468 lines
14 KiB
C++
468 lines
14 KiB
C++
/*
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=======================================================================================
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Name :SaveMngr.cpp
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Author :Vincent Lhullier Date :11/07/97
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Description :manage save of data before modification
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Create a copy of GameData tree with all file that would be modified. That will allow
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someone to recuperate previous version if save generate some problem in data.
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=======================================================================================
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Modification -> Author : Date :
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Description :
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=======================================================================================
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*/
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
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#include "stdafx.h"
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#include <io.h>
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#include <sys/stat.h>
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#include "SaveMngr.h"
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//#include "acp_base.h"
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//#include "itf/CPAProj.hpp"
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//#include "DPT.h"
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//#include "SCR.h"
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
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/*
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=======================================================================================
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GLOBALS
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=======================================================================================
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*/
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static char SAVE_g_szDirName[ _MAX_PATH ];
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static char SAVE_g_szTargetDirName[ _MAX_PATH ];
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/*
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=======================================================================================
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=======================================================================================
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FUNCTIONS
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=======================================================================================
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=======================================================================================
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*/
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char *fn_szGetGameDataPath( void )
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{
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return "GameData";
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}
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/*
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=======================================================================================
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Directory Functions
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=======================================================================================
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*/
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/*
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----------------------------------------------------------------------------------------
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Don't call this function directly, it is used by SAVE_fn_bDeleteTree
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Description : delete recursively a directory
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Returns (BOOL ) true if success
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----------------------------------------------------------------------------------------
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*/
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BOOL fn_bDeleteTree( void )
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{
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WIN32_FIND_DATA stFindData;
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HANDLE hFind;
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char *p_szEndDirName;
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p_szEndDirName = SAVE_g_szDirName + strlen( SAVE_g_szDirName );
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strcpy( p_szEndDirName, "\\*.*" );
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if( (hFind = FindFirstFile(SAVE_g_szDirName, &stFindData )) == INVALID_HANDLE_VALUE)
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return TRUE;
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*p_szEndDirName = 0;
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do
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{
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*p_szEndDirName = '\\';
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strcpy( p_szEndDirName + 1, stFindData.cFileName );
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if ( stFindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
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{
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if ( *stFindData.cFileName != '.')
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{
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if ( !fn_bDeleteTree() )
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return FALSE;
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}
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}
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else
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{
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if (_access( SAVE_g_szDirName, 2) == -1 )
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_chmod( SAVE_g_szDirName, _S_IWRITE );
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if ( !DeleteFile( SAVE_g_szDirName ) )
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return FALSE;
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}
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*p_szEndDirName = 0;
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} while(FindNextFile( hFind, &stFindData ));
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FindClose( hFind );
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return RemoveDirectory( SAVE_g_szDirName );
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}
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/*
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----------------------------------------------------------------------------------------
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Description : delete completely a directory
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szDirName -> name of dir to delete
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Returns (BOOL ) true if success
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----------------------------------------------------------------------------------------
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*/
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BOOL SAVE_fn_bDeleteTree( char *szDirName )
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{
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strcpy( SAVE_g_szDirName, szDirName );
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return fn_bDeleteTree();
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}
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/*
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----------------------------------------------------------------------------------------
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Description : create a directory
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szDirName -> name of directory
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Returns (BOOL ) true if sucess
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----------------------------------------------------------------------------------------
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*/
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BOOL SAVE_fn_bCreateDirectory( char *szDirName )
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{
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if ( (!CreateDirectory( szDirName, NULL )) && (GetLastError() != ERROR_ALREADY_EXISTS) )
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{
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char *p_szCur;
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p_szCur = strchr( szDirName, '\\');
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while (p_szCur != NULL)
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{
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*p_szCur = 0;
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if ((!CreateDirectory (szDirName, NULL)) && (GetLastError() != ERROR_ALREADY_EXISTS) )
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{
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char szMessage[ 512 ];
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sprintf( szMessage, "Can't create local path %s", szDirName );
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SAVE_fn_vErrorMessage( szMessage );
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return FALSE;
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}
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*p_szCur++ = '\\';
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p_szCur = strchr( p_szCur, '\\');
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};
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if ((!CreateDirectory (szDirName, NULL)) && (GetLastError() != ERROR_ALREADY_EXISTS) )
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{
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char szMessage[ 512 ];
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sprintf( szMessage, "Can't create local path %s", szDirName );
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SAVE_fn_vErrorMessage( szMessage );
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return FALSE;
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}
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}
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return TRUE;
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}
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/*
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----------------------------------------------------------------------------------------
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Description : move directory (source and target dir names are stored in global var
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SAVE_g_szDirName and SAVE_g_szTargetDirName )
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Returns (BOOL ) true if success
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----------------------------------------------------------------------------------------
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*/
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BOOL fn_bMoveDirectory( void )
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{
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WIN32_FIND_DATA stFindData;
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HANDLE hFind;
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char *p_szEndSource;
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char *p_szEndTarget;
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if ( _access( SAVE_g_szTargetDirName, 0) != 0)
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return MoveFile( SAVE_g_szDirName , SAVE_g_szTargetDirName );
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p_szEndSource = SAVE_g_szDirName + strlen( SAVE_g_szDirName );
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p_szEndTarget = SAVE_g_szTargetDirName + strlen( SAVE_g_szTargetDirName );
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strcpy( p_szEndSource, "\\*.*" );
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if( (hFind = FindFirstFile(SAVE_g_szDirName, &stFindData )) == INVALID_HANDLE_VALUE)
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return TRUE;
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*p_szEndSource = 0;
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do
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{
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*p_szEndTarget = *p_szEndSource = '\\';
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strcpy( p_szEndSource + 1, stFindData.cFileName );
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strcpy( p_szEndTarget + 1, stFindData.cFileName );
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if ( stFindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
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{
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if ( *stFindData.cFileName != '.')
