CPAN::Dependency Analyzes CPAN modules and generates their dependency tree
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CPAN::Dependency Ranking & Summary

CPAN::Dependency Tags

Perl module perl dependency CPAN CPAN modules dependency tree

CPAN::Dependency Description

Analyzes CPAN modules and generates their dependency tree CPAN::Dependency is a Perl module that can process a set of distributions, up to the whole CPAN, and extract the dependency relations between these distributions. Alternatively, it can load the prerequisites information from a CPANTS database.It also calculates a score for each distribution based on the number of times it appears in the prerequisites of other distributions. The algorithm is described in more details in "SCORE CALCULATION".CPAN::Dependency stores the data in an internal structure which can be saved and loaded using save_deps_tree() and load_deps_tree(). The structure looks like this: DEPS_TREE = { DIST => { author => STRING, cpanid => STRING, score => NUMBER, prereqs => { DIST => BOOLEAN, ... }, used_by => { DIST => BOOLEAN, ... }, }, .... }With each distribution name DIST are associated the following fields: * author is a string which contains the name of the author who wrote (or last released) this distribution; * cpanid is a string which contains the CPAN ID of the author who wrote (or last released) this distribution; * score is a number which represents the score of the distribution; * prereqs is a hashref which represents the prerequisites of the distribution; each key is a prerequisite name and its value is a boolean which is true when the distribution and the prerequisite are not from the same author; * used_by is a hashref which represents the distributions which use this particular distribution; each key is a distribution name and its value is a boolean which is true when both distributions are not from the same author.SYNOPSISFind and print the 10 most required CPAN distributions by stand-alone processing. use CPAN::Dependency; my $cpandep = CPAN::Dependency->new(process => ALL_CPAN); $cpandep->run; # this may take some time.. $cpandep->calculate_score; my %score = $cpandep->score_by_dists; my @dists = sort { $score{$b} $score{$a} } keys %score; print "Top 10 modules "; for my $dist (@dists) { printf "] %s ", $score{$dist}, $dist; }Same thing, but this time by loading the prerequisites information from the CPANTS database. use CPAN::Dependency; my $cpandep = new CPAN::Dependency; $cpandep->load_cpants_db(file => 'cpants.db'); $cpandep->calculate_score; my %score = $cpandep->score_by_dists; my @dists = sort { $score{$b} $score{$a} } keys %score; print "Top 10 modules "; for my $dist (@dists) { printf "] %s ", $score{$dist}, $dist; } Requirements: · Perl

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