Instantly share code, notes, and snippets.
Last active Sep 12, 2017
Extract number of active authors in a git repository at the time of each commit
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/perl | |
my @a = `git log --use-mailmap --reverse --pretty=fuller --no-color --date=short --decorate=full | egrep "^(Author|CommitDate):"`; | |
use Time::Piece; | |
sub delta { | |
my ($from, $to) = @_; | |
my $f = Time::Piece->strptime($from, "%Y-%m-%d"); | |
my $t = Time::Piece->strptime($to, "%Y-%m-%d"); | |
my $diff = $t - $f; | |
return int($diff->days); | |
} | |
my $auth; | |
for(@a) { | |
chomp; | |
my $line = $_; | |
if(/^Author: *([^\<]*) \</) { | |
($auth)=($1); | |
$person{$auth}++; | |
} | |
elsif(/^CommitDate: (.*)/) { | |
my $d = $1; | |
$date{$auth}=$d; | |
my @active12; | |
my @active9; | |
my @active6; | |
my @active3; | |
my @activew; | |
foreach my $p (keys %person) { | |
my $de = delta($date{$p}, $d); | |
push @active12, $p if($de < 120); | |
push @active9, $p if($de < 90); | |
push @active6, $p if($de < 60); | |
push @active3, $p if($de < 30); | |
push @activew, $p if($de < 7); | |
} | |
if(delta("2010-01-01", $d) < 0) { | |
# counted, but don't output data from before 2010 | |
next; | |
} | |
#printf "$d (%d): %s\n", $#active+1, join(", ", sort @active); | |
printf "$d;%d;%d;%d;%d;%d\n", | |
$#active12+1, | |
$#active9+1, | |
$#active6+1, | |
$#active3+1, | |
$#activew+1; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment