Re: dos EOF in linux

EOF is ascii 26 (control-z). As long as you are reading the text file normally, the eof function should be sufficient. Note that it returns 1 if the next read will return an end of file or if the filehandle is not open.

perlfunc has the following Practical hint: you almost never need to use eof in Perl, because the input operators typically return undef when they run out of data, or if there was an error.

Comment on Re: dos EOF in linux

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Re: Re: dos EOF in linux by shemp (Deacon) on Jan 21, 2003 at 18:00 UTC
well, the problem is that the dos eof appears on its own line, so when im processing the lines, heres what happens: `... open INPUT_HANDLE .... or die ... while ( my $line = <INPUT_HANDLE> ) { chomp $line; last if my_eof_test($line, \*INPUT_HANDLE); process_line($line); } close(INPUT_HANDLE); ...` [download] i feel that i need this test because otherwise, the line that contains just the EOF will read properly, because there it is data, even though its the DOS EOF. because the read is true, we get in the while loop, and the line containing just EOF gets sent to process_line(). am i missing something here?	[reply] [d/l]
Re: Re: Re: dos EOF in linux by demerphq (Chancellor) on Jan 21, 2003 at 19:09 UTC
As far as I know this isnt an issue. But im a win32 user. :-) And may I point out that `while ( my $line = <INPUT_HANDLE>) {` [download] is not the same as (excepting the variable used) `while ( <INPUT_HANDLE> ) {` [download] I believe that should read `while ( defined ( my $line= <INPUT_HANDLE> ) ) {` [download] But personally I dont see the point. You shouldnt be afraid of using $_. --- demerphq my friends call me, usually because I'm late....	[reply] [d/l] [select]
Re: Re: Re: dos EOF in linux by Mr. Muskrat (Canon) on Jan 21, 2003 at 18:13 UTC
It shouldn't matter but if you are worried about processing the EOF marker, try this... `... open INPUT_HANDLE .... or die ... while ( my $line = <INPUT_HANDLE> ) { chomp $line; process_line($line); last if eof(INPUT_HANDLE); } close(INPUT_HANDLE); ...` [download]	[reply] [d/l]