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\hypertarget{xbmemo_8h_source}{}\doxysection{xbmemo.\+h}
\label{xbmemo_8h_source}\index{/mnt/1Tdata/xbase/xbase64-\/4.0.2/src/include/xbmemo.h@{/mnt/1Tdata/xbase/xbase64-\/4.0.2/src/include/xbmemo.h}}
\mbox{\hyperlink{xbmemo_8h}{Go to the documentation of this file.}}
\begin{DoxyCode}{0}
\DoxyCodeLine{1 \textcolor{comment}{/* xbmemo.h}}
\DoxyCodeLine{2 \textcolor{comment}{}}
\DoxyCodeLine{3 \textcolor{comment}{XBase64 Software Library}}
\DoxyCodeLine{4 \textcolor{comment}{}}
\DoxyCodeLine{5 \textcolor{comment}{Copyright (c) 1997,2003,2014,2022 Gary A Kunkel}}
\DoxyCodeLine{6 \textcolor{comment}{}}
\DoxyCodeLine{7 \textcolor{comment}{The xb64 software library is covered under the terms of the GPL Version 3, 2007 license.}}
\DoxyCodeLine{8 \textcolor{comment}{}}
\DoxyCodeLine{9 \textcolor{comment}{Email Contact:}}
\DoxyCodeLine{10 \textcolor{comment}{}}
\DoxyCodeLine{11 \textcolor{comment}{ XDB-\/devel@lists.sourceforge.net}}
\DoxyCodeLine{12 \textcolor{comment}{ XDB-\/users@lists.sourceforge.net}}
\DoxyCodeLine{13 \textcolor{comment}{}}
\DoxyCodeLine{14 \textcolor{comment}{*/}}
\DoxyCodeLine{15 }
\DoxyCodeLine{16 }
\DoxyCodeLine{17 \textcolor{preprocessor}{\#ifndef \_\_XB\_XBMEMO\_H\_\_}}
\DoxyCodeLine{18 \textcolor{preprocessor}{\#define \_\_XB\_XBMEMO\_H\_\_}}
\DoxyCodeLine{19 }
\DoxyCodeLine{20 }
\DoxyCodeLine{21 \textcolor{comment}{// dont use "{}\#pragma interface"{} with abstract classes}}
\DoxyCodeLine{22 \textcolor{comment}{// \#ifdef CMAKE\_COMPILER\_IS\_GNUCC}}
\DoxyCodeLine{23 \textcolor{comment}{// \#pragma interface}}
\DoxyCodeLine{24 \textcolor{comment}{// \#endif}}
\DoxyCodeLine{25 }
\DoxyCodeLine{26 \textcolor{preprocessor}{\#ifdef XB\_MEMO\_SUPPORT}}
\DoxyCodeLine{27 }
\DoxyCodeLine{28 }
\DoxyCodeLine{29 }
\DoxyCodeLine{30 }
\DoxyCodeLine{31 \textcolor{keyword}{namespace }\mbox{\hyperlink{namespacexb}{xb}}\{}
\DoxyCodeLine{32 }
\DoxyCodeLine{34 }
\DoxyCodeLine{55 \textcolor{keyword}{class }XBDLLEXPORT xbMemo : \textcolor{keyword}{public} xbFile \{}
\DoxyCodeLine{56 \textcolor{keyword}{public}:}
\DoxyCodeLine{57 }
\DoxyCodeLine{58 xbMemo( \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} *dbf, xbString \textcolor{keyword}{const} \&sFileName );}
\DoxyCodeLine{59 }
\DoxyCodeLine{60 \textcolor{comment}{/* virtual methods */}}
\DoxyCodeLine{61 \textcolor{keyword}{virtual} \string~xbMemo();}
\DoxyCodeLine{62 \textcolor{keyword}{virtual} xbInt16 Abort () = 0;}
\DoxyCodeLine{63 \textcolor{keyword}{virtual} xbInt16 CloseMemoFile ();}
\DoxyCodeLine{64 \textcolor{keyword}{virtual} xbInt16 Commit () = 0;}
\DoxyCodeLine{65 }
\DoxyCodeLine{66 \textcolor{preprocessor}{ \#ifdef XB\_LOCKING\_SUPPORT}}
\DoxyCodeLine{67 \textcolor{keyword}{virtual} xbInt16 LockMemo ( xbInt16 iLockFunction );}
\DoxyCodeLine{68 \textcolor{keyword}{virtual} \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} GetMemoLocked () \textcolor{keyword}{const};}
\DoxyCodeLine{69 \textcolor{preprocessor}{ \#endif}}
\DoxyCodeLine{70 }
\DoxyCodeLine{71 \textcolor{comment}{/* pure virtual methods */}}
\DoxyCodeLine{72 \textcolor{keyword}{virtual} xbInt16 CreateMemoFile () = 0;}
