Thanks, this elaborates on your analysis as johngg mentioned. I do not have fixed record seperators but I do have records of variable length/content so I rely on offset and size. I intend to use your example based on calculating each record's end offset: #!/usr/bin/perl -slw
use strict;
my $data = <<EOD;
record 1 is 20 bytesrecord 2 is 20 bytesrecord 3 is longer at 30 bytes
EOD
my $p = 0;
my @refs;
# endpos would be calculated based on recsize - this is simplified:
my @endpos=(20,40,70);
for (@endpos) {
push @refs, \substr $data, $p, $_ - $p;
$p = $_;
}
print '[',$$_,']' for @refs;
Hope I got that right. Niel
-
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.
|