Imported Upstream version 3.1.2upstream/3.1.2

1 files changed, 159 insertions, 0 deletions

diff --git a/xbase64/xblock.h b/xbase64/xblock.h
new file mode 100755
index 0000000..50dfcf2
--- /dev/null
+++ b/xbase64/xblock.h
@@ -0,0 +1,159 @@
+/*  xblock.h
+
+    Xbase project source code
+  
+    This file conatains a header file for the xbLock virtual objects which
+    is used for controlling file and record locking.  Record and file
+    locking has been rewritten in version 3.
+
+    Copyright (C) 1997,2003  Gary A Kunkel
+    
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+    Contact:
+    
+     Email:
+    
+      xdb-devel@lists.sourceforge.net
+      xdb-users@lists.sourceforge.net
+      
+      
+     Regular Mail:
+     
+       XBase Support
+       149C South Main St
+       Keller Texas, 76248     
+       USA
+*/
+
+/*! \file xblock.h
+*/
+
+#ifndef __XB_XBLOCK_H__
+#define __XB_XBLOCK_H__
+
+#ifdef __GNU LesserG__
+#pragma interface
+#endif
+
+#ifdef XB_LOCKING_ON
+
+//! xbLock class
+/*!
+*/
+
+class XBDLLEXPORT xbLock
+{
+public:
+  xbLock( xbDbf * dbf );
+  virtual ~xbLock();
+  virtual xbShort LockTableHeader( xbShort LockType ) = 0;
+  virtual xbShort LockTable( xbShort LockType ) = 0;
+  virtual xbShort LockRecord( xbShort LockType, xbULong RecNo, xbOffT len ) = 0;
+  virtual xbShort LockMemo( xbShort LockType ) = 0;
+  virtual xbShort LockIndex( xbShort LockType ) = 0;
+  virtual xbShort UnlockAll() = 0;
+  virtual xbShort LockInit() { return XB_NO_ERROR; }
+
+protected:
+  xbDbf   *dbf;
+  xbShort HdrLockCnt;
+  xbShort TableLockCnt;
+  xbShort MemoLockCnt;
+  xbShort IndexLockCnt;
+  xbShort LockFile( int fn, xbShort LockType, xbOffT lockLen  );
+};
+
+class XBDLLEXPORT xbaseLock : xbLock
+{
+public:
+  xbaseLock( xbDbf * pdbf );
+  virtual ~xbaseLock() {}
+  virtual xbShort LockTableHeader( xbShort LockType );
+  virtual xbShort LockTable( xbShort LockType );
+  virtual xbShort LockRecord( xbShort LockType, xbULong RecNo, xbOffT len );
+  virtual xbShort LockMemo( xbShort LockType ); 
+  virtual xbShort LockIndex( xbShort LockType ); 
+  virtual xbShort UnlockAll(); 
+  virtual xbShort LockInit();
+private:
+  FILE    *lfh;                    /* lock file handle */
+
+};
+
+class XBDLLEXPORT dbaseLock : xbLock
+{
+public:
+  dbaseLock( xbDbf * pdbf );
+  virtual ~dbaseLock() {}
+  virtual xbShort LockTableHeader( xbShort LockType );
+  virtual xbShort LockTable( xbShort LockType );
+  virtual xbShort LockRecord( xbShort LockType, xbULong RecNo, xbOffT len );
+  virtual xbShort LockMemo( xbShort LockType ); 
+  virtual xbShort LockIndex( xbShort LockType ); 
+  virtual xbShort UnlockAll(); 
+};
+
+
+class XBDLLEXPORT clipperLock : xbLock
+{
+public:
+  clipperLock( xbDbf * pdbf );
+  virtual ~clipperLock() {}
+  virtual xbShort LockTableHeader( xbShort LockType );
+  virtual xbShort LockTable( xbShort LockType );
+  virtual xbShort LockRecord( xbShort LockType, xbULong RecNo, xbOffT len );
+  virtual xbShort LockMemo( xbShort LockType ); 
+  virtual xbShort LockIndex( xbShort LockType ); 
+  virtual xbShort UnlockAll(); 
+};
+
+class XBDLLEXPORT foxproLock : xbLock
+{
+public:
+  foxproLock( xbDbf * pdbf );
+  virtual ~foxproLock() {}
+  virtual xbShort LockTableHeader( xbShort LockType );
+  virtual xbShort LockTable( xbShort LockType );
+  virtual xbShort LockRecord( xbShort LockType, xbULong RecNo, xbOffT len );
+  virtual xbShort LockMemo( xbShort LockType ); 
+  virtual xbShort LockIndex( xbShort LockType ); 
+  virtual xbShort UnlockAll(); 
+};
+
+class XBDLLEXPORT noLock : xbLock
+{
+public:
+  noLock( xbDbf * pdbf ) : xbLock( pdbf ) {};
+  virtual ~noLock() {}
+  virtual xbShort LockTableHeader( xbShort LockType )
+            { return XB_NO_ERROR; }
+  virtual xbShort LockTable( xbShort LockType )
+            { return XB_NO_ERROR; }
+  virtual xbShort LockRecord( xbShort LockType, xbULong RecNo )
+            { return XB_NO_ERROR; }
+  virtual xbShort LockMemo( xbShort LockType )
+            { return XB_NO_ERROR; }
+  virtual xbShort LockIndex( xbShort LockType )
+            { return XB_NO_ERROR; }
+  virtual xbShort UnlockAll()
+            { return XB_NO_ERROR; }
+};
+
+
+
+
+#endif   // XB_LOCKING_ON
+#endif   // __XB_XBLOCK_H__