\DoxyCodeLine{73 }
\DoxyCodeLine{74 \textcolor{keyword}{virtual} xbInt16 GetMemoField ( xbInt16 iFieldNo, xbString \&sMemoData ) = 0;}
\DoxyCodeLine{75 \textcolor{keyword}{virtual} xbInt16 GetMemoFieldLen( xbInt16 iFieldNo, xbUInt32 \&ulMemoFieldLen ) = 0;}
\DoxyCodeLine{76 \textcolor{keyword}{virtual} xbInt16 OpenMemoFile () = 0;}
\DoxyCodeLine{77 \textcolor{keyword}{virtual} xbInt16 GetMemoFileType();}
\DoxyCodeLine{78 \textcolor{keyword}{virtual} xbInt16 PackMemo ( \textcolor{keywordtype}{void} (*memoStatusFunc)(xbUInt32 ulItemNum, xbUInt32 ulNumItems)) = 0;}
\DoxyCodeLine{79 \textcolor{keyword}{virtual} xbInt16 UpdateMemoField( xbInt16 iFieldNo, \textcolor{keyword}{const} xbString \&sMemoData ) = 0;}
\DoxyCodeLine{80 }
\DoxyCodeLine{81 \textcolor{preprocessor}{ \#ifdef XB\_DEBUG\_SUPPORT}}
\DoxyCodeLine{82 \textcolor{keyword}{virtual} xbInt16 DumpMemoFreeChain() = 0;}
\DoxyCodeLine{83 \textcolor{keyword}{virtual} xbInt16 DumpMemoHeader () = 0;}
\DoxyCodeLine{84 \textcolor{preprocessor}{ \#endif}}
\DoxyCodeLine{85 }
\DoxyCodeLine{86 \textcolor{comment}{// *********** FIXME *************}}
\DoxyCodeLine{87 \textcolor{comment}{// next two methods should be protected but are called in the xb\_test\_xxxx programs testing routines}}
\DoxyCodeLine{88 \textcolor{comment}{// so for now, they are kept as public}}
\DoxyCodeLine{89 \textcolor{keyword}{virtual} xbInt16 CalcLastDataBlock ( xbUInt32 \&lLastDataBlock );}
\DoxyCodeLine{90 \textcolor{keyword}{virtual} xbInt16 GetHdrNextBlock ( xbUInt32 \&ulBlockNo );}
\DoxyCodeLine{91 }
\DoxyCodeLine{92 \textcolor{keyword}{protected}:}
\DoxyCodeLine{93 \textcolor{keyword}{friend} \textcolor{keyword}{class }\mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}};}
\DoxyCodeLine{94 }
\DoxyCodeLine{95 \textcolor{keyword}{virtual} xbInt16 ReadDbtHeader ( xbInt16 iOption ) = 0;}
\DoxyCodeLine{96 \textcolor{keyword}{virtual} xbInt16 UpdateHeaderName () = 0;}
\DoxyCodeLine{97 \textcolor{keyword}{virtual} xbInt16 UpdateHeadNextNode();}
\DoxyCodeLine{98 \textcolor{keyword}{virtual} xbInt16 Zap () = 0;}
\DoxyCodeLine{99 }
\DoxyCodeLine{100 \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} *dbf; \textcolor{comment}{/* pointer to related dbf instance */}}
\DoxyCodeLine{101 \textcolor{keywordtype}{char} cVersion; \textcolor{comment}{/* byte 16 off the header block, 0x03 for V3, version IV -\/ ? */}}
\DoxyCodeLine{102 xbInt16 iMemoFileType; \textcolor{comment}{/* 3 = version III, 4 = version IV */}}
\DoxyCodeLine{103 xbUInt32 ulHdrNextBlock; \textcolor{comment}{/* next available block , bytes 0-\/3 of the memo header */}}
\DoxyCodeLine{104 \textcolor{keywordtype}{void} * mbb; \textcolor{comment}{/* memo block buffer */}}
\DoxyCodeLine{105 }
\DoxyCodeLine{106 }
\DoxyCodeLine{107 \textcolor{keyword}{private}:}
\DoxyCodeLine{108 }
\DoxyCodeLine{109 \textcolor{preprocessor}{ \#ifdef XB\_LOCKING\_SUPPORT}}
\DoxyCodeLine{110 \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} bFileLocked; \textcolor{comment}{/* memo file locked */}}
\DoxyCodeLine{111 \textcolor{preprocessor}{ \#endif}}
\DoxyCodeLine{112 }
\DoxyCodeLine{113 \};}
\DoxyCodeLine{114 }
\DoxyCodeLine{115 }
