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//+------------------------------------------------------------------+
//|                                              idSemiAutomatic.mq5 |
//|                                   Copyright 2018, Pierre Rougier |
//|                                           www.apprendre-mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2018, Pierre Rougier"
#property link      "www.apprendre-mql5.com"
#property version   "1.00"
#property indicator_separate_window

#property indicator_buffers 5
#property indicator_plots   1
#property indicator_type1   DRAW_CANDLES
//--- wicks and outlines are green, bullish candle body is white, while bearish candle body is red 
#property indicator_color1  clrLime,clrBlack,clrWhite

input datetime input_datetime=D'2019.06.12 00:00';

//--- Indicator buffers 
double         OpenBuffer1[];
double         HighBuffer2[];
double         LowBuffer3[];
double         CloseBuffer4[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {

//--- indicator buffers mapping 
   SetIndexBuffer(0,OpenBuffer1,INDICATOR_DATA);
   SetIndexBuffer(1,HighBuffer2,INDICATOR_DATA);
   SetIndexBuffer(2,LowBuffer3,INDICATOR_DATA);
   SetIndexBuffer(3,CloseBuffer4,INDICATOR_DATA);

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0);

   ArrayInitialize(OpenBuffer1,0);
   ArrayInitialize(HighBuffer2,0);
   ArrayInitialize(LowBuffer3,0);
   ArrayInitialize(CloseBuffer4,0);

//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---
//

   int to_date=iBarShift(Symbol(),Period(),input_datetime,false);

   int start_bar;
   int scan_bar;

   if(prev_calculated==0)
     {start_bar=0;}
   else
     {start_bar=prev_calculated-1;}

   for(scan_bar=start_bar;scan_bar<rates_total;scan_bar++)
     {
      if(scan_bar<Bars(Symbol(),Period())-to_date)
        {
         OpenBuffer1[scan_bar]=open[scan_bar];
         HighBuffer2[scan_bar]=high[scan_bar];
         LowBuffer3[scan_bar]=low[scan_bar];
         CloseBuffer4[scan_bar]=close[scan_bar];
        }
      else
        {
         OpenBuffer1[scan_bar]=0;
         HighBuffer2[scan_bar]=0;
         LowBuffer3[scan_bar]=0;
         CloseBuffer4[scan_bar]=0;
        }
     }
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+