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scripts/get_maintainer.pl: add --remove-duplicates
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Allow control over the elimination of duplicate email names and addresses

--remove-duplicates will use the first email name or address presented
--noremove-duplicates will emit all names and addresses

--remove-duplicates is enabled by default

For instance:

$ ./scripts/get_maintainer.pl -f drivers/char/tty_ioctl.c
Greg Kroah-Hartman <[email protected]>
Alan Cox <[email protected]>
Mike Frysinger <[email protected]>
Alexey Dobriyan <[email protected]>
[email protected]

$ ./scripts/get_maintainer.pl -f --noremove-duplicates drivers/char/tty_ioctl.c
Greg Kroah-Hartman <[email protected]>
Alan Cox <[email protected]>
Alan Cox <[email protected]>
Alan Cox <[email protected]>
Mike Frysinger <[email protected]>
Alexey Dobriyan <[email protected]>
[email protected]

Using --remove-duplicates could eliminate multiple maintainers that
share the same name but not the same email address.

Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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@JoePerches @torvalds
JoePerches authored and torvalds committed Sep 22, 2009
1 parent 4249831 commit 11ecf53
Showing 1 changed file with 55 additions and 53 deletions.
108 changes: 55 additions & 53 deletions scripts/get_maintainer.pl
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
my $email_git_min_percent = 5;
my $email_git_since = "1-year-ago";
my $email_git_blame = 0;
my $email_remove_duplicates = 1;
my $output_multiline = 1;
my $output_separator = ", ";
my $scm = 0;
Expand Down Expand Up @@ -71,6 +72,7 @@
'git-min-percent=i' => \$email_git_min_percent,
'git-since=s' => \$email_git_since,
'git-blame!' => \$email_git_blame,
'remove-duplicates!' => \$email_remove_duplicates,
'm!' => \$email_maintainer,
'n!' => \$email_usename,
'l!' => \$email_list,
Expand Down Expand Up @@ -158,32 +160,28 @@

my %mailmap;

open(MAILMAP, "<${lk_path}.mailmap") || warn "$P: Can't open .mailmap\n";
while (<MAILMAP>) {
my $line = $_;
if ($email_remove_duplicates) {
open(MAILMAP, "<${lk_path}.mailmap") || warn "$P: Can't open .mailmap\n";
while (<MAILMAP>) {
my $line = $_;

next if ($line =~ m/^\s*#/);
next if ($line =~ m/^\s*$/);
next if ($line =~ m/^\s*#/);
next if ($line =~ m/^\s*$/);

my ($name, $address) = parse_email($line);
$line = format_email($name, $address);
my ($name, $address) = parse_email($line);
$line = format_email($name, $address);

next if ($line =~ m/^\s*$/);
next if ($line =~ m/^\s*$/);

if (exists($mailmap{$name})) {
my $obj = $mailmap{$name};
push(@$obj, $address);
} else {
my @arr = ($address);
$mailmap{$name} = \@arr;
}
}
close(MAILMAP);

foreach my $name (sort {$mailmap{$a} <=> $mailmap{$b}} keys %mailmap) {
my $obj = $mailmap{$name};
foreach my $address (@$obj) {
if (exists($mailmap{$name})) {
my $obj = $mailmap{$name};
push(@$obj, $address);
} else {
my @arr = ($address);
$mailmap{$name} = \@arr;
}
}
close(MAILMAP);
}

## use the filenames on the command line or find the filenames in the patchfiles
Expand Down Expand Up @@ -373,6 +371,7 @@ sub usage {
--n => include name 'Full Name <addr\@domain.tld>'
--l => include list(s) if any
--s => include subscriber only list(s) if any
--remove-duplicates => minimize duplicate email names/addresses
--scm => print SCM tree(s) if any
--status => print status if any
--subsystem => print subsystem name if any
Expand All @@ -389,7 +388,7 @@ sub usage {
--help => show this help information
Default options:
[--email --git --m --n --l --multiline --pattern-depth=0]
[--email --git --m --n --l --multiline --pattern-depth=0 --remove-duplicates]
Notes:
Using "-f directory" may give unexpected results:
Expand Down Expand Up @@ -438,12 +437,12 @@ sub parse_email {
my $name = "";
my $address = "";

if ($formatted_email =~ /^([^<]+)<(.*\@.*)>.*$/) {
if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) {
$name = $1;
$address = $2;
} elsif ($formatted_email =~ /^\s*<(.*\@.*)>.*$/) {
} elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) {
$address = $1;
} elsif ($formatted_email =~ /^\s*(.*\@.*)$/) {
} elsif ($formatted_email =~ /^(.+\@\S*)$/) {
$address = $1;
}

Expand Down Expand Up @@ -542,14 +541,16 @@ sub add_categories {
}
}

sub email_address_inuse {
my ($test_address) = @_;
my %email_hash_name;
my %email_hash_address;

foreach my $line (@email_to) {
my ($name, $address) = parse_email($line);
sub email_inuse {
my ($name, $address) = @_;

return 1 if (($name eq "") && ($address eq ""));
return 1 if (($name ne "") && exists($email_hash_name{$name}));
return 1 if (($address ne "") && exists($email_hash_address{$address}));

return 1 if ($address eq $test_address);
}
return 0;
}

Expand All @@ -558,8 +559,12 @@ sub push_email_address {

my ($name, $address) = parse_email($line);

if (!email_address_inuse($address)) {
if (!$email_remove_duplicates) {
push(@email_to, format_email($name, $address));
} elsif (!email_inuse($name, $address)) {
push(@email_to, format_email($name, $address));
$email_hash_name{$name}++;
$email_hash_address{$address}++;
}
}

Expand Down Expand Up @@ -600,6 +605,9 @@ sub mailmap {
my ($name, $address) = parse_email($line);
if (!exists($hash{$name})) {
$hash{$name} = $address;
} elsif ($address ne $hash{$name}) {
$address = $hash{$name};
$line = format_email($name, $address);
}
if (exists($mailmap{$name})) {
my $obj = $mailmap{$name};
Expand Down Expand Up @@ -652,31 +660,23 @@ sub recent_git_signoffs {

$total_sign_offs = @lines;

@lines = mailmap(@lines);
if ($email_remove_duplicates) {
@lines = mailmap(@lines);
}

@lines = sort(@lines);

# uniq -c
foreach my $line (@lines) {
$hash{$line}++;
}
$hash{$_}++ for @lines;

# sort -rn
@lines = ();
foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
push(@lines,"$hash{$line} $line");
}

foreach my $line (@lines) {
if ($line =~ m/([0-9]+)\s+(.*)/) {
my $sign_offs = $1;
$line = $2;
$count++;
if ($sign_offs < $email_git_min_signatures ||
$count > $email_git_max_maintainers ||
$sign_offs * 100 / $total_sign_offs < $email_git_min_percent) {
last;
}
push_email_address($line);
}
my $sign_offs = $hash{$line};
$count++;
last if ($sign_offs < $email_git_min_signatures ||
$count > $email_git_max_maintainers ||
$sign_offs * 100 / $total_sign_offs < $email_git_min_percent);
push_email_address($line);
}
}

Expand Down Expand Up @@ -743,7 +743,9 @@ sub git_assign_blame {

$total_sign_offs += @lines;

@lines = mailmap(@lines);
if ($email_remove_duplicates) {
@lines = mailmap(@lines);
}

$hash{$_}++ for @lines;
}
Expand Down

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