\DoxyCodeLine{116 }
\DoxyCodeLine{117 \textcolor{preprocessor}{\#ifdef XB\_DBF3\_SUPPORT}}
\DoxyCodeLine{119 }
\DoxyCodeLine{131 \textcolor{keyword}{class }XBDLLEXPORT xbMemoDbt3 : \textcolor{keyword}{public} xbMemo \{}
\DoxyCodeLine{132 \textcolor{keyword}{public}:}
\DoxyCodeLine{133 xbMemoDbt3( \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} *dbf, xbString \textcolor{keyword}{const} \&sFileName );}
\DoxyCodeLine{134 \string~xbMemoDbt3();}
\DoxyCodeLine{135 \textcolor{keyword}{virtual} xbInt16 Abort ();}
\DoxyCodeLine{136 \textcolor{keyword}{virtual} xbInt16 Commit ();}
\DoxyCodeLine{137 \textcolor{keyword}{virtual} xbInt16 CreateMemoFile ();}
\DoxyCodeLine{138 \textcolor{keyword}{virtual} xbInt16 GetMemoField ( xbInt16 iFieldNo, xbString \&sMemoData );}
\DoxyCodeLine{139 \textcolor{keyword}{virtual} xbInt16 GetMemoFieldLen( xbInt16 iFieldNo, xbUInt32 \&ulMemoFieldLen );}
\DoxyCodeLine{140 \textcolor{keyword}{virtual} xbInt16 OpenMemoFile ();}
\DoxyCodeLine{141 \textcolor{keyword}{virtual} xbInt16 PackMemo ( \textcolor{keywordtype}{void} (*memoStatusFunc) (xbUInt32 ulItemNum, xbUInt32 ulNumItems));}
\DoxyCodeLine{142 \textcolor{keyword}{virtual} xbInt16 UpdateMemoField( xbInt16 iFieldNo, \textcolor{keyword}{const} xbString \&sMemoData );}
\DoxyCodeLine{143 }
\DoxyCodeLine{144 \textcolor{preprocessor}{ \#ifdef XB\_DEBUG\_SUPPORT}}
\DoxyCodeLine{145 \textcolor{keyword}{virtual} xbInt16 DumpMemoFreeChain();}
\DoxyCodeLine{146 \textcolor{keyword}{virtual} xbInt16 DumpMemoHeader ();}
\DoxyCodeLine{147 \textcolor{preprocessor}{ \#endif}}
\DoxyCodeLine{148 }
\DoxyCodeLine{149 \textcolor{keyword}{protected}:}
\DoxyCodeLine{150 \textcolor{keyword}{virtual} xbInt16 ReadDbtHeader( xbInt16 iOption );}
\DoxyCodeLine{151 \textcolor{keyword}{virtual} xbInt16 UpdateHeaderName();}
\DoxyCodeLine{152 \textcolor{keyword}{virtual} xbInt16 Zap();}
\DoxyCodeLine{153 }
\DoxyCodeLine{154 \textcolor{keyword}{private}:}
\DoxyCodeLine{155 \};}
\DoxyCodeLine{156 \textcolor{preprocessor}{\#endif}}
\DoxyCodeLine{157 }
\DoxyCodeLine{158 }
\DoxyCodeLine{159 \textcolor{preprocessor}{\#ifdef XB\_DBF4\_SUPPORT}}
\DoxyCodeLine{160 }
\DoxyCodeLine{162 }
\DoxyCodeLine{172 \textcolor{keyword}{class }XBDLLEXPORT xbMemoDbt4 : \textcolor{keyword}{public} xbMemo \{}
\DoxyCodeLine{173 \textcolor{keyword}{public}:}
\DoxyCodeLine{174 xbMemoDbt4( \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} *dbf, xbString \textcolor{keyword}{const} \&sFileName );}
\DoxyCodeLine{175 \string~xbMemoDbt4();}
\DoxyCodeLine{176 \textcolor{keyword}{virtual} xbInt16 Abort ();}
\DoxyCodeLine{177 \textcolor{keyword}{virtual} xbInt16 Commit ();}
\DoxyCodeLine{178 \textcolor{keyword}{virtual} xbInt16 CreateMemoFile ();}
\DoxyCodeLine{179 }
\DoxyCodeLine{180 \textcolor{keyword}{virtual} xbInt16 GetMemoField ( xbInt16 iFieldNo, xbString \&sMemoData );}
\DoxyCodeLine{181 \textcolor{keyword}{virtual} xbInt16 GetMemoFieldLen ( xbInt16 iFieldNo, xbUInt32 \&ulMemoFieldLen );}
\DoxyCodeLine{182 \textcolor{keyword}{virtual} xbInt16 GetMemoFieldLen ( xbInt16 iFieldNo, xbUInt32 \&ulMemoFieldLen, xbUInt32 \&lBlockNo );}
\DoxyCodeLine{183 \textcolor{keyword}{virtual} xbInt16 OpenMemoFile ();}
\DoxyCodeLine{184 \textcolor{keyword}{virtual} xbInt16 PackMemo ( \textcolor{keywordtype}{void} (*memoStatusFunc) (xbUInt32 ulItemNum, xbUInt32 ulNumItems));}
\DoxyCodeLine{185 \textcolor{keyword}{virtual} xbInt16 UpdateMemoField ( xbInt16 iFieldNo, \textcolor{keyword}{const} xbString \&sMemoData );}
\DoxyCodeLine{186 }
\DoxyCodeLine{187 \textcolor{preprocessor}{ \#ifdef XB\_DEBUG\_SUPPORT}}
\DoxyCodeLine{188 \textcolor{keyword}{virtual} xbInt16 DumpMemoFreeChain ();}
\DoxyCodeLine{189 \textcolor{keyword}{virtual} xbInt16 DumpMemoHeader ();}
\DoxyCodeLine{190 \textcolor{keyword}{virtual} xbInt16 DumpMemoInternals ();}
\DoxyCodeLine{191 \textcolor{keyword}{virtual} xbInt16 ReadFreeBlockHeader( xbUInt32 ulBlockNo, xbUInt32 \&ulNextBlock, xbUInt32 \&ulFreeBlockCnt );}
\DoxyCodeLine{192 \textcolor{preprocessor}{ \#endif}}
\DoxyCodeLine{193 }
\DoxyCodeLine{194 \textcolor{keyword}{protected}:}
\DoxyCodeLine{195 \textcolor{keyword}{virtual} xbInt16 FindBlockSetInChain( xbUInt32 ulBlocksNeeded, xbUInt32 \&ulLastDataBlock, xbUInt32 \&ulLocation, xbUInt32 \&ulPrevNode, \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} \&bFound );}
\DoxyCodeLine{196 \textcolor{keyword}{virtual} xbInt16 FreeMemoBlockChain( xbUInt32 ulBlockNo );}
\DoxyCodeLine{197 \textcolor{keyword}{virtual} xbInt16 FreeMemoBlockChain( xbUInt32 ulBlockNo, xbUInt32 \&ulLastDataBlock );}
\DoxyCodeLine{198 \textcolor{keyword}{virtual} xbInt16 GetBlockSetFromChain( xbUInt32 ulBlocksNeeded, xbUInt32 ulLocation, xbUInt32 ulPrevNode );}
\DoxyCodeLine{199 \textcolor{keyword}{virtual} xbInt16 ReadDbtHeader( xbInt16 iOption );}
\DoxyCodeLine{200 \textcolor{keyword}{virtual} xbInt16 ReadBlockHeader( xbUInt32 ulBlockNo, xbInt16 iOption );}
\DoxyCodeLine{201 \textcolor{keyword}{virtual} xbInt16 UpdateHeaderName ();}
\DoxyCodeLine{202 \textcolor{keyword}{virtual} xbInt16 WriteBlockHeader( xbUInt32 ulBlockNo, xbInt16 iOption );}
\DoxyCodeLine{203 \textcolor{keyword}{virtual} xbInt16 Zap();}
\DoxyCodeLine{204 }
\DoxyCodeLine{205 \textcolor{keyword}{private}:}
\DoxyCodeLine{206 xbString sDbfFileNameWoExt;}
\DoxyCodeLine{207 xbUInt32 ulNextFreeBlock;}
\DoxyCodeLine{208 xbUInt32 ulFreeBlockCnt;}
\DoxyCodeLine{209 xbInt16 iField1;}
\DoxyCodeLine{210 xbInt16 iStartPos;}
\DoxyCodeLine{211 xbUInt32 ulFieldLen;}
\DoxyCodeLine{212 }
\DoxyCodeLine{213 xbLinkList<xbUInt32> llOldBlocks; \textcolor{comment}{// list of previously used memo blocks for field, used by Commit() / Abort()}}
\DoxyCodeLine{214 xbLinkList<xbUInt32> llNewBlocks; \textcolor{comment}{// list of newly updated memo blocks for field, used by Commit() / Abort()}}
\DoxyCodeLine{215 }
\DoxyCodeLine{216 \};}
\DoxyCodeLine{217 \textcolor{preprocessor}{\#endif}}
\DoxyCodeLine{218 }
\DoxyCodeLine{219 }
\DoxyCodeLine{220 \} \textcolor{comment}{/* namespace xb */}}
\DoxyCodeLine{221 \textcolor{preprocessor}{\#endif }\textcolor{comment}{/* XB\_MEMO\_SUPPORT */}\textcolor{preprocessor}{}}
\DoxyCodeLine{222 \textcolor{preprocessor}{\#endif }\textcolor{comment}{/* \_\_XB\_MEMO\_H\_\_ */}\textcolor{preprocessor}{}}
\DoxyCodeLine{223 }
\end{DoxyCode}
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