The issue is that if I want to write a CPAN module that requires the ability to decompress .Z data I need to either have a wrapper over the external binary /usr/bin/uncompress or to include this in a perl library directly. I have a working wrapper but want something that doesn't have the overhead of forking out to /usr/bin/uncompress millions of times.

Hence: Compress::Zlib::LZW. As is, there is no code on CPAN for handling the .Z data format. Compress::Zlib handles the 'deflate' and 'gzip' formats but doesn't handle the 'compress' format. Its that one that I'm targetting. I already wrote something that sends its output to a file handle but if I want to be 5.005_03 safe then I figured I'd have to return a proper scalar instead of PerlIO tricks.

Now as to your actual answer - can you reword "Also, as far as I know, perl itself gets memory from system each time twice as in previous memory allocation, and I find this strategy much worse than allocating by some reasonable chunks." this? I think you're speaking from more context than I have right now and I need you to be a bit more explicit.

In reply to Re: Re: Growing strings, avoiding copying and fragmentation? by diotalevi
in thread Growing strings, avoiding copying and fragmentation? by diotalevi

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.