Reading a Text File Line by Line with MQL5 FileIsEnding

Summary

This MQL5 example demonstrates reading a text file from the terminal’s local files area and printing its contents one string at a time. It opens a named file in a specified subdirectory, using a selectable text encoding, then repeatedly calls the string-reading function until the end-of-file check indicates there is no next string to read. The file handle is closed after reading; if opening fails, the script prints the terminal error code.

The explanation notes that the end check itself attempts to read the next string and reports whether one is available. This is a programming example for handling input data in a trading terminal, rather than a trading strategy or market analysis. It does not discuss file validation, large-file performance, or how the read data might be used in a trading system.

Key ideas

• The example reads text from a file in the terminal’s local data directory.
• It loops through strings until the end-of-file check indicates no further string is available.
• The script closes a successfully opened file and reports an error code if opening fails.
• The example does not explain how the file contents could support a trading analysis.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.