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