How to Get the File Position (fgetpos Equivalent) in Go?

fgetpos Equivalent in Go: Accessing File Position

If you're familiar with stdio, you might be wondering about the fgetpos equivalent in Go. In this programming language, there's no direct method for retrieving the file offset or position. However, you can utilize the Seek() function to calculate the position.

Seek() Method

The Seek() function allows you to move the file pointer to a specific position in a file. By moving the pointer to a known position, you can effectively determine the file's current offset. Here's how you can do this:

offset, err := f.Seek(0, io.SeekCurrent)
if err != nil {
    // handle error
}

// offset now contains the current position of the file pointer

In this code, the Seek() method moves the file pointer 0 bytes from its current position. The io.SeekCurrent constant specifies that the movement is relative to the current position.

The offset variable will store the resulting position, which is the absolute position in the file. This is the Go equivalent of fgetpos, providing a way to obtain the file pointer's current location.

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