Delphi: Alternative to using Reset/ReadLn for text file reading

Question

i want to process a text file line by line. In the olden days i loaded the file into a StringList:

slFile := TStringList.Create();
slFile.LoadFr         


        

Answer 1

What I do is use a TFileStream but I buffer the input into fairly large blocks (e.g. a few megabytes each) and read and process one block at a time. That way I don't have to load the whole file at once.

It works quite quickly that way, even for large files.

I do have a progress indicator. As I load each block, I increment it by the fraction of the file that has additionally been loaded.

Reading one line at a time, without something to do your buffering, is simply too slow for large files.