Need help with OSBREAD code??? (AREV Specific)
At 12 JAN 1998 03:01:25PM Mick wrote:
I'm trying to read a text file into Arev 3.11, and I understand the difference between OSREAD and OSBREAD, but I'm having a hard time with the syntax or something. The file I'm trying to read in is comma delimited, and is about 220k. So I need to OSBREAD in small chunks of it, process that data, and write back only a portion of it leaving say 160k? Then repeat? Since Arev cant handle bigger than 64K chunks, how do I read the dos file to know how many times to go throught this process? The file could be anywhere from 50k to 400k. Does anybody have examples of their OSBREAD? I read the book about OSBREAD, and it didnt help much. I dont have a COMPUSERVE account, so I cant check the libraries. Thanks to anyone who can help me on this……
At 12 JAN 1998 05:21PM Don Bakke wrote:
Mick,
Check out this post from some abbreviated code on using OSBREAD. I pulled it out of a routine that does exactly what you are trying to do, but there may have been too much editting on my part. If this isn't enough then let me know and I'll post the entire code.
At 13 JAN 1998 11:47AM [email protected] wrote:
OSBREAD ITF.REC FROM I.FILE AT ITF.POS LENGTH REC.LEN
1. data is read into variable ITF.REC
2. you must OSOPEN dos file to I.FILE first
3. position in dos file is set by ITF.POS (starts at 0)
4. length is set by REC.LEN
If you cannot determine the size of the file, keep on reading until
the data read from the file is blank … then, you know you're at the end.
At 13 JAN 1998 05:05PM Mick wrote:
Thanks guys…. with your help I think I've got it figured out…..