You can read a larger file with a bare READ than with READ/LINES. I've just tested reading a 50 meg file with READ, where with READ/LINES REBOL just seemed to hang. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 24, 2000 6:41 AM To: [EMAIL PROTECTED] Subject: [REBOL] Reading a file line by line Re:(2) I have been reading really large files using this setup; file: read/lines %filename foreach line file [do stuff] This seems to work well, however what is the limitation. What are the limitations on such a read, does the entire file get read into memory when issuing the read/lines command? Seems to work for me anyhow.... Francois On Thu, 24 Feb 2000 [EMAIL PROTECTED] wrote: > > > I need to read a BIG text file line by line but I > > don't know exactly how to do. > > > > As I understand the following will read the entire > > file to a list of lines and that is not what I want. > > > > lines: read/lines %textfile > > > > I want to read one line, process it before reading > > the next line and so on. > > > > Hi Peter: > > It's relatively easy to act on files larger than memory, one line at a time. > I believe BO at REBOL came up with the technique originally. I've adapted it > and use it for manipulating large log files on my internet servers. > > Here it is, enjoy: > > hugefile: open/direct/read/lines %huge_file > > while [ ( line: pick hugefile 1 ) <> none ] [ > ;;do stuff to each line;; ] > > close hugefile > > > --Ralph Roberts >
