$PBExportHeader$f_backup_db.srf
global type f_backup_db from function_object
end type

forward prototypes
global function integer f_backup_db (boolean arg_winrar, string arg_database, string arg_filename, ref string arg_msg)
end prototypes

global function integer f_backup_db (boolean arg_winrar, string arg_database, string arg_filename, ref string arg_msg);//备份数据库
//f_backup_db(arg_winrar,arg_database,arg_filename,arg_msg)
Int rslt = 1
String comm

IF FileExists(arg_filename) THEN
	rslt = 0
	arg_msg = '备份文件已经存在,请重新填写备份文件名!'
	GOTO ext
END IF

comm = 'BACKUP DATABASE '+arg_database+' TO DISK= ~''+arg_filename+'~' with init '

Transaction ls_transsqlca
ls_transsqlca = CREATE Transaction

ls_transsqlca.DBMS = sqlca.DBMS
ls_transsqlca.Database   = 'master'
ls_transsqlca.UserID = sqlca.UserID
ls_transsqlca.DBPass = sqlca.DBPass
ls_transsqlca.LogID = sqlca.LogID
ls_transsqlca.LogPass = sqlca.LogPass
ls_transsqlca.ServerName = sqlca.ServerName
ls_transsqlca.DBParm = sqlca.DBParm

IF ls_transsqlca.Database = '' OR ls_transsqlca.ServerName = '' THEN
	rslt = 0
	arg_msg = "连接数据管理库失败!"
	GOTO ext
END IF

w_sys_wait.Show()

CONNECT USING ls_transsqlca;
ls_transsqlca.AutoCommit = TRUE

EXECUTE IMMEDIATE :comm USING ls_transsqlca;
w_sys_wait.Hide()

IF ls_transsqlca.SQLCode <> 0 THEN
	arg_msg = '备份操作失败>'+ls_transsqlca.SQLErrText
	ROLLBACK USING ls_transsqlca;
	rslt = 0
	GOTO ext
END IF

IF arg_winrar THEN
	String rar_comm //rar命令
	String rar_path
	String rar_filename
	
	rar_filename = Reverse(Mid(Reverse ( arg_filename ),Pos( Reverse ( arg_filename ) ,'.') + 1,Pos( Reverse ( arg_filename ) ,'\') - Pos( Reverse ( arg_filename ) ,'.') - 1 )) + ".rar"
	
	
	rar_path = Left(arg_filename,Len(arg_filename) - Pos( Reverse ( arg_filename ) ,'\') + 1 )
	rar_filename = rar_path + rar_filename
	
	
	rar_comm = sys_option_winrar_path + 'winrar a -p -df -o+ -ep "' + rar_filename +'" "'+ arg_filename + '"'
	
	IF Run(rar_comm) <> 1 THEN
		ROLLBACK USING ls_transsqlca;
		IF FileExists ( arg_filename ) THEN FileDelete ( arg_filename )
		rslt = 0
		arg_msg = '备份操作失败>压缩文件失败'
		GOTO ext
	END IF
END IF

COMMIT USING ls_transsqlca;
arg_msg = '备份操作成功！'

ext:
DESTROY ls_transsqlca
RETURN rslt

end function