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Toh4iem9
109 lines
4.4 KiB
Plaintext
109 lines
4.4 KiB
Plaintext
//+------------------------------------------------------------------+
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//| util_ExportCandlesToCSV.mq5 |
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//| Copyright 2025, xxxxxxxx |
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//| |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2025, xxxxxxxx"
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#property link ""
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#property version "1.01" // Added comments and minor fixes
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#property script_show_inputs
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#property description "Exports historical candle data for the current chart to a CSV file."
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#property description "The file is saved in the terminal's MQL5/Files/ folder."
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//--- Input Parameters ---
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input int InpCandlesToExport = 1000; // Number of most recent candles to export
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input string InpFileName = ""; // CSV file name. If empty, it will be auto-generated.
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input string InpDelimiter = ","; // Delimiter for the CSV file (e.g., comma or semicolon)
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//+------------------------------------------------------------------+
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//| Script program start function. |
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//| This is the main entry point for the script. |
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//+------------------------------------------------------------------+
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void OnStart()
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{
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//--- 1. Validate Input Parameters ---
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if(InpCandlesToExport <= 0)
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{
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Print("Error: Number of candles to export must be greater than 0.");
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return;
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}
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//--- 2. Prepare File Name ---
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string file_name = InpFileName;
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// Auto-generate a descriptive file name if the user left it empty
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if(file_name == "")
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{
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file_name = StringFormat("%s_%s_Candles.csv", _Symbol, EnumToString(_Period));
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}
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// Ensure the file name ends with .csv
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if(StringFind(file_name, ".csv", StringLen(file_name) - 4) == -1)
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{
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file_name = file_name + ".csv";
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}
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PrintFormat("Starting export of %d candles for %s on %s...", InpCandlesToExport, _Symbol, EnumToString(_Period));
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PrintFormat("Target file: MQL5\\Files\\%s", file_name);
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//--- 3. Open File for Writing ---
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ResetLastError();
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// FIX: Use StringGetCharacter for safety, as InpDelimiter is a string
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char separator = (char)StringGetCharacter(InpDelimiter, 0);
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int file_handle = FileOpen(file_name, FILE_WRITE | FILE_CSV | FILE_ANSI, separator);
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if(file_handle == INVALID_HANDLE)
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{
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PrintFormat("Error opening file '%s'. Error code: %d", file_name, GetLastError());
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return;
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}
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//--- 4. Copy Historical Data ---
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MqlRates rates[]; // Array to store candle data
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// Set array as non-timeseries to get data in chronological order (oldest first)
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ArraySetAsSeries(rates, false);
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// Request rate data from the terminal
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int copied_count = CopyRates(_Symbol, _Period, 0, InpCandlesToExport, rates);
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if(copied_count <= 0)
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{
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PrintFormat("Error: Could not copy any candle data. Error code: %d", GetLastError());
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FileClose(file_handle);
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return;
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}
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if(copied_count < InpCandlesToExport)
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{
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PrintFormat("Warning: Could only copy %d candles, less than the requested %d.", copied_count, InpCandlesToExport);
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}
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//--- 5. Write Data to CSV File ---
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// Write the header row first
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FileWrite(file_handle, "time", "open", "high", "low", "close", "tick_volume", "real_volume", "spread");
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// Loop through the copied rates and write each candle to a new line
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for(int i = 0; i < copied_count; i++)
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{
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// Convert Unix timestamp to a human-readable string for better readability in the CSV
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string time_str = TimeToString(rates[i].time, TIME_DATE | TIME_MINUTES | TIME_SECONDS);
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// Write one line to the CSV file
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FileWrite(file_handle,
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time_str,
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rates[i].open,
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rates[i].high,
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rates[i].low,
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rates[i].close,
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rates[i].tick_volume,
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rates[i].real_volume,
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rates[i].spread);
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}
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//--- 6. Finalize and Clean Up ---
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FileClose(file_handle);
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PrintFormat("Successfully exported %d candles to '%s'.", copied_count, file_name);
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Print("You can find the file in the terminal's Data Folder under MQL5/Files/.");
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}
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//+------------------------------------------------------------------+
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//+------------------------------------------------------------------+
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