CPAN::Search::Lite::Info - extract information from CPAN indices

This module extracts information from the CPAN indices $CPAN/indices/ls-lR.gz, $CPAN/modules/03modlist.data.gz, $CPAN/modules/02packages.details.txt.gz, and $CPAN/authors/01mailrc.txt.gz. If a local CPAN mirror isn't present, it will use the files fetched from a remote CPAN mirror under CPAN by CPAN::Search::Lite::Index.

A CPAN::Search::Lite::Info object is created with

    my $info = CPAN::Search::Lite::Info(CPAN => $cpan);

where $cpan specifies the top-level CPAN directory underneath which the index files are found. Calling

    $info->fetch_info();

will result in the object being populated with 3 hash references:

* $info->{dists}

This contains information on distributions. Keys of this hash reference are the distribution names, with the associated value being a hash reference with keys of

version - the version of the CPAN file

filename - the CPAN filename

cpanid - the CPAN author id

description - a description, if available

size - the size of the file

date - the last modified date (YYYY/MM/DD) of the file

md5 - the CPAN md5 checksum of the file

modules - specifies the modules present in the distribution:

  for my $module (keys %{$info->{$distname}->{modules}}) {
    print "Module: $module\n";
  }

chapterid - specifies the chapterid and the subchapter for the distribution:

  for my $id (keys %{$info->{$distname}->{chapterid}}) {
    print "For chapterid $id\n";
    for my $sc (keys %{$info->{$distname}->{chapterid}->{$id}}) {
      print "   Subchapter: $sc\n";
    }
  }

requires - a hash reference whose keys are the names of prerequisite modules required for the package and whose values are the associated module versions. This information comes from the META.yml file processed in CPAN::Search::Lite::Extract.

* $info->{mods}

This contains information on modules. Keys of this hash reference are the module names, with the associated values being a hash reference with keys of

dist - the distribution name containing the module

version - the version

description - a description, if available

chapterid - the chapter id of the module, if present

dslip - a 5 character string specifying the dslip (development, support, language, interface, public licence) information.

* $info->{auths}

This contains information on CPAN authors. Keys of this hash reference are the CPAN ids, with the associated value being a hash reference with keys of

fullname - the author's full name

email - the author's email address

CPAN::Search::Lite::Index