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#!/usr/bin/perl
use strict;
use warnings;
use GD::Graph::linespoints;
use List::Util qw(max);
use POSIX qw(log10 ceil);
open my $c, '-|', qw(git log --pretty=format:%ae|%ci)
or die "Can't run git log: $!";
my %email;
my %month;
while (<$c>) {
chomp;
my ($email, $date) = split /\|/;
$email{$email}++;
$month{substr $date, 0, 7}++;
}
close $c or die $!;
{
my $max = max values %month;
my $round = 10 ** int(log10 $max);
$max = $round * (1 + int($max / $round));
my $label_skip = int .5 + (values %month) / 20;
my $g = GD::Graph::linespoints->new(600, 400);
$g->set(
x_label => 'Month',
y_label => 'Number of commits',
title => 'Commits to Rakudo per Month',
x_label_skip => $label_skip,
x_labels_vertical => 1,
y_max_value => $max,
y_min_value => 0,
) or die $g->error;
my @data;
my $c = 0;
for (sort keys %month){
push @{$data[0]}, $_;
push @{$data[1]}, $month{$_};
}
my $filename = $ARGV[0] || 'commits.png';
open my $img, '>', $filename
or die "Can't open `$filename' for writing: $!";
binmode $img;
print $img $g->plot(\@data)->png;
close $img;
}
{
my $top = 15;
my $c = 0;
print "Top $top commit authors\n";
for (sort { $email{$b} <=> $email{$a} } keys %email) {
$c++;
printf "%-2d % 5d %s\n", $c, $email{$_}, $_;
last if $c >= $top;
}
}
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