如何获取文件的当前位置

Question

This question already has an answer here:

• fgetpos available in Go? Want to find File.Position 1 answer

I'm reading a file part by part and want to print the File Position (Byte Position). Example code snippet:

inFile *os.File
inFile, err := os.Open(myfile)
size := make([]byte, some_size)
content_size, err := inFile.Read(size)

Now this is done in a loop with various buffer sizes. So do I have to maintain a variable where I'll add up the content size obtained as return data from Read?

Instead, can I get the position (Bytes) of the file pointer after all the Read operations are done? How can I get this current position of the file?

</div>

Answer 1

The function File.Seek returns the resulting offset in the file. To get the current offset, seek zero bytes from the current position:

 offset, err := f.Seek(0, os.SEEK_CUR)