//+------------------------------------------------------------------+
//| Demo_FileIsLineEnding.mq5 |
//| Copyright 2014, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2014, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
#property version "1.00"
//--- parameters for data reading
input string InpFileName="RSI.csv"; // file name
input string InpDirectoryName="Data"; // directory name
//--- overbought variables
int ovb_size=0;
datetime ovb_time[];
//--- oversold variables
int ovs_size=0;
datetime ovs_time[];
//+------------------------------------------------------------------+
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
//--- open the file
ResetLastError();
int file_handle=FileOpen(InpDirectoryName+"//"+InpFileName,FILE_READ|FILE_CSV|FILE_ANSI,"\t");
if(file_handle!=INVALID_HANDLE)
{
PrintFormat("%s file is available for reading",InpFileName);
PrintFormat("File path: %s\\Files\\",TerminalInfoString(TERMINAL_DATA_PATH));
double value;
//--- read data from file
while(!FileIsEnding(file_handle))
{
//--- read the first value in the string
value=FileReadNumber(file_handle);
//--- read to different arrays according to the function result
if(value>=70)
ReadData(file_handle,ovb_time,ovb_size);
else
ReadData(file_handle,ovs_time,ovs_size);
}
//--- close the file
FileClose(file_handle);
PrintFormat("Data is read, %s file is closed",InpFileName);
//--- print data
PrintFormat("Overbought=%d",ovb_size);
for(int i=0; i<ovb_size; i++) Print(i," time=",TimeToString(ovb_time[i]));
PrintFormat("Oversold=%d",ovs_size);
for(int i=0; i<ovs_size; i++) Print(i," time=",TimeToString(ovs_time[i]));
}
else
{
PrintFormat("Failed to open %s file, Error code = %d",InpFileName,GetLastError());
return;
}
//---
}
//+------------------------------------------------------------------+
//| Read the file's string data |
//+------------------------------------------------------------------+
void ReadData(const int file_handle,datetime &arr[],int &size)
{
bool flag=false;
string str="";
//--- read till the end of the string or of the file is reached
while(!FileIsLineEnding(file_handle) && !FileIsEnding(file_handle))
{
//--- shift the position by reading the number
if(flag)
FileReadNumber(file_handle);
size++;
//--- increase the array size if necessary
if(size>ArraySize(arr)) ArrayResize(arr,size,100);
//--- read date
arr[size-1]=FileReadDatetime(file_handle);
//--- add to string
str+=" "+TimeToString(arr[size-1]);
//--- slip past the first iteration
flag=true;
}
Print(str);
} |