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{
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if ( !fn_bMoveDirectory() )
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return FALSE;
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}
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}
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else
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{
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if (_access( SAVE_g_szTargetDirName, 0) == 0)
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{
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if (_access( SAVE_g_szTargetDirName, 2) == -1 )
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_chmod( SAVE_g_szTargetDirName, _S_IWRITE );
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if ( !DeleteFile( SAVE_g_szTargetDirName ) )
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return FALSE;
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}
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if ( !MoveFile( SAVE_g_szDirName, SAVE_g_szTargetDirName ) )
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return FALSE;
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}
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*p_szEndSource = *p_szEndTarget = 0;
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} while(FindNextFile( hFind, &stFindData ));
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FindClose( hFind );
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return RemoveDirectory( SAVE_g_szDirName );
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}
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/*
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----------------------------------------------------------------------------------------
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Description : move a directory into another one
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szSourceDir -> source directory
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szTargetDir -> target directory
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Returns (BOOL ) true if success
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----------------------------------------------------------------------------------------
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*/
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BOOL SAVE_fn_bMoveDirectory( char *szSourceDir, char *szTargetDir )
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{
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strcpy( SAVE_g_szTargetDirName, szTargetDir );
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strcpy( SAVE_g_szDirName, szSourceDir );
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return fn_bMoveDirectory();
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}
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/*
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=======================================================================================
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Error functions
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=======================================================================================
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*/
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/*
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----------------------------------------------------------------------------------------
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Description : display an error message
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_szMessage -> message to display
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----------------------------------------------------------------------------------------
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*/
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void SAVE_fn_vErrorMessage( char *_szMessage )
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{
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char szError[1024];
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char *p_szError = szError;
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p_szError += sprintf( p_szError, "Error saving current version before saving new data\n" );
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p_szError += sprintf( p_szError, "You will not be able to get local previous version\n" );
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p_szError += sprintf( p_szError, "---------------------------------------------------\n" );
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p_szError += sprintf( p_szError, "%s\n\n", _szMessage );
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p_szError += sprintf( p_szError, " Save anyway ?" );
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//SAVE_g_bContinue = AfxMessageBox( szError, MB_ICONSTOP | MB_YESNO );
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}
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/*
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=======================================================================================
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Version functions
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=======================================================================================
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*/
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/*
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----------------------------------------------------------------------------------------
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Description :
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_szSavedDirectoryName -> name of directory from which function extract version number
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Returns (long ) version number if it's a valid directory, -1 else
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----------------------------------------------------------------------------------------
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*/
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long SAVE_fn_lGetVersionNumberFromDirExt( char *_szSavedDirectoryName )
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{
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char *p_szExt;
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long lVersionNumber = -1;
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p_szExt = strchr( _szSavedDirectoryName, '.' );
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if (p_szExt != NULL)
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{
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if ( strlen( ++p_szExt ) == 3)
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{
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lVersionNumber = 0;
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while (*p_szExt != 0)
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{
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if ( !isdigit (*p_szExt) )
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return -1;
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lVersionNumber = lVersionNumber * 10 + (*p_szExt++ - '0');
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}
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}
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}
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return lVersionNumber;
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}
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/*
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----------------------------------------------------------------------------------------
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Description : return name of directory used to store data for a given version
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lVersion -> version number
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szVersionDirName -> to put dir name (assumed to be long enough )
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----------------------------------------------------------------------------------------
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*/
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void SAVE_fn_vGetVersionDirName( long _lVersion, char *_szVersionDirName )
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{
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sprintf( _szVersionDirName, "%s.%03d", fn_szGetGameDataPath(), _lVersion );
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}
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/*
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----------------------------------------------------------------------------------------
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Description : delete a version directory
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_lVersion -> number of version
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Returns (BOOL ) true if success
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----------------------------------------------------------------------------------------
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*/
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BOOL SAVE_fn_bDeleteVersion( long _lVersion )
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{
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char szVersionName[ _MAX_PATH ];
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SAVE_fn_vGetVersionDirName( _lVersion, szVersionName );
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if (!SAVE_fn_bDeleteTree( szVersionName ))
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{
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char szMessage[100];
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sprintf( szMessage, "Can't delete old %s version directory", szVersionName );
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SAVE_fn_vErrorMessage( szMessage );
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return FALSE;
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}
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return TRUE;
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}
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/*
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----------------------------------------------------------------------------------------
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Description : rename a version
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_lOldVersion -> old version number
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_lNewVersion -> new version number
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Returns (BOOL )
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----------------------------------------------------------------------------------------
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*/
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BOOL SAVE_fn_bRenameVersion( long _lOldVersion, long _lNewVersion )
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{
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char szOldVersion[ _MAX_PATH ];
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char szNewVersion[ _MAX_PATH ];
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SAVE_fn_vGetVersionDirName( _lOldVersion, szOldVersion );
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SAVE_fn_vGetVersionDirName( _lNewVersion, szNewVersion );
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if ( !MoveFile( szOldVersion, szNewVersion) )
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{
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char szMessage[100];
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sprintf( szMessage, "Can't rename old %s version to new version %s ", szOldVersion, szNewVersion );
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SAVE_fn_vErrorMessage( szMessage );
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return FALSE;
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}
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return TRUE;
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}
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/*
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----------------------------------------------------------------------------------------
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Description : analyse the current version that are on disk
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a_cVersion -> array of 1000 char that will be filled
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each case is a flag that indicate if a version number is used or not
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return (long) number of used version
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----------------------------------------------------------------------------------------
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*/
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long SAVE_fn_lGetUsedVersion( char *a_cVersion, SYSTEMTIME *a_stTime )
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{
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WIN32_FIND_DATA stFindData;
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HANDLE hFind;
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char szFilter[ _MAX_PATH ];
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long lNumberOfVersions = 0;
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long lVersion;
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FILETIME stLocalFileTime;
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/*
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* set all version as unused
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*/
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memset ( a_cVersion , 0, 1000 );
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sprintf( szFilter, "%s.*", fn_szGetGameDataPath() );
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if( (hFind = FindFirstFile(szFilter, &stFindData )) == INVALID_HANDLE_VALUE)
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return 0;
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do
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{
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if ( stFindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
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{
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lVersion = SAVE_fn_lGetVersionNumberFromDirExt( stFindData.cFileName );
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if (lVersion != -1)
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{
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a_cVersion[ lVersion ] = 1;
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if (a_stTime != NULL)
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{
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FileTimeToLocalFileTime( &stFindData.ftCreationTime, &stLocalFileTime );
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FileTimeToSystemTime( &stLocalFileTime, &a_stTime[ lVersion ] );
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}
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lNumberOfVersions++ ;
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}
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}
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} while(FindNextFile( hFind, &stFindData ));
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FindClose( hFind );
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return lNumberOfVersions;
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}
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/*
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----------------------------------------------------------------------------------------
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Description : analyse the current version that are on disk
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----------------------------------------------------------------------------------------
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*/
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long SAVE_fn_lAnalyseCurrentUsedVersion( char *a_cVersion, SYSTEMTIME *a_stTime )
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{
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long lNumberOfVersions;
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long lVersion;
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long lVersionIndex;
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long lLastUnusedVersion = -1;
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/*
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* get used versions
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*/
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lNumberOfVersions = SAVE_fn_lGetUsedVersion( a_cVersion, a_stTime );
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if (lNumberOfVersions == 0)
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return 0;
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/*
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* check for hole in version number
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*/
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lVersion = 0;
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for (lVersionIndex = 0; lVersion < lNumberOfVersions; lVersionIndex ++)
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{
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if (a_cVersion[ lVersionIndex ])
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lVersion ++;
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else
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lLastUnusedVersion = lVersionIndex;
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}
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if (lLastUnusedVersion == -1)
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return lNumberOfVersions;
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for (lVersionIndex = 0; lVersionIndex < lLastUnusedVersion; lVersionIndex++)
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{
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if (a_cVersion[ lVersionIndex ])
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{
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if (!SAVE_fn_bDeleteVersion( lVersionIndex ))
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return 0;
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}
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}
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lVersion = 0;
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for (lVersionIndex = lLastUnusedVersion + 1; a_cVersion[ lVersionIndex ]; lVersionIndex ++)
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{
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if (!SAVE_fn_bRenameVersion( lVersionIndex, lVersion ))
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return 0;
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a_cVersion[lVersion] = 1;
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if (a_stTime != NULL)
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a_stTime[lVersion] = a_stTime[lVersionIndex];
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lVersion ++;
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}
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return lVersion;
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}
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