搭建PVB架构，实现前端的基础布局、菜单、表格、图示等功能

libs/pvb/include/rllib/rlhistorylogger.h

@@ -0,0 +1,55 @@
+/***************************************************************************
+                       rlhistorylogger.h  -  description
+                             -------------------
+    begin                : Wed Dec 06 2006
+    copyright            : (C) 2006 by R. Lehrig
+    email                : lehrig@t-online.de
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This library 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                             *
+ *                                                                         *
+ ***************************************************************************/
+#ifndef _RL_HISTORY_LOGGER_H_
+#define _RL_HISTORY_LOGGER_H_
+
+#include "rldefine.h"
+#include "rltime.h"
+#include "rlthread.h"
+#include <stdio.h>
+
+typedef struct _rlHistoryLogLine_
+{
+  _rlHistoryLogLine_ *next;
+  char *line;
+}rlHistoryLogLine;
+
+/*! <pre>
+This class logs tab separated text including time stamp in 10 csv files + actual values in memory
+This is for archiveing historical data with time stamp.
+You should separate the text in pushLine with tab.
+</pre> */
+class rlHistoryLogger
+{
+public:
+  rlHistoryLogger(const char *csvName, int maxHoursPerFile, int maxLinesInMemory=100);
+  virtual ~rlHistoryLogger();
+  int pushLine(const char *text);
+  const char *firstLine();
+  const char *nextLine();
+  rlMutex mutex;
+  int debug;
+private:
+  int pushLineToMemory(const char *line);
+  int pushLineToFile(const char *line);
+  int openFile();
+  rlHistoryLogLine *first_line,*current_line;
+  rlTime time,file_start_time,time_diff;
+  FILE *fout;
+  int max_hours_per_file, max_lines_in_memory, current_file;
+  char *csv_name, *csv_file_name;
+};
+#endif