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scripts/get_maintainer.pl: fix --non with --git-blame and cleanups
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Fix email matching without name --n and --git-blame
   Using --non and --git-blame caused maintainer signature
   matching to fail.  Fixed that by adding 3rd argument to
   sub format_email to control show/hide name portion of address
Slurp -f file instead of reading line-by-line for K: pattern matching.
   Suggested by Wolfram Sang as more efficient
Refactor git command execution
   Break into 2 functions, execute/analyze
   Share code between --git and --git-blame
   Don't warn multiple times when git isn't installed
Improve stats reporting
   --git-min-percent and -- rolestats now count the total number of commits
   for either the period of --git-since or if using --git-blame the commits
   used by the current file and calculate commit % as
      # of commits signed / total commits * 100
Code style cleaning
   Use consistent sub foo { my (args...) = @_;

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Greg KH <greg@kroah.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Joe Perches authored and Linus Torvalds committed Dec 15, 2009
1 parent 3c7385b commit a8af243
Showing 1 changed file with 104 additions and 94 deletions.
198 changes: 104 additions & 94 deletions scripts/get_maintainer.pl
View file
Original file line number Diff line number Diff line change
Expand Up @@ -182,7 +182,7 @@
next if ($line =~ m/^\s*$/);

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

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

Expand Down Expand Up @@ -214,12 +214,10 @@
push(@files, $file);
if (-f $file && $keywords) {
open(FILE, "<$file") or die "$P: Can't open ${file}\n";
while (<FILE>) {
my $patch_line = $_;
foreach my $line (keys %keyword_hash) {
if ($patch_line =~ m/^.*$keyword_hash{$line}/x) {
push(@keyword_tvi, $line);
}
my $text = do { local($/) ; <FILE> };
foreach my $line (keys %keyword_hash) {
if ($text =~ m/$keyword_hash{$line}/x) {
push(@keyword_tvi, $line);
}
}
close(FILE);
Expand Down Expand Up @@ -311,7 +309,7 @@
}

if ($email && $email_git) {
recent_git_signoffs($file);
git_file_signoffs($file);
}

if ($email && $email_git_blame) {
Expand All @@ -331,7 +329,7 @@
if ($chief =~ m/^(.*):(.*)/) {
my $email_address;

$email_address = format_email($1, $2);
$email_address = format_email($1, $2, $email_usename);
if ($email_git_penguin_chiefs) {
push(@email_to, [$email_address, 'chief penguin']);
} else {
Expand Down Expand Up @@ -509,7 +507,7 @@ sub parse_email {
}

sub format_email {
my ($name, $address) = @_;
my ($name, $address, $usename) = @_;

my $formatted_email;

Expand All @@ -522,11 +520,11 @@ sub format_email {
$name = "\"$name\"";
}

if ($email_usename) {
if ($usename) {
if ("$name" eq "") {
$formatted_email = "$address";
} else {
$formatted_email = "$name <${address}>";
$formatted_email = "$name <$address>";
}
} else {
$formatted_email = $address;
Expand Down Expand Up @@ -671,7 +669,7 @@ sub add_categories {
if ($tv =~ m/^(\C):\s*(.*)/) {
if ($1 eq "P") {
$name = $2;
$pvalue = format_email($name, $address);
$pvalue = format_email($name, $address, $email_usename);
}
}
}
Expand Down Expand Up @@ -714,9 +712,9 @@ sub push_email_address {
}

if (!$email_remove_duplicates) {
push(@email_to, [format_email($name, $address), $role]);
push(@email_to, [format_email($name, $address, $email_usename), $role]);
} elsif (!email_inuse($name, $address)) {
push(@email_to, [format_email($name, $address), $role]);
push(@email_to, [format_email($name, $address, $email_usename), $role]);
$email_hash_name{$name}++;
$email_hash_address{$address}++;
}
Expand Down Expand Up @@ -747,7 +745,7 @@ sub add_role {
my ($line, $role) = @_;

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

foreach my $entry (@email_to) {
if ($email_remove_duplicates) {
Expand Down Expand Up @@ -784,7 +782,7 @@ sub which {
}

sub mailmap {
my @lines = @_;
my (@lines) = @_;
my %hash;

foreach my $line (@lines) {
Expand All @@ -793,14 +791,14 @@ sub mailmap {
$hash{$name} = $address;
} elsif ($address ne $hash{$name}) {
$address = $hash{$name};
$line = format_email($name, $address);
$line = format_email($name, $address, $email_usename);
}
if (exists($mailmap{$name})) {
my $obj = $mailmap{$name};
foreach my $map_address (@$obj) {
if (($map_address eq $address) &&
($map_address ne $hash{$name})) {
$line = format_email($name, $hash{$name});
$line = format_email($name, $hash{$name}, $email_usename);
}
}
}
Expand All @@ -809,33 +807,44 @@ sub mailmap {
return @lines;
}

sub recent_git_signoffs {
my ($file) = @_;

my $sign_offs = "";
my $cmd = "";
my $output = "";
my $count = 0;
my @lines = ();
my %hash;
my $total_sign_offs;

my $printed_nogit = 0;
my $printed_nogitdir = 0;
sub has_git {
if (which("git") eq "") {
warn("$P: git not found. Add --nogit to options?\n");
return;
if (!$printed_nogit) {
warn("$P: git not found. Add --nogit to options?\n");
$printed_nogit = 1;
}
return 0;
}
if (!(-d ".git")) {
warn("$P: .git directory not found. Use a git repository for better results.\n");
warn("$P: perhaps 'git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git'\n");
return;
if (!$printed_nogitdir) {
warn(".git directory not found. "
. "Using a git repository produces better results.\n");
warn("Try Linus Torvalds' latest git repository using:\n");
warn("git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git\n");
$printed_nogitdir = 1;
}
return 0;
}

$cmd = "git log --since=${email_git_since} -- ${file}";
return 1;
}

sub git_find_signers {
my ($cmd) = @_;

my $output;
my @lines = ();
my $commits;

return (0, @lines) if (!has_git());

$output = `${cmd}`;
$output =~ s/^\s*//gm;

@lines = split("\n", $output);
$commits = grep(/^commit [0-9a-f]{40,40}/, @lines); # of commits

@lines = grep(/^[-_ a-z]+by:.*\@.*$/i, @lines);
if (!$email_git_penguin_chiefs) {
Expand All @@ -844,10 +853,28 @@ sub recent_git_signoffs {
# cut -f2- -d":"
s/.*:\s*(.+)\s*/$1/ for (@lines);

$total_sign_offs = @lines;
## Reformat email addresses (with names) to avoid badly written signatures

foreach my $line (@lines) {
my ($name, $address) = parse_email($line);
$line = format_email($name, $address);
$line = format_email($name, $address, 1);
}

return ($commits, @lines);
}

sub git_assign_signers {
my ($role, $divisor, @lines) = @_;

my %hash;
my $count = 0;

return if (!has_git());
return if (@lines <= 0);

if ($divisor <= 0) {
warn("Bad divisor in git_assign_signers: $divisor\n");
$divisor = 1;
}

if ($email_remove_duplicates) {
Expand All @@ -862,27 +889,43 @@ sub recent_git_signoffs {
# sort -rn
foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
my $sign_offs = $hash{$line};
my $role;
my $percent = $sign_offs * 100 / $divisor;

$percent = 100 if ($percent > 100);
$count++;
last if ($sign_offs < $email_git_min_signatures ||
$count > $email_git_max_maintainers ||
$sign_offs * 100 / $total_sign_offs < $email_git_min_percent);
$percent < $email_git_min_percent);
push_email_address($line, '');
$role = "git-signer";
if ($output_rolestats) {
my $percent = sprintf("%.0f", $sign_offs * 100 / $total_sign_offs);
$role = "$role:$sign_offs/$total_sign_offs=$percent%";
my $fmt_percent = sprintf("%.0f", $percent);
add_role($line, "$role:$sign_offs/$divisor=$fmt_percent%");
} else {
add_role($line, $role);
}
add_role($line, $role);
}
}

sub git_file_signoffs {
my ($file) = @_;

my @signers = ();
my $total_signers;

return if (!has_git());

($total_signers, @signers) =
git_find_signers("git log --since=$email_git_since -- $file");
git_assign_signers("git_signer", $total_signers, @signers);
}

sub save_commits {
my ($cmd, @commits) = @_;
my $output;
my @lines = ();

return (@lines) if (!has_git());

$output = `${cmd}`;

@lines = split("\n", $output);
Expand All @@ -897,13 +940,10 @@ sub save_commits {
sub git_assign_blame {
my ($file) = @_;

my @lines = ();
my @commits = ();
my $cmd;
my $output;
my %hash;
my $total_sign_offs;
my $count;
my @commits = ();
my @signers = ();
my $total_commits;

if (@range) {
foreach my $file_range_diff (@range) {
Expand All @@ -922,65 +962,35 @@ sub git_assign_blame {
}
}

$total_sign_offs = 0;
@commits = uniq(@commits);
foreach my $commit (@commits) {
$cmd = "git log -1 ${commit}";

$output = `${cmd}`;
$output =~ s/^\s*//gm;
@lines = split("\n", $output);

@lines = grep(/^[-_ a-z]+by:.*\@.*$/i, @lines);
if (!$email_git_penguin_chiefs) {
@lines = grep(!/${penguin_chiefs}/i, @lines);
}

# cut -f2- -d":"
s/.*:\s*(.+)\s*/$1/ for (@lines);

$total_sign_offs += @lines;
$total_commits = @commits;

if ($email_remove_duplicates) {
@lines = mailmap(@lines);
}
foreach my $commit (@commits) {
my $commit_count;
my @commit_signers = ();

$hash{$_}++ for @lines;
($commit_count, @commit_signers) =
git_find_signers("git log -1 $commit");
@signers = (@signers, @commit_signers);
}

$count = 0;
foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
my $sign_offs = $hash{$line};
my $role;

$count++;
last if ($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, '');
if ($from_filename) {
$role = "commits";
} else {
$role = "modified commits";
}
if ($output_rolestats) {
my $percent = sprintf("%.0f", $sign_offs * 100 / $total_sign_offs);
$role = "$role:$sign_offs/$total_sign_offs=$percent%";
}
add_role($line, $role);
if ($from_filename) {
git_assign_signers("commits", $total_commits, @signers);
} else {
git_assign_signers("modified commits", $total_commits, @signers);
}
}

sub uniq {
my @parms = @_;
my (@parms) = @_;

my %saw;
@parms = grep(!$saw{$_}++, @parms);
return @parms;
}

sub sort_and_uniq {
my @parms = @_;
my (@parms) = @_;

my %saw;
@parms = sort @parms;
Expand Down Expand Up @@ -1008,7 +1018,7 @@ sub merge_email {
}

sub output {
my @parms = @_;
my (@parms) = @_;

if ($output_multiline) {
foreach my $line (@parms) {
Expand Down

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