is 0 bytes read EOF ?

[abachus]

Hi all,

I have a quick question :
When reading from a handle, with say sysread(), if the call returns 0 bytes read, is this a reliable indication that the handle pointer (for want of better terminology) is at EOF ?

many thanks,

Isaac.

[blue_cowdawg]

When reading from a handle, with say sysread(), if the call returns 0 bytes read, is this a reliable indication that the handle pointer (for want of better terminology) is at EOF ?

This from perldoc -f sysread "There is no syseof() function, which is ok, since eof() doesn’t work very well on device files (like ttys) anyway. Use sys- read() and check for a return value for 0 to decide whether you’re done. "

Does this answer the question?

This by the way must be my "evil" post because it is the 666^th post! BWAHAHAHAHAAHAHAHA!!!

[friedo]

As the docs indicate, a return of zero means EOF, and a return of undef means error.

[GrandFather]

The documentation for sysread says that it returns 0 on EOF.

[abachus]

Thanks monks, I just wanted to be sure, i'm putting together a bit of code with select(), i will post here when help is needed.