how to retrieve some specific set of lines from a file and store it in a char buffer.

vigneshinbox · 04-02-2009, 12:49 AM

Plz tel me how to retrieve some specific set of lines from a file and store it in a char buffer.I am seperating each record by ":"

Code:

22:abc:4
hardware:cd:xyz:2
hardware:eth:abc:6
hardware:mouse:xyz:3
hardware:ram:xyz:1

23:cde:3
hardware:cd:xyz:2
hardware:eth:abc:6
hardware:ram:xyz:1

25:efg:2
hardware:cd:xyz:2
hardware:eth:abc:6

plz tel me how to retrieve

23:cde:3
hardware:cd:xyz:2
hardware:eth:abc:6
hardware:ram:xyz:1

from the file and store it in a buffer using C.Kindly help me in this

vkmgeek · 04-02-2009, 12:58 AM

If you want to do it in C... There is no option other than writing a prog which does file operation like fopen and then fread...
Then you compare a string which you want, starting from that offset, store it in buff

vigneshinbox · 04-02-2009, 01:05 AM

hey thanx for ur kind response dude.My question may be so stupid,but still... even when i tried
for the solution in net i came across the word OFFSET.what it is exactly?? and can u tell me which function should i use to traverse the file and compare it.

vigneshinbox · 04-02-2009, 01:16 AM

Quote:

Originally Posted by vkmgeek

If you want to do it in C... There is no option other than writing a prog which does file operation like fopen and then fread...
Then you compare a string which you want, starting from that offset, store it in buff

Hey thanx for ur kind response dude.My question may be so stupid,but still... even when i tried
for the solution in net i came across the word OFFSET.what it is exactly?? and can u tell me which function should i use to traverse the file and compare it.