In that case, I'd check the end of the buffer for digits, and if there are any, trim them off and save them to prepend to the next buffer that you read in. But you don't want to do that if it's the final 0 in the file, so I have some if statements in here. There's probably a more elegant way to do some of this, but I think this will handle it correctly:
#!/usr/bin/env perl
use 5.010; use strict; use warnings;
my $l; # chunk of a line
my $tiny_buffer = 8; # tiny buffer for testing
my $leftover = ''; # leftover, possibly partial number at end of buf
+fer
while ( read DATA, $l, $tiny_buffer ) {
$l = $leftover . $l;
say " ;$l;";
$leftover = '';
if( $l =~ s/(\d+)$//g ){
if( $1 == 0 ){
$l .= '0';
$leftover = '';
} else {
$leftover = $1;
}
}
for (split ' ', $l) {
if ( $_ == 0 ) {
say 'Reached a zero';
} else {
say "; $_ ;"; # process a number
}
}
}
__DATA__
1 2 3 4 5 6 7 8 99 1 2 3 4 5 6 7 8 9 0
1 22 3 4 5 6 7 8 99 1 2 3 4 5 6 77 8 9 0
Aaron B.
Available for small or large Perl jobs and *nix system administration; see my home node.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|