::Write(const void *data, size_t size)
+{
+ return write(_handle, data, size);
+}
+
+